Jurnal Nasional Teknologi Komputer

SISTEM PENDUKUNG KEPUTUSAN PENENTUAN GURU TERBAIK DI SEKOLAH DASAR NEGERI 028228 BINJAI SELATAN MENGGUNAKAN METODE SAW

demi sitepu, Marwa Halim, Suhendri Nasution — Thu, 30 Apr 2026 00:00:00 +0700

Penilaian kinerja guru secara objektif sangat penting untuk memberikan penghargaan yang adil dan memotivasi peningkatan kualitas pembelajaran. Di SDN 028228 Binjai Selatan, proses penentuan guru terbaik sebelumnya dilakukan secara manual, sehingga rentan terhadap subjektivitas, ketidakkonsistenan, dan kurang efisien. Penelitian ini bertujuan merancang dan mengimplementasikan Sistem Pendukung Keputusan (SPK) berbasis web guna membantu pemilihan guru terbaik secara objektif dan transparan dengan metode Simple Additive Weighting (SAW). Metode SAW dipilih karena mampu menangani pengambilan keputusan multikriteria melalui normalisasi data, perhitungan preferensi berdasarkan bobot yang ditetapkan sekolah, serta menghasilkan tahap perangkingan untuk menentukan guru dengan skor tertinggi sebagai alternatif terbaik. Kriteria penilaian meliputi keaktifan dalam kegiatan sekolah, evaluasi hasil belajar siswa, keterampilan mengajar, kedisiplinan, dan absensi. Data guru diolah untuk menghasilkan skor preferensi dan peringkat sebagai dasar penentuan guru terbaik. Hasil implementasi menunjukkan bahwa sistem yang dikembangkan dapat memberikan rekomendasi guru terbaik secara cepat, akurat, transparan, dan dapat dipertanggungjawabkan. Penggunaan sistem ini meningkatkan efisiensi, akuntabilitas, serta memberikan kejelasan dalam proses perangkingan, dan dapat dikembangkan lebih lanjut untuk mendukung manajemen sumber daya manusia di sekolah.

Rancang Bangun Website Pengaduan Kerusakan Jalan dan Fasilitas Umum Di Kabupaten Tanggamus Propinsi Lampung

Wiwied Widiyaningsih, Erlina, Mita Lailasari — Thu, 30 Apr 2026 00:00:00 +0700

Permasalahan dalam penyampaian pengaduan kerusakan jalan dan fasilitas umum di Kabupaten Tanggamus seringkali menghambat proses perbaikan. Penelitian ini bertujuan untuk merancang dan mengimplementasikan sebuah website pengaduan masyarakat yang efektif dan mudah diakses. Metode yang digunakan meliputi analisis kebutuhan, perancangan sistem, serta implementasi menggunakan bahasa pemrograman PHP dan basis data MySQL. Hasil dari penelitian ini adalah sebuah website yang dapat diakses melalui https://pengaduan.wuaze.com/pengaduan/ yang memungkinkan pengguna untuk melaporkan kerusakan jalan dan fasilitas umum dengan mengisi formulir tanpa perlu melakukan login terlebih dahulu, sehingga mempermudah masyarakat dalam berpartisipasi aktif. Sistem ini juga memfasilitasi pihak berwenang dalam menerima, memverifikasi, dan menindaklanjuti laporan. Simpulan dari penelitian ini menunjukkan bahwa website pengaduan ini dapat menjadi solusi inovatif untuk meningkatkan efisiensi komunikasi antara masyarakat dan pemerintah daerah dalam upaya pemeliharaan infrastruktur..

Sistem Informasi Absensi Mahasiswa Berbasis QR Code dan Firebase

Cindy, Darmeli Nasution, Dr. Leni Marlina — Sun, 29 Mar 2026 00:00:00 +0700

In today’s digital era, student attendance systems have become a crucial aspect of education management. This research aims to design and build a QR Code and Firebase-based student attendance information system at UNITAR Penang, Malaysia. This system is expected to improve efficiency and accuracy in the attendance process. The method used in this research is the Agile software development method, which allows for iterative and incremental development.

Pengembangan Game Edukasi ‘Nino Adventure’ Berbasis Unity Sebagai Media Edukasi Bahaya Narkoba Pada Anak-Anak

faristan falih Athalla, Adika Justio Prabawangsa — Wed, 13 May 2026 00:00:00 +0700

Penyalahgunaan narkotika di Indonesia merupakan masalah yang harus ditangani secara serius. Sebagian besar kasus penyalahgunaan narkotika yang terjadi disebabkan oleh kurangnya informasi yang diperoleh masyarakat secara umum dan anak-anak serta remaja secara khusus. Pendidikan narkoba untuk anak-anak perlu dilakukan sejak usia dini melalui berbagai media yang menarik, salah satunya adalah game yang mendidik tentang bahaya narkoba. Studi ini menyajikan “Nino Adventure,” sebuah game edukatif yang menceritakan kisah petualangan seorang anak bernama Nino untuk memberantas narkoba. Game ini dirancang dengan visual yang menyenangkan dan tantangan untuk melibatkan anak-anak usia 7-12 tahun. Dikembangkan menggunakan Unity Game Engine, Game ini bertujuan untuk meningkatkan kesadaran anak-anak tentang bahaya narkoba melalui game interaktif. Game ini dievaluasi menggunakan metode System Usability Scale (SUS) dengan 30 responden, mencapai skor rata-rata 86, yang menempatkannya dalam kategori “Diterima” dengan peringkat “Sangat Baik”. Pengujian black box mengkonfirmasi bahwa semua fitur game berfungsi dengan baik. Melalui game ini, anak-anak diharapkan lebih sadar akan bahaya narkoba dan termotivasi untuk menghindarinya.

Perancangan Sistem Informasi Pelaporan Dokumen Catatan Sipil Menggunakan Metode Design Thinking (Studi Kasus: Dinas Kependudukan dan Pencatatan Sipil Kota Medan)

Sri Mahyuni, Rio Septian Hardinata, Suheri — Sun, 29 Mar 2026 00:00:00 +0700

Penelitian ini membahas perancangan dan implementasi Sistem Informasi Pelaporan Dokumen Catatan Sipil menggunakan metode Design Thinking pada Dinas Kependudukan dan Pencatatan Sipil Kota Medan. Sistem ini dirancang untuk memudahkan pengelolaan data pemohon, permohonan, dan pembuatan laporan secara efektif dan efisien. Tahapan perancangan meliputi studi kebutuhan, pembuatan use case, activity, sequence, dan class diagram, serta perancangan database relasional yang terstruktur. Implementasi sistem mencakup fitur validasi data, notifikasi kesalahan input, filter permohonan, serta kemampuan mencetak dan mengekspor laporan dalam format PDF dan Excel. Pengujian Black Box menunjukkan bahwa sistem bekerja sesuai spesifikasi dan dapat meningkatkan efisiensi operasional serta mempercepat pelayanan dokumen catatan sipil kepada masyarakat.

Penerapan Metode Rapid Application Development (RAD) Pada Sistem Absensi Karyawan Berbasis GPS Di CV. Bambang Tetuko

Hermanto, Muhammad Syahputra Novelan, Afif Badawi — Sun, 29 Mar 2026 00:00:00 +0700

Perkembangan teknologi informasi telah memberikan dampak signifikan terhadap efisiensi proses bisnis dalam berbagai sektor industri. Salah satu penerapan teknologi yang berperan penting adalah sistem absensi dan penggajian berbasis lokasi (GPS) yang dapat meningkatkan akurasi data kehadiran karyawan. Penelitian ini bertujuan untuk merancang dan membangun sistem absensi dan penggajian karyawan berbasis GPS pada CV. Bambang Tetuko dengan menerapkan metode Rapid Application Development (RAD). Metode RAD dipilih karena mampu menghasilkan aplikasi dalam waktu pengembangan yang lebih singkat melalui pendekatan iteratif, kolaboratif, dan prototyping yang intensif antara pengembang dan pengguna. Tahapan penelitian dimulai dari analisis kebutuhan, perancangan sistem, pengembangan prototipe, hingga pengujian sistem berdasarkan feedback pengguna secara langsung. Sistem ini mengintegrasikan fitur pencatatan kehadiran melalui lokasi GPS secara real-time, validasi posisi karyawan sesuai titik lokasi kerja, serta perhitungan penggajian otomatis berdasarkan jumlah kehadiran dan jam kerja. Pengujian dilakukan menggunakan metode black box untuk memastikan fungsionalitas sistem berjalan sesuai kebutuhan operasional perusahaan. Hasil implementasi menunjukkan bahwa sistem absensi dan penggajian berbasis GPS dapat meningkatkan transparansi, akurasi data kehadiran, serta meminimalkan potensi kecurangan absensi manual. Selain itu, penerapan metode RAD mampu mempercepat proses pengembangan dan memastikan fungsionalitas sistem sesuai harapan pengguna. Dengan adanya sistem ini, proses administrasi kehadiran dan penggajian di CV. Bambang Tetuko menjadi lebih efektif, efisien, dan terstruktur secara digital.

Design and Development of a Web-Based School Portal at SDN 060878 Using the Waterfall Method

Hafizhah Sufina Az-Zahra, Nova Mayasari, Andysah Putera Utama Siahaan, Eka Putra — Sun, 29 Mar 2026 00:00:00 +0700

Current technological developments are encouraging the world of education to begin transforming into a digital-based system, which is one way to improve the effectiveness of administrative services and expand access to information in the school environment. The aim of this research is to build a website-based school portal that can be used to help deliver information while supporting academic and administrative activities. The system development process employed a waterfall approach, consisting of five phases: needs identification, system design, system development, implementation, and ongoing maintenance. The data used for this research was obtained through school observations, direct discussions with relevant school officials, and the collection of documentary data through photographs. The development of this school portal, the author hopes that the administration process and information delivery will be faster and well-documented, and can support the school digitalization process for information managers at SD Negeri 060878.

Rancang Bangun Sistem Informasi Penjualan di The LDR Coffee Berbasis Web Menggunakan Native Programming

Retno Mutiara, Zulham Sitorus, Andysah Putera Utama Siahaan — Sun, 29 Mar 2026 00:00:00 +0700

Perkembangan teknologi informasi mendorong kebutuhan akan sistem yang efisien dalam mengelola operasional bisnis, termasuk pada kafe. Penelitian ini bertujuan untuk merancang dan mengimplementasikan Sistem Informasi Penjualan Berbasis Web di The LDR Coffee menggunakan pengembangan native programming. Sistem dirancang untuk mempermudah pencatatan transaksi, pengelolaan data minuman dan meja, serta penyusunan laporan penjualan secara real-time. Metode penelitian yang digunakan adalah Waterfall, dimulai dari analisis kebutuhan hingga implementasi, dan pengujian dilakukan menggunakan Black Box Testing untuk memastikan semua fitur berjalan sesuai kebutuhan pengguna. Hasil penelitian menunjukkan bahwa sistem mampu meningkatkan kecepatan, akurasi, dan efisiensi proses penjualan, serta meminimalkan kesalahan yang umum terjadi pada metode manual. Sistem ini juga memudahkan monitoring penjualan dan mendukung pengambilan keputusan manajerial secara lebih tepat.

SISTEM MONITORING HARGA PANGAN POKOK BERBASIS WEB PADA PASAR INFLASI KOTA MEDAN

Habib Suyudi, Hendry, Ruly Dwi Arista — Thu, 09 Apr 2026 00:00:00 +0700

Pangan merupakan kebutuhan pokok utama masyarakat yang memiliki peran penting dalam menjaga stabilitas ekonomi dan sosial. Fluktuasi harga pangan pokok, khususnya pada kelompok volatile food, dapat mempengaruhi daya beli masyarakat serta berdampak langsung terhadap tingkat inflasi. Kenaikan harga yang tiba-tiba akibat faktor-faktor seperti gagal panen, gangguan alam, atau perubahan harga domestik dan internasional dapat menimbulkan ketidakstabilan ekonomi dan mengancam ketahanan pangan. Oleh karena itu, diperlukan suatu sistem yang mampu memantau perubahan harga pangan secara cepat dan akurat. Penelitian ini mengusulkan pengembangan Sistem Monitoring Harga Pangan Pokok Berbasis Web pada Pasar Inflasi Kota Medan yang bertujuan untuk menyediakan informasi harga pangan secara realtime, tepat, dan terintegrasi. Sistem ini dirancang untuk membantu pihak terkait, seperti pemerintah daerah dan pengelola pasar, dalam melakukan analisis serta pengambilan keputusan strategis guna mengendalikan gejolak harga pangan. Dengan penerapan teknologi berbasis web, diharapkan sistem ini dapat meningkatkan efisiensi pemantauan harga, memperkuat ketahanan pangan, serta mendukung upaya pengendalian inflasi di Kota Medan.

Analisis Pengukur Jarak Menggunakan Gelombang Ultrasonik Sebagai Sensor Parkir Mobil

Rahmatsyah Ketaren, Solly Aryza Lubis — Thu, 09 Apr 2026 00:00:00 +0700

Meningkatnya jumlah kendaraan bermotor telah meningkatkan mobilitas dan efektivitas aktivitas manusia. Namun, kondisi tersebut juga berdampak pada semakin terbatasnya ruang parkir, sehingga risiko terjadinya benturan antar kendaraan maupun dengan objek di sekitarnya semakin tinggi, terutama pada area parkir yang sempit. Oleh karena itu, diperlukan suatu sistem yang dapat membantu pengemudi dalam mengendalikan kendaraan, khususnya saat melakukan manuver parkir, guna meminimalkan risiko benturan. Penelitian ini bertujuan untuk merancang dan mengimplementasikan purwarupa sistem pengukur jarak berbasis sensor ultrasonik sebagai sensor parkir mobil. Sistem menggunakan tiga buah sensor ultrasonik HC-SR04 yang ditempatkan pada sisi kiri, kanan, dan belakang kendaraan. Sensor bekerja dengan memancarkan dan menerima gelombang ultrasonik yang dipantulkan oleh objek di sekitar kendaraan. Data jarak yang diperoleh kemudian diolah menggunakan mikrokontroler Arduino Mega 2560 R3 dan ditampilkan melalui LCD serta indikator peringatan berupa RGB LED, LED bar graph, dan buzzer.
Hasil pengujian menunjukkan bahwa purwarupa mampu mendeteksi keberadaan objek pada sisi kiri, kanan, dan belakang kendaraan dengan baik. Berdasarkan pengujian Single Sensor Test dan Multi Sensor Test, diperoleh persentase galat sistem sebesar 1,85%. Sistem peringatan bekerja secara bertahap (gradual) sesuai dengan perubahan jarak objek terhadap kendaraan. Selain itu, purwarupa memiliki konsumsi daya yang rendah, yaitu sebesar 1 Watt, sehingga berpotensi untuk diaplikasikan pada sistem parkir mobil yang sebenarnya.

Analisis Kinerja Detektor Optik Berbasis Fototransistor PNP Dalam Sistem Serat Optik

Yogi Christanto, Ahmad Faisal — Thu, 09 Apr 2026 00:00:00 +0700

Serat optik merupakan teknologi utama dalam sistem komunikasi modern karena mampu menyediakan kapasitas, kecepatan, dan keandalan transmisi yang tinggi. Salah satu komponen penting dalam sistem ini adalah fotodetektor yang berfungsi mengubah sinyal cahaya menjadi sinyal listrik, salah satunya menggunakan fototransistor. Penelitian ini bertujuan untuk menganalisis kinerja PNP phototransistor berbahan Gallium Arsenide (GaAs) dan Silicon (Si) sebagai fotodetektor pada sistem komunikasi serat optik dengan asumsi konsentrasi doping donor (ND = 10¹⁶ m⁻³) dan akseptor (NA = 10¹⁷–10¹⁹ m⁻³). Metode penelitian dilakukan melalui studi literatur, penentuan parameter semikonduktor, serta perhitungan kinerja fototransistor berdasarkan parameter utama, meliputi lebar deplesi, tegangan bias maju, arus emitor, quantum efficiency, responsivity, internal gain, arus keluaran, photon flux, bandwidth, signal-to-noise ratio (SNR), dan daya optik. Perbandingan hasil menunjukkan bahwa GaAs unggul pada quantum efficiency (0,46), responsivity (0,32 A/W), outflow current (1,89×10⁻⁴ A), photon flux (5,47×10¹⁴ s⁻¹), SNR (2656), serta konsumsi daya optik yang rendah (5,19×10⁻⁷ W). Sebaliknya, Si unggul pada common emitter gain (1563) dan bandwidth (6,55×10⁹ Hz), yang menjadikannya lebih sesuai untuk aplikasi komunikasi optik berkecepatan tinggi. Hasil penelitian menyimpulkan bahwa GaAs lebih ideal untuk fotodeteksi dengan sensitivitas tinggi, efisiensi cahaya, dan sinyal yang stabil, sedangkan Si lebih tepat digunakan pada sistem komunikasi optik yang membutuhkan kecepatan transmisi data dan penguatan arus tinggi. Dengan demikian, pemilihan material PNP phototransistor harus mempertimbangkan kebutuhan spesifik aplikasi agar kinerja sistem serat optik dapat dioptimalkan.

Perancangan Digitalisasi Manajemen Administrasi Pengarsipan Surat Menggunakan Metode Waterfall ( Studi Kasus PT. Cahaya Pelita Andhika)

Nurdi, Leni Marlina, Juliandri — Thu, 09 Apr 2026 00:00:00 +0700

Perkembangan teknologi informasi mendorong organisasi untuk melakukan transformasi digital dalam pengelolaan administrasi guna meningkatkan efektivitas dan efisiensi kerja. PT. Cahaya Pelita Andhika sebagai perusahaan yang bergerak di bidang Perkebunan Kelapa Sawit masih menghadapi permasalahan dalam pengelolaan arsip surat masuk dan surat keluar yang dilakukan secara manual. Proses pengarsipan konvensional menyebabkan kendala seperti keterlambatan pencarian dokumen, risiko kehilangan arsip, duplikasi data, serta rendahnya akurasi informasi. Penelitian ini bertujuan untuk merancang dan membangun sistem digitalisasi manajemen administrasi pengarsipan surat berbasis web guna mendukung pengelolaan arsip yang lebih terstruktur, aman, dan mudah diakses. Metode pengembangan sistem yang digunakan adalah Waterfall, yang terdiri dari tahapan analisis kebutuhan, perancangan sistem, implementasi, pengujian, dan pemeliharaan. Teknik pengumpulan data dilakukan melalui observasi, wawancara, dan studi pustaka untuk memperoleh kebutuhan sistem secara menyeluruh. Hasil dari penelitian ini berupa rancangan dan implementasi sistem pengarsipan surat yang mampu mengelola data surat masuk dan surat keluar, melakukan pencarian arsip secara cepat, serta menghasilkan laporan administrasi secara otomatis. Dengan diterapkannya sistem ini, diharapkan PT. Cahaya Pelita Andhika dapat meningkatkan efisiensi kerja administrasi, meminimalkan kesalahan pengelolaan arsip, serta mendukung pengambilan keputusan yang lebih cepat dan akurat.

Sistem Informasi Designer Baju Berbasis Web Menggunakan Metode Design Thinking (Study kasus: Adhe Modiste)

Yola Syofia Putri, Rio Septian Hardinata, Abdul Khaliq — Thu, 09 Apr 2026 00:00:00 +0700

Industri fashion membutuhkan solusi digital untuk mendukung layanan desain, komunikasi dengan pelanggan, serta pengelolaan pesanan. Adhe Modiste sebagai usaha jasa desain dan pembuatan baju masih mengelola data pelanggan, permintaan desain, dan proses pemesanan secara manual, sehingga berpotensi menimbulkan ketidakefisienan kerja. Penelitian ini bertujuan untuk membangun aplikasi designer baju berbasis web menggunakan metode Design Thinking. Metode Design Thinking diterapkan untuk memahami kebutuhan pengguna, mengidentifikasi permasalahan, menghasilkan ide solusi, dan mengembangkan aplikasi yang berorientasi pada pengguna. Tahapan metode meliputi empathize, define, ideate, prototype, dan test. Aplikasi dibuat menggunakan HTML, CSS, PHP, JavaScript, serta basis data MySQL. Hasil penelitian menunjukkan bahwa aplikasi yang dibangun mampu membantu pengelolaan layanan desain baju, data pelanggan, dan pesanan, serta meningkatkan interaksi antara desainer dan pelanggan. Aplikasi ini diharapkan dapat meningkatkan efisiensi dan kualitas layanan di Adhe Modiste..

Analisis Usability Website Museum Kopi sebagai Media Edukasi Produk Nabati dan Hewani dengan Pendekatan System Usability Scale

Eriyan Pratama, Leni Marlina, Ruly Dwi Arista — Thu, 09 Apr 2026 00:00:00 +0700

Usability website merupakan faktor penting dalam menentukan keberhasilan media digital yang digunakan sebagai sarana edukasi. Website Museum Kopi berfungsi sebagai media edukasi yang menyajikan informasi mengenai produk nabati dan hewani yang berkaitan dengan kopi. Namun, tingkat kemudahan penggunaan website tersebut belum pernah dievaluasi secara sistematis. Penelitian ini bertujuan untuk menganalisis usability website Museum Kopi sebagai media edukasi produk nabati dan hewani menggunakan pendekatan System Usability Scale (SUS). Metode penelitian yang digunakan adalah metode kuantitatif deskriptif dengan menyebarkan kuesioner SUS kepada pengguna setelah mereka berinteraksi dengan website. Data dikumpulkan dari responden yang mengakses konten edukasi pada website Museum Kopi. Nilai SUS dihitung untuk mengetahui tingkat usability website. Hasil penelitian menunjukkan bahwa website Museum Kopi memiliki tingkat usability tertentu berdasarkan standar penilaian SUS, sehingga dapat digunakan untuk menilai tingkat kepuasan pengguna, kemudahan penggunaan, dan efektivitas website sebagai media edukasi. Hasil analisis ini diharapkan dapat menjadi dasar dalam pengembangan dan peningkatan kualitas website Museum Kopi.

Pendataan dan Profil Anak Panti Asuhan Berbasis Web Menggunakan Metode Moving Average (Studi Kasus:Panti Asuhan Harapan Amaris)

Cesya Alfina, Hanna Willa Dhany, Ruly Dwi Arista — Thu, 09 Apr 2026 00:00:00 +0700

Pengelolaan data panti asuhan memerlukan informasi yang akurat, terstruktur, dan selalu diperbarui untuk mendukung kegiatan administrasi dan pengambilan keputusan. Dalam praktiknya, pendataan anak panti asuhan masih banyak dilakukan secara manual sehingga menyulitkan proses pembaruan data, penyusunan laporan, serta pemantauan perubahan data dari waktu ke waktu. Penelitian ini bertujuan untuk merancang aplikasi pendataan dan profil anak panti asuhan berbasis web dengan menerapkan metode Moving Average untuk menganalisis tren perubahan data. Metode Moving Average digunakan untuk mengolah data periodik seperti jumlah anak, distribusi usia, dan tingkat pendidikan guna memperoleh nilai rata-rata dalam periode tertentu. Aplikasi dikembangkan berbasis web agar proses penginputan, pengolahan, dan penyajian data dapat dilakukan secara terintegrasi. Hasil penelitian menunjukkan bahwa aplikasi mampu membantu pengelola panti asuhan dalam mengelola data profil anak secara lebih efektif, sedangkan metode Moving Average dapat memberikan gambaran tren data yang berguna untuk perencanaan dan evaluasi.

Perancangan Sistem Klasifikasi Sentimen Ulasan Pengguna Aplikasi myIM3 Menggunakan Metode K-Nearest Neighbor

M Farhan Abdul Azizi, Suheri, Juliandri — Thu, 09 Apr 2026 00:00:00 +0700

Aplikasi myIM3 merupakan layanan digital yang digunakan oleh pelanggan Indosat untuk berbagai kebutuhan, seperti pembelian paket data, pengecekan pulsa, dan pengelolaan akun. Banyaknya pengguna aplikasi ini menghasilkan ulasan yang beragam, baik berupa tanggapan positif, negatif, maupun netral. Ulasan tersebut menjadi sumber informasi penting untuk mengetahui tingkat kepuasan pengguna dan permasalahan yang sering terjadi. Namun, banyaknya data ulasan membuat proses analisis sentimen secara manual menjadi kurang efektif. Penelitian ini bertujuan untuk merancang sistem klasifikasi sentimen ulasan pengguna aplikasi myIM3 menggunakan algoritma K-Nearest Neighbor. Data ulasan dikumpulkan dari platform distribusi aplikasi dan dikelompokkan ke dalam kategori sentimen positif, negatif, dan netral. Sistem dikembangkan berbasis web dengan basis data MySQL untuk memudahkan proses pengolahan dan klasifikasi data. Hasil penelitian diharapkan dapat membantu pihak terkait dalam memahami persepsi pengguna secara lebih cepat dan akurat sebagai dasar evaluasi dan peningkatan layanan aplikasi.

Perancangan Smart Box Penerima Paket Berbasis Internet of Things Menggunakan NodeMCU ESP8266 dan ESP32-CAM dengan Optical Character Recognition

Raey Anugrah Perdana Sembiring, Hafni, Muhammad Zen — Fri, 10 Apr 2026 00:00:00 +0700

Peningkatan aktivitas pengiriman paket seiring berkembangnya layanan e-commerce atau toko online membutuhkan sistem penerimaan paket yang lebih aman dan terstruktur. Dalam praktiknya, proses penerimaan paket masih sebagian besar dilakukan secara manual, sehingga ada risiko kehilangan, kerusakan, serta tidak tersedianya dokumentasi penerimaan paket. Tujuan dari penelitian ini adalah untuk merancang smartbox penerima paket berbasis Internet of Things (IoT) yang mampu menerima dan mendokumentasikan paket secara otomatis. Sistem smartbox ini menggunakan NodeMCU ESP8266 sebagai pengendali utama sekaligus media komunikasi data, serta ESP32-CAM sebagai perangkat pengambil citra untuk mendokumentasikan paket dan membaca informasi tanda terima seperti nomor resi atau kode QR menggunakan metode Optical Character Recognition (OCR). Smartbox dilengkapi dengan sensor ultrasonik untuk mendeteksi paket yang masuk dan mekanisme penguncian menggunakan modul servo sebagai pengaman. Setiap paket yang diterima akan direkam dalam bentuk gambar, informasi yang diidentifikasi, dan dikirim ke server berbasis web secara real-time sehingga dapat dipantau melalui perangkat pengguna. Dengan sistem ini, proses penerimaan paket menjadi lebih aman, terdokumentasi, dan dapat diakses tanpa kehadiran penerima secara langsung.

Perancangan UI/UX Aplikasi Layanan Administrasi Kependudukan Kelurahan Tanjung Rejo Berbasis Website Dengan Metode User Centered Design

Dimas Armadansyah, Hermansyah, Heni Wulandari — Fri, 10 Apr 2026 00:00:00 +0700

Layanan administrasi kependudukan adalah layana publik yang cukup penting bagi masyarakat, termasuk penerbitan KTP, Kartu Keluarga, serta Akta pencatatan sipil. Akan tetapi, metode pelayanan yang masih dilakukan secara manual mengakibatkan proses menjadi tidak efesien, adanya keterbatasan dalam akses informasi, serta waktu pelayanan yang cenderung lama. Penelitian ini memiliki tujuan untuk merancang User Interface (UI) dan User Experience (UX) pada aplikasi layanan administrasi kependudukan Kelurahan Tanjung Rejo berbasis website. Metode yang digunakan pada penelitian ini adalah User Centered Design (UCD). Metode ini diterpakan melalui beberapa langkah, yaitu memahami konteks penggunaan, menentukan kebutuhan pengguna, merancang solusi, dan mengevaluasi desain dengan melibatkan pengguna secara langsung pada setiap langkah. Penelitian ini menghasilkan desain UI/UX website yang sesuai dengan kebutuhan pengguna dan meningkatkan kemudahan dalam mengakses layanan, terbukti oleh hasil evaluasi desain yang menunjukkan skor sebesar 87 dengan dengan kategori Excellent. Tahap evaluasi menggunakan pengujian dengan metode System Usability Scale (SUS). Penerapan metode UCD terbukti berhasil dalam menciptakan desain aplikasi berbasis website yang efesien, mudah diakses, dan berfokus pada pengguna.

Implementasi Desain UI/UX dalam Promosi Digital Berkah Laundry Menggunakan Metode Design Thinking

Adelia Yolanda Cahya, Sri Wahyuni, Ahmad Akbar — Fri, 10 Apr 2026 00:00:00 +0700

Penelitian ini bertujuan untuk merancang User Interface dan User Experience (UI/UX) untuk aplikasi layanan Berkah Laundry sebagai sarana promosi digital yang berfokus pada UMKM. Berkah Laundry menghadapi masalah terkait minimnya saluran digital yang mampu menyampaikan informasi mengenai layanan dan cara pemesanan dengan cara yang sistematis dan nyaman bagi pelanggan. Dalam penelitian ini, metode yang diterapkan adalah Design Thinking, yang mencakup langkah-langkah empathize, define, ideate, prototype, dan test. Pengumpulan informasi dilakukan melalui observasi serta wawancara langsung dengan konsumen Berkah Laundry untuk memahami kebutuhan dan pengalaman mereka. Uji coba usability dilaksanakan dengan menggunakan metode System Usability Scale (SUS), yang melibatkan tujuh orang responden. Hasil dari pengujian menunjukkan nilai rata-rata SUS sebesar 91,7, yang mengindikasikan bahwa prototipe aplikasi ini memiliki tingkat kegunaan yang sangat tinggi dan dapat diterima oleh pengguna. Dengan demikian, desain UI/UX untuk aplikasi ini diharapkan dapat meningkatkan kualitas pengalaman pengguna dan juga membantu dalam efektivitas promosi digital Berkah Laundry.

DESAIN DAN IMPLEMENTASI PLATFORM E-COMMERCE PRODUK KERAJINAN LOKAL BERBASIS WEB

Tesalonika Aulia Duha, Abdul Khaliq, Solly Aryza — Fri, 10 Apr 2026 00:00:00 +0700

Perkembangan teknologi informasi mendorong pelaku usaha kerajinan lokal untuk beradaptasi dengan model pemasaran digital guna meningkatkan daya saing dan jangkauan pasar. Penelitian tugas akhir ini bertujuan untuk merancang dan mengimplementasikan sebuah platform e-commerce berbasis web yang secara khusus mendukung pemasaran dan penjualan produk kerajinan lokal. Metodologi pengembangan mengadopsi pendekatan waterfall, metode yang digunakan meliputi analisis kebutuhan pengguna, perancangan sistem menggunakan Unified Modeling Language (UML), pengembangan aplikasi dengan teknologi web, serta pengujian fungsional untuk memastikan sistem berjalan sesuai kebutuhan. Platform yang dikembangkan menyediakan fitur katalog produk, keranjang belanja, transaksi pemesanan, serta integrasi informasi pembayaran dan pengiriman. Hasil implementasi menunjukkan bahwa platform e-commerce ini mampu mempermudah pengrajin lokal dalam memasarkan produk secara lebih luas, meningkatkan efisiensi proses transaksi, serta memberikan kemudahan bagi konsumen dalam memperoleh informasi dan melakukan pembelian produk kerajinan. Selain itu, sistem ini diharapkan dapat menjadi sarana pemberdayaan ekonomi kreatif lokal dengan memanfaatkan teknologi digital secara optimal. Kesimpulan dari penelitian ini adalah bahwa desain dan implementasi platform e-commerce berbasis web dapat menjadi solusi yang efektif dalam mendukung keberlanjutan dan pengembangan usaha kerajinan lokal di era digital.

Perancangan UI/UX Aplikasi Layanan Jasa Pendakian Gunung Di Sumatera Utara Berbasis Mobile Menggunakan Metode Design Thinking

Dimas Teguh Izzulhaq, Hermansyah , Supiyandi — Fri, 10 Apr 2026 00:00:00 +0700

Perkembangan teknologi mobile mendorong penerapan sistem digital pada layanan pendakian gunung. Di Sumatera Utara, pengelolaan layanan pendakian seperti penyediaan informasi, pemesanan jasa pemandu, penyewaan perlengkapan, dan perencanaan pendakian masih dilakukan secara konvensional dan terpisah sehingga kurang efisien dan berdampak pada pengalaman pengguna. Penelitian ini bertujuan untuk merancang User Interface (UI) dan User Experience (UX) aplikasi layanan jasa pendakian gunung berbasis mobile menggunakan metode Design Thinking. Metode penelitian yang digunakan adalah kualitatif deskriptif dengan tahapan empathize, define, ideate, prototype, dan test. Pengumpulan data dilakukan melalui observasi dan wawancara untuk mengidentifikasi kebutuhan dan permasalahan pengguna. Tahap pengujian dilakukan menggunakan metode usability testing dengan pendekatan Single Ease Question (SEQ) terhadap sepuluh responden. Hasil penelitian menunjukkan bahwa penerapan metode Design Thinking menghasilkan rancangan UI/UX yang berorientasi pada kebutuhan pengguna, dengan alur navigasi yang sederhana dan penyajian informasi yang terintegrasi. Hasil pengujian menunjukkan seluruh tugas memperoleh nilai rata-rata di atas 5, yang mengindikasikan bahwa purwarupa aplikasi dinilai cukup mudah hingga mudah digunakan. Meskipun demikian, masih diperlukan penyempurnaan pada aspek tampilan antarmuka dan penyajian informasi. Rancangan ini diharapkan dapat menjadi acuan dalam pengembangan aplikasi layanan pendakian gunung berbasis mobile di Sumatera Utara.

Perancangan Website Multimedia Usaha Mikro Kecil dan Menengah (UMKM) Dengan Pendekatan Waterfall Untuk Mempromosikan Pabrik Opak Ibu Iin

Nanda Amelia, Supiyandi, Ahmad Akbar — Fri, 10 Apr 2026 00:00:00 +0700

Usaha Mikro Kecil dan Menengah (UMKM) merupakan pilar fundamental atau pokok perekonomian Indonesia, yang berkontribusi signifikan terhadap Produk Domestik Bruto dan penyerapan tenaga kerja. Salah satu UMKM yang berpotensi untuk berkembang adalah Pabrik Opak Ibu Iin, yang beroprasi di sektor industri makanan olahan tradisional. Namun, seperti banyak UMKM lainnya, strategi promosi yang digunakan masih bersifat tradisional, mengandalkan promosi konvensional atau media sosial sederhana, sehingga membuat keterbatasan informasi dan jangkauan pasar. Hal ini menyebabkan potensi produk lokal seperti opak belum optimal dikenal masyarajat luas. Sehingga website multimedia memiliki potensi untuk menjadi media promosi yang efektif karena dapat meyajikan informasi produk dengan cara interaktif, meningkatkan keterlibatan pengguna, dan memperluas jangkauan pasar. Metode penelitian ini mengadopsi model waterfall, sebuah pendekatan sistematis yang mirip dengan aliran air terjun, di mna setiap fase perancangan dan pengembangan harus diselesaikan secara berurutan sebelum melanjutkan ke fase berikutnya. Model ini mencakup tahapan seperti analisis kebutuhan, desain, implementasi, dan pengujian, memastikan alur kerja yang terstruktur, sehingga cocok untuk proyek dengan spesifikasi yang jelas dan stabil. Dengan demikian, setiap Langkah harus tuntas untuk menjamin kualitas hasil akhir. Hasil dari penelitian ini adalah sebuah website multimedia interaktif yang dirancang khusus untuk mempromosikan produk Pabrik Opak Ibu Iin, seperti opak tradisional. Website ini memanfaatkan teknologi yang sesuai, serta elemen multimedia seperti video, gambar produk, dan fitur interaktif untuk meningkatkan aketrlibatan pengguna. Dengan desain responsive, situs ini dapat diakses secara online melalui https://www.opaksingkong.online/ pada perangkat mobile dan desktop, membantu pabrik memperluas jangkauan pasar serta memperkuat branding melalui konten yang menarik dan informatif.

ANALISIS PENERAPAN KAPASITOR BANK DALAM PERBAIKAN FAKTOR DAYA DI GEDUNG KOMERSIAL BERBEBAN REAKTIF TINGGI

Junaedi Hutabarat, Ahmad Dani, Beni Satria — Fri, 10 Apr 2026 00:00:00 +0700

Penelitian ini menganalisis efektivitas penerapan kapasitor bank dalam meningkatkan faktor daya pada gedung komersial berbeban reaktif tinggi menggunakan simulasi ETAP 19.0. Empat skenario dievaluasi: beban maksimum dan minimum dengan serta tanpa kapasitor bank. Pada beban maksimum (895 kVA), pemasangan kapasitor bank (400 kVar) meningkatkan faktor daya dari 78,3% menjadi 96,4%, mengurangi daya reaktif sebesar 66,4% dan menstabilkan tegangan di 384 V. Namun, pada beban minimum (173 kVA), kapasitor bank berkapasitas tetap (200 kVar) menyebabkan overcompensation, menghasilkan daya reaktif negatif (-150 kVar), faktor daya leading (-87,4%), dan kenaikan tegangan hingga 400,3 V yang berisiko merusak peralatan. Analisis menunjukkan kapasitas optimal kapasitor bank untuk beban maksimum adalah 389 kVar, sedangkan untuk beban minimum tidak diperlukan atau maksimal 50 kVar. Temuan ini mengonfirmasi ketidakefektifan kapasitor bank berkapasitas tetap pada beban dinamis. Penelitian merekomendasikan penggunaan sistem kapasitor bank otomatis dengan step control untuk menyesuaikan kapasitas secara real-time, memastikan faktor daya memenuhi standar PLN (≥0,85) sekaligus menghindari overcompensation. Pendekatan ini tidak hanya menghindari denda akibat faktor daya rendah, tetapi juga meningkatkan keandalan sistem.

Perancangan Platform Web Marketplace Personal Untuk Freelance Digital Artist Dengan Metode Research & Development (R&D)

Hilal Prayogi, Zulham Sitorus, Zulfahmi Syahputra — Fri, 10 Apr 2026 00:00:00 +0700

Penelitian ini bertujuan untuk merancang dan mengembangkan platform marketplace berbasis web personal untuk freelance digital artist menggunakan metode Research and Development (R&D) dengan model ADDIE. Berdasarkan survei terhadap 17 digital artist, teridentifikasi pain points signifikan pada platform existing seperti biaya komisi tinggi (41,2%), proses verifikasi rumit (47,1%), dan persaingan tidak sehat dengan karya AI (Artificial Intelligence) (52,9%). Platform dikembangkan menggunakan Laravel 12, PHP, MySQL, HTML, CSS, dan JavaScript, dengan delapan fitur utama: Profile, Link, Portfolio, Commission Management, Review & Rating, Management Review, Real-time Chat, FAQ, dan Contact. Evaluasi yang melibatkan 15 responden menunjukkan bahwa platform mencapai tingkat kelayakan 85,6% dengan kategori "Sangat Layak". Aspek Usability memperoleh skor tertinggi yaitu 88,8%, sedangkan Functionality memperoleh skor 88,0%, yang menunjukkan bahwa fitur yang disediakan sesuai dengan kebutuhan digital artist Indonesia. Platform ini berhasil menjawab tantangan pemasaran yang dihadapi digital artist dengan menyediakan solusi terintegrasi dengan model komisi 0%, sehingga artist dapat memperoleh margin keuntungan maksimal.

PERANCANGAN SISTEM INFORMASI KASIR PADA BENGKEL MOBIL BERBASIS WEB

Muhammad Dwi Ardiansyah, Afif Badawi, Juliandri — Fri, 24 Apr 2026 00:00:00 +0700

Perkembangan teknologi informasi yang pesat telah mendorong berbagai sektor usaha untuk mengadopsi sistem digital guna meningkatkan daya saing, termasuk usaha bengkel. Bengkel Sehati Motor saat ini masih sepenuhnya menggunakan proses manual untuk penjualan, pembelian, hingga pembukuan, yang seringkali menyebabkan kesalahan pencatatan dan ketidakefisienan pengelolaan data. Penelitian ini bertujuan untuk merancang dan mengimplementasikan sistem informasi kasir berbasis website untuk memudahkan proses transaksi dan pengelolaan data. Sistem dibangun menggunakan bahasa pemrograman PHP dan database MySQL dengan platform berbasis web. Metode penelitian meliputi pengumpulan data melalui observasi, wawancara, dan dokumentasi, dilanjutkan dengan analisis dan perancangan sistem menggunakan UML (Unified Modeling Language). Hasil penelitian menunjukkan bahwa implementasi sistem ini memberikan kemudahan akses informasi, pengontrolan stok yang lebih efektif, serta pelaporan keuangan yang lebih akurat. Pengujian blackbox mengonfirmasi bahwa seluruh fungsi sistem berjalan sesuai dengan kebutuhan yang diharapkan.

Sistem Informasi Pelayanan Masyarakat Menggunakan Metode Servqual Pada Biro Aministrasi Pimpinan Sekretariat Daerah Provinsi Sumatera Utara

Mahadir, Jodi Hendrawan, Rio Septian Hardinata — Fri, 24 Apr 2026 00:00:00 +0700

Penelitian ini berfokus pada pengembangan sistem informasi pelayanan publik menggunakan metode SERVQUAL untuk menilai kualitas layanan di Biro Administrasi Pimpinan Sekretariat Daerah Provinsi Sumatera Utara. Tujuan dari penelitian ini adalah untuk mengotomasi proses pengajuan layanan, mengintegrasikan metode SERVQUAL untuk mengukur kesenjangan antara harapan dan persepsi publik, serta meningkatkan transparansi dan akuntabilitas pelayanan publik. Dengan mengadopsi SERVQUAL, sistem ini mengevaluasi lima dimensi utama kualitas layanan: tangibles, reliability, responsiveness, assurance, dan empathy. Sistem yang dikembangkan menggunakan teknologi berbasis web ini dilengkapi dengan fitur pelacakan status pengajuan layanan secara real-time dan menyediakan dashboard bagi administrator untuk menganalisis kualitas layanan secara terstruktur. Penelitian ini menyimpulkan bahwa sistem yang diimplementasikan berhasil meningkatkan kualitas layanan dan kepuasan masyarakat, dengan peningkatan signifikan dalam hal transparansi dan efisiensi.

Aplikasi Pendaftar Siswa/I Baru Berbasis Web di Sekolah Yayasan Pendidikan Mutia Rahma Menggunakan Metode Vigenere

Faiz Al Farizi, Ruly Dwi Arista, Hanna Willa Dhany — Wed, 29 Apr 2026 00:00:00 +0700

The new student admission process involves collecting and managing prospective students’ personal data, which must be handled accurately and securely. Yayasan Pendidikan Mutia Rahma still relies on manual registration procedures, causing data accumulation, recording errors, and delays in verification. This study aims to develop a web-based new student registration application that facilitates data entry and management while ensuring data confidentiality using the Vigenere Cipher method. The research method applied is software development using the Waterfall model, which includes requirement analysis, system design, implementation, and testing stages. The application is developed using HTML, PHP, JavaScript, and MySQL as the database. The Vigenere Cipher method is implemented to encrypt sensitive registration data so that information stored and transmitted through the system is protected. The results show that the developed application is able to organize registration data more systematically, reduce recording errors, speed up the verification process, and improve data security. This application supports a more efficient and secure new student admission process at Yayasan Pendidikan Mutia Rahma.

Pengembangan Keamanan Data Penerimaan Siswa Baru Berbasis Website

Nistia Laia, Muhammad Zen, Leni Marlina — Wed, 29 Apr 2026 00:00:00 +0700

The process of new student admission involves the collection and management of sensitive personal data, which requires strong data security to prevent misuse and unauthorized access. SMP Swasta Pencawan Medan faces challenges in ensuring the confidentiality and integrity of prospective student data in its web-based admission system. This study aims to develop a secure web-based new student admission system by implementing data security mechanisms to protect against common web attacks such as SQL Injection, Cross-Site Scripting (XSS), and Cross-Site Request Forgery (CSRF). The research method used is system development, which includes system analysis, design, implementation, and testing. The system is developed using PHP as the programming language and MySQL as the database, with the application of the SHA-1 algorithm to secure sensitive data such as passwords. The results show that the developed system is capable of improving data security, maintaining data integrity, and preventing unauthorized access. The implementation of security mechanisms in the system contributes to a safer and more reliable new student admission process, thereby increasing trust from parents and the community.

S ANALISIS KINERJA SISTEM PENGENDALI KUALITAS AIR JARAK JAUH BERBASIS INTERNET OF THINGS

Josua Carmel Dopen Purba, Muhammad Rizki Syahputra, Beni Satria — Thu, 30 Apr 2026 00:00:00 +0700

The use of water today is very large, many industries pollute the spring area, and household waste causes a decrease in water quality. The quality of the water used daily is not guaranteed. Then an automatic tool is needed to monitor water quality. This research is based on the Internet of Things using Arduino Uno as a microcontroller, Nodemcu ESP8266 as a wifi module, TDS sensor, LDR module and ds18b20 temperature sensor as a sensor. The design test used 3 different water samples under different conditions with a total of 30 sample tests. The research results are in the form of a tool that can monitor water quality. Based on the results of sample testing, the accuracy of the design in detecting water quality is 90%.

PERANCANGAN DESAIN UI/UX WEBSITE KASIR TOKO SEMBAKO DENGAN METODE USER CENTERED DESIGN (UCD) PADA UD JAYA ANUGRAH

Aisyah Yasmin Tanjung, Hermansyah, Heri Kurniawan — Mon, 27 Apr 2026 00:00:00 +0700

The current era of digitalization has transformed the way various business sectors operate, including retail and commerce. Grocery stores, as one of the business units in the retail and commerce sector, are directly involved in meeting the daily needs of the community. As such, grocery stores are required to adapt to the development of information technology to improve operational efficiency and customer service. UD Jaya Anugrah is a grocery store located in Medan. In its operations, transaction processes and inventory management are still carried out manually using a conventional cashier system. This has led to various problems, such as difficulties in recording transactions, managing stock, creating reports, and limitations in providing accurate information to business owners. Therefore, to improve its workflow, it is necessary to add a software tool that can run the sales system effectively. To create this software, a prototype of User Interface (UI) and User Experience (UX) is required. The method used in this research is the User Centered Design (UCD) method. Through the UCD method, researchers hope that when users interact with the application, they can easily understand the existing functions and use them smoothly.

Analisis Korosi pada Elektroda Discharge di Sistem Electrostatic Precipitator (ESP) Pada Boiler dan Pengaruhnya terhadap Kinerja Listrik

Bayu Pradana, Siti Anisah , Haris Gunawan — Mon, 27 Apr 2026 00:00:00 +0700

The Electrostatic Precipitator (ESP) is a critical component for particulate emission control in industrial boiler systems. ESP performance is strongly influenced by the condition of discharge electrodes, which are responsible for generating corona discharge and gas ionization processes. During long-term operation, the electrodes are exposed to hot flue gas, moisture, and corrosive compounds from shell combustion, leading to corrosion and surface degradation that may reduce electrical performance.

This study aims to analyze the corrosion condition of discharge electrodes in an ESP installed on a 24 ton/h palm-shell-fired boiler and its effect on electrical performance, particularly operating voltage and current. The research employed visual inspection of electrode surfaces, interviews with maintenance personnel, and monitoring of electrical parameters from the transformer–rectifier panel before and after mechanical cleaning and surface coating. A comparative analysis was conducted to evaluate performance changes resulting from electrode maintenance.

The results indicate that corroded electrodes significantly decreased secondary current and operational stability of the ESP. After cleaning and coating, the secondary current increased by up to 254%, the conduction angle became more stable, and overall ESP performance improved substantially. These findings demonstrate that corrosion mitigation and periodic electrode maintenance are essential for maintaining ESP electrical reliability and effective particulate emission control in industrial boilers.

Rancang Bangun Website Multimedia Dengan Metode Waterfall Dalam Mempromosikan Katering Bu Lela

Dina Anzani, Supiyandi, Solly Aryza — Mon, 27 Apr 2026 00:00:00 +0700

Bu Lela Catering is one of the UMKM that provides catering services for events such as weddings, birthdays, or office meetings. However, Bu Lela Catering currently relies solely on conventional promotional methods, namely word of mouth. Given this situation, there is a need for a promotional medium that can convey information more effectively and efficiently. Through the use of website-based promotional media, it is hoped that Bu Lela Catering will be able to expand its promotional reach and present product information in a structured manner. The designed website will include various important information such as business profiles, menu lists, catering package options. Bu Lela Catering's website system uses WordPress and was developed using the Waterfall method, which includes the stages of analysis, design, implementation, testing, and maintenance. In general, the design and development of Bu Lela Catering's promotional website are excellent in terms of system and make it easier for customers to access information.

Implementasi Metode Waterfall pada Perancangan dan Pembuatan Website Layanan Promosi Bengkel Las ALS Binjai

Jesica Siva, Supiyandi, Nova Mayasari — Mon, 27 Apr 2026 00:00:00 +0700

This research discusses the design and creation of a promotional service website by implementing the waterfall method. The waterfall method was chosen because its linear and sequential approach is suitable for projects with clear objectives. The process begins with an analysis phase to identify features such as profile pages, service galleries, contact information, and location map integration. And design, followed by implementation using HTML, CSS, and JavaScript. Testing covers functionality and responsiveness, as well as maintenance. The result is a website that effectively promotes welding shop services. The conclusion shows that the waterfall method demonstrates a strong structure that reduces the risk of errors, although it is not flexible in terms of changes, and this website supports the digital promotion of welding shops.

Perancangan Sistem Layanan Pemesanan Online pada Warung Bakso Bacok Sarina Berbasis Web

Qanitah Taqwa, Abdul Khaliq, Supiyandi — Mon, 27 Apr 2026 00:00:00 +0700

The rapid advancement of digital technology requires Micro, Small, and Medium Enterprises (UMKM) to adapt to the implementation of web-based systems in order to improve efficiency and service quality. Warung Bakso Bacok Sarina is one of the culinary businesses that still implements a manual ordering process, which often causes problems such as long queues. This study uses the Waterfall method, which includes the stages of requirements analysis, system design, implementation, testing, and maintenance to reduce the risk of errors in website design. The research was conducted to design a web-based online ordering system to make it easier for customers to place orders and improve the operational efficiency of Warung Bakso Bacok Sarina.

Rancang Bangun Website Profil Desa Manik Maraja Sebagai Media Informasi Digital

Indriani Aulia Rahmadani, Mohammad Yusup, Supiyandi — Mon, 27 Apr 2026 00:00:00 +0700

In the context of globalization, the advancement of information technology necessitates enhanced efficiency in managing data, particularly within village governance. Manik Maraja Village continues to depend on traditional methods, such as bulletin boards, banners, and oral communication, leading to inadequate dissemination of information and restricted access for the public to current updates. This research endeavors to create and develop a web-based village information system that supports effective and transparent management and distribution of data. The approaches applied involve collecting data through observation, interviews, and literature review, coupled with the use of the Waterfall model for system development. The system incorporates features like village profiles, news, event schedules, and other details that can be accessed instantly by the community. The adoption of this technology is projected to foster digital transformation at the village administration level, boost community engagement, and offer solutions to the complexities of information handling in the digital age.

ANALISIS PORTABEL PLTS SEBAGAI SUMBER ENERGI LISTRIK ALTERNATIF DAN PENERANGAN PADA BUDIDAYA IKAN LELE (STUDI KASUS TERNAK KLAMBIR 5 )

Ricky Adesa Pratama, Haris Gunawan, Zuraidah Taro — Mon, 27 Apr 2026 00:00:00 +0700

Keterbatasan akses energi listrik pada sektor perikanan, khususnya budidaya ikan lele, masih menjadi permasalahan utama di beberapa wilayah. Kebutuhan energi listrik diperlukan untuk menunjang penerangan kolam pada malam hari serta pengoperasian sistem pendukung budidaya. Salah satu solusi yang dapat diterapkan adalah pemanfaatan Pembangkit Listrik Tenaga Surya (PLTS) portabel sebagai sumber energi listrik alternatif yang ramah lingkungan dan mandiri. Penelitian ini bertujuan untuk menganalisis kinerja sistem PLTS portabel dalam memenuhi kebutuhan energi listrik untuk penerangan pada budidaya ikan lele. Metode penelitian yang digunakan adalah deskriptif kuantitatif dengan pendekatan studi kasus pada satu lokasi kolam budidaya ikan lele. Sistem PLTS portabel yang dianalisis terdiri dari panel surya berkapasitas 50 Wp, baterai 12 V 5 Ah yang dirangkai menjadi 24 V 10 Ah, solar charge controller, inverter 1000 W, serta beban lampu LED. Parameter yang dianalisis meliputi tegangan, arus, daya keluaran, energi harian, dan kemampuan sistem dalam menyuplai beban penerangan. Pengambilan data dilakukan melalui pengukuran langsung pada rentang waktu pukul 11.00 hingga 16.00 WIB dengan kondisi cuaca cerah. Hasil pengujian menunjukkan bahwa tegangan panel surya berada pada rentang 15,4–20,7 Volt dengan arus maksimum sebesar 2,5 Ampere. Perhitungan daya total sistem menunjukkan nilai sekitar 262,10 Watt, dengan energi listrik harian yang dihasilkan berkisar antara 200–240 Wh. Energi tersebut mampu memenuhi kebutuhan penerangan kolam ikan lele menggunakan lampu LED berdaya total 30 Watt selama ±8 jam. Berdasarkan hasil penelitian, dapat disimpulkan bahwa PLTS portabel layak digunakan sebagai sumber energi listrik alternatif yang efisien, fleksibel, dan berkelanjutan untuk mendukung kegiatan budidaya ikan lele.

Analisis Perencanaan Sistem Tenaga Listrik Untuk Keandalan Operasional CCTV Berbasis Energi Terbarukan

M Rizki Liano, Pristisal Wibowo, Muhammad Erpandi Dalimunthe — Mon, 27 Apr 2026 00:00:00 +0700

Solar energy is a renewable energy source that can be effectively utilized to generate electricity through photovoltaic cells. This research aims to plan an off-grid Solar Power Plant (PLTS) at the Sejahtera Islamic Boarding School Multipurpose Building. The system is designed as an alternative energy source to ensure the continuous operation of a 24-hour CCTV security system. The methodology included literature studies, field observations, and data collection to design a reliable power system. Implementing a PLTS is highly recommended due to its minimal emissions and eco-friendly nature.

Based on the planning and analysis, implementing this off-grid PLTS to support the operational reliability of the CCTV system is highly feasible. The research location possesses adequate solar potential, with an average sunlight duration of approximately 4.5 hours per day. This capacity is sufficient to meet the 24-hour electrical energy needs of the CCTV and its supporting devices. System planning demonstrates that the daily load requirement of 432 Wh can be fulfilled using one 100 Wp solar panel module, two 12 V 33 Ah batteries, a 500 W inverter, and a 20 A Solar Charge Controller (SCC).

Ultimately, this off-grid PLTS ensures an uninterrupted electricity supply during PLN network outages. It serves as an environmentally friendly, economical, and sustainable solution to enhance CCTV-based security systems in Islamic boarding schools and similar facilities.

Analisis Kinerja Dan Efesiensi Sistem Kontrol Motor Induksi 3 Fasa Menggunakan Variable Speed Drive Pada Pompa Proses Fatty Acid Di PT. Permata Hijau Palm Oleo

Bagas Saputra, Ahmad Dani, Beni Satria — Mon, 27 Apr 2026 00:00:00 +0700

This study investigates the performance and energy efficiency of a three-phase induction motor controlled by a Variable Speed Drive (VSD) in a fatty acid pump system at the Permata Group processing plant. The research is motivated by the increasing need for energy savings and operational reliability in continuous industrial processes where pump load profiles are highly dynamic. The objective of this study is to evaluate the effectiveness of VSD implementation in reducing energy consumption and improving motor operating characteristics under real plant conditions. Data were collected during actual production cycles through direct measurement of electrical and mechanical parameters, including current, voltage, frequency, torque, flow rate, and power consumption. The analysis compares the performance of the pump system before and after the application of VSD, using descriptive statistical analysis and graphical evaluation of motor behavior under various load conditions. The results demonstrate that the application of VSD significantly reduces energy consumption at partial loads while maintaining stable pump output and minimizing mechanical stress. The motor also shows improved operating efficiency and lower thermal loading compared to constant-speed operation. These findings indicate that VSD-based control offers a practical and cost-effective solution for industrial pump systems, especially in fatty acid processing operations where flow demand fluctuates during production. The practical implications are substantial, highlighting opportunities for energy conservation, equipment longevity, and process optimization without compromising product quality or throughput, making the system suitable for broader adoption in similar industrial environments.

Pengembangan Sistem Pendeteksi Kantuk Pengemudi Berbasis Arduino Nano Dan Sensor Eye Blink

Jon Pranki Manik, Beni Satria, Hamdani — Tue, 28 Apr 2026 00:00:00 +0700

Driving safety has become a crucial issue in Indonesia due to the high number of traffic accidents caused by driver fatigue, particularly drowsiness that triggers microsleep and temporary loss of consciousness. This study aims to develop a driver drowsiness detection system based on Arduino Nano and infrared eye blink sensor that detects drowsiness indicators through blink frequency and duration, evaluates the effectiveness of early warnings via buzzer, and identifies technical constraints to enhance reliability in driving simulations. The research method employs a research and development approach with an experimental design, involving 15 participants aged 19-25 years tested in normal conditions and drowsiness simulations for 30 minutes per session, with data collection through eye blink sensor, Arduino Nano, and subjective validation using the Karolinska Sleepiness Scale. Testing shows the system achieves a microsleep detection accuracy of 98% based on eye closure duration exceeding 500 ms and 96% accuracy based on blink frequency below 12 times per minute, with an average response time of 178 ms until buzzer activation, thus capable of providing early warnings before full microsleep occurs. The implications of this research offer a portable, low-cost solution without reliance on complex infrastructure for mitigating accident risks in developing countries, although it still requires optimization against environmental variations such as lighting and head movements for real-world applications on the road.

ANALISIS PERBAIKAN JATUH TEGANGAN DAN REDUKSI RUGI DAYA MELALUI UPRATING KONDUKTOR SERTA PENYEIMBANGAN BEBAN PADA SISTEM DISTRIBUSI DI PT. PLN ULP TEBING TINGGI

Ismail, Dino Erivianto, Zuraidah Tharo — Tue, 28 Apr 2026 00:00:00 +0700

Analisis perbaikan jatuh tegangan dan reduksi rugi daya melalui uprating konduktor serta penyeimbangan beban pada sistem distribusi di PT. PLN ULP Tebing Tinggi. Sistem distribusi tenaga listrik sering menghadapi tantangan operasional signifikan pada jaringan tegangan rendah, terutama di wilayah dengan karakteristik panjang saluran besar, konduktor berpenampang terbatas, dan ketidakseimbangan beban antar fasa. Di ULP Tebing Tinggi, fenomena jatuh tegangan tinggi tercatat di ujung feeder jauh dari gardu utama, sementara rugi daya akibat aliran arus dan resistansi saluran menjadi beban biaya dan teknis bagi penyedia layanan. Penelitian ini menggunakan pendekatan kuantitatif berbasis analisis teknis yang menggabungkan pengukuran lapangan, perhitungan matematis, dan simulasi sistem tenaga menggunakan software ETAP. Pengukuran menunjukkan beban total gardu TT38 mencapai 91,69 kVA dengan ketidakseimbangan arus yang signifikan. Tegangan di ujung jaringan mengalami penurunan drastis menjadi 184 V dari tegangan pangkal 222-228 V, dengan jatuh tegangan sebesar 25,26% dan rugi daya 14,94 kW. Skenario uprating konduktor dengan mengganti kabel TIC 2×10 mm² menjadi TIC 3×70+1×50 mm² pada segmen 250 meter terakhir menunjukkan peningkatan signifikan. Hasil perhitungan dan simulasi ETAP konsisten menunjukkan penurunan jatuh tegangan dari 25,26% menjadi 3,61% (202,24 V) dan pengurangan rugi daya dari 14,94 kW menjadi 12,37 kW. Perbaikan ini berhasil membawa tegangan minimum ke dalam batas standar SPLN (198-231 V) yang sebelumnya tidak terpenuhi.

Desain Dan Pembangunan Sistem Layanan Virtual Penjualan Berbasis Website di PT. Adidaya Andalan Asia

Anjelita Septiurma Gea, Ricky Ramadhan Harahap, Rahmadani — Tue, 28 Apr 2026 00:00:00 +0700

The development of information technology has encouraged companies to shift from manual sales processes to more effective and efficient computerized systems. This study aims to design and develop a web-based virtual sales service system at PT Adidaya Andalan Asia that integrates centralized management of product data, customer data, sales transactions, and sales reporting. The system was developed using the PHP programming language and a MySQL database with a modular system architecture that is easy to expand. System testing was conducted functionally using the black-box method, including alpha testing by developers and beta testing by users, to ensure that the system operates according to requirements. The results show that the web-based virtual sales service system improves sales process efficiency, minimizes data recording errors, and provides accurate and easily accessible sales information to support evaluation and managerial decision-making at PT Adidaya Andalan Asia.

ANALISIS AUDIT ENERGI LISTRIK DAN INTENSITAS KONSUMSI ENERGI PADA GEDUNG KANTOR PLN UP3 BANGKINANG

Rinaldo Mirza H Sitorus, M. Erpandi Dalimunthe, Rahmaniar — Tue, 28 Apr 2026 00:00:00 +0700

This study aims to analyze the electrical energy performance of the PLN UP3 Bangkinang Office Building through a partial energy audit and to determine the Energy Use Intensity (EUI) as an indicator of energy efficiency. The methodology includes collecting historical electricity consumption data for 2024–2025, inventorying lighting and air conditioning systems, measuring illumination levels (lux) and indoor temperature, and evaluating compliance with SNI 6196:2011, SNI 6197:2020, and Minister of Energy and Mineral Resources Regulation No. 3 of 2025. The results indicate that the EUI value of the PLN UP3 Bangkinang Office Building was 39.33 kWh/m²/year in 2024 and 40.28 kWh/m²/year in 2025, with an average of 39.81 kWh/m²/year. These values are below the benchmark of EUI < 70 kWh/m²/year, categorizing the building as highly efficient. The lighting system analysis shows that most rooms comply with the maximum lighting power density (W/m²) standard, except for the Cendana Meeting Room, which exceeds the limit. In terms of illumination level, several rooms do not meet the minimum lux standard and require optimization without significantly increasing power consumption. Meanwhile, the air conditioning system operates within a comfortable temperature range and is in good condition, contributing to stable overall energy consumption. Overall, the PLN UP3 Bangkinang Office Building demonstrates highly efficient energy performance, with opportunities for improvement in lighting distribution optimization and sustainable energy management practices to maintain a balance between energy efficiency and occupant comfort.

Analisis Potensi Energi Listrik Tenaga Surya Atap Pada Gedung PT.WNS Menggunakan Software Helioscope

Dymas Halim, Ahmad Dani, Beni Satria — Tue, 28 Apr 2026 00:00:00 +0700

The use of rooftop solar power plants is one of the strategic solutions to support the energy transition and increase use of renewable energy in the industrial sector. This study aims to analyze the potential and performance of rooftop solar power plants at PT. Waruna Nusa Sentana building located in Medan City, North Sumatra, using a simulation approach based on HelioScope software. The analysis was carried out by utilizing Typical Meteorological Year weather data and technical parameters of the Photovoltaic (PV) system designed according geographical conditions and tropical climate of the study location. simulation results show that rooftop solar power system with an installed capacity of 47.36 kWp is capable of producing 66,699 kWh of annual electrical energy with a specific yield of 1,408.3 kWh/kWp/year. The system performance evaluation resulted in a performance ratio of 80.2%, indicating that the rooftop solar power system works efficiently and is in the good performance category for tropical regions. Loss analysis indicates that the largest energy losses come from the effects of cell temperature, followed by losses due to module mismatch, reflection, and losses in the inverter and AC system. Manual calculations performed as analytical verification demonstrated consistency with the simulation results, thus strengthening the validity of the approach used. This study demonstrates that the implementation of rooftop solar power plants in industrial buildings in Medan City is technically feasible and can be used as a reference in the planning and development of rooftop solar power plants in tropical regions with similar climate characteristics

Perancangan Sistem Monitoring Tegangan, Arus Dan Frekuensi Pada Pembangkit Listrik Tenaga Mikrohidro Berbasis IoT

Yohanes P Simanjuntak, Beni Satria, Amani Darma Tarigan — Tue, 28 Apr 2026 00:00:00 +0700

Hydropower plants (PLTA) remain the largest contributor to renewable energy generation capacity in Indonesia. As of October 2025, renewable energy generation capacity was recorded at 15,446.85 MW, with hydro contributing 6,539.17 MW and micro-hydro contributing 976.18 MW. Many micro-hydro locations operate in areas with limited access, so routine generator output checks are still often carried out through periodic visits to the location. Field observations reported in previous studies show that output conditions can fluctuate widely when there are load changes, including voltages from 160 V to 235 V and frequencies from 44 Hz to 51 Hz, which can potentially affect service quality and equipment operation. This study designed and implemented an Internet of Things (IoT)-based monitoring system to measure and report generator output voltage, load current, and frequency in real-time. The prototype integrates an ESP32 microcontroller, an AC energy measurement module, a local LCD display, and a cloud dashboard for remote visualization and time-stamped logging. The polling and transmission processes in the firmware are configured with a 5-second sampling interval to capture the dynamics caused by load changes while maintaining stable data delivery. Performance evaluation includes calibration against reference instruments, measurement of data update latency from acquisition to display on the dashboard, and tracking of transmission reliability through upload outcomes. The results of the study demonstrate a practical monitoring architecture, improve data availability for operators, and support operational decision-making without relying on frequent site visits.

SISTEM MONITORING PEMBERIAN MAKANAN TAMBAHAN BALITA BERBASIS WEB DI DESA KARANG REJO

Muhammad Al Fayed, Barany Fachri, Afif Badawi — Tue, 28 Apr 2026 00:00:00 +0700

Toddlerhood is a critical period in a child’s growth and development that significantly affects future health and cognitive outcomes. Adequate nutritional intake during this stage is essential to prevent growth disorders, particularly stunting. The Indonesian government has implemented various intervention programs, including the Supplementary Feeding Program (Pemberian Makanan Tambahan/PMT), to improve toddlers’ nutritional status and reduce stunting, especially in areas with high nutritional challenges. In Karang Rejo Village, the PMT program is actively implemented through community health posts (posyandu). However, the management of PMT data, including beneficiary records, monitoring of weight and height, and feeding schedules, is still conducted manually. This manual approach leads to data inaccuracies, difficulties in tracking historical records, potential data loss, and delays in reporting. In addition, the lack of integrated data hinders health workers and cadres from conducting effective and regular monitoring, which may impact the accuracy of nutritional interventions for toddlers at risk of stunting. To address these issues, this study proposes the development of a web-based monitoring system for the PMT program. The system is designed to facilitate structured data recording, periodic monitoring of toddlers’ nutritional status, and real-time reporting accessible to authorized users. The implementation of this system is expected to improve the effectiveness and efficiency of PMT services, support timely decision-making, and contribute to government efforts in reducing stunting rates and improving the overall health status of toddlers in Karang Rejo Village.

Rancang Bangun Sistem Layanan Pre-Order Produk UMKM Kain Tenun Berbasis Web untuk Meningkatkan Penjualan dengan Metode Prototype (Studi Kasus: Vanny Situmeang Ulos Tarutung)

Ruth Abelia Purba, Ricky Ramadhan Harahap, Rahmadani — Tue, 28 Apr 2026 00:00:00 +0700

Micro, Small, and Medium Enterprises (MSMEs) producing ulos woven fabrics play an important role in cultural preservation as well as community economic development. However, at Vanny Situmeang Ulos Tarutung MSME, product orders are still carried out through direct conversations or short messages, resulting in poorly documented order records, difficulty in tracking orders, and potential errors. In addition, customers experience difficulties in obtaining product information and monitoring order progress. This condition also limits the marketing reach of the products. This study aims to provide a web-based pre-order service for ulos woven fabric products that can assist order management, facilitate customers in placing orders, and expand marketing coverage. The method used is the prototype method, which involves creating an initial model based on user requirements, followed by evaluation and refinement until the final result is achieved. Research data were obtained through observation and interviews with the MSME owner. The results show that the web-based pre-order service is able to store order data in an organized manner, facilitate order management by the MSME, and provide convenience for customers in accessing product information and placing orders. Furthermore, the web platform enables the products to reach a wider audience, thereby increasing sales potential. Therefore, the developed service can support the sustainable growth of ulos woven fabric MSMEs.

SISTEM LAMPU PARKIRAN OTOMATIS BERBASIS ARDUINO UNO DAN SENSOR LDR PADA PARKIRAN GEREJA

Andreas Rofrans Sadewa Sitanggang, Hafni, Muhammad Zen — Tue, 28 Apr 2026 00:00:00 +0700

Efficient use of electrical energy is a crucial aspect in the management of public facilities, including houses of worship. In church parking areas, manual lighting systems often lead to electricity waste. This research aims to implement lighting automation technology by utilizing an Arduino Uno microcontroller and a Light Dependent Resistor (LDR) sensor. Through a prototype design approach, this system was developed to detect the level of light intensity in the surrounding environment in real-time. Test results show the effectiveness of the system in controlling the lights: the device will activate the lights when the light intensity is above 850 lux (dim/dark conditions) and deactivate them when below 849 lux (bright conditions). The implementation of this innovation is expected to reduce electricity operational costs while increasing safety factors in the church environment.

Rancang bangun Sistem Informasi Reservasi dan Stok Pada Harni Salon Berbasis Web

M. Farhan, Muhammad Zen, Barany Fachri — Tue, 28 Apr 2026 00:00:00 +0700

Beauty salons are service businesses that require precise management of service schedules and product stocks to maintain service quality and customer satisfaction. Manual reservation and stock management has the potential to cause recording errors, schedule conflicts, and product inventory discrepancies. Therefore, this study aims to design and implement a web-based Harni Salon Reservation and Stock Information System. The research methods used include system requirements analysis, system design using modeling diagrams, PHP and MySQL-based system implementation, and functional testing using the black box testing method. The results of the study indicate that the system is able to manage customer data, services, reservations, and product stocks in an integrated manner and displays reservation and inventory report information well. This system also allows customers to make service reservations independently based on available schedules, while the admin can confirm reservations and monitor product stocks in real-time. The conclusion of this study is that the implementation of a web-based information system can improve operational efficiency and service quality at Harni Salon. The benefits of this study are expected to be a reservation and stock management solution for salon businesses and become a reference for the development of similar systems in the future.

Perancangan Sistem Perpustakaan Berbasis Web Di Smp Negeri 18 Medan

Silvia, Suheri, Hendry — Tue, 28 Apr 2026 00:00:00 +0700

School libraries play an important role in supporting learning activities and improving students’ literacy. However, library management in many junior high schools is still carried out manually, causing various problems such as difficulties in searching book data, high risk of recording errors in borrowing and returning transactions, and delays in report generation. This study aims to design and implement a web-based library system to improve the efficiency of library management at SMP Negeri 18 Medan. The research method used is the System Development Life Cycle (SDLC) with the Waterfall model, which consists of problem identification, data collection, requirements analysis, system design, implementation, and system testing. Data were collected through observation, interviews, and literature study. The results show that the developed web-based library system is able to manage book collections, member data, and borrowing and returning transactions in an integrated and accurate manner. In addition, the system facilitates report generation and improves access to library information for students and teachers. Therefore, the proposed system is considered an effective solution for enhancing the quality of school library services and supporting the utilization of information technology in the educational sector.

Sistem Informasi Pengelolaan Data Inventaris Berbasis Web di SMPN 18 Medan

Triwindi Ramadana, Leni Marlina, Hendry — Tue, 28 Apr 2026 00:00:00 +0700

Inventory management is an important activity in educational institutions to ensure that facilities and infrastructure can be monitored and utilized effectively. SMP Negeri 18 Medan still manages inventory data manually using separate physical records and spreadsheet files, which leads to data redundancy, recording errors, and difficulties in searching and reporting inventory information. This study aims to develop a web-based inventory data management information system to improve the efficiency and accuracy of inventory management at SMPN 18 Medan. The research methodology used is a software development method based on the System Development Life Cycle (SDLC), which includes requirement analysis, system design, implementation, and testing. The system is developed using HTML, CSS, PHP, JavaScript, and MySQL as the database. The results show that the developed system is able to organize inventory data centrally, facilitate data search, support asset monitoring, and generate inventory reports more efficiently. The system helps reduce recording errors and supports better decision-making related to school asset management.

Strategi UI/UX Dalam Meningkatkan Engagement Pada Aplikasi Toko Online Galery Parfum Dengan Metode User-Centered Design (UCD)

Gynandra Alexsander Ginting , Sri Wahyuni, Hermansyah — Tue, 28 Apr 2026 00:00:00 +0700

The rapid growth of e-commerce requires online shopping applications to focus not only on transactional functionality but also on the quality of User Interface (UI) and User Experience (UX) in order to enhance user engagement. This study aims to design and evaluate UI/UX strategies for the Galery Parfum online store application through the implementation of the User-Centered Design (UCD) method. This method was selected because it places users at the core of each design stage, enabling the development of solutions that are more aligned with users’ needs and characteristics. The research was conducted through four UCD stages: Understand Context of Use, Specify User Requirements, Design Solutions, and Evaluate Against Requirements. Data were collected through observations, questionnaires, and prototype usability testing involving users. The results indicate that users require a simple interface, intuitive navigation, and informative fragrance descriptions to support online purchase decision-making. The application prototype was developed using Figma, incorporating clear user flows for both customers and administrators. Usability evaluation using the System Usability Scale (SUS) yielded an average score of 77.75, which falls into the Good category with an acceptable level of acceptability. These findings demonstrate that the UI/UX design of the Galery Parfum application has good usability and contributes to improving user experience and engagement. This study is expected to serve as a reference for the development of UI/UX in e-commerce applications, particularly for experience-based products such as perfumes.

Penerapan Teknologi IOT untuk Monitoring Keamanan Kandang Ayam Broiler Berbasis Sensor Magnetik dan Mikrokontroler ESP 32 CAM

Ketria Nursabila, Hafni, Muhammad Zen — Tue, 28 Apr 2026 00:00:00 +0700

The The increase in theft cases along with technological developments demands a more effective security system. By 2025, the broiler chicken coop partner PT. Ciomas Adisatwa experienced a theft case so that an improvement of the security system was needed. This research aims to apply Internet of Things (IoT) technology to monitor the security of broiler chicken coops using magnetic sensors and ESP32-CAM microcontrollers with telegram notifications. The system design is carried out using the waterfall method which includes the stages of needs analysis, design, testing, and implementation. A magnetic sensor is used to detect the movement of the cage door, and then the ESP32-CAM microcontroller processes the signal to activate the alarm and send notifications in real-time via Telegram. The test results show that the system can function properly and is able to improve the safety of the broiler chicken coop.

Sistem Rekomendasi Wisata Edukasi Ramah Anak Menggunakan Metode TOPSIS Berbasis Web

Wardah Ramadhani, Barany Fachri, Ruly Dwi Arista — Tue, 28 Apr 2026 00:00:00 +0700

Child-friendly educational tourism is a form of tourism that provides not only entertainment but also educational value to support children’s development. However, selecting appropriate educational tourism destinations often becomes a challenge for parents and schools due to the need to consider multiple criteria, such as safety, facilities, accessibility, and educational value. Limited integrated information and difficulties in comparing available alternatives further complicate the decision-making process. This study aims to design and develop a web-based recommendation system for child-friendly educational tourism using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. The TOPSIS method is applied to generate objective and measurable recommendations based on predetermined criteria. The developed system is expected to assist parents and schools in selecting safe, comfortable, and educational tourism destinations that meet children’s needs, thereby improving the effectiveness and accuracy of the decision-making process.

PERANCANGAN SISTEM INFORMASI PERPUSTAKAAN BERBASIS WEBSITE PADA SEKOLAH SMP SWASTA BUDI LUHUR DENGAN METODE WATERFALL

Niko Simahate, Nova Mayasari, Muhammad Zen — Tue, 28 Apr 2026 00:00:00 +0700

The library plays an important role in supporting teaching and learning activities in schools. However, library management at Budi Luhur Private Junior High School is still conducted manually, leading to inefficiencies in data processing, book searches, and borrowing transactions. This study aims to design and develop a website-based library information system to improve the effectiveness and efficiency of library management. The system was developed using the Waterfall method, which consists of requirement analysis, system design, implementation, testing, and maintenance. Data collection was carried out through observation, interviews, and documentation to identify system requirements. The system was implemented using PHP as the programming language and MySQL as the database. Black box testing was applied to evaluate system functionality based on input-output conformity. The results show that the developed system is capable of managing book data, member data, borrowing and returning transactions, and generating visitor and borrowing reports accurately and efficiently. Testing results indicate that all system functions operate as expected. The implementation of this system contributes to the digital transformation of school library management, improves service quality, and provides easier access to information for librarians and students. This research demonstrates that a website-based library information system developed using the Waterfall method can be an effective solution for modernizing school library services.

Perancangan Smart Trolley dengan Fitur Penghitung Barang Menggunakan Sensor E18-D80nk Berbasis Arduino Uno

M Naufal Mubarak Lubis, Hafni, Muhammad Zen — Wed, 29 Apr 2026 00:00:00 +0700

The rapid development of the retail industry requires technological innovation to improve efficiency and enhance customer convenience during shopping activities. One common issue in supermarkets is that customers often forget the number of items placed in their shopping carts, leading to time inefficiency and potential disruption of shopping flow. This study aims to design and develop a Smart Trolley system based on Arduino Uno using the E18-D80NK distance sensor to automatically count the number of items. The system operates by detecting objects through infrared signals, processing the data via a microcontroller, and displaying the item count in real time on a 16x2 LCD screen. The device is equipped with additional features, including a stop-count button, item subtraction button, and reset function to enhance operational flexibility. Testing results indicate that the system is capable of accurately counting items and operates under stable voltage conditions according to component specifications. The proposed Smart Trolley is expected to assist customers in monitoring their shopping items accurately, improve time efficiency, and serve as an initial step toward simple technological implementation in the digital transformation of the retail sector.

Perancangan Sistem Absensi Dan Nilai Siswa Berbasis Web Menggunakan Metode Waterfall Pada SMP Swasta Brigjend Katamso 2 Medan

Dea Monica Putri, Hendry, Afif Badawi — Tue, 28 Apr 2026 00:00:00 +0700

In a school environment, managing student academic data, such as attendance and grades, is a vital component that requires high accuracy and efficiency. This data serves not only as an administrative record but also as a basis for evaluating student and school performance. At Brigjend Katamso 2 Middle School in Medan, attendance and grade management still uses manual methods, which can lead to errors and delays. This research uses the Waterfall method to create a prototype system design that can present web-based student attendance and grade data quickly and accurately, and facilitate more efficient reporting for the school. The Waterfall method was chosen because of its systematic and sequential approach, ensuring each development stage (analysis, design, implementation, testing) is completed thoroughly and in a structured manner, resulting in a robust system that meets the school's specific needs. The results of this research are expected to provide a description of the information system development process using the Waterfall method.

Optimasi Keandalan Proteksi melalui Pengujian Fungsi dan Karakteristik Overcurrent Relay dan Ground Fault Relay

Ruth Stevani Br Padang, Siti Anisah — Tue, 28 Apr 2026 00:00:00 +0700

The reliability of an electrical protection system plays a highly crucial role in maintaining the continuity and stability of power distribution to consumers. One of the main factors determining this reliability is the performance of protection devices, particularly the Overcurrent Relay (OCR) and Ground Fault Relay (GFR). These relays act as the first line of defense in detecting and interrupting fault currents that occur within the electrical power system. Any inaccuracy in function, improper settings, or deviations in relay operating characteristics can lead to serious consequences, such as delays in fault clearing, expansion of the affected area, or even a complete failure of the protection system. This study aims to optimize the reliability of the protection system through functional and characteristic testing of the OCR and GFR installed at the Muara Teweh Substation, which operates under the jurisdiction of UP2D South and Central Kalimantan. The research methodology includes a series of tests on key parameters such as operating time, pickup current, time coordination between relays, and selectivity level in response to short-circuit and ground fault disturbances. The test data were analyzed to evaluate the conformity between actual performance and the predetermined relay settings. The results indicate that the relays at the Muara Teweh Substation are in good working condition and perform according to their expected characteristics. Recommendations for relay setting adjustments were also proposed to further improve protection system effectiveness. Through regular testing and proper calibration, the reliability of the protection system can be consistently maintained.

Aplikasi Penjualan Mobil Pada Gocah Garage Berbasis Website Menggunakan Metode Flat Rate

Albin Setiawan, Supina Batubara, Barany Fachri — Wed, 29 Apr 2026 00:00:00 +0700

The process of car sales, especially credit-based transactions, requires accurate data management and precise installment calculations to support customer decision-making. Gocah Garage, as a car showroom that provides both cash and credit sales services, still performs installment simulations manually using calculators and spreadsheet applications, which is time-consuming and prone to calculation errors. This study aims to develop a web-based car sales application that implements the Flat Rate method to calculate credit installments accurately and efficiently. The research method used is a software development method with the Waterfall model, which includes requirement analysis, system design, implementation, and testing. The application is developed using HTML, PHP, JavaScript, and MySQL as the database. The results show that the developed system is able to manage car data, customer data, and sales transactions effectively, as well as automatically calculate monthly installments using the Flat Rate method. The application helps reduce calculation errors, speeds up the sales process, and improves service quality at Gocah Garage.

Perancangan UI/UX Aplikasi Mobile Monitoring Barang Rusak dan Retur di Mencirim Swalayan dengan Metode User-Centered Design

Al Yafi Ramadhan, Ruly Dwi Arista, Heni Wulandari — Tue, 05 May 2026 00:00:00 +0700

Operational efficiency in the retail business heavily relies on accurate inventory management systems, particularly in handling damaged goods and return processes. Mencirim Swalayan currently faces challenges due to manual recording procedures that trigger data error risks and response delays. This research aims to design the User Interface (UI) and User Experience (UX) of a mobile monitoring application tailored to operational needs using the User-Centered Design (UCD) approach. The UCD method is employed to ensure the design focuses on end-user needs through four main stages: understanding the context of use, specifying user requirements, designing solutions, and evaluation. The result of this study is an application design that integrates barcode scanning, physical photo documentation, and a real-time return status monitoring dashboard. Design evaluation was conducted using the System Usability Scale (SUS) instrument with 10 respondents, yielding an average score of 79.5. These results indicate that the application has a usability level in the "Good" category with an "Acceptable" rating, making it feasible for implementation to improve data accuracy and staff work efficiency at Mencirim Swalayan.

PERANCANGAN SISTEM PEMBAYARAN MAKANAN DAN MINUMAN BERBASIS WEB PADA CAFE RUMAH SI DALANG MENGGUNAKAN METODE R&D

Dwi Rizky Ramadhani, Muhammad Iqbal, Abdul Khaliq — Mon, 04 May 2026 00:00:00 +0700

The rapid advancement of information technology has significantly influenced various sectors, including payment methods in the culinary business. Manual payment processes often result in delays, inaccuracies in recording, and lack of transparency. This study aims to design and implement a webbased payment system for Cafe Rumah Si Dalang using the Research and Development (R&D) approach. The research process includes requirement analysis, system design, implementation, and testing. The findings indicate that the developed system can streamline the payment process, enhance accuracy, and minimize human errors. Its user-friendly interface allows both cashiers and customers to use the system efficiently. This research is expected to serve as a digital payment solution for culinary businesses and provide a reference for future development, including QRIS integration and automated financial reporting features.

PERANCANGAN WEBSITE MULTIMEDIA SEBAGAI MEDIA PROMOSI DAN INFORMASI DI CABANG UTAMA CV. GAPA AC MOBIL

Bagas Alivia Muhammad, Ricky Ramadhan Harahap, Nova Mayasari — Mon, 04 May 2026 00:00:00 +0700

The development of information technology encourages business actors to optimize digital media as a means of communication and promotion. The main branch of CV. Gapa AC Mobil currently does not have an integrated official website, so the delivery of service information and workshop activities is still limited. This research aims to develop a multimedia website that is able to become an information center as well as a digital promotional media for the company. The system development method applied is the Systems Development Life Cycle (SDLC) with the Waterfall model which is carried out in stages starting from needs analysis, system design, database design, implementation, testing, to the maintenance stage. The design includes the development of a responsive and structured interface and the design of a database using MySQL managed through phpMyAdmin to support the management of service data, portfolios, and company information. The implementation of the system is carried out using PHP as the main programming language combined with HTML, CSS, and JavaScript to build an interactive display. The test is carried out using the Black Box Testing method to ensure that each feature runs according to the specifications of the needs. The results of the development show that the resulting website is able to present information in a more organized manner, improve ease of access for customers, and support the company's digital promotion strategy. The existence of this website is expected to strengthen the professional image and increase the competitiveness of CV. Gapa AC Mobil in the face of

Perancangan Sistem Kasir Dan Laporan Keuangan Berbasis Web Pada Toko Andi Elektrik

Andi Arianto Limbong, Abdul Khaliq, Barany Fachri — Mon, 04 May 2026 00:00:00 +0700

The development of information technology is encouraging businesses to shift from manual to digital systems to improve the efficiency and accuracy of data management. Tokoh Andi Elektrik, which sells electrical equipment, still records transactions, inventory, and financial reports manually, potentially leading to recording errors, reporting delays, and the risk of data loss. This research aims to design and build a web-based cashier and financial reporting system capable of managing sales transactions, product data, inventory, catalogs, and generating financial reports automatically and in a structured manner. The system development method used is the Waterfall method, which includes requirements analysis, system design, implementation, testing, and maintenance. The system was developed using PHP, MySQL, HTML, CSS, and JavaScript and implemented in a localhost environment. The results show that the system can improve transaction process efficiency, simplify inventory management, and produce faster, more accurate, and more secure financial reports. With this system, it is hoped that Tokoh Andi Elektrik's operational management will be more effective and support optimal business decision-making.

RANCANG BANGUN SISTEM INFORMASI PENGADUAN MASYARAKAT BERBASIS WEB PADA DINAS KOMINFO KABUPATEN LANGKAT

Iqbal Hanafi Ilham, Hanna Willa Dhany, Afif Badawi — Mon, 04 May 2026 00:00:00 +0700

The Department of Communication and Informatics (Kominfo) of Langkat Regency plays an important role in receiving and handling public complaints related to public services. Previously, the complaint process was conducted manually through paper forms, short messages, and face-to-face reporting, which caused several problems such as delays in report delivery, difficulties in tracking complaint histories, and lack of transparency for the public. This study aims to design and develop a web-based Public Complaint Information System to improve report management effectiveness and public service quality. This research applies a software engineering approach using the Waterfall development model consisting of problem identification, data collection, requirement analysis, system design, implementation, testing, and evaluation. The system was developed using PHP, HTML, CSS, and JavaScript programming languages with a MySQL database. The main features include online complaint submission, report management by administrators, complaint status monitoring by the public, and automatic report generation. The results show that the developed system facilitates the public in submitting complaints without visiting the government office directly. In addition, the system assists officers in managing complaint data in a structured manner, accelerates complaint handling processes, and increases transparency in public services. Therefore, the web-based public complaint information system can be an effective solution to support faster, more accurate, and efficient services at the Langkat Regency Kominfo Office.

Rancangan Sistem Monitoring Dan Pengaturan Energi Listrik Menggunakan Jaringan Internet Berbasis NODEMCU

M. Fiqri Haikal, Hamdani, Beni Satria — Thu, 30 Apr 2026 00:00:00 +0700

As more and more people use electricity, we need a good way to monitor how much energy is being used in real-time. The goal of this study is to create and implement a system that can monitor how much power is being used in a room. The system will use a NodeMCU microcontroller and a YHDC SCT-013-000 current sensor, and the MQTT protocol will be used to send data. Current sensors measure the electric current in the power source. The NodeMCU then processes this information and sends it via WiFi to the server, where it is displayed on the monitoring application. This study uses hardware design, software design, and system testing methodologies to assess the performance and accuracy of the sensors used. When the device is turned off, the YHDC SCT-013-000 current sensor can read the electric current with a difference of 0.03 Amper. When the device is turned on, it can detect a current with a difference of 0.17 Amperes compared to a clamp multimeter. The system also connects to a WiFi network and provides data to the server using the MQTT protocol. This makes it possible to see how much electricity is being used in real-time through websites and apps. So, the built system can be used to monitor how much electricity is consumed in an easier, more efficient, and more useful way

ANALISIS PERENCANAAN PLTS SEBAGAI SUPPLY ENERGI LISTRIK CHARGE STATION DI BRANDA CAFE UNIVERSITAS PEMBANGUNAN PANCA BUDI

Muhammad Farijal, Pristisal Wibowo, Dino Erivianto — Thu, 30 Apr 2026 00:00:00 +0700

availability of sustainable electrical energy is an essential requirement in the campus environment, particularly to support academic activities of students and academic staff in the use of electronic devices such as mobile phones and laptops. Currently, charge station facilities generally rely on conventional electrical energy supplied by the national grid, which has limitations and causes environmental impacts. Therefore, the utilization of renewable energy is an alternative solution that needs to be developed. This study aims to analyze the planning of a Solar Power Plant (Photovoltaic System) as a source of electrical energy for charge stations at Branda Cafe, Universitas Pembangunan Panca Budi. The research method employed is a quantitative descriptive approach, which includes analysis of daily electrical energy demand, charge station design planning, calculation of the number and capacity of solar panels, battery capacity planning, and selection of supporting PLTS components such as solar charge controllers and inverters. The results show that the total daily electrical energy demand of the charge station is 3,600 Wh. To meet this demand, the PLTS system is designed using nine 100 Wp solar panels, three 12 V 100 Ah batteries, one MPPT-type solar charge controller, and a 5,000 W inverter. The designed PLTS system is capable of providing a reliable, independent, and environmentally friendly electricity supply. Thus, the implementation of PLTS-based charge stations on campus can serve as an alternative solution to support sustainable renewable energy.

Studi Pengendalian Aliran Daya Pada Jaringan Listrik Tenaga Surya Terintegrasi Menggunakan Model Predictive Control

Raihan Fahrezi, Hamdani, Beni Satria — Thu, 30 Apr 2026 00:00:00 +0700

The global energy transition towards sustainable sources has driven massive integration of Solar Power Plants (PLTS) into electricity systems, yet their intermittent nature presents significant operational challenges, particularly in low-voltage distribution networks. This research investigates the application of Model Predictive Control (MPC) for optimal power flow management in a 220V electrical network integrated with photovoltaic generation. The study addresses two main problems: designing an effective MPC strategy to control active and reactive power flow against solar irradiance variability, and quantitatively evaluating its performance compared to conventional Proportional-Integral (PI) control. Using MATLAB/Simulink simulation, a radial 5-bus 220V distribution network model with 10 kVA PV capacity was developed. The MPC algorithm was implemented with a prediction horizon of 15 steps, control horizon of 5 steps, and 1-second sampling time, optimizing voltage regulation and power loss minimization while respecting system constraints. Simulation results across three operational scenarios—irradiance step change, load variation, and combined disturbance—demonstrated MPC's superior performance. Specifically, MPC maintained voltage within ANSI C84.1 limits (±5%) with a Voltage Regulation Index of 0.021-0.025, achieved faster recovery times (8-12 seconds versus 18-25 seconds for PI), and reduced total power losses by 15-18%. The anticipatory control capability of MPC effectively mitigated voltage deviations caused by rapid irradiance fluctuations and load changes. These findings confirm that MPC offers a robust, proactive solution for enhancing stability and efficiency in low-voltage distribution networks with high solar penetration. The research contributes to renewable energy integration literature and provides practical insights for grid operators in managing power quality challenges.

Penanggulangan Transformator Distribusi Berbeban Lebih Dengan Metode Sisip Trafo Pada Penyulang PW-02 PT PLN (Persero) ULP Subulussalam Kota

Filia Berkat Nanda Lumbantobing, Hamdani — Thu, 30 Apr 2026 00:00:00 +0700

Distribution transformer is one of the most important components in the distribution of electric power from distribution substations to customers. Distribution transformers that experience loads exceeding 80% of the transformer capacity will affect the life of the distribution transformer and can also affect the level and quality of service to consumers and have the potential for disruption. Therefore, it is necessary to take action so that the percentage of distribution transformer loading does not exceed the transformer capacity by installing an Insert Transformer. At PT. PLN (Persero) ULP SUBULUSSALAM KOTA, there is a transformer that experiences overloading that occurs at the SKI072-00 Distribution Substation of 96.016% and after the Insert Transformer is installed, the loading at the SKI072-00 substation becomes 43.27%. This proves that the installation of an Insert Transformer is a fairly good method for overcoming overload disturbances at the SKI072-00 Substation, so that it can extend the life of the transformer, improve the quality of service to customers and reduce the potential for disturbances because the transformer loading below 80% can work well.

Pengaruh Penyesuaian Rating Fuse Cut Out (FCO) Percabangan terhadap Penurunan Frekuensi Gangguan Tegangan Menengah pada Penyulang TPN06 ULP Rantau UP3 Barabai

Pandea Triaska Prasera, Pristisal Wibowo, Reza Juliangga — Thu, 30 Apr 2026 00:00:00 +0700

The reliability of medium-voltage (MV) distribution networks is strongly influenced by the performance of protection systems, particularly Fuse Cut Outs (FCO) installed at feeder branches. TPN06 feeder at PT PLN (Persero) ULP Rantau, with a total network length of 15 km and 23 distribution transformers, experienced a high disturbance frequency during August–September 2024, with 8 recorded Auto Reclose Ground Fault (AR GF) incidents. Initial evaluation revealed that most installed FCO ratings were not aligned with the actual branch load currents. Several FCOs were found to be overrated, including Pulau Kutil (4 A adjusted to 2 A), Balai Pesona (4 A to 2 A), Sei Impat (4 A to 2 A), PR Binderang (4 A to 2 A), Jati Makmur (5 A to 2 A), Budi Mulya (5 A to 3 A), and Lokpaikat (25 A to 12 A), while only Bitahan (3 A) and PR Permata (2 A) were appropriately rated. This study aims to evaluate the effectiveness of FCO rating adjustments based on actual load current measurements and three-phase apparent power calculations at 20 kV. The methodology includes disturbance data analysis, peak load current measurement using an ampere clamp, and branch current calculation. The results indicate that adjusting FCO ratings improved protection selectivity and coordination, enabling better fault localization at branch levels. Following the adjustment at the end of September 2024, the disturbance frequency significantly decreased during October–November 2024, reaching zero incidents.

Kendali Kecepatan Motor Induksi Satu Fasa Pompa Submersible Menggunakan Fuzzy Logic

Suci Wulan Dari, Beni Satria, Ahmad Dani — Thu, 30 Apr 2026 00:00:00 +0700

This study develops and implements a Fuzzy Logic Controller (FLC) for speed control of single- phase induction motors in submersible pump applications, addressing the critical need for energy-efficient variable speed drives in domestic and small-scale agricultural water systems. Single-phase induction motors are widely used in submersible pumps due to their simplicity and cost-effectiveness, yet conventional constant-speed operation results in significant energy waste under varying load conditions. The research employs both simulation using MATLAB/Simulink and experimental validation with a 0.75 kW motor-pump prototype to evaluate FLC performance against conventional PID controllers. The FLC is designed with seven triangular membership functions for each input (speed error and error rate of change) and output (frequency change), implementing 49 fuzzy rules based on expert knowledge. Experimental results demonstrate that FLC achieves superior performance with 38.58% faster rise time, 40.64% shorter settling time, 61.89% lower overshoot, and 74.49% smaller steady-state error compared to PID across various setpoint speeds. Energy efficiency analysis reveals 12.98% energy savings at 25% load and consistent improvements across all operating conditions, with weighted average efficiency of 67.55% versus 62.70% for PID. The FLC also exhibits excellent robustness under parameter variations, maintaining acceptable performance even with 20% resistance increase and 10% voltage drop. Power quality metrics show 3.45% higher power factor and 27.06% lower current Total Harmonic Distortion. Implementation costs remain identical to PID systems, providing superior performance without additional hardware investment. This research contributes practical solutions for national energy efficiency programs, with potential aggregate savings of hundreds of GWh annually if

Perancangan Sistem Pengemasan Barang Otomatis Berbasis PLC Omron

Marsal Nasution, Ahmad Dani, Solly Aryza Lubis — Thu, 30 Apr 2026 00:00:00 +0700

This research aims to design and test Omron's PLC-based automated goods packaging system in the product packaging process. The system combines PLC technology, industrial robots, and sensors to improve efficiency and accuracy in packaging. The test was conducted in two modes, namely manual mode and automatic mode, with a focus on the filling process, bottle cap placement, and bottle cap sealing. The test results showed that in manual mode, the system can pack one bottle in a row, while in automatic mode, the system can pack three bottles efficiently with an efficiency of up to 99.99%. In addition, tests on the actuator and sensor show that all components are in good working order, and the system can detect the position of the bottle as well as control the milk flow with precision. The use of Omron's PLC as a control center provides ease of programming and improves system reliability. Overall, the study shows that Omron's PLC-based automated packaging system is effective in increasing productivity and reducing reliance on manual labor, with the potential to be applied in large-scale packaging industries.

Perancangan Game Parkour 3D Sebagai Media Pembelajaran Edukatif Berhitung Berbasis Roblox Studio

Haikal Pratama Marpaung, Hendry, Hanna Willa Dhany — Thu, 30 Apr 2026 00:00:00 +0700

The rapid development of digital technology provides significant opportunities for utilizing games as interactive learning media, particularly in mathematics, a subject often perceived as difficult and less engaging by elementary school students. This study aims to design and develop a 3D Parkour Game as an educational medium for arithmetic learning using Unity. The method applied in this research is the Game Development Life Cycle (GDLC), which consists of the stages of initiation, pre-production, production, beta, and release. During the design phase, flowcharts and Finite State Machine (FSM) models were employed to illustrate the gameplay flow and character behavior mechanisms within the game. The results indicate that the developed game is capable of delivering a more interactive, challenging, and enjoyable learning experience through a 3D parkour concept. In this game, players control a robot character to overcome various obstacles and reach the finish line. Beyond serving as an entertainment medium, the game also has the potential to enhance students’ cognitive skills, including focus, concentration, decision-making, and visual-motor coordination. Therefore, the 3D Parkour Game is considered a viable alternative medium for arithmetic learning and holds potential for further development through the integration of more complex mathematical materials and empirical classroom-based effectiveness testing.

Analisis Kinerja Sistem Pembangkit Listrik Industri Pabrik Kelapa Sawit Di PT Palem Segar Lestari Desa Tepian Nunukan Barat Kabupaten Nunukan Kalimantan Utara

Andri Supriadi, Dino Erivianto, Siti Anisah — Thu, 30 Apr 2026 00:00:00 +0700

Palm oil mills produce biomass in the form of fibre and shells that have the potential to be utilised as an energy source for internal power generation. This study aims to analyse the performance of the biomass-based power generation system at the PT Palem Segar Lestari Palm Oil Mill in terms of generator capacity suitability, energy efficiency, and operational stability. The research method used is a descriptive quantitative approach through the measurement of operational parameters and technical performance analysis based on thermodynamic principles and energy balance. The analysis was conducted on the mill's processing capacity, process steam requirements, biomass heat energy, boiler steam production, and steam turbine power. The results showed that at an operating capacity of around 45 tonnes of fresh fruit bunches per hour, the minimum steam requirement reached ±27,000 kg/hour, and the power generation system was capable of producing electricity according to the mill's needs with an electricity consumption intensity of 15–17 kW/tonne of fresh fruit bunches. Overall, the biomass power generation system at PT Palem Segar Lestari demonstrates effective performance in supporting independent factory operations with potential for optimisation in fuel management and boiler efficiency.

Sistem Monitoring Kualitas Air Akuakultur Real-Time Berbasis IoT Menggunakan Sensor pH, Suhu, Dan Kekeruhan Dengan Notifikasi Telegram

M. Aryan Syah, Beni Satria, Ahmad Dani — Thu, 30 Apr 2026 00:00:00 +0700

Aquaculture productivity is highly dependent on maintaining optimal water quality, yet traditional manual monitoring methods are labor-intensive and lack real-time capability. This study addresses this gap by designing and implementing an IoT-based real-time water quality monitoring system specifically for aquaculture, integrating pH, temperature, and turbidity sensors with Telegram notifications. The research and development (R&D) approach was employed to build a prototype system consisting of sensor nodes (ESP32 microcontroller with pH, DS18B20 temperature, and TSW-10TM turbidity sensors), a cloud server for data processing, and a Telegram Bot for instant alerts. System testing evaluated sensor accuracy, data transmission reliability, and notification effectiveness. The results demonstrated that the system performed with high accuracy, showing strong correlation (r > 0.99) with standard measurement tools and an average error below 3%. The data communication proved reliable, achieving a Packet Delivery Ratio (PDR) of 98.7% with an average end-to-end latency of 2.3 seconds. Crucially, the Telegram notification mechanism was 100% effective, delivering all threshold breach alerts with an average latency of only 3.8 seconds. These findings confirm the system's potential as a practical, efficient, and affordable solution for precision aquaculture. It enables continuous monitoring and provides early warnings, empowering farmers to take immediate corrective actions to prevent stock stress and economic losses, thereby contributing to the sustainability of small to medium-scale aquaculture operations in Indonesia.

Optimalisasi Sistem Charging Induktif Electric Vehicle Menggunakan Algoritma PID Berbasis ESP-32

M. Agung Irwansyah, Beni Satria, Ahmad Dani — Thu, 30 Apr 2026 00:00:00 +0700

The widespread adoption of electric vehicles (EVs) is hindered by the practicality and efficiency of charging infrastructure. Inductive wireless power transfer (WPT) offers a promising alternative, but its output stability is challenged by variations in air-gap distance, magnetic coupling, and load. This research aims to optimize the stability and dynamic response of an inductive EV charging system by implementing a Proportional-Integral-Derivative (PID) control algorithm on an ESP-32 microcontroller. The ESP-32 was selected for its computational capability, built-in Wi-Fi/Bluetooth connectivity, and cost-effectiveness. The study employs a laboratory-scale prototype with series-series compensation. A one-group posttest-only design was used, testing nine scenarios combining three air-gap distances (2, 4, 6 cm) and three resistive loads (10, 20, 30 Ω). System performance was evaluated based on steady-state error (SSE) and settling time (t_s). The results show that the PID control significantly reduced the SSE to below 3% across all tested conditions, representing an average error reduction of 89.6% compared to the open-loop system. The settling time for a step load change was 120 ms, demonstrating a fast dynamic recovery. The system also effectively compensated for lateral misalignment. The integrated Wi-Fi module enabled real-time remote monitoring. This study concludes that an ESP-32-based PID controller provides a stable, responsive, and connected control solution for inductive EV charging systems, offering a cost-effective alternative to more complex hardware platforms.

Pengaduk Pakan Ayam Otomatis Berbasis IoT

Nabila Patawa Siregar, Pristisal Wibowo, Ahmad Dani — Thu, 30 Apr 2026 00:00:00 +0700

The development of Internet of Things (IoT) technology has significantly influenced the livestock sector, particularly in improving the efficiency of feed management in poultry farming. Manual feed mixing is still widely applied, despite its limitations in terms of time, labor, and feed uniformity. This study aims to design and evaluate the performance of an IoT-based automatic chicken feed mixing system to enhance operational efficiency and real-time monitoring. The research employs a quantitative experimental approach based on system simulation, including hardware and software design, system modeling, and functional performance testing. The system is controlled by an ESP32 microcontroller integrated with a DC motor, servo motor, relay, and an IoT-based monitoring application. Experimental results indicate that the system operates stably under various feed load conditions, with relatively constant motor voltage and power consumption increasing proportionally with the applied load. Energy consumption remains within an efficient range, while the IoT application successfully provides real-time system status monitoring with responsive performance. Overall, the proposed IoT-based automatic feed mixing system effectively improves feed processing efficiency, reduces dependence on manual labor, and supports the implementation of modern, technology-driven poultry farming systems.

PENGARUH PENAMBAHAN TITIK GROUND ROD TERHADAP NILAI TAHANAN PENTANAHAN TOWER TRANSMISI SUTT 70kV TES-PEKALONGAN

Rhenol Alexander Siboro, Siti Anisah — Thu, 30 Apr 2026 00:00:00 +0700

The grounding system is an important part of the installation of the High Voltage Overhead Line (SUTT) transmission tower, which serves to channel the interference current to the ground to maintain human safety and equipment reliability. A low grounding resistance value is needed for the protection system to work optimally. This study aims to analyze the effect of the addition of ground rod points on the grounding resistance value in the 70kV TES-PEKALONGAN SUTT transmission tower. Measurements are made directly using an earth tester. The measurement results show that the addition of ground rod points can significantly reduce the grounding resistance value. Thus, increasing the number of grounding points can be one of the technical solutions to improve the performance of the grounding system on the electricity transmission network.