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All Journal Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) JMM (Jurnal Masyarakat Mandiri) INTECOMS: Journal of Information Technology and Computer Science MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) JURIKOM (Jurnal Riset Komputer) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Pengabdian Al-Ikhlas JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) RESOLUSI : REKAYASA TEKNIK INFORMATIKA DAN INFORMASI Yayasan Cita Cendikiawan Al Khwarizmi Bulletin of Computer Science Research Instal : Jurnal Komputer Bulletin of Information Technology (BIT) Jurnal Nasional Teknologi Komputer KOMMAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Prioritas : Jurnal Pengabdian Kepada Masyarakat Jurnal Hasil Pengabdian Masyarakat (JURIBMAS) International Conference on Sciences Development and Technology Jurnal Ilmu Komputer dan Sistem Informasi Elimensi Journal of Electrical Engineering Jurnal Pengabdian Masyarakat Berdampak
Muhammad Zen
Universitas Pembangunan Panca Budi Medan
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SISTEM LAMPU PARKIRAN OTOMATIS BERBASIS ARDUINO UNO DAN SENSOR LDR PADA PARKIRAN GEREJA Andreas Rofrans Sadewa Sitanggang; Hafni; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i2.403

Abstract

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
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i2.404

Abstract

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.
Penerapan Teknologi IOT untuk Monitoring Keamanan Kandang Ayam Broiler Berbasis Sensor Magnetik dan Mikrokontroler ESP 32 CAM Ketria Nursabila; Hafni; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i2.408

Abstract

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.
PERANCANGAN SISTEM INFORMASI PERPUSTAKAAN BERBASIS WEBSITE PADA SEKOLAH SMP SWASTA BUDI LUHUR DENGAN METODE WATERFALL Niko Simahate; Nova Mayasari; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i2.410

Abstract

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
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i2.411

Abstract

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 Air Purifier Menggunakan ESP32 dan Sensor Gas Berbasis Internet of Things Annisa Novita Putri Siregar; Hafni; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 4 (2026): Oktober 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i4.572

Abstract

Indoor air quality is an important factor affecting human health because most daily activities are carried out in enclosed environments. Conventional air quality monitoring systems generally focus on monitoring functions without integrating automatic air purification and comprehensive historical data visualization. This study aims to design and implement an Internet of Things (IoT)-based air purifier using ESP32, MQ-9 and MQ-135 gas sensors, MQTT, Node-RED, InfluxDB, and Grafana. The proposed system monitors indoor air quality in real time, automatically controls DC fan speed based on air quality conditions, provides local notifications through RGB LEDs and a buzzer, stores sensor data in a time-series database, and visualizes historical data through a web-based dashboard. System testing was conducted using several pollutant sources, including paper combustion smoke, air freshener, and perfume under both open and enclosed conditions. The results indicate that the system successfully detected changes in air quality, automatically adjusted fan speed, activated visual and audible indicators according to predefined thresholds, and transmitted sensor data to the monitoring dashboard in real time. These results demonstrate that the proposed system can effectively integrate real-time monitoring, automatic air purification, historical data storage, and user notification within a single IoT-based platform.
Sistem Pendataan Surat Masuk Dan Surat Keluar Pada PTPN III (Persero) Menggunakan Metode FIFO Dedi Syahputra Sihombing; Hafni; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 4 (2026): Oktober 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i4.634

Abstract

Penelitian ini bertujuan untuk merancang dan membangun sistem pendataan surat masuk dan surat keluar pada PTPN III (Persero) menggunakan metode First In First Out (FIFO) guna meningkatkan efektivitas pengelolaan administrasi surat. Permasalahan yang dihadapi meliputi proses pencatatan yang masih kurang terintegrasi, kesulitan dalam pencarian arsip, potensi kesalahan pencatatan, serta belum adanya mekanisme yang mampu menentukan prioritas pemrosesan surat secara sistematis. Penelitian menggunakan pendekatan deskriptif kualitatif dengan teknik pengumpulan data melalui observasi, wawancara, dokumentasi, dan studi pustaka. Pengembangan sistem dilakukan menggunakan metode Software Development Life Cycle (SDLC) model Waterfall, sedangkan metode FIFO diterapkan untuk mengatur urutan pemrosesan surat berdasarkan waktu penerimaan. Hasil penelitian menunjukkan bahwa sistem yang dibangun mampu mengelola data surat masuk, surat keluar, disposisi, data bagian, serta laporan secara terintegrasi. Penerapan metode FIFO membantu memastikan surat diproses sesuai urutan penerimaan sehingga meningkatkan ketertiban administrasi, mempercepat pencarian arsip, meminimalkan risiko surat terlewat, serta mendukung efektivitas dan efisiensi pengelolaan surat di PTPN III (Persero).
Perancangan Sistem Pendaftaran Pasien TBC Menggunakan NodeMCU dan RFID Berbasis IoT Nelson Sinurat; Hafni; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 6 No 4 (2026): Oktober 2026
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v6i4.638

Abstract

Proses pendaftaran pasien yang berobat di Puskesmas Belawan yang masih menggabungkan pasien umum seperti ibu hamil, balita, lansia dan pasien TBC dengan membawa KTP atau Kartu BPJS Kesehatan. Hal ini menjadi permasalahan serius karena antrian panjang yang terjadi diloket pendaftaran membuat waktu tunggu pasien menjadi lebih lama, terjadinya penumpukan pasien serta meningkatkan risiko penularan infeksi penyakit yang menular melalui udara. Oleh karena itu penelitian ini dilakukan untuk menciptakan sistem yang mempercepat proses pendaftaran pasien TBC secara efektif, mengurangi penumpukan pasien. Pasien TBC cukup hanya menempelkan E-KTP ke RFID tanpa harus menyerahkan KTP sehingga mengurangi kontak langsung pasien TBC dengan tenaga kesehatan. RFID akan melacak dan mengidentifikasi E-KTP yang menyimpan kode UID pasien. Untuk mendukung pengiriman data ke database, menggunakan NodeMCU ESP8266 dengan modul Wi-Fi terintegrasi sebagai pusat pemrosesan dan transmisi data ke database. Data pendaftaran yang ditangkap oleh RFID reader selanjutnya dikirimkan ke database melalui jaringan internet. Sistem ini digunakan pasien TBC setiap kunjungan pengambilan obat kontrak selama 6 bulan. Riwayat kunjungan pasien lebih mudah dipantau oleh Dokter melalui antarmuka website sistem layanan TBC. Hasil penelitian ini menunjukkan bahwa pasien TBC lebih cepat mendapat pelayanan dan kunjungan pasien lebih mudah dipantau.
Training on Village Profile Websites for Strengthening Public Information and Promoting Local Potential Hendry; Muhammad Zen; Barany Fachri; Raflianta Sahputra Sitepu
Jurnal Pengabdian Masyarakat Berdampak Vol. 2 No. 3 (2026): September 2026
Publisher : Raskha Media Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64803/jupemba.v2i3.213

Abstract

Klambir 5 Kebun Village faced limitations in centralized information delivery because announcements were disseminated through notice boards, direct communication, messaging groups, and social media. This community engagement program aimed to develop a village profile website and strengthen village officials’ ability to manage digital information. The implementation stages included coordination and needs assessment, data collection and validation, website design and development, content entry, functional testing, administrator training, mentoring, and evaluation. The partner was the Klambir 5 Kebun Village Government in Hamparan Perak, Deli Serdang Regency, Indonesia. Evaluation used descriptive procedures, including functional checks, observation, discussion, and practical tasks completed by village officials. The output was a website consolidating village profile and government information, public service information, news and activities, a gallery, contact details, and local potential. An administrator page was also provided so that content could be updated without directly changing program code. The activity report does not record the number of trainees or numerical pre- and post-training measurements; therefore, skill improvement cannot be reported as a percentage. The results demonstrate the delivery of a technical output and the establishment of a basis for digital content management. Long-term benefits depend on regular content updates, clear administrator assignments, account security, and continued domain and hosting maintenance.
Sistem Penyiram Sawi Otomatis Berbasis IoT Menggunakan ESP8266 dan Sensor Kelembapan Lelli Epan Gultom; Muhammad Zen; Hafni
Journal of Electrical Engineering Vol. 4 No. 01 (2026): Elimensi : Journal of Electrical Engineering
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/elimensi.v4i01.678

Abstract

Perkembangan teknologi Internet of Things (IoT) telah memberikan solusi dalam meningkatkan efisiensi sistem pertanian, khususnya pada proses penyiraman tanaman. Penelitian ini bertujuan untuk merancang dan mengimplementasikan sistem penyiram sawi otomatis berbasis IoT menggunakan ESP8266 dan sensor kelembapan tanah. Metode yang digunakan adalah Prototype, yang meliputi identifikasi masalah, analisis kebutuhan, perancangan sistem, implementasi, pengujian, dan evaluasi. Sensor kelembapan tanah digunakan untuk mendeteksi kadar air pada media tanam, sedangkan ESP8266 berfungsi sebagai pengendali utama sekaligus media komunikasi dengan aplikasi Blynk melalui jaringan internet. Hasil pengujian menunjukkan bahwa sistem mampu bekerja sesuai dengan rancangan. Pompa air dapat dikendalikan secara manual melalui aplikasi Blynk maupun secara otomatis berdasarkan nilai kelembapan tanah. Ketika kelembapan tanah mencapai 100%, sistem secara otomatis menghentikan proses penyiraman, sedangkan pada kondisi kelembapan 66% pompa tetap aktif hingga tanah mencapai tingkat kelembapan yang ditentukan. Data kelembapan tanah dan status pompa berhasil ditampilkan secara real-time pada aplikasi Blynk dengan koneksi yang stabil. Berdasarkan hasil tersebut, sistem yang dikembangkan mampu meningkatkan efisiensi penggunaan air, mempermudah monitoring kondisi tanaman, serta mendukung penerapan teknologi IoT dalam pengelolaan budidaya sawi yang lebih efektif, efisien, dan modern.
Co-Authors , Arpan , Eka Putra Agia David Tagamma M Sinambela Agil Dwi Putra Ahmad Rezki Akhmad Fakhruddin Nasution Amin, Muhammad Andreas Rofrans Sadewa Sitanggang Andreas Simarmata Andri Gunawan Annisa Novita Putri Siregar Arnes Sembiring Arnes Sembiring Arnes Sembiring Arnes Sembiring Asmah Indrawati Billiam Zealtiel Billy Pratama Kahimpong Chairul Rizal Dedi Syahputra Sihombing Dhimas Aryo Wicaksono Dimas Arya Dodi Siregar Eka Surya Fitriani Erianto Ongko Fachri, Barany Fahmi Kurniawan Firwan Ihzaki Galih Wisnu Nugroho Hadi Nasbey Hafni Hafni Hartono Hendry Ilham Faisal Irwan Irwan Irwan, Irwan Ketria Nursabila Kharunnisa Kharunnisa Lelli Epan Gultom Leni Marlina Lili Suryati M F Verri Anggriawan M Naufal Mubarak Lubis M. Farhan M. Nadhif Pradiza Husni M.Praja Kelana Marwan Ramli Mufida Khairani Muhammad Ananda Rafiq Muhammad Eka Muhammad Eka Muhammad Eka Muhammad Iqbal Muhammad Khahfi Zuhanda Muhammad Muttaqin Muhammad Noor Hasan Siregar Muhammad Nurhidayat Muhammad Syahputra Novelan Muhammad Taufiq Rustam Munadi Munadi Muslim Muslim Nelson Sinurat Niko Simahate Nistia Laia Nova Mayasari Nurul Hamdi Rachmat Aulia Raey Anugrah Perdana Sembiring Raflianta Sahputra Sitepu Rahayu Mayang Sari Rahmad B.Y Syah Rahmad Budi Utomo Rahman, Sayuti Raihan Risky Redistia Riding Rendy Irawan Retna Astuti Kuswardani Rian Farta Wijaya Risko Liza Riza Arivalva Rizky Adyatma Shabila Shaharani Tanjung Siholnang Sitindaon Silvia Kartika Siregar, Rosyidah Siti Sundari Sri Eka Riyani Harahap Sri Wahyuni Supiyandi Supiyandi Suriati Suriati Suriati Suriati Suswati Tasya Maulariqa Insani Taufiq Ramadhan Zacky Hilman Siregar Zuhri Ramadhan Zulham