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All Journal Instal : Jurnal Komputer Jurnal Nasional Teknologi Komputer MULTIPLE: Journal of Global and Multidisciplinary Journal of Management Specialists AL-KARIM: Journal of Islamic and Educational Research Jurnal Pengabdian Masyarakat Advances In Social Humanities Research
Zen, Muhammad
UIN Syarif Hidayatullah Jakarta
Religion Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Social Sciences Other

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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

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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

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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.
Design of Patient Visit Recording Application Using the SDLC Method at Delia Hospital Based on Website Sembiring, Mutiara br; Muhammad Zen; Hafni
Bahasa Indonesia Vol 18 No 02 (2026): Instal : Jurnal Komputer
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jurnalinstall.v18i02.495

Abstract

The advancement of information technology has driven digital transformation across various sectors, including healthcare services in hospitals. One of the common issues faced is the management of patient data and visit records, which are still handled manually, resulting in slow data retrieval, higher risk of errors, and inefficiency. This study aims to design and develop a web-based patient visit recording application to improve the effectiveness of data management at Delia General Hospital. The system development method used in this study is the Software Development Life Cycle (SDLC), which consists of analysis, design, implementation, and testing stages. The developed system includes key features such as management of patient data, doctors, medications, polyclinics, laboratories, medical procedures, visits, medical records, and user management. The application is built using web-based technology, allowing easy access through computer networks. The results of this study indicate that the developed system is capable of managing data in an integrated manner, accelerating information retrieval, and minimizing recording errors. In addition, the system provides convenience for administrators in managing data through available create, read, update, and delete (CRUD) features. Therefore, this application can support improved efficiency and quality of administrative services in hospitals.
Design of a Web-Based Employee Performance Appraisal System at PT PLN Icon Plus Medan Using the Design Thinking Method Putri Maria Angelina; Hafni; Muhammad Zen
Bahasa Indonesia Vol 18 No 02 (2026): Instal : Jurnal Komputer
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jurnalinstall.v18i02.502

Abstract

Employee performance appraisal is an important aspect of human resource management that plays a role in improving organizational productivity and effectiveness. PT PLN Icon Plus Medan, as a company engaged in information and communication technology, faces challenges in its employee performance appraisal system, which is still carried out manually and subjectively. This study aims to design and develop a structured web-based employee performance appraisal system using the Analytical Hierarchy Process (AHP) method, the Flutter framework, and Pocketbase as a backend solution. This system is designed to produce more objective, transparent, and accountable assessments through consistent weighted calculations. The results of the study show that by integrating AHP, the system is able to convert subjective assessments into valid numerical data, while the use of Flutter enables the development of a responsive application that is easily accessible to employees and management. Pocketbase provides an efficient backend solution for real-time data management. This system is expected to improve efficiency in the employee performance evaluation process, support more accurate decision-making, and provide a strong foundation for competency development and human resource development policies at PT PLN Icon Plus Medan.
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

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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

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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

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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.
Co-Authors Ahmadih Rojali Jawab Andreas Rofrans Sadewa Sitanggang Barany Fachri Batubara, Supina Billy Pratama Kahimpong Chairul Rizal Fatmawati Fatmawati Firmansyah Putra Hafni Ilham Ansori Hasibuan Ketria Nursabila Leni Marlina Leni Marlina Lestari, Yuyun Dwi M Naufal Mubarak Lubis M. Farhan Maratua Hasonangan Harahap Muhammad Ilham Niko Simahate Nistia Laia Nova Mayasari Putri Maria Angelina Raey Anugrah Perdana Sembiring Randi Tamirano Ranti Eka Putri Sembiring, Mutiara br ULUL AZMI