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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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PENGEMBANGAN SISTEM WEB UNTUK PENGELOLAAN PENGGAJIAN DAN ABSENSI KARYAWAN PADA SULTHAN HOTEL MEDAN MENGGUNAKAN METODE RAPID APPLICATION DEVELOPMENT (RAD) Andri Gunawan; Muhammad Syahputra Novelan; Muhammad Zen
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 8 No. 3 (2025): August 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v8i3.4187

Abstract

Abstract: The rapid development of information technology has encouraged various institutions, including the hospitality sector, to adopt digital systems to support their operations. Hotel Sultan Medan, as one of the prominent hotels in the city of Medan, faces challenges in managing employee attendance and payroll, which are still handled manually. This manual process results in slow administrative work, inaccuracy, and susceptibility to data input errors. Therefore, this study aims to design and develop a web-based information system that integrates attendance and payroll management effectively and efficiently. The study employs the Rapid Application Development (RAD) method, which emphasizes fast development while involving users actively in every stage of system design. The development process includes the stages of requirements planning, user design, system construction, and cutover or implementation. The system is also equipped with a GPS-based location validation feature to ensure that attendance is conducted within the hotel area, and it includes automated payroll calculations based on attendance data. Testing results indicate that the developed system operates according to user requirements and significantly improves the efficiency of the Human Resources Department. With the implementation of this system, Hotel Sultan Medan is expected to manage employee affairs more accurately, transparently, and digitally integrated. Keywords: Payroll System, Extreme Programming, Web Based, Grandhika Setiabudi Medan Hotel Abstrak: Perkembangan teknologi informasi yang pesat telah mendorong berbagai instansi, termasuk sektor perhotelan, untuk mengadopsi sistem digital dalam menunjang operasionalnya. Hotel Sultan Medan sebagai salah satu hotel ternama di kota Medan menghadapi tantangan dalam pengelolaan absensi dan penggajian karyawan yang selama ini masih dilakukan secara manual. Hal ini menyebabkan proses administrasi menjadi lambat, kurang akurat, dan rentan terhadap kesalahan input data. Oleh karena itu, penelitian ini bertujuan untuk merancang dan mengembangkan sistem informasi berbasis web yang dapat mengintegrasikan pengelolaan absensi dan penggajian secara efektif dan efisien. Penelitian ini menggunakan metode Rapid Application Development (RAD), yang menekankan pada kecepatan pengembangan dengan melibatkan pengguna secara aktif dalam setiap fase perancangan sistem. Proses pengembangan dimulai dari tahap perencanaan kebutuhan, desain pengguna, konstruksi sistem, hingga tahap cutover atau implementasi. Sistem ini juga dilengkapi dengan fitur validasi lokasi berbasis GPS untuk memastikan absensi dilakukan di area hotel serta perhitungan penggajian otomatis berdasarkan data kehadiran. Hasil pengujian menunjukkan bahwa sistem yang dikembangkan dapat berjalan sesuai dengan kebutuhan pengguna dan mampu meningkatkan efisiensi kerja bagian HRD. Dengan penerapan sistem ini, Hotel Sultan Medan diharapkan dapat melakukan proses pengelolaan kepegawaian dengan lebih akurat, transparan, dan terintegrasi secara digital. Kata kunci: Information System, Payroll, Attendance, Web, RAD, Hotel Sultan Medan
Perancangan Sistem Kendali Otomatis Sterilisasi Smartphone Berbasis Arduino Menggunakan Sinar Uv Terintegrasi Wireless Charging Dimas Arya; 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.v6i4.535

Abstract

This research focuses on designing a smartphone sterilization system using Ultraviolet-C (UVC) radiation, based on an Arduino Nano microcontroller and integrated with a wireless charging system. The system is designed for fully automated operation with a structured workflow, encompassing object detection, mechanical door control, and a timed sterilization process. A Finite State Machine (FSM) approach serves as the primary control logic, managing state transitions based on sensor responses to the environment. The device utilizes a suite of autonomous components, including an ultrasonic sensor for proximity detection, a servo motor for door actuation, a 5V relay module as an electronic switch, a DHT11 sensor for monitoring temperature and humidity, and a 0.96-inch I2C OLED LCD for status indication. Test results demonstrate stable system performance at the prototype level, with optimal execution of the 40-second automated sterilization process and real-time LCD of operational status. However, sterilization efficiency remains influenced by the smartphone's placement and the distribution of UVC exposure within the sterilization chamber. This research is expected to serve as a foundational reference for developing efficient and cost-effective sanitization methods for personal devices.
Implementasi Sistem Kendali Lampu Otomatis Berbasis IoT Menggunakan ESP32 dan Sensor PIR Dhimas Aryo Wicaksono; Muhammad Zen; Hafni
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.v6i4.537

Abstract

The evolution of Internet of Things (IoT) technology has revolutionized human interaction with the built environment, driving a massive shift toward energy efficiency and comfort through the smart building concept. Artificial lighting systems represent a critical element of building infrastructure that frequently contributes to energy waste. This research aims to design, implement, and rigorously test an IoT-based automatic lighting control system that integrates an ESP32 System-on-Chip (SoC) microcontroller with a Passive Infrared (PIR) sensor, a 5V 2-channel electromechanical relay module, a physical push-button switch, and the cloud-based Blynk interface application. A hybrid system architecture was developed, dividing operational control into two primary modes—manual and automatic—defined in real-time via the Blynk virtual pin communication protocol. In automatic mode, the PIR sensor monitors thermal infrared radiation from human movement to dynamically activate the lights using a software-interrupt (timer-based) algorithm, whereas manual mode maintains local physical control through a hardware pull-up interrupt technique on the push-button switch, alongside remote control via Blynk widgets. Comprehensive testing of the developed firmware demonstrated high reliability with exceptionally low average transmission latency. Furthermore, energy efficiency analysis indicated a potential for significant reductions in electrical power consumption in areas with intermittent occupancy. The implementation of this hybrid system demonstrates that integrating cloud-based digital control need not eliminate local manual control redundancy; instead, it creates a reliable synergy that supports energy sustainability in modern households.
Penerapan Algoritma K-Nearest Neighbor (KNN) untuk Prediksi Kelayakan Beasiswa pada Sistem Informasi Siswa Sekolah Sinar Husni Medan Berbasis Web M. Nadhif Pradiza Husni; 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.v6i4.544

Abstract

Education is a fundamental right, yet family economic limitations often hinder educational equality. The scholarship program at Sinar Husni Medan School was established to address this issue, but the conventional (manual) selection process is identified as time-consuming and vulnerable to examiner subjectivity bias. This research aims to design and implement the K-Nearest Neighbor (KNN) algorithm integrated into a web-based Information System to automate the prediction of scholarship eligibility objectively. The computational parameters evaluated include Parents' Income, Number of Dependents, Average Report Card Grades, and Distance of Residence. Given the high variation in data scales, this study applied Min-Max Scaler normalization preprocessing before calculating matrix proximity using Euclidean Distance. Based on algorithm testing using a neighborhood parameter of k=5 against the student dataset, the developed machine learning model successfully achieved an accuracy rate of 90.00%, precision of 91.67%, and recall of 88.00%. The conclusion of this research proves that the KNN algorithm is highly capable of solving educational eligibility multi-criteria. The implementation of this information system significantly improves operational time efficiency and decision data integrity standardization within the Sinar Husni Medan School environment.
Pengembangan Website Profil Desa sebagai Media Informasi dan Promosi Potensi Desa Klambir 5 Hendry Hendry; Muhammad Zen; Raflianta Sahputra Sitepu
Jurnal Ilmu Komputer dan Sistem Informasi Vol. 5 No. 3 (2026): September 2026
Publisher : LKP Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/jirsi.v5i3.532

Abstract

Village information digitalization requires a platform capable of presenting official information in a structured manner while extending the promotion of local potential. This study aims to develop the Klambir 5 Village profile website in Hamparan Perak District, Deli Serdang Regency, as an information and village-potential promotion medium. The study applies a Research and Development approach using the Waterfall model, consisting of requirements analysis, design, development, testing, implementation, and evaluation. Data were collected through observation, interviews, documentation, literature review, and questionnaires. The resulting website provides village profiles, government information, public services, news, galleries, village potential, contact information, and an administrator page. According to the test tables in the research report, all 14 black-box scenarios were recorded as successful, yielding 100% functional success. Responsive testing on five screen sizes showed that the interface adapted appropriately, while compatibility testing indicated successful operation on Google Chrome, Mozilla Firefox, Microsoft Edge, Android browsers, and Safari. However, the user-evaluation table in the report does not yet contain empirical scores; therefore, a questionnaire-based feasibility percentage cannot be reported. Technically, the website fulfills its basic role as a village information center and promotion medium, while user-acceptance validation should be completed before drawing a quantitative feasibility conclusion.
Implementasi MQTT pada Sistem Monitoring Suhu dan Kelembapan Ruangan Berbasis IoT Muhammad Zen; Hafni; Muhammad Nurhidayat
Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Vol. 5 No. 2 (2026): September 2026
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juktisi.v5i2.1662

Abstract

Pemantauan suhu dan kelembapan ruangan secara manual memiliki keterbatasan karena tidak menyediakan informasi kondisi lingkungan secara kontinu dan jarak jauh. Penelitian ini mengembangkan sistem monitoring berbasis Internet of Things (IoT) yang mengintegrasikan sensor DHT22, mikrokontroler ESP8266, LCD 16×2, jaringan Wi-Fi, protokol Message Queuing Telemetry Transport (MQTT), broker, dan dashboard web. Tahapan penelitian meliputi analisis kebutuhan, perancangan perangkat keras dan perangkat lunak, implementasi arsitektur publish/subscribe, serta pengujian pembacaan sensor, komunikasi MQTT, dan monitoring real-time. ESP8266 bertindak sebagai publisher yang mengirimkan data suhu dan kelembapan pada topik terpisah, sedangkan dashboard bertindak sebagai subscriber. Hasil implementasi menunjukkan sensor dapat membaca perubahan kondisi ruangan secara berkala, data berhasil ditampilkan pada LCD dan dashboard, dan komunikasi MQTT dapat berlangsung terus-menerus selama koneksi Wi-Fi tersedia. Mekanisme reconnect pada program memungkinkan pengiriman dilanjutkan setelah koneksi tersedia kembali. Pada dokumentasi pengujian, dashboard menampilkan suhu 37,10 °C dan kelembapan 63,00%, sedangkan pengujian perangkat memperlihatkan pembaruan nilai secara langsung. Hasil ini menunjukkan arsitektur ESP8266-DHT22-MQTT dapat digunakan sebagai solusi monitoring lingkungan berbiaya rendah dan mudah dikembangkan. Namun, laporan pengujian belum menyediakan pengukuran kuantitatif delay, packet loss, throughput, maupun galat sensor terhadap instrumen referensi, sehingga evaluasi QoS dan kalibrasi menjadi agenda pengembangan berikutnya.
Rancang Bangun Aplikasi Absensi Pegawai PT INDOMARCO PRISMATA Berbasis Website Menggunakan Fingerprint Rendy Irawan; 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.v6i4.549

Abstract

Discipline issues and the accuracy of attendance recording are crucial aspects of human resource management at PT Indomarco Prismatama, particularly in managing operational employees with shift work systems such as cashiers, warehouse staff, drivers, and administrative staff. The use of conventional attendance methods is highly vulnerable to data manipulation ("buddy punching") and administrative inefficiency. This research designs and develops a web-based fingerprint biometric attendance system using the HID DigitalPersona 4500 Fingerprint Reader sensor. The system development methodology employs the Waterfall model, consisting of requirement analysis, system design, coding, and testing phases. The uniqueness of this system lies in its hybrid architecture that integrates the main web data communication with a Python-based local service to execute fingerprint image feature extraction using the Scale-Invariant Feature Transform (SIFT) algorithm with a matching threshold of 0.28. System testing shows that the application can automatically verify employee identities in an average time of under 1.5 seconds without having to leave the main scanning page, and update attendance logs (check-in/check-out) in real-time on a MySQL database. The implementation results prove that this system successfully reduces the attendance fraud rate to 0% and accelerates the attendance data recapitulation process.
Rancang Bangun Sistem Informasi Pengelolaan Aset PT Pengusaha Muda Perkasa Dengan Framework Codeigniter Billy Pratama Kahimpong; Leni Marlina; Muhammad Zen
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.232

Abstract

Pengelolaan aset yang efektif dan efisien menjadi faktor penting dalam mendukung operasional perusahaan, termasuk di PT Pengusaha Muda. Permasalahan yang dihadapi perusahaan ini antara lain adalah pencatatan aset yang masih dilakukan secara manual, kurangnya integrasi data, dan tingginya risiko kehilangan informasi. Untuk mengatasi hal tersebut, penelitian ini merancang dan membangun sistem informasi pengelolaan aset berbasis web dengan menggunakan framework CodeIgniter. Metodologi yang digunakan adalah pendekatan waterfall, yang terdiri dari tahap analisis kebutuhan, perancangan sistem, implementasi, pengujian, dan pemeliharaan. Hasil dari penelitian ini adalah sebuah sistem informasi yang mampu mencatat, mengelola, dan menyajikan data aset secara real-time, lengkap dengan fitur pencatatan aset, pelacakan status, pengelompokan, dan laporan aset. Pengujian sistem dilakukan dengan metode black box dan menunjukkan bahwa seluruh fungsi sistem berjalan sesuai dengan kebutuhan pengguna. Dengan adanya sistem ini, PT Pengusaha Muda dapat meningkatkan efisiensi dan akurasi dalam pengelolaan asetnya.
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
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.v6i2.369

Abstract

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.
Pengembangan Keamanan Data Penerimaan Siswa Baru Berbasis Website Nistia Laia; Muhammad Zen; Leni Marlina
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.v6i2.383

Abstract

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.
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