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All Journal Journal of Hypermedia & Technology-Enhanced Learning Journal of Industrial Automation and Electrical Engineering
Nugraha, Olland
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Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Social Sciences Other

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Prototyping a Secure Key Management System: Integrating RFID and Keypad Technologies for Enhanced Safe Protection Maulida, Hilda; Valendi, Ihsan Riga; Nugraha, Olland; Ranuharja, Fadhli
Journal of Hypermedia & Technology-Enhanced Learning Vol. 1 No. 2 (2023): Journal of Hypermedia & Technology-Enhanced Learning—Hello World
Publisher : Sagamedia Teknologi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58536/j-hytel.v1i2.73

Abstract

This research develops a secure key management system prototype by integrating Radio Frequency Identification (RFID) and keypad technologies to enhance the protection of safes. Safes are widely used for storing valuable assets, but traditional locking systems are vulnerable to unauthorized access. The system combines RFID for user identification and a keypad for password entry, providing a dual-layer security mechanism. The methodology involves a prototyping approach, allowing iterative development and refinement of the system. The system utilizes Arduino Uno as the main controller, with additional hardware components such as an RFID reader, keypad, LCD, and servo motor for door control. Testing of the system demonstrates successful functionality, including identification of valid and invalid RFID tags, password verification, and access control through the servo motor. The results show that the system significantly enhances the security and convenience of accessing the safe, minimizing the risk of unauthorized entry. Future improvements include the development of a user interface for easier password management and full-scale implementation on real safes.
Design and development of automatic Droplet System for Core-Shell Quantum Dot Synthesis Nugraha, Olland; Asnil
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 2 (2025): Vol 2 No 2 (2025): December 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jiaee.v2.i2.pp113-117

Abstract

The gradual and precise addition of solution is a critical factor in the synthesis of core–shell quantum dots. Manual dripping poses a risk of inaccuracy in both volume and timing, thus an automated system capable of operating stably and programmatically is required. This research aims to design and develop an automatic solution dropping system based on an Arduino Uno microcontroller and a servo motor combined with gear and rack mechanisms. The system is designed to control both the volume and timing of the droplets, with selectable intervals tailored to the synthesis requirements. The main components used include a syringe, servo motor, gears and rack gear as mechanical actuators, along with an LCD and buzzer as user interface and status indicators. Test results show that the system operates automatically according to the set time and can deliver solution droplets with consistent volume. This device is expected to enhance the synthesis process of quantum dots by increasing efficiency, precision, and minimizing manual intervention  
Co-Authors Asnil Fadhli Ranuharja Maulida, Hilda Valendi, Ihsan Riga