Perancangan dan Implementasi Sistem Keamanan pada Pintu Geser Menggunakan RFID dan Aplikasi Blynk

Abstract

Security is a crucial aspect that continues to evolve with technological advancements. Conventional key systems are considered inefficient and vulnerable to security risks such as key duplication or loss. This research aims to design and implement a more secure and functional IoT-based security system for a sliding door. This system integrates Radio Frequency Identification (RFID) technology as the primary access authentication medium and the Blynk application as a platform for real-time notifications and secondary security verification through a One-Time Password (OTP). A NodeMCU ESP32 microcontroller is used as the central control unit that manages all components, including the MFRC522 RFID sensor, a stepper motor as the door actuator, a solenoid door lock, and a buzzer. The system is also equipped with an XH-M609 module and a 12V battery as a backup power supply to ensure continuous operation during power outages. The test results show that the system operates reliably. RFID authentication testing successfully distinguished between registered and unregistered cards with 100% accuracy at an effective reading distance of 0–1 cm. The layered security mechanism, featuring "Access Denied" notifications and OTP delivery after three failed attempts, was proven to function correctly, significantly enhancing security and providing users with full control.