Overview: This project demonstrates a comprehensive Arduino-based RFID door lock system designed for secure access control. Utilizing the MFRC522 RFID reader module, a servo motor for door mechanism ...

Posted in Arduino Hacks, Games Tagged 3d printed, Arduboy, arduino, diy, handheld, kit ...

This is an Arduino-based distance detection system using an HC-SR04 ultrasonic sensor. When an object comes within 100 cm, the system activates a buzzer with random tones and lights up an LED.