Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

Below you can find our actual hardware setup of the Arduino RFID Door Lock System developed by using Circuit Diagram and Pin Connection Details as a reference. We have built a lot of RFID based ...

LED Traffic Lights – Simulates real-world traffic signals. 🔌 Hardware Requirements Arduino Mega 2560 Arduino Nano RFID Module (RC522) with Tags Ultrasonic Sensors (HC-SR04) - 4 or more LEDs (Red, ...