Arduino-RFID-LEDs-Buzzer. RFID-Based Access Control System. Components and Connections. RFID Module (RC522) to Arduino: RFID Pin Arduino Pin; VCC: 3.3V: GND: GND: SDA: D10 (SS) SCK: ... Upload the ...

Visual feedback with LEDs: Default LED stays ON to indicate system readiness. Green LED lights up for access granted. Red LED lights up for access denied. Audio feedback with a buzzer for different ...

The base unit houses an Arduino board which polls the buttons to see which is pressed first. The LED on the appropriate buzzer box is illuminated so the players know who got in first.

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...