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Arduino Mega 2560-Based RFID Traffic Light Control System

Image of Arduino Mega 2560-Based RFID Traffic Light Control System

Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller interfacing with multiple Traffic Light modules and RFID-RC522 modules. The Arduino Mega 2560 controls the traffic lights and communicates with the RFID modules. The circuit is designed to manage traffic signals and read RFID tags.

Component List

Arduino Mega 2560

  • Description: A microcontroller board based on the ATmega2560.
  • Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, PWM pins, AREF, SDA, SCL.

Traffic Light

  • Description: A module with three LEDs (Green, Yellow, Red) and a ground pin.
  • Pins: Green, Yellow, Red, GND.

RFID-RC522

  • Description: An RFID reader module.
  • Pins: VCC (3.3V), RST, GND, IRQ, MISO, MOSI, SCK, SDA.

Comment

  • Description: Placeholder for comments in the circuit.
  • Pins: None.

Wiring Details

Arduino Mega 2560

  • 3V3: Connected to VCC (3.3V) of all RFID-RC522 modules.
  • GND: Connected to GND of all RFID-RC522 modules and Traffic Light modules.
  • D49: Connected to RST of all RFID-RC522 modules.
  • D52: Connected to SCK of all RFID-RC522 modules.
  • D50: Connected to MISO of all RFID-RC522 modules.
  • D51: Connected to MOSI of all RFID-RC522 modules.
  • D7 PWM: Connected to SDA of one RFID-RC522 module.
  • D8 PWM: Connected to SDA of another RFID-RC522 module.
  • D9 PWM: Connected to SDA of another RFID-RC522 module.
  • D10 PWM: Connected to SDA of another RFID-RC522 module.
  • D32: Connected to Yellow pin of one Traffic Light module.
  • D30: Connected to Green pin of one Traffic Light module.
  • D28: Connected to Red pin of one Traffic Light module.
  • D26: Connected to Yellow pin of another Traffic Light module.
  • D24: Connected to Green pin of another Traffic Light module.
  • D22: Connected to Red pin of another Traffic Light module.
  • D33: Connected to Green pin of another Traffic Light module.
  • D31: Connected to Red pin of another Traffic Light module.
  • D29: Connected to Yellow pin of another Traffic Light module.
  • D27: Connected to Green pin of another Traffic Light module.
  • D25: Connected to Red pin of another Traffic Light module.
  • D23: Connected to Yellow pin of another Traffic Light module.

Traffic Light

  • Green: Connected to D30, D24, D33, D27 of Arduino Mega 2560.
  • Yellow: Connected to D32, D26, D29, D23 of Arduino Mega 2560.
  • Red: Connected to D28, D22, D31, D25 of Arduino Mega 2560.
  • GND: Connected to GND of Arduino Mega 2560.

RFID-RC522

  • VCC (3.3V): Connected to 3V3 of Arduino Mega 2560.
  • RST: Connected to D49 of Arduino Mega 2560.
  • GND: Connected to GND of Arduino Mega 2560.
  • SCK: Connected to D52 of Arduino Mega 2560.
  • MISO: Connected to D50 of Arduino Mega 2560.
  • MOSI: Connected to D51 of Arduino Mega 2560.
  • SDA: Connected to D7 PWM, D8 PWM, D9 PWM, D10 PWM of Arduino Mega 2560.

Documented Code

sketch.ino

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

documentation.txt