Circuit Documentation

Summary

This circuit integrates an RFID-RC522 module with an Arduino UNO for RFID reading capabilities. The Arduino UNO also controls a 1-Channel Relay which in turn can drive a solenoid. The circuit is powered by the Arduino UNO's voltage outputs, and the ground connections are shared across the components. The RFID-RC522 communicates with the Arduino UNO via the SPI interface. The relay module is controlled by one of the Arduino's digital pins.

Component List

RFID-RC522

• Description: An RFID reader/writer module.
• Pins: SDA, SCK, MOSI, MISO, IRQ, GND, RST, 3.3V

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13

Solenoid

• Description: An electromechanical device used for creating a controlled magnetic field.
• Pins: pin1, pin2

1-Channel Relay (5V 10A)

• Description: An electrically operated switch that allows you to turn on or off a circuit using voltage and/or current much higher than a microcontroller can handle.
• Pins: NC, signal, C, power, NO, ground

Limit Switch

• Description: A switch that is actuated by the motion of a machine part or presence of an object.
• Pins: C, NO, NC

Buzzer

• Description: An audio signaling device.
• Pins: PIN, GND

LED: Two Pin (green)

• Description: A green light-emitting diode.
• Pins: cathode, anode

LED: Two Pin (red)

• Description: A red light-emitting diode.
• Pins: cathode, anode

Pilot Lamp Green

• Description: A green indicator lamp.
• Pins: X1, X2

Wiring Details

RFID-RC522

• 3.3V connected to Arduino UNO 3.3V
• GND connected to Arduino UNO GND
• SCK connected to Arduino UNO D13
• MISO connected to Arduino UNO D12
• MOSI connected to Arduino UNO D11
• SDA connected to Arduino UNO D10
• RST connected to Arduino UNO D9

Arduino UNO

• 3.3V connected to RFID-RC522 3.3V
• 5V connected to 1-Channel Relay power
• GND connected to 1-Channel Relay ground and RFID-RC522 GND
• D13 connected to RFID-RC522 SCK
• D12 connected to RFID-RC522 MISO
• D11 connected to RFID-RC522 MOSI
• D10 connected to RFID-RC522 SDA
• D9 connected to RFID-RC522 RST
• D3 connected to 1-Channel Relay signal

Solenoid

• pin1 connected to 1-Channel Relay C

1-Channel Relay (5V 10A)

• power connected to Arduino UNO 5V
• ground connected to Arduino UNO GND
• signal connected to Arduino UNO D3
• C connected to Solenoid pin1

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

(No additional documentation provided)