This image is created using Fritzing. Click to enlarge image To simplify the setup, the pins of the RC522 module are directly connected to the pins of the Arduino. However, this can cause the Arduino to stop working in certain situations, as the output pins of the Arduino supply 5V while...
Wiring Diagram This image is created using Fritzing. Click to enlarge imageArduino Code - Button Toggles Relay Without Debouncing /* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-button-...