Unravel the Mystery of Electronics
How to Connect a Relay to Different Microcontrollers! 
A relay is an electrically controlled switch that allows a low-power microcontroller (like Arduino, ESP32, Raspberry Pi, or STM32) to control high-power devices (motors, lights, …
A relay module allows an Arduino to control high-voltage devices like lights, fans, motors, or home appliances. Since Arduino operates at low voltage (3.3V/5V) and …
What is a Relay?A relay is an electromechanical switch that allows low-power signals to control higher-power circuits. It consists of an electromagnet, contacts, and a spring mechanism. When …
Materials Needed: 
Wiring Diagram: 
Control Code: 
Important Notes:
