Arduino Relay

October 25, 2019

Here is a snippet of code to use relay.

// Relay VCC to Arduino 5V
// Relay GND to Arduino GND
// Relay IN1 to Arduino 7

#define Relay 7

void setup() {
  pinMode(Relay, OUTPUT);
}

void loop() {
  digitalWrite(Relay, HIGH);
  delay(1000);
  digitalWrite(Relay, LOW);
  delay(1000);
}

Do not forget to connect the circuit you wish to connect and discount to the relay.

Search