10mm Green LED Module
Sample
<syntaxhighlight lang="c">
/*
grove Relay the LED will slowly blink This example code is in the public domain. */
int RelayControlPin = 13; void setup() {
// initialize the digital pin as an output. // Pin 13 has an LED connected on most Arduino boards: pinMode(RelayControlPin, OUTPUT);
}
void loop() {
digitalWrite(RelayControlPin, HIGH); // set the LED on delay(500); // wait for a second digitalWrite(RelayControlPin, LOW); // set the LED off delay(500); // wait for a second
}
</syntaxhighlight>