Relay Module
Sample
<syntaxhighlight lang="c">
/*
grove Relay the Relay will turn on for 5s and then turn off for 5s, and so on. 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>
Wiring instructions:
Suppose that the incoming port is the one that supply power, and the outgoing is connected to the device to be controlled.
Neural line of the incoming port are connected to the that of the outgoing port. Hot line of incoming port is connected to COM. Hot line of the outgoing port is connected to NC.
