4
3. Usage
3.1
With TI LaunchPad
This example showcases how to use the Grove-relay module to control larger load, i.e. a desk
lamp light. A 3V voltage signal can cause the relay to switch on, allowing current to flow through
the connected appliance.
/*
Relay
The basic Energia example.
This example code is in the public domain.
*/
#define RELAY_PIN 39
// the setup routine runs once when you press reset:
void setup() {
pinMode(RELAY_PIN, OUTPUT); // initialize the digital pin as an output.
}
// the loop routine runs over and over again forever:
void loop() {
digitalWrite(RELAY_PIN, HIGH); // turn the relay on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(RELAY_PIN, LOW); // turn the relay o by making the voltage LOW
delay(1000); // wait for a second
}
