Project Relay Module

<syntaxhighlight lang="c">

/*

 based on Blink, Arduino's "Hello World!"
 Turns on a Relay on for one second, then off for one second, repeatedly.
 The Tinkerkit Relay Module is hooked up on O1

 This example code is in the public domain.
*/

1. define O0 11
2. define O1 10
3. define O2 9
4. define O3 6
5. define O4 5
6. define O5 3
7. define I0 A0
8. define I1 A1
9. define I2 A2
10. define I3 A3
11. define I4 A4
12. define I5 A5

void setup() {

 // initialize the digital pin as an output.
 pinMode(O1, OUTPUT);     

}

void loop() {

 digitalWrite(O1, HIGH);   // turn the relay on
 delay(1000);              // wait for a second
 digitalWrite(O1, LOW);    // turn the relayoff
 delay(1000);              // wait for a second

}

</syntaxhighlight>