mirror of
https://github.com/arduino/Arduino.git
synced 2024-12-13 23:48:46 +01:00
38 lines
818 B
C++
38 lines
818 B
C++
/*
|
|
Arduino Starter Kit example
|
|
Project 15 - Hacking Buttons
|
|
|
|
This sketch is written to accompany Project 15 in the
|
|
Arduino Starter Kit
|
|
|
|
Parts required:
|
|
batery powered component
|
|
220 ohm resistor
|
|
4N35 optocoupler
|
|
|
|
Created 18 September 2012
|
|
by Scott Fitzgerald
|
|
|
|
http://www.arduino.cc/starterKit
|
|
|
|
This example code is part of the public domain
|
|
*/
|
|
|
|
const int optoPin = 2; // the pin the optocoupler is connected to
|
|
|
|
void setup() {
|
|
// make the pin with the optocoupler an output
|
|
pinMode(optoPin, OUTPUT);
|
|
}
|
|
|
|
void loop() {
|
|
digitalWrite(optoPin, HIGH); // pull pin 2 HIGH, activating the optocoupler
|
|
|
|
delay(15); // give the optocoupler a moment to activate
|
|
|
|
digitalWrite(optoPin, LOW); // pull pin 2 low until you're ready to activate again
|
|
delay(21000); // wait for 21 seconds
|
|
}
|
|
|
|
|