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