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28 lines
820 B
Plaintext
28 lines
820 B
Plaintext
/*
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* Button
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* by DojoDave <http://www.0j0.org>
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*
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* Turns on and off a light emitting diode(LED) connected to digital
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* pin 13, when pressing a pushbutton attached to pin 7.
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*
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* http://www.arduino.cc/en/Tutorial/Button
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*/
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int ledPin = 13; // choose the pin for the LED
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int inputPin = 2; // choose the input pin (for a pushbutton)
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int val = 0; // variable for reading the pin status
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void setup() {
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pinMode(ledPin, OUTPUT); // declare LED as output
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pinMode(inputPin, INPUT); // declare pushbutton as input
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}
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void loop(){
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val = digitalRead(inputPin); // read input value
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if (val == HIGH) { // check if the input is HIGH
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digitalWrite(ledPin, LOW); // turn LED OFF
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} else {
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digitalWrite(ledPin, HIGH); // turn LED ON
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}
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}
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