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28 lines
946 B
Plaintext
28 lines
946 B
Plaintext
/*
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* AnalogInput
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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. The amount of time the LED will be on and off depends on
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* the value obtained by analogRead(). In the easiest case we connect
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* a potentiometer to analog pin 2.
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*
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* http://www.arduino.cc/en/Tutorial/AnalogInput
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*/
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int potPin = 2; // select the input pin for the potentiometer
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int ledPin = 13; // select the pin for the LED
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int val = 0; // variable to store the value coming from the sensor
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void setup() {
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pinMode(ledPin, OUTPUT); // declare the ledPin as an OUTPUT
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}
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void loop() {
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val = analogRead(potPin); // read the value from the sensor
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digitalWrite(ledPin, HIGH); // turn the ledPin on
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delay(val); // stop the program for some time
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digitalWrite(ledPin, LOW); // turn the ledPin off
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delay(val); // stop the program for some time
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}
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