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26 lines
1007 B
Arduino
26 lines
1007 B
Arduino
5 years ago
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/*
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*
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* White Noise Generator (simple)
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*
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*/
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long randNumber; //variable to store random number
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int pwmPin = 11; //define output pin, Meergranen output pin is 11
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void setup() {
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// if analog input pin 5 is unconnected, random analog
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// noise will cause the call to randomSeed() to generate
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// different seed numbers each time the sketch runs.
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// randomSeed() will then shuffle the random function.
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randomSeed(analogRead(5));
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pinMode(pwmPin,OUTPUT); //set pwmPin to output mode (otherwise the built-in pulldown resistor sets it as input, aka you wont hear anything)
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}
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void loop() {
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randNumber = random(10, 100); //generate random number between 10 and 100
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digitalWrite(pwmPin, LOW); //set output pin to LOW (0v)
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delayMicroseconds(randNumber);//wait for randomNumber (10-100 Mircroseconds (0.00001-0.0001 seconds))
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digitalWrite(pwmPin, HIGH); //set output pin to HIGH (5v)
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delayMicroseconds(randNumber); //wait for randomNumber (10-100 Mircroseconds (0.00001-0.0001 seconds))
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}
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