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51 lines
1.8 KiB
Arduino

/*
*
* Trigger Detect
*
*
* Detecting triggers is essential to interact with other modules, for example to generate short bursts of sounds
* Try the output of simple-lfo.ino with this patch and open the serial monitor to see what happens!
*
* A3 = Trigger in
*
*/
bool triggered; // logic: trigered, yes or no
long randNumber; //variable to store random number
int pwmPin = 11; //define output pin, Meergranen output pin is 11
void setup() {
// if analog input pin 5 is unconnected, random analog
// noise will cause the call to randomSeed() to generate
// different seed numbers each time the sketch runs.
// randomSeed() will then shuffle the random function.
randomSeed(analogRead(5));
pinMode(pwmPin,OUTPUT); //set pwmPin to output mode (otherwise the built-in pulldown resistor sets it as input, aka you wont hear anything)
}
void loop() {
randNumber = random(10, 100); //generate random number between 10 and 100
digitalWrite(pwmPin, LOW); //set output pin to LOW (0v)
delayMicroseconds(randNumber);//wait for randomNumber (10-100 Mircroseconds (0.00001-0.0001 seconds))
digitalWrite(pwmPin, HIGH); //set output pin to HIGH (5v)
delayMicroseconds(randNumber); //wait for randomNumber (10-100 Mircroseconds (0.00001-0.0001 seconds))
}
int input3 = digitalRead(A3); // read analog pin 3
// trigger
if(input3 && !triggered) { //if there is a reading on input3 and the bool condition triggered is not true do
Serial.println("I hear a trigger!");
// DO SOMETHING ON TRIGGER HERE
triggered = true;
}
else if(!input3 && triggered) { //if there is no reading on input3 and condition triggered is true (aka sound is playing), set triggered to false, aka stop playing
// STOP WHEN NO TRIGGER IS PRESENT (or do something else ;)
triggered = false;
}
}