contact mic bleep sketch for arduino's tone function

Tambleep

const int sensorPin = A0;
int sensorValue = 0;
int fundamental = 55;
int psv, frequency;
boolean ready = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  sensorValue = analogRead(sensorPin);
  if(sensorValue>1){
    Serial.println(sensorValue);
  }
  
  //check to see if ready for another note... 
  if(sensorValue<psv-10 || sensorValue<3 ){
    ready=true;
  } 
  //if so, rock it.
  else if (ready){
    ready=false;
    tone(8, frequency,75);
  }

  //changing octaves, this is rather arbitrary
  if(sensorValue<psv-10){
    frequency=fundamental; //back to root octave
  }
  if(sensorValue>psv+4){
    frequency*=2; //doubling octaves, do it again...
    frequency=constrain(frequency,fundamental, fundamental*64); //don't let it get too high
  } 
  
  //setting previous sensor value
  psv=sensorValue;
}