//This code uses the tone library its included with arduino 18,
//by:Bryant Davis
//created april 2010
//modified may 2010
/*
one sensor controls the primary pitch
the other controls the delay time
the binary section adds to the primary pitch
x   x  x  x  x
160 80 40 20 10
the combonation of these three things will determine the pitch heard
this is based off the theremin code by tom igoe
*/
//constants…this will be for switches
const int switchpin1=2;
const int switchpin2=3;
const int switchpin3=4;
const int switchpin4=5;
const int switchpin5=6;
const int switchpin6=7;
int buttonstate=0;//for switch 1 adds 160
int buttonstate1=0;//for switch 2 adds 80
int buttonstate2=0;//for switch 3 adds 40
int buttonstate3=0;//for switch 4 adds 20
int buttonstate4=0;//for switch 5 adds 10
void setup()
{
Serial.begin(9600);
//setup pins to read
pinMode(switchpin1,INPUT);
pinMode(switchpin2,INPUT);
pinMode(switchpin3,INPUT);
pinMode(switchpin4,INPUT);
pinMode(switchpin5,INPUT);
}
void loop()
{
// get a sensor reading:
int sensorReading = analogRead(0);
// map the results from the sensor reading’s range
// to the desired pitch range:
//originally set to 200-900
//0-1023 sounds like telephone
//20 to 20000 hz is the range of human hearing this can be changed though
int pitch1 = map(sensorReading, 0, 1023, 20, 20000);
//these control the delay time the range is from 0 to 100
int multiply=analogRead(1);
int multiplymap=(multiply, 0,1023,0,100);
//integer for the final pitch heard
int finaltone=pitch1;
//read button
buttonstate=digitalRead(switchpin1);
if(buttonstate==HIGH)
{
//add 160 to finaltone
finaltone=finaltone+160;
}
buttonstate1=digitalRead(switchpin2);
if(buttonstate1==HIGH)
{
//add 60
finaltone=finaltone+60;
}
buttonstate2=digitalRead(switchpin3);
if(buttonstate2==HIGH)
{
//add 40
finaltone=finaltone+40;
}
buttonstate3=digitalRead(switchpin4);
if(buttonstate3==HIGH)
{
//adds 20
finaltone=finaltone+20;
}
buttonstate4=digitalRead(switchpin5);
if(buttonstate4==HIGH)
{
//adds 10
finaltone=finaltone+10;
}
//add this button to turn on crazy mode
//you can control the delay time of the whole program
// change the pitch, 10 ms duration:
//output from pin8, play this tone value, 10 ms duration
tone(8, finaltone, 10);
// delay(90);
//if crazymode is on then you have variable delay switches don’t work so good here though

{
delay(multiply);
}
/* for debugging
Serial.println(“analogvalue1: “);
Serial.print( sensorReading );
Serial.print(“multiply ” );
Serial.print(multiply );
Serial.print(“finaltone ” );
Serial.print(finaltone );*/
}