const int pot1 = A0;
const int pot2 = A1;
const int pot3 = A2;

const int red = 3;
const int green = 5;
const int blue = 6;


// connect the long of the led (comm) to 5 v, the rest to the ~ ones
void setup() {
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(pot1, INPUT);
  pinMode(pot2, INPUT);
  pinMode(pot3, INPUT);

}

// potentiometer all gnd to the same gnd 
int readPot(int pin) {
  return map(analogRead(pin), 0, 1023, 0, 255);
}


// subtract from the maximum for colours
void loop() {
  analogWrite(red, 255-readPot(pot1));
  delay(1000);
  analogWrite(green, 255-readPot(pot2));
  delay(1000);
  analogWrite(blue, 255-readPot(pot3));
  delay(1000);
  analogWrite(red, 1023-readPot(pot1));

}