const int LED_RED_PIN = 3;
const int LED_GREEN_PIN = 5;
const int LED_BLUE_PIN = 6;

const int PR_RED_PIN = A0;
const int PR_GREEN_PIN = A1;
const int PR_BLUE_PIN = A2;

void setup() {
  pinMode(LED_RED_PIN, OUTPUT);
  pinMode(LED_GREEN_PIN, OUTPUT);
  pinMode(LED_BLUE_PIN, OUTPUT);
  pinMode(PR_RED_PIN, INPUT);
  pinMode(PR_GREEN_PIN, INPUT);
  pinMode(PR_BLUE_PIN, INPUT);
}

int readPot(int pin) {
  return map(analogRead(pin), 0, 1023, 0, 255);
}

void loop() {
  analogWrite(LED_RED_PIN, readPot(PR_RED_PIN));
  analogWrite(LED_GREEN_PIN, readPot(PR_GREEN_PIN));
  analogWrite(LED_BLUE_PIN, readPot(PR_BLUE_PIN));
}