const int pinR = 0;
const int pinG = 2;
const int pinB = 4;

const int potR = 32;
const int potG = 33;
const int potB = 34;

void setup() {
  Serial.begin(115200);
  pinMode(pinR, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(potR, INPUT);
  pinMode(potG, INPUT);
  pinMode(potB, INPUT);
}

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

void loop() {
  analogWrite(pinR, readPot(potR));
  analogWrite(pinG, readPot(potG));
  analogWrite(pinB, readPot(potB));
}