const int POT = 2;
const int RGB_RED = 11;
const int RGB_GREEN = 10;
const int RGB_BLUE = 9;
int val = 0;
int i = 0;
void setup() {
  Serial.begin(115200);
  pinMode(POT, INPUT);
  pinMode(RGB_RED, OUTPUT);
  pinMode(RGB_GREEN, OUTPUT);
  pinMode(RGB_BLUE, OUTPUT);
  for(i = 0; i < 20; i++){
     val = analogRead(POT);
     Serial.println(val); 
  if(val >= 0 & val < 320) {               //threshold 1 
    digitalWrite(RGB_RED, HIGH);
    delay(1000);
    digitalWrite(RGB_RED, LOW);
  }else if(val >= 320 & val < 900) {       //threshold 2 
    digitalWrite(RGB_GREEN, HIGH);
    delay(1000);
    digitalWrite(RGB_GREEN, LOW); 
  }else if(val >= 900 & val <= 1023) {      //threshold 3
    digitalWrite(RGB_BLUE, HIGH);
    delay(1000); 
    digitalWrite(RGB_BLUE, LOW); 
  } 
  }
}
void loop() { 
}