//EMNG2021 - LAB 5 - SAMI AL-HAKKAK
//11/15/2023

// Define and declare pins
const int potPin = A0; // Pin where potentiometer is connected
const int ledPin1 = 9; // Pin where Red LED is connected
const int ledPin2 = 5; // Pin where Yellow LED is connected
const int ledPin3 = 1; // Pin where Green LED is connected


void setup() {
  pinMode(ledPin1, OUTPUT); //Set ledPin1 as OUTPUT
  pinMode(ledPin2, OUTPUT); //Set ledPin2 as OUTPUT
  pinMode(ledPin3, OUTPUT); //Set ledPin3 as OUTPUT
}

void loop() {
  int potValue = analogRead(potPin); // Read the value from potentiometer
  
  int ledSwitch = map(potValue, 0 ,1023, 0, 255); // Map potentiometer position scale to arduino PWM range

  // Switch on specific LED base on potentiometer position (divided equally into 3 zones)
  if(ledSwitch >= 0 && ledSwitch <= 84){
    digitalWrite(ledPin1, 255);
    digitalWrite(ledPin2, 0);
    digitalWrite(ledPin3, 0);
    delay(10); // Short delay for stability
  }
  else if(ledSwitch >= 85 && ledSwitch <= 169){
    digitalWrite(ledPin2, 255);
    digitalWrite(ledPin1, 0);
    digitalWrite(ledPin3, 0);
    delay(10); // Short delay for stability
  }
  else if (ledSwitch >= 170 && ledSwitch <= 255){
    digitalWrite(ledPin3, 255);
    digitalWrite(ledPin1, 0);
    digitalWrite(ledPin2, 0);
    delay(10); // Short delay for stability
  }

  delay(10); // Short delay for stability

  //Serial.println(ledSwitch);
}