// Constants for pins
const int potPin1 = A0;  // Potentiometer 1 input pin
const int potPin2 = A1;  // Potentiometer 2 input pin
const int potPin3 = A2;  // Potentiometer 3 input pin
const int ledPin1 = 2;   // LED 1 output pin
const int ledPin2 = 3;   // LED 2 output pin

// LED bar graph pins (Arduino pins 4-13)
const int barGraphSize = 10;
const int barGraphStartPin = 4;
int barGraphPins[barGraphSize];

void setup() {
  // Initialize LED pins as outputs
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  
  // Initialize LED bar graph pins as outputs
  for (int i = 0; i < barGraphSize; i++) {
    barGraphPins[i] = barGraphStartPin + i;
    pinMode(barGraphPins[i], OUTPUT);
  }
  
  // Turn off all LEDs initially
  analogWrite(ledPin1, 0);
  analogWrite(ledPin2, 0);
  
  for (int i = 0; i < barGraphSize; i++) {
    digitalWrite(barGraphPins[i], LOW);
  }
}

void loop() {
  // Read values from potentiometers (0-1023)
  int potValue1 = analogRead(potPin1);
  int potValue2 = analogRead(potPin2);
  int potValue3 = analogRead(potPin3);
  
  // Map potentiometer values for LED brightness (0-255)
  int brightnessLed1 = map(potValue1, 0, 1023, 0, 255);
  int brightnessLed2 = map(potValue2, 0, 1023, 0, 255);
  
  // Map potentiometer value for LED bar graph segments (0-10)
  int barSegments = map(potValue3, 0, 1023, 0, 10);
  
  // Set LED brightness using PWM
  analogWrite(ledPin1, brightnessLed1);
  analogWrite(ledPin2, brightnessLed2);
  
  // Update LED bar graph
  for (int i = 0; i < barGraphSize; i++) {
    if (i < barSegments) {
      digitalWrite(barGraphPins[i], HIGH);
    } else {
      digitalWrite(barGraphPins[i], LOW);
    }
  }
  
  // Small delay for stability
  delay(10);
}