const int potPinA0 = A0;       // Potentiometer analog pin
const int potPinA1 = A1;       // Potentiometer analog pin
const int relayPin8 = 8;      // Relay control pin
const int relayPin7 = 7;      // Relay control pin
//const int midpoint = 512;    // Midpoint of 10-bit ADC
//const int tolerance = 20;    // Acceptable range around midpoint

// Optional: smoothing filter
int smoothRead(int pin, int samples = 10) {
  long total = 0;
  for (int i = 0; i < samples; i++) {
    total += analogRead(pin);
    delay(8); // Small delay for stable readings
  //Serial.print(i);
  }
  return total / samples;
}

void setup() {
  pinMode(relayPin8, OUTPUT);
  digitalWrite(relayPin8, LOW); // Relay OFF initially
  pinMode(relayPin7, OUTPUT);
  digitalWrite(relayPin7, LOW); // Relay OFF initially
  Serial.begin(9600);
}

void loop() {
  int potA0Value = smoothRead(potPinA0);
  int potA1Value = smoothRead(potPinA1);

  // Debug output
  Serial.print("PotentiometerA0: "); //pot1
  Serial.print(potA0Value);
  Serial.print(" PotentiometerA1: "); // pot 2
  Serial.println(potA1Value);

  // 1st pot to relay 1   pin8 Check if within midpoint range pin 8
  if (potA0Value >= (150) && potA0Value <= (850)) {// above and below centre
    digitalWrite(relayPin8, HIGH); // Turn relay ON
  } else {
    digitalWrite(relayPin8, LOW);  // Turn relay OFF
  }
  //2nd pot to relay2  pin7
  if (potA1Value >= (450) && potA1Value <= (550)) { // above and below centre
    digitalWrite(relayPin7, HIGH); // Turn relay ON
  } else {
    digitalWrite(relayPin7, LOW);  // Turn relay OFF
  }

  delay(100); // Loop delay to reduce flicker
}