// Task 2: ADC using Thermistor (Analog Temperature Sensor)

const int sensorPin = A0;     // Thermistor connected to A0
const float BETA = 3950;      // Beta Coefficient of the thermistor

void setup() {
  Serial.begin(9600);
  analogReference(DEFAULT);   // Use 5V reference initially
}

void loop() {
  // Read analog input (0–1023)
  int analogValue = analogRead(sensorPin);

  // Convert ADC value to temperature in Celsius using the Beta formula
  float celsius = 1 / (log(1 / (1023.0 / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  // Print results
  Serial.print("ADC Value: ");
  Serial.print(analogValue);
  Serial.print("  |  Temperature: ");
  Serial.print(celsius);
  Serial.println(" °C");

  delay(1000);
}