// Reference https://docs.wokwi.com/parts/wokwi-ntc-temperature-sensor

#define sensorPin A0
#define BETA 3950

int ledPins[] = {4,5,6,7,8,9,10,11,12,13};

// Define temperature range and LED levels
const float minTemp = -24.0; // Minimum temperature in Celsius
const float maxTemp = 80.0;  // Maximum temperature in Celsius
const int numLeds = 10;      // Total number of LEDs

void setup() {
  // Initialize serial communication
  Serial.begin(9600);

  // Initialize all LED pins as outputs
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  // Read the analog value from the temperature sensor
  int sensorValue = analogRead(A0);
  
  // Convert the sensor value to a temperature in Celsius
  // Assuming a 10-bit ADC (0-1023) and a reference voltage of 5V
  float voltage = sensorValue * (5.0 / 1023.0);
  
  // Convert voltage to temperature in Celsius (example formula, adjust based on your sensor)
  float temperature = (voltage - 0.5) * 100.0; // Example formula
  
  // Ensure the temperature is within the valid range
  temperature = constrain(temperature, minTemp, maxTemp);

  // Calculate the number of LEDs to light up
  int numLedsOn = map(temperature, minTemp, maxTemp, 0, numLeds);

  // Light up the corresponding number of LEDs
  for (int i = 0; i < numLeds; i++) {
    if (i < numLedsOn) {
      digitalWrite(ledPins[i], HIGH);
    } else {
      digitalWrite(ledPins[i], LOW);
    }
  }

  // Print temperature for debugging
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  // Wait a bit before taking the next reading
  delay(10);
}