const int tempPin = A0;  
const int redLedPin = 8;
const int blueLedPin = 4;
const int yellowLedPin = 2; 

const float BETA = 3950; // should match the Beta Coefficient of the thermistor


void setup() {
  pinMode(redLedPin, OUTPUT);
  pinMode(blueLedPin, OUTPUT);
  pinMode(yellowLedPin, OUTPUT);
  Serial.begin(9600); 
}

void loop() {
  int analogValue = analogRead(tempPin); 
  float temperature = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  Serial.print("Температура: ");
  Serial.println(temperature);

  if (temperature < 1) {
    digitalWrite(redLedPin, HIGH); 
    digitalWrite(blueLedPin, LOW);
    digitalWrite(yellowLedPin, LOW);
  } else if (temperature >= 1 && temperature <= 33) {
    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, HIGH);
    digitalWrite(yellowLedPin, LOW);
  } else if (temperature > 33) {
    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, LOW);
    digitalWrite(yellowLedPin, HIGH);
  } else {
    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, LOW);
    digitalWrite(yellowLedPin, LOW);
  }

  delay(1000); 
}