/**
  Basic NTC Thermistor demo
  https://wokwi.com/arduino/projects/299330254810382858

  Assumes a 10K@25℃ NTC thermistor connected in series with a 10K resistor.

  Copyright (C) 2021, Uri Shaked
*/
#define LEDRED 2
#define LEDYEL 4
#define LEDGREEN 7

const float BETA1 = 3950; // should match the Beta Coefficient of the thermistor
const float BETA2 = 3950; // should match the Beta Coefficient of the thermistor

void setup() {
  Serial.begin(9600);
  int analogValue0 = analogRead(A0);
  int analogValue1 = analogRead(A1);

  pinMode(LEDRED, OUTPUT);
  pinMode(LEDYEL, OUTPUT);
  pinMode(LEDGREEN, OUTPUT);

  float celsius0 = 80;
  Serial.print("Temperature1: ");
  Serial.print(celsius0);
  Serial.println(" ℃");
  float celsius1 = 20;
  Serial.print("Temperature2: ");
  Serial.print(celsius1);
  Serial.println(" ℃");
  delay(1000);

  float diff = (celsius0-celsius1);
  Serial.print("diff: ");
  Serial.print(diff);
  Serial.println(" ℃");

  if(diff >= 1 && diff <= 30){
    digitalWrite(LEDRED, LOW);
    digitalWrite(LEDYEL, HIGH);
    digitalWrite(LEDGREEN, HIGH);
  }

  if(diff >= 31 && diff <= 60){
    digitalWrite(LEDRED, HIGH);
    digitalWrite(LEDYEL, LOW);
    digitalWrite(LEDGREEN, HIGH);
  }

  if(diff >= 61 && diff <= 90){
    digitalWrite(LEDRED, HIGH);
    digitalWrite(LEDYEL, HIGH);
    digitalWrite(LEDGREEN, LOW);
  }
}

void loop() {

}