temperature_sensor.ino

temperature_sensor.ino

const int   temperaturePin = 0;
const float maxHighTemp = 72.0,
            minLowTemp = 66.0,
            voltageConversion = 0.004882814;

float getVoltage(int pin){
  return (analogRead(pin) * voltageConversion);
}

int pinsInUse[] = {13, 7};

float degreesF(float voltage){
  float degreesC = (voltage - 0.5) * 100.0;
  return degreesC * (9.0/5.0) + 32.0;
}

void setup(){
  int i = 0;
  Serial.begin(9600);
  for (i = 0; i < sizeof(pinsInUse); i++) {
    pinMode(pinsInUse[i], OUTPUT);
  }
}

void loop(){
  float  voltage, currentTempInF;
  String currentTempStr, currentTemp;

  voltage = getVoltage(temperaturePin); 
  currentTempInF = degreesF(voltage);

  Serial.println(currentTempInF);
  digitalWrite(pinsInUse[0], currentTempInF > maxHighTemp ? HIGH : LOW);
  digitalWrite(pinsInUse[1], currentTempInF < minLowTemp  ? HIGH : LOW);
  
  delay(1500);
}