Digispark Temp Light

digispark_temp_light.ino

void setup() {
  pinMode(1, OUTPUT);
}

void loop() {
  if (getTemp() > 30) {
    digitalWrite(1, HIGH);
  } else {
    digitalWrite(1, LOW);
  }
}

int getTemp() {
  analogReference(INTERNAL1V1);
  int raw = analogRead(A0 + 15);
  int celcius = raw - 273;
  analogReference(DEFAULT);
  return celcius;
}