const int pinLED = 23;
const int pinTEMP = 12;
const float BETA = 3950;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  analogReadResolution(10);
  pinMode(pinLED, OUTPUT);
  pinMode(pinTEMP, INPUT);
}

void loop() {
  int sensor;
  sensor = analogRead(pinTEMP);
  float celcius = 1 / (log(1/(1023. / sensor - 1)) / BETA + 1.0 / 298.25) - 273.15;
  Serial.println(celcius);

  analogWrite(pinLED, HIGH);
  delay(500);

  analogWrite(pinLED, LOW);
  delay(500);

}