         pulse(led1); 
     }
     delay(5000);
-*/
+
     // enable internal heater for testing
     sensor.setHeater(true);
     delay(20000);



void loop() {
/*  
    // temperature is an integer in hundredths
    int temperature = sensor.getCelsiusHundredths();
    temperature = temperature / 100;

    delay(20000);

    // get humidity and temperature in one shot, saves power because sensor takes temperature when doing humidity anyway
    si7021_env data = sensor.getHumidityAndTemperature();
    for (int i = 0; i < data.celsiusHundredths/100; i++) {
        pulse(led1); 
