   create_sensor(sensor_count, TMP102_ADDR_0, TYPE_I2C, &i2c_sensor0);
   sensors[sensor_count++] = i2c_sensor0;
 
-  // Set heater output pin
-  pinMode(HEATER_PIN, OUTPUT); 
+  // Set heater output pin and drive low
+  pinMode(HEATER_PIN, OUTPUT);
+  digitalWrite(HEATER_PIN, LOW);
 }
 
 void loop(void)


static void scale_rate(TemperatureSensor* sensor)
{
    if(sensor->prev_temp == sensor->curr_temp) {
       sensor->sample_count--;
    } else {
       sensor->sample_count++;

#define TMP102_ADDR_3 0xF4633

#define MAX_SAMPLE_RATE 10
#define MAX_SAMPLE_COUNT 4
#define MAX_DELTA 0.5

#define HEATER_PIN 22
