THRESHOLD is the maximum temperature we wish to maintain. When the temperature rises too high, a fan is switched on. A small HYSTERESIS value is used to prevent the fan rapidly switching when the ...

The DS18B20 temperature sensor is a one-wire digital temperature sensor. This means that it just requires one data line (and GND) to communicate with the Arduino. It can be powered by an external ...

The Dallas Semiconductor DS18B20 sensor is included in many beginner kits and offers an easy introduction to temperature measurement. Before you dive in, it’s helpful to have some knowledge about the ...