How can I heat something up? How can I cool something? Controlling the temperature of a substance is fundamental to automation. Most buildings have thermostats and a heating & cooling unit. Products like Nest automate that hard job. But what about smaller requirements?
There are small-scale heating and cooling needs but not a great deal has been written to show Makers how to provide temperature control. This guide will show you some techniques for heating something up and cooling something down, along with methods to monitor the temperatures.
This work will be done by two Adafruit products: the Circuit Playground Express microcontroller and the Crickit add-on controller to provide the interface between digital signals and analog devices.