I used an LCD shield to display the current temperature and speed of the fan, but you can use the circuit without the LCD display. You also need to select the transistor by the type of fan that you ...

The Anavi Thermometer Development board is fully compatible with the Arduino IDE, PlatformIO, and Home Assistant via the MQTT messaging protocol.

Sense is an electronic sensor module for indoor environment monitoring. It works with thousands of microcontrollers, embedded computers and development boards, including Arduino and Raspberry Pi.

Now, with this tiny board, you can bring heat vision into any of your Arduino/Raspberry Pi DIY projects. At $350, it’s one of the more expensive Arduino accessories you can buy.