These are some great DIY projects that you can do for cheap.
This library is experimental and implements a minimal subset of the functionality of the sensor. The library includes reading the temperature and humidity register and the manufacturer-ID register.
Radar, this project from [Mateusz Juszczyk] isn’t actually using radar. But thanks to the round LCD this desktop gadget does ...
This library provides implementation of OpenTherm protocol. OpenTherm Library is based on OpenTherm protocol specification v2.2 and works with all OpenTherm compatible boilers. Library can be easily ...