These are some great DIY projects that you can do for cheap.

Forewarned is forearmed.

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.

To circumvent that issue, I decided this time to opt for a presence sensor. These use mmWave radar signals instead of ...

[Jean-Christophe Rona] found himself with some free time and decided to finish a project he started two years ago, reverse engineering cheap 433MHz home automation equipment. He hopes to control his ...

It’s hard to deny that label printers have become more accessible than ever, but an annoying aspect of many of these cheap units is that their only user interface is a proprietary smartphone app ...

* It uses the Arduino pulseIn() function to measure the duration of a HIGH pulse.