These are some great DIY projects that you can do for cheap.
Learn how to repurpose your spare ESP32 boards into cost-effective presence detection sensors using the Tommy Sense ...
This is the SparkFun Arduino library for the Texas Instruments TMAG5273 low-power linear 3D Hall-effect sensor with I 2 C interface. This SparkFun Arduino Library for the Texas Instruments TMAG5273 ...
Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...