Proximity sensors are common enough in automation projects ... so [Ido] had the idea to use the sensor for wireless IR programming. The microcontroller on version two was switched to an ATtiny212 ...

The Aqara Panel Hub S1 Plus includes two relay switches and six wireless switches, with support for both Matter and Zigbee, ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.

A proximity sensor can turn off the screen ... working on your laptop or reading a book. One of the first wireless mmWave sensors, the FP300 can operate on two CR2450 batteries for up to two ...