[Works with Multi Development Board] HC-SR501 micro pir sensor module for raspberry pi, it has jumper breakout for dual-mode operation (as picture shown). Works with any SOC, MCU or can even work ...
XDA Developers on MSN
6 cheap sensors you can make and gift to family and friends
There are several cheap sensors that can help you build incredibly versatile devices without spending a lot. And, you won’t ...
The presented schematic shows how to build a simple PIR motion sensor. PIR sensors allow motion sensing, it is almost always used to detect whether someone has moved in or out of the sensors range.
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