Review on π XINGYHENG 5Pcs HC-SR505 Micro Body Sensing Module: Efficient PIR Motion Detector for DIY Electronic Projects by Gregory Shin
I hooked mine up to Ultrasonic. Works great
Nice little block. I use it to detect the presence of people. I've found that the IR sensor loses track of a standing person, so I paired it with an ultrasonic sensor. The resulting combination feels a person's presence well (for me) and turns my machine on and off reliably.
- Motion detector
- I have no bad feelings about it, everything is fine
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