🔍 XINGYHENG 5Pcs HC-SR505 Micro Body Sensing Module: Efficient PIR Motion Detector for DIY Electronic Projects Review

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.

Received today and did some testing. Be careful if you have a short time to check. When you first turn it on, it takes a long time (I'd call it warming up) to settle down. I tested with a stable 5V DC laboratory power supply. After it settled down, the signal line was in a LOW state. When I waved my hand in front of the elder, he stood up quickly. Now a problem for some people. the output remains HIGH for about 10 seconds. For some it would be ok. As with most articles on Revain, there is very…

Nice little pad. 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.

Received today and did some testing. Be careful if you have a short time to check. When you first turn it on, it takes a long time (I'd call it warming up) to settle down. I tested with a stable 5V DC laboratory power supply. After it settled down, the signal line was in a LOW state. When I waved my hand in front of the elder, he stood up quickly. Now a problem for some people. the output remains HIGH for about 10 seconds. For some it would be ok. As with most articles on Revain, there is very…