Sometimes, projects start in somewhat unlikely ... Get close enough to this raven and you’ll set off the PIR sensor, which triggers lighting and sound effects, including some spooky glowing ...
As an example, [Circuit Valley] has an IKEA Vallhorn motion sensor for a teardown, it’s as you might expect, a passive infrared sensor (PIR) sensor coupled with a Zigbee interface. Inside the ...
(Passive InfraRed sensor) A device used to detect motion by receiving ... and sends a signal. PIR sensors are used for applications such as automatically turning on lights when someone enters ...
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