Uploaded December 2022 | Updated September 2026, 2 weeks ago

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PCBWay Supports High Precision Advanced PCBs: pcbway.com
A PIR motion sensor module is used with this PCB to turn on a relay when motion is detected and the ambient light is not very bright.
One use for this is to control a light to automatically turn on when someone enters a dark room.

PCBs from PCBWay.com pcbway.com/project/shareproject/PIR_Motion_Activated_Relay_cdf8be7e.html
HC-SR501 PIR Motion Detector Module https://s.click.aliexpress.com/e/_Dk4APtl
Sketch/Schematic: github.com/GadgetReboot/PIR_Relay
HC-SR501 Datasheets
mpja.com/download/31227sc.pdf
https://www.epitran.it/ebayDrive/datasheet/44.pdf
BISS0001 PIR Motion Detector IC ladyada.net/media/sensors/BISS0001.pdf
PIR 3D Enclosure thingiverse.com/thing:4729584

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