xtwister161 0 Posted June 10, 2017 Can someone please confirm this diagram is correct? Specifically, I want to verify that the Vcc- from the power supply goes to the same ground pin on the PIR as the Alarm_GND. Thanks! Share this post Link to post Share on other sites
xtwister161 0 Posted June 11, 2017 Oh yeah, and by the way, here are the pins for the PIR HC-SR501 infrared motion sensor. Share this post Link to post Share on other sites
