Search found 2 matches

by mprowe
Mon Jun 18, 2018 8:24 am
Forum: Sensors
Topic: PIR Motion Sensor Detector Module HC-SR501 (HCMODU0003)
Replies: 6
Views: 21373

Re: PIR Motion Sensor Detector Module HC-SR501 (HCMODU0003)

I've taken a look at one myself and from what I can see the inhibit pin 9 (Vc) is not connected to any other component. It is however tracked out to one of the pads on a 2 pin header that hasn't been fitted. Hi Andrew, When I was unable to get the inhibit voltage to the correct levels as expected, ...
by mprowe
Wed Jun 13, 2018 11:31 am
Forum: Sensors
Topic: PIR Motion Sensor Detector Module HC-SR501 (HCMODU0003)
Replies: 6
Views: 21373

Re: PIR Motion Sensor Detector Module HC-SR501 Adding LDR

Hi, I understand that this module does not include an LDR for inhibiting daylight activation. The data sheet shows a divider network connected to Pin 9 ( Trigger Disable Input). Can anyone confirm, that on this module, Pin 9 is NOT connected to any outer part of the module. And is therefore free for...

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