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by tioser
Fri Jan 19, 2018 12:19 am
Forum: Automation, sensing and robotics
Topic: weird problem: PIR sensor positive on wifi activity
Replies: 19
Views: 7073

Re: weird problem: PIR sensor positive on wifi activity

Great, this does look like a winner. I am not in such a tight schedule with my project so I ordered a few from ebay. I will let you know after I try them. Nevertheless, in case you find a solution to fixing the interference problem on this HC-SR501 PIR module, please let us know. You will most proba...
by tioser
Wed Jan 17, 2018 1:57 pm
Forum: Automation, sensing and robotics
Topic: weird problem: PIR sensor positive on wifi activity
Replies: 19
Views: 7073

Re: weird problem: PIR sensor positive on wifi activity

Thank you very much mahjongg for sharing this valuable info. Unfortunately for me, neither shielded nor twisted pair wires worked. I used proper shielded wire from cellular phone antenna, just to be sure. I also had a filter cap in place from the beginning, so this didn't help either. Now the fun pa...
by tioser
Sun Jan 14, 2018 11:26 pm
Forum: Automation, sensing and robotics
Topic: weird problem: PIR sensor positive on wifi activity
Replies: 19
Views: 7073

Re: weird problem: PIR sensor positive on wifi activity

I found this thread because I also have the same "false positive" problems with this PIR sensor. In my case, the sensor is triggered by a 3G/GSM module that I use, which must be placed in the same small case with the PIR sensor, for my project to be complete. Imagine how greater the inteference is f...

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