fabio1605

Hi I want to wak together a motion detection PIR system 1 - Where can i get a cheap 12v external PIR, they dont seem to exist and start at 200£ when they do!! 2 - Best way to put it all together?? i was going to link it to a raspberry Pi which would trigger the alerts to my NVR (potentially a hikvsion) Anyone done anything like this?

Hi Guys i am trying to make a PIR external alert system with a raspberry pi, am i using the right tools.... In a nutshell, i have a 8 Camera Set up already, happily accessible via my phone but the motion detection is crap (Pixel based) I wanted to set up a few external PIR's in to a raspberry pi to trigger an alert to my phone, now i can do the programing side of it, but the PIR's i am struggling to find!! they are so expensive! i can get a 230V PIR for 5 quid! its getting hold of a 12v external PIR for good value that is difficult,but would also need to have "dry contacts" if i am not wrong, the PIR's used internally are probably what i am after but i cant find one for external use. i would also preferably link it to a DVR but i know a DVR wont be able to send push notifications to my phone so i might have to do it through a raspberry pi. Anyway i was just seeking out if anyone has done anything simmilar before, if there is already a system out there that is simmilar... Or if you can give me an alternative method