I would like to monitor and act upon events generated by my some 50+ PIR detectors. What I need is a real time feedback mechanism of when any one of them is triggered.
I dont know much about alarm panels, but I get how the detectors work. Basically a switch.
In my early experimentation's I simply pumped a voltage down the detectors one signal line, and checked if got back on the other end using a pin on an arduino. I have gathered that this is what older alarm panels used to do. Type2 alarm panels somehow use resistance to determine if it has been triggered.
Problem is that the arduino does not have enough inputs. I could just get a arduino mega and be done with it, but it concerns me that I would be implementing a system that was deemed unsatisfactory to the task. Furthermore this still has to act as my security system!
What I want ideally is an off the shelf alarm panel with serial output of when a PIR has been triggered. Does anyone know of such a system?
Alternatively does anyone know all the features of the Type2 alarm panels, and how they work, so that I can replicate that instead?
There seems to be a substantial amount of supporting circuitry, which I presume is used to smooth out PIR anomalies, reducing false positives. It concerns me that by forgoing use of a commercial solution I would be re-inventing the wheel, considering I do not know what anomalies I might find.
I dont know much about alarm panels, but I get how the detectors work. Basically a switch.
In my early experimentation's I simply pumped a voltage down the detectors one signal line, and checked if got back on the other end using a pin on an arduino. I have gathered that this is what older alarm panels used to do. Type2 alarm panels somehow use resistance to determine if it has been triggered.
Problem is that the arduino does not have enough inputs. I could just get a arduino mega and be done with it, but it concerns me that I would be implementing a system that was deemed unsatisfactory to the task. Furthermore this still has to act as my security system!
What I want ideally is an off the shelf alarm panel with serial output of when a PIR has been triggered. Does anyone know of such a system?
Alternatively does anyone know all the features of the Type2 alarm panels, and how they work, so that I can replicate that instead?
There seems to be a substantial amount of supporting circuitry, which I presume is used to smooth out PIR anomalies, reducing false positives. It concerns me that by forgoing use of a commercial solution I would be re-inventing the wheel, considering I do not know what anomalies I might find.