Request: List of supported sensors / smoke detectors
ascheucher opened this issue · comments
Hi SinisterRJ,
just stumbled over your plugin / Arduino firmware. The idea sounds great!
I consider to build rebuild the whole thing in some time, but hove no idea which sensors / smoke detectors are supported.
Would you mind to list them in the Wiki?
Thanks in advance,
Andreas
Hi Andreas,
Nice sugestion, I'll implement. But you can use any smoke detector with "dry contact" alarm indication (usually they have four wire connection, two for power supply and 2 for the signal). They are the simpler ones. We don't offer support to any wireless sensor or 2 wire sensor that use any digital communication protocol.
Thanks for your response. Had no experience with other than battery operated ones so far.
Would this one for example be ok?
It states dry contact...
Is it wired up similar to this?
I assume your project is in early stage and there is more info (like wiring diagrams) to come?
Yes, this one is ok! And you don't need this kind of modification. A 4 wire smoke detector is very simple. 2 wires are the power supply, usually + 12 Vdc and Ground. The other 2 wires works like a ordinary switch. If you set it to be "normally open", the switch will de closed (short circuited) in normal condition, and will de open when some smoke hits the detector. Normally close is the oposite. Usually the detector have a jumper to select if you want a "normally open" or "normally close" mode.
All that you need to do about the wiring is to connect the 4 wires of the smoke sensor as drawed here:
Schematics
Oh, I missed the diagram!
Sounds good. Thanks for your explanation!
I hope I find time to dig into it soon.
Thanks!