Hi everyone, (first post here, couldn’t find similar post, don’t shoot me ;-)).
I have OpenHab 2.5.9 running on Windows. All working solidly with C-Bus and Philips Hue lighting.
Now to connect my sensors… I have 40 magnetic reed sensors built inside the wooden door and window frames. They all have CAT5 runs back to a central server area - connected to nothing. I also have 20 CAT5 runs to install motion sensors (no idea which type yet).
HW: What hardware would you recommend to hook all of these up to?
SW: What hardware works best with OpenHab for this? (One day, I’d like to build a floorplan view of the house who show status of all of the contacts/sensors and 60 lights. I assume Openhab wouldn’t have a problem showing the status of over 120 things on one screen?)
I have a similar installation and trust only wired contacts if possible I use ADAM-6050 with modbus-binding for that, very relyable. If I do not have cables I use z-wave. Maybe homematic will work too, not tested.
I know only PRI which can control bulb directly, no relais in between. So the answer is no.
But you can use a relais instead of the bulb to get the contact you want. Or PIR with contact exists, never seen but never searched
I use a 12V DC big power for ADAM6050 and everything else which is connected to it. ADAM6050 can olso be used ad DI and Counter, very useful for metering other things like water, gas, power meters with contact output or open collector.
They can all use the CAT cables you have installed, but for anyone reading this, I don’t recommend using CAT style cables for the Velbus BUS cable, because the solid cores get fractured when used with rising cage terminations and the cores aren’t great at carrying the supply voltage for larger networks. (Unless you deploy a star topology, which kind of defeats the point of a BUS system)
Alternatively, you can look at the I2C bus devices and use them as GPio pins from an SBC.
Any will do so optimize for cost. IIRC (search the forum yourself) there’s a device called Pokeys57E that has ~50 inputs for less than ~100$ so that could be a prime candidate.
Motion sensors, well. Will you want to do motion sensing only ?
I’d spend some thoughts on deploying multi sensors that can also do temp, humidity, luminosity.
I also use Z-Wave multi sensors and "mis"use cables to provide power to them.