The Unipi definitely tops the list of bang for buck and its open source, my only worry at this stage is how to integrate it into HA.
Teunis Jan Teunis has done some work on converting the Unipi Evoke data to mqtt which looks promising and you have done some good work on integrating the xLogic Soft with the HA modbus hub. Thanks for sharing your project!
I am much better at copying someone else’s code than I am at writing my own so it’s reassuring that some of my HA pals have had a go at this. Both of these option look promising and I know Evoke is supported by Unipi but there is no mention of xLogic Soft. I really have to just get one of the PLC’s and start playing around with it so I can get familiar with it because once we start building I’ll have a million other things to figure out. The only problem is choosing which one.
As I’m an absolute PLC newbie I was hoping to pick your brain on a couple things…
I would need more I/O and relays than any single PLC offers so I was hoping to “daisy chain” two together to increase this. I know Unipi has the extension modules but they don’t offer as many AI/AO as the PLC’s do, or even Relays for that matter. Would this work or would I end up having to access the devices separately? Also what if I want an input on one device to trigger an output on another?
Secondly, RGB(red, green,blue) and SW(simple white) dimming. I assume this is where I need those AO’s 0-10v to manage a dimmer module like this Vellermann for RGB or this Anigmo for SW.
The Vellerman instruction manual has an easy to understand wiring diagram.
Regarding the Loxone, I think the mentioned DO’s in their documentation actually refers to relays. If you look at the pictures of the inside of the miniserver there are clearly 8 relays in there.
The Loxone systems biggest advantage is their “tree” topography. Instead of each device having to come back to the PLC, or miniserver in this case, there is a “tree” module which the devices can daisy chain onto. So instead of many data cables running to each different location you only have one running to the location and then they connect to each other, device to device. Great for installation of course, but you have to use one of their tree compatible devices and I worry about future proofing. What if I or the next owner doesn’t like Loxone and needs a star wired set up? But then the chances are that if you are going to rip it all out you will probably be doing a refurb and new wiring job anyway so maybe I’m over thinking this.
Also Loxone has some really nice “out of the box” devices. Their switch plates are excellent and light dimming seems to be really straight forward. Also there is a big enough forum community.
Maybe the solution is to split it up. Do the lights and switches with Loxone and all the blinds and heating etc with Unipi… There are so many options!