I updated my OP to reflect my current setup which now uses a Raspberry Pi.
Usualy my winter projects dealing with HA are for my city residents this time arround I was interested in playing with a Pi for my off grid place.
So I picked up a 3B+ and started playing with it.
I wasn't interested in using one for my city place. Once the WM100 was released and users started posting about a WM100 companion module using a PI and getting RF I pitched this to Authinx. I noticed the Pi Zero W appeared as though it would fit inside a CM15. I had a few older CM15As with the RF daughter boards so I figured the space would be tight.
I knew the CM15A circuit board had been updated incorporating these daughter boards into the main board so I figured if the Zero W would fit into a older CM15A maybe the newer CM15As would provide more space for a larger pi or a better location for the Zero W.
I asked the Authinx Owner about a returned CM15A they may have laying around just so I could see the insides I told him the unit didn't need to be in working condition.
I explained I was interested in creating a Pi X10 controller meshing the CM15A and Pi as a proof that a WM Pro could easily be created.
To my amazement I was sent a free brand new working CM15A to use in my proof of concept Pi Controller.
The owner was worried about drivers but I explained many were already using Pis for HA which use the Linux OS and there were drivers for the CM15A freely available.
I began looking for a Pi type board that would fit in a newer CM15 Sadly it looked like a custom board would be needed to provide what the 3B+ offered.
I knew the Zero W board would fit inside as it would fit in the older versions so I mounted it in the newer CM15.
Rather then attempt to create software utilizing free drivers I looked at several readily available and decided on Home Genie.
I had some experience using this with a TV stick as well as Windows so I knew the setup would be simple.
The newer Cm15As run a little warmer then the older units so I was a bit concerned with the Pi being inside. However this has been running well now for several months with no side affects. HomeGenie (HG) is capable of doing every thing AHP can Plus so much more. Users can share there addons which easily install directly into HG.
Although HG has an Alexa plugin I created an addon to use HA-Bridge as the support for more devices was in the bridge.
for any one wishing to do the PI CM15A mod you can find my walk though here:
http://forums.tuicemen.net/index.php?topic=1291.0I highly recommend using a Pi with the CM15 even if you don't do the mod.
The Zero W cost me less then $10. The power supply actually cost me more.
Total cost for the mod was under $50 as I got shorter cables and mini USB adaptors to clean up the look.