Hi and thanks!
Yes, I designed & did the layout for the PCBs and the front panel as well as selecting & sourcing all the parts. The only thing I didn't do was design the circuit. I was handed a basic schematic and I took it from there.
As far as module kit recommendations go I can't really say much since I'm making all original modules and I haven't built any others, but there sure is a lot of really interesting & well supported stuff out there!
I will however very
strongly recommend that for a module rack, you go with the DIY 51X rack & PSU. It's excellent quality and you get 11 spaces per 3U rack. I have two racks and a double PSU (in a 2U housing) which yields 22 module spaces for not too
much more money than a pre-built 10-space rack with PSU (when you consider that you get more than double the amount of slots). Also, you can buy it in stages and expand as you need to. The PSU can be built one side at a time so you can always add a second rack & PSU later. Plus, the guys who designed & sell it are a real pleasure to deal with and the build thread is really comprehensive should you need some help.
Here are some links to the GDIY/51X stuff: GroupdDIY 511 Racks: 3rd round available Newbie builds GroupDIY 51X rack
Good luck & thanks for your compliment!