Three Super Hard On’s built from PCBs from OSH Park. This layout was compact and well arranged. Off board pads were all arranged in a row on one edge, I used four conductor ribbon cable for neat wiring. The ribbon cable I have I got at Radio Shack, some years ago, it’s solid core, with a clear plastic coating. In short, it’s not very pleasant to work with. That said ribbon cable is my new favorite way to build. It makes for clean organized wiring. I don’t why I didn’t do this earlier. I have some old gray ribbon cable, I think it was from a PC hard drive connection cable, which I have been using on other projects.