The seeedstudio shield is not going to work. It is quite a bit different from the Arduino and Pololu shields. It uses in1-4 instead of direction,...
I have a PCB assembly line that only gets used about 20% of the time. I would be interested in making some application specific open source PCBs...
Great project, Gregg! DCC led me into a business opportunity about 8 years ago and I've been out of this hobby since then while focusing on...