CATkit, a PCB designed in collaboration with GOTO10 and the
Huddersfield University Centre of Excellence in Digital Design.

This is the first iteration towards a standard platform for teaching
Staapl/Forth based embedded application development for PIC18.
However, it has some bootstrapping problems that introduce a
dependency on PIC programmer hardware and a specific (expensive) USB
serial cable that prevent its effective use as an essentially
zero-cost platform.  I am looking into ways to solve this in a second

The schematics are available here. 
This circuit is supported by the Sheep software.

The PCB layout is freely available upon request.  The board hardware
is no longer for sale.  In return for feedback or collaboration on the
Staapl project, I can send you one of the remaining kits as a trade.