    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
    iteration.

    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.