All the recent talk about AP circuits inspires me to ask: what is
a good tool for a hobbyist to use for doing PCB layout?  APC offers
Easytrax, is that a good product?

I've finished my first project, a servo controller.  It mostly
works, but there is some unreliability, which I suspect is from
motor noise and power dips when motors start up.  _Mobile Robots_
suggests that these problems can be solved by putting a capacitor
from power to ground, but they don't specify the size.  Can anyone
recommend a good size to start with?  If I had a big box o'
capacitors, I'd do the experiment myself, but I'm just starting.

Thanks,
Brian