This is a prototype magnetic linear encoder board. I messed up the footprint, so the board is not functional. I'll fix this and get a v1.1 out ASAP. Gory details here: http://blog.makerbot.com/2009/11/10/monday-rd-fail/

The board itself is going to be very awesome: Sporting the Austria Microsystems AS5306 chip which is a magnetic linear encoder. You put down a strip of adhesive backed magnet and then run this chip over it. It will tell you your exact position over the strip down to 15 microns. Hawt.

DONT MAKE THIS (YET)