Hello agains,
i was on the net looking at personal fabricators, and saw these schematics. i guess they are used to control stepper motors for the pf's. are they any good for a cnc machine?

http://reprapdoc.voodoo.co.nz/bin/vi...ommsController
http://reprapdoc.voodoo.co.nz/bin/vi...pperController

sorry, i tink you ahve to copy and paste the links.

An answer would be appreciated. they seem real easy to make and use.

thanks