On Jan 25, 2011, at 12:49 AM, David C. Kerber wrote: > Thanks for the suggestions, DJ. Unfortunately, there's really no room for a > pc where I have the microscope set up, and most laptops don't even have > parallel ports any more. Plus running a full-blown pc just to drive a > microscope seems like rather a waste of electricity.
At Noqsi, we're starting to do jobs like this with an Armadeus board (http://www.armadeus.com/). Tiny Linux system with an attached FPGA for custom interfaces. Free/open software, firmware, and hardware. You could use the Linux USB infrastructure. >> >> [mailto:geda-user-boun...@moria.seul.org] On Behalf Of DJ Delorie >> >> I think steppers are the right way to go. Easy to operate, >> easy to position, go round and round more than once. >> Controlling the steppers is easy, you just need a few >> N-mosfet transistors (or a dual H-bridge chip, I suppose). I agree. John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ j...@noqsi.com _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user