[This looks interesting, Dan. Have you ever tried these out for
controlling
servos? Has anybody here? I assume the $175 is per axis, but still, it
doesn't look that bad if that's all I'll need to retrofit my old mill to
accept unlimited g-code file sizes. Could it be that simple? Are these the
kind of boards that have their own chips onboard, so they can buffer the
input from the computer and real-timeness isn't an issue? Or is there
something I'm not taking into consideration here? I wonder how well the
control software that goes with these things really works...]
Andrew Werby
These boards have their own control language running over a serial port and
you need some kind of software to generate that from gcode. Kerr has a
stepper adaptor that will fool the board into accepting stepper input but
Dan Mauch says it slow. Since to look is closed in hardware on the board the
real time requirements are not as much an issue. Jeff Kerr says it is
possible to tell 4 axis what to do about 400 times per second max, which
seems like it should be adequate.
Andy Olney
