the good news is that there are clear indications now that it is possible, it’s
just a matter of the acceptable speed.
There is talk about parallel ports being limited to ~50KHz of updates, at full
speed, we need 320-500KHz of updates.
I don’t know if the Pi with it’s GPIOs is better than that. There are posts
indicating that the BBB may be able to reach those speeds (thanks to the PRC)
While I would like to use the PI, if we can use the LinuxCNC on the BBB, that
will be FAR better for us in the long run.
David Lang