at the moment, the raspberry can drive 5-6kHz with an unpatched
and 10-12kHz with a patched stepgen. (and I think, much more
is possible)
I want a cheap and easy to get and easy to handle IO-device.
not only for mills and other machines. for education this also
may be interesting.
Not really clear what you are trying to do, but the PRU on
the Beagle Bone Black can do step generation at 20+ KHz with
no problem, while also doing PWM and encoder input. It runs
the Machinekit fork of LinuxCNC with the PRU code from
Charles Steinkuehler.
Jon
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