Introducing new DIY hobby CNC controller project TOAD4 / EazyCNC

[John S]

Jonathon,
Don't know where you are getting 11kHz from.
The manual says the 6560 driver chip is limited to 15kHz

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The chips voltage supply range is from 6 V up to 40 V so the board can be used (with some
trivial component changes) down to 6 VAC and it might be possible to push it close to 40 VDC
giving some more drive capability for higher inductance motors, but that will require a better
regulated power supply so as not to exceed the 40 V under any circumstances.
The other limiting factor of the chip is it's 15 kHz step clock maximum which limits the step
rate to 3750 steps/sec using full step or 950 steps/sec with micro stepping. With a typical 1.8
step angle or 200 steps per revolution of common hybrid steppers this translates to about 19
r/sec or 1100 rpm and 4.5 r/sec or 280 rpm, respectively.

[Jonathan]

Jonathon,
Don't know where you are getting 11kHz from.
The manual says the 6560 driver chip is limited to 15kHz

This page from the first post:
About EazyCNC

It says:

Four identical stepper drivers:
...
up to 11 kHz step frequency'

Interestingly the next paragraph from the document you read says 5kHz!

In practice the microcontroller and its firmware can be the limiting factor and it maybe be
hard to push the software generated step clock rate above 5 kHz. Fortunately most applications
are likely to require much slower speeds.

So it might be 11kHz, certainly not more than 15kHz with TB6560 and might be just 5kHz. I think we need clarification from the member who started this thread...