bdring

You might consider using the new P parameter in your macro. It will be more accurate, because your macro does not account for deceleration. http://wiki.fluidnc.com/en/features/supported_gcodes#g38-probing The double touch is typically...

What is your $0 (Step pulse time, microseconds) setting in Grbl. I think the default is 10. The FluidNC default is 4. You have it at 2.

I think our min is 0. We should look at both limits.

Anything that uses the TB6560 is about as low end as it gets. I would try 10 and lower your expectations on speed to about 33KHz.

TB6600 was supposed to replace those almost a decade ago.

I think 10 might work. A lot of Grbl users have had success with the default.

@DEST1981 Start your own issue if you want help. You are not giving complete information.

Please post your startup messages. http://wiki.fluidnc.com/en/support/requesting_help#fluidnc-startup-messages

Try using version 3.4.4. It is the [version we recommend](http://wiki.fluidnc.com/en/installation#using-pre-compiled-files) right now. Before you do that though, try sending `$message/level=debug` and paste the response. It should show you more about...

You can use the `limit_all_pin:` to put a switch at both ends of an axis on the same I/O pin. You cannot use the same input for more than one...