> On 20 Feb 2020, at 14:25, Jeff Johnson <[email protected]> wrote:
> 
> 
> Any thoughts or ideas on the best way to pull this off? PC? RPi4? Which

Why not add a 4th axis configuration to each machine that might use it? Then 
you can properly integrate the motion control?

You can actually do it with a single config. I have a jumper in one of the 
connectors that the rotary connects through. If the system doesn’t see the link 
(via an IO pin) it doesn’t enable the axis. 
Mine actually f-errors if you try to move the axis, but that would be easy to 
fix. 

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