Hi Nobby,
I doubt you would buy one ‘off the shelf’, so to speak, but I am certain you could cobble one up if it was your desire.
The prime factor with CNC is accuracy / repeatability / reliability / etc. and anything ‘wireless’ potentially opens the doors to outside, unwanted and perhaps unexpected, influence to the machine’s operation.
A wireless breakout board could be considered the same thing as having a radio controlled CNC machine. A very neat idea but not a risk I am prepared to take so I think I will just stick to shielded cables and hard wiring for now.
Tweakie.