(SOLVED) Spindle PID tuning

That got me in the ballpark, now to just fine-tune until I lose interest chasing an RPM here or there.

Awesome, as usual PCW.

 

PCW wrote:

I guess I would start with a bit of P
(a P term of 1 means an error of 100 RPM means a
correction in the velocity command of 100 RPM )

and then some I
( a I term of 1 means an error of 100 RPM will result in a correction
velocity command of 100 RPM per second)
 

Peter how do you calculate the value or P = 1?
It must be related to the scale of the output?

Probably good info to add to linuxcnc's docs.
Chris