I see a few descriptions of controlling spindles from Mach 3, but nothing I found that answers my question.
I have one of these breakout boards:
Attachment 221262
and this spindle controller (6v - 90v)
Attachment 221264
My setup is running fine with the pot that comes with the spindle controller and measured it out that it varies the control voltage from 0-5V. The controller pot pinout is GND-VAR-+5V
On the breakout board I have a 0-10V (-) and 0-10V (+) and a PWM output.
I have never attempted to control my spindle from Mach3 so pardon the ignorance.
Would i just run a line from PWM to the VAR input on the controller? or somehow use the 0-10V lines and configure Mach3 to run the spindle at 50%?
Here's some more pinout info for the BOB