I currently have a properly functioning Ox with a cheap chinese speed control managing my spindle. The unit comes with a pot which is used for manual spindle speed control. As I learn more, I want to have Mach3 control my spindle speed instead of doing it manually. The speed control has a PWM input and my breakout board (a common 5-axis board) has PWM outputs. However, i can't seem to get it all to work properly. I've attached pictures of both the speed control and the BOB. My first question is what pin on the BoB should i be using? It has a pin that is labelled as "PWM" which correlates to P1 on my board. But it also has a pin labelled "0-10v Speed control" which does not seem to correlate to a specific parallel port pin. The second question is how should Mach3 be configured? Please take a look at the screen captures and advise if if i have it incorrectly configured. Thank you!