Fantastic build! I have learned a lot from this one, thank you.
Software speed control of a brushless dc (Bldc) motor from Mach3.
Build in 'Other Builds' published by Tweakie, Jun 14, 2014.
Although this build is typically Mach3 related there is no reason it cannot be adapted for use with any machine control software which provides a PWM spindle control output. As an addition, an option has now been added which will enable the interface to manually control outrunner speed without the need for a PWM signal.
