I know, its wierd. But its happening. I now have Mach 3 controlling my water cooled spindle thru a CNC4PC C6 speed control board and a Chinese VFD. It works now. I can change speed in Mach 3 and the spindle responds. I can change Gcode, and I can use the spindle on button in Mach. All good. But when I change speed with the override, using the mouse to click on plus or minus buttons, or when I just move the mouse around the screen, I get CHANGES IN SPINDLE SPEED.
Nothing drastic, just enough to be an audible difference, and maybe a spike of 100 cycles or so. Its too fast to get an accurate readout, and it is spikey, and comes and goes with mouse motion.
So, what can cause the mouse motion to change spindle speed? My mouse is not wireless, BTW.
Thanks for any help.
Wayne C