I am working on bringing up a blackbox controller on a Cnc4Newbie machine. I am currently testing the integration of the VFD spindle/relay and that seems to be working fine, but with a catch. When I fire up the spindle, i lose communication with the controller. I can adjust the +10 output voltage to get the proper RPM but cannot communication with the controller. I have to power down the controller and restart. I read a thread about interference with the VFD signals and removed the VFD cable from the tracks. I now have the VFD running overhead with the water lines. This is a 220v spindle and the regular Chinese inverter. It does trigger the IoT relay when it powers up the spindle. I also have a USB filter on the computer but that didn't seem to make a difference. I plan to test manually starting the spindle today, but wanted to see if there were any glaring issues I have missed. Thanks!