Hardware Arduino Uno 3 - Poscope stepper driver boards 3 - Nema 17 Steppers

Hardware
Arduino Uno
3 - Poscope stepper driver boards
3 - Nema 17 Steppers

Software
GRBL
Chillipepper

While in Chilipepper when jogging 1 axis the other 2 axis twitch.
Slight motion one way when the jog starts and slight motion back when jog stops.

Arduino and stepper driver grounds are all tied together. I had them apart which didn’t matter. Enable pins are all tied together.

I think the enable pin tied together is the problem. Is it something else?

The twitching surely sounds like your enable pin flipping on/off.