Quote Originally Posted by Nr1madman View Post
If anyone have the same problem as I had with uc300usb and e stop then I think I found a fix.

I hadn't made an error connecting it but it had a jumper that controlled if it was powered via usb or external 5v.
I had it on usb supply apparently and this somehow got triggered by e stop (interference or current surge/dip?) Causing the controller to loose connection to uccnc.

Now I have tried it with power from stable 5v supply and nothing happens with the connection when e stopping, well except the pc senses e stop as it should :D
That's USB for ya.!!. . . . Like Box Chocolates.?