I’ve had my Nomad883 in the same configuration for months. Now, in the past week, I’ve started getting
GRBL Error: Serial Port: Unknown Error
and
GRBL Error: device Not Found
Current attempts to correct the problem are:
Make sure all USB connections are clean and contacting well.
Make sure there are no other power cords near the USB cord.
Restarted the controlling computer to make sure the USB ports are detecting properly.
I will be running with the above to see if the problem pops up again.
Also note: I have a second Nomad883 right next to the first, and it has not stopped at all. The USB cord is routed the same way as my older Nomad. I suspect something is going wrong with my older Nomad, or the computer I am using to run it.
I have adjusted my power settings. Apparently, windows 7 has a option to shut down the usb ports. I have disabled that feature. Let’s see if I get a disconnect again…
So far so good… if that was the issue… I’d call that a pretty good /facepalm moment. If anyone needs to know how to disable the “USB selective suspend” feature, I have instructions for both windows 7 and windows 10
Dang, it just stopped again… I need to check my USB connections inside the computer case. It stopped when I bumped my desk… that’s kind of a clue, I’m thinking!
Make sure that USB connections / connectors are firm and solidly connected and will not be bumped (I like to put a weight on each loose end before connecting).