I ran into an unexpected issue this weekend:
So far, the CNC didn’t have any electrical problem, if was running fine. Recently, I added a dust shoe, connected to a little vacuum cleaner.
It seems like the CNC and the vacuum cleaner don’t get along too much… Whenever milling something, the Arduino will lose connection or even shut down and/or restart, at totally random times. I did not find any pattern so far.
This actually blew one Arduino Mega, first the regulator fried, then a little resistor near the USB port. I replaced it thinking it would solve my problem, but apparently it doesn’t.
After a bit of Googleling, I found out that this problem is not unknown, and it is likely cause by a ground loop. But I didn’t find any solution, or at least I didn’t understand what I’m supposed to do to resolve this.
Does anyone knows what I should do?
Thanks a lot in advance for your help,