On the matter of your work on a future CP4 “over-current” limiter – would it be possible to use an appropriate in-line fuse in the CP4 power cable?
For example, using the cigarette lighter plug, which has a fuse in it – would replacing it with a suitably lower amp rated fuse have prevented this situation, or would it trip too easily on power surges? Can you suggest a more suitable fuse rating?
Of course, that would mean having to keep a lot of spare glass fuses on hand, for such emergencies. Hopefully those would be exceptional, if proper axis Limits are programed into one’s controllers.