Accidentally blew a fuse of Arduino CNC controller by reverse polarity

Today I was messing around with my CNC shield and GRBL. But somehow I managed to accidentally reverse polarity of my power cables.Till today I had no problem keeping that in mind. Fuse was blown and like it’s not enough yet- drives also. Since DRV8825 have no reverse polarity protection- I toasted 3 of them in a blink also.

Anyway – I “replaced” fuse by soldering random wire (hopefully will act as fuse as well someday?) in place of original, and everything seemed to work. Of course had to replace drives. Arduino seems also undamaged by this mishap.

Photo of burned fuse

Here is  photo of aftermath.

Arduino CNC controller shield with blown fuse

Arduino CNC controller shield with blown fuse

 

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