Overvoltage protection (OVP) for the RC2014 backplane (5V direct jumper replacement)

[Massimo]

Since I populated my backplane with the 7805 for extra flexibility I was a bit paranoid that sooner or later I would plug 12V with the jumper still in place thus feeding 12V on the 5V line so I got myself some overvoltage protection modules from Aliexpress (https://it.aliexpress.com/item/1005007153799575.html).

I made myself a small gadget to replace the jumper with this module and using ground from the screw terminal so the whole thing is easily removable.

I tested it with an empty backplane and it does cap the voltage to about 5V but it gets hot fast so it's really meant to protect you in case of mishap not to be used all the time