One of the oddities of the RepRap community is the heated bed connector on the very popular RAMPS controller. It's undersized for modern beds and this is known for years, but nobody fixes it (which would trivial).

Anyways. One of the solutions to work around this situation is to use a SevenSwitch to do the hard work. Here we show how to connect this switch to a RAMPS and how to tweak the popular firmwares to work with the new switch instead of the old one.