Made something for all those left over ISO enter keys
A small board with space for 4 ISO enter keys with PCB mount Cherry stabilizers. Powered by a Pro Micro.
I have a lot of left over ISO enter keys that came with cheap keysets from eBay.
Bottom of the PCB. The hole serves no purpose, though you could use it as a pen holder. You could assemble it upside down, but then the enter keys would face outwards. You could also use the 2u backspace or numpad plus/enter key caps.
The two PCB's are held together with M2 spacers and screws. The Pro Micro is mounted to the bottom.
There isn't a lot of space to fit the Pro Micro. I left the top two pins unsoldered since they might touch the metal stabilizer wire. Also, the bottom left corner pin is removed since it sits under the plastic stabilizer housing.
The Pro Micro is programmed with a simple Arduino sketch. Sketch and PCB files are on git.