There's an old machine in my shop. When you work on it you have to double-tap a certain button a lot. It gets annoying considering the design of the button (long with a single pole in a middle). I wanted to install a new button (soldering it to the board in parallel to the old one), but so that you only have to tap it once. I tried looking for a push-button that would implement it mechanically, but didn't find anything. Anyone help me to design a schematics that would simulate that electronically?