![\"\"](\"http:\/\/cornay.co.za\/wp\/wp-content\/uploads\/2020\/10\/1_ps2pc_detail.jpg\")
<\/a>But rather than waiting for an adapter to show up in the mail, he decided to rig up an Arduino Nano to mimic a PS\/2 keyboard<\/a> just long enough for him to navigate the system configuration. Since that basically meant he only needed the arrow keys and Enter, he was able to rig up a handful of momentary buttons to serve as input. We wouldn’t recommend typing out your memoirs with such a spartan board, but it’s certainly good enough to juggle around the order of boot devices.<\/p>\nThe fun didn’t stop there, though. [Turbaned Engineer] also had to clean some corrosion and fix a blown resistor on a bank of RAM to drag this old soldier over the finish line. He didn’t have a case handy, so he made a free-form one using the polycarbonate packaging that ICs ship in. The final machine isn’t exactly a sleeper, but it’s good enough to play\u00a0Super Mario Bros. 3<\/em> on the TV.<\/p>\n At the end of the day, the minimal input device [Turbaned Engineer] put together isn’t so far removed from other homebrew keyboards we’ve seen<\/a> recently. It seems that QMK even has some basic support for the PS\/2 interface. Not that it would come up very often, but a “retro” mode might be an interesting addition to your next custom keyboard build.<\/p>\n