Wasn't on HN, not so long time ago, maybe couple of months, how to create a mechanical keyboard from a Raspberry Pi? I think the author of this article could've

Wasn't on HN, not so long time ago, maybe couple of months, how to create a mechanical keyboard from a Raspberry Pi? I think the author of this article could've benefit from that one. Could've created his custom keyboard, without any additional software to link two separate keyboards in one, could've made it as wide or as split he wanted and with as many programmable keys (if he'd want) as needed.