“[Jaryd] even made their own spring for this beast using a drill an…

"[Jaryd] even made their own spring for this beast using a drill and a 3D-printed cylinder chucked into it. But the best part has to be the way it works: by actuating a regular-sized key switch connected to an Arduino." https://hackaday.com/2021/09/28/keebin-with-kristina-the-one-where-shift-happens/