YouTuber Zack Freedman wanted to improve his video-editing workflow without spending $100s on new hardware, so he grabbed a Teensy and committed to a one-weekend time limit over which to build his own control surface.

Essentially three normal and one giant knob plus a weird mechanical keyboard, the project is mostly 3d-printed beyond these components, supporting passives, and basic hardware. Source code, design files, and BOM can be found on GitHub, while the accompanying video not only shows you how to put it all together, but also provides a slew of great tips for successful rapid prototyping.