An electronics, automobile, and DIY enthusiast has turned an old smartwatch into an interactive gear shift display in his 2001 Audi A4 (B5) luxury compact executive car. The project started as just a bit of digital bling for the gear stick, but inspired by fellow Redditor comments, Desmontei vibe coded a WearOS app to add gear indicator and media control gestures to the repurposed digital dial. The watch face was secured to the gear stick very carefully, using a 3D-printed mount with tight tolerances.
Don't throw away old smartwatches! 3D printed a custom housing to turn one into a Digital Shift Knob. ♻️🕹️ from r/3Dprinting
