Behind the build

Notes from the workbench.

Device guides, technical decisions, and research. For the curious, the hands-on, and anyone who wants to see how things work.

Device guide · Firmware v1.0.0

Moji user manual

The original July 2026 guide to expressions, two-button controls, games, settings, and power. Current development notes cover the newer v1.0.4 candidate.

Research & design

Self-Balancing Electric Vehicle

A simplified balance loop and control flow, with the development story across two hardware revisions. Detailed design files are shared selectively.

These notes evolve with the projects. Work in progress and older firmware guides are labeled so you can see what has been built and what is still being tested.