# google/mozc-devices

Circuit diagrams and firmware source code for Gboard DIY keyboards

Repository: https://github.com/google/mozc-devices
Canonical: https://ross.abutalabs.com/products/mozc-devices
Language: C++
License: Apache-2.0
License Family: permissive
Last push: 2025-11-07T06:46:35+00:00

## Health v2 (maintenance only)
Score: 55/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 51, release rhythm 35, longevity 100
- inputs: {"age_days": 4180, "days_push": 299, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2709, forks 176 (observed 2026-08-28T04:07:11.743359+00:00)

## What it is
Google's repository of circuit diagrams and C++ firmware source code for building DIY versions of Gboard novelty keyboards, formerly Google Japanese Input April Fools devices. It includes designs for devices like the drumset, morse code, patapata, and physical flick keyboards.

## Use cases
- build a DIY Gboard keyboard from circuit diagrams
- flash custom firmware onto a homemade keyboard
- recreate the Google Japanese Input morse code keyboard
- make a physical flick input keyboard
- customize keyboard firmware written in C++
- explore hardware designs for novelty input devices

## When to choose
- you want to build your own Gboard-style novelty keyboard hardware
- you need reference firmware code for custom keyboard projects
- you're interested in Japanese input method hardware experiments

## When to avoid
- you need a production-ready commercial keyboard
- you want software-only input methods without hardware
- you need officially supported Google product code

## Facets
- artifact type: application
- maturity: active
- function: embedded
- domain: hardware, developer-tools, gaming-tools
- platform: embedded, cpp, cross-platform
- tags: keyboard-firmware, diy-keyboard, circuit-diagrams, gboard, mozc, japanese-input, hardware-hacking, hardware

## Member repositories
- google/mozc-devices (main) score 55

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:11.743359+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:15:40.061419+00:00, confidence not recorded.
  - readme: https://github.com/google/mozc-devices (fetched 2026-08-28T04:07:11.743359+00:00, sha 7d93cff3e533)
- Data as of 2026-08-30T08:39:29.467469+00:00.