# KMKfw/kmk_firmware

Clackety Keyboards Powered by Python

Repository: https://github.com/KMKfw/kmk_firmware
Canonical: https://ross.abutalabs.com/products/kmk_firmware
Homepage: https://kmkfw.zulipchat.com
Language: Python
License: NOASSERTION
License Family: other
Topics: keyboards, python, micropython, mechanical-keyboards, nrf52840, atmel, samd51, circuitpython, firmware, keyboard-firmware, arm-microcontrollers, keyboard, rp2040, stm32, hacktoberfest
Last push: 2026-04-09T12:08:07+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 76, release rhythm 35, longevity 100
- inputs: {"age_days": 2925, "days_push": 146, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1748, forks 514 (observed 2026-08-28T04:05:30.927542+00:00)

## What it is
KMK is a keyboard firmware written and configured in CircuitPython, supporting single-piece and split mechanical keyboards with features like chainable keys, macros, RGB lighting, and Bluetooth HID. Configuration lives in a single Python file on the microcontroller, editable without flashing tools.

## Use cases
- configure a custom mechanical keyboard in Python
- build a split keyboard with Bluetooth wireless connection
- add RGB underglow and LED backlights to a keyboard
- create tap-dance and macro keys on a keyboard
- edit keyboard keymaps on the go without flashing firmware

## When to choose
- you want Python-based keyboard configuration instead of C/QMK
- you use CircuitPython-compatible microcontrollers like RP2040, SAMD51, or nRF52840
- you want beginner-friendly firmware with a single config file
- you need wireless split keyboard support via Bluetooth

## When to avoid
- you need actively maintained firmware with timely bug fixes
- your board only runs QMK/ARM C toolchains without CircuitPython support
- you need features beyond KMK's supported modules

## Facets
- artifact type: library
- maturity: maintenance
- function: embedded, sdk
- domain: hardware, embedded-systems, developer-tools
- platform: embedded, python, cross-platform
- tags: keyboard-firmware, circuitpython, micropython, mechanical-keyboards, hid, bluetooth, split-keyboards, rgb-lighting

## Member repositories
- KMKfw/kmk_firmware (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:30.927542+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 2026-08-30T03:28:48.128171+00:00, confidence not recorded.
  - readme: https://github.com/KMKfw/kmk_firmware (fetched 2026-08-28T04:05:30.927542+00:00, sha 7b1567c5a416)
  - homepage: https://kmkfw.zulipchat.com (fetched 2026-08-29T11:06:43.712576+00:00, sha 57ab1c03db6f)
- Data as of 2026-08-30T08:39:29.467469+00:00.