# thirtythreeforty/businesscard-linux

A Buildroot distribution small enough to run on my business card

Repository: https://github.com/thirtythreeforty/businesscard-linux
Canonical: https://ross.abutalabs.com/products/businesscard-linux
Homepage: https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/
Language: Makefile
License Family: other
Topics: buildroot, linux, allwinner-f1c100s, lichee-nano
Last push: 2025-09-04T06:44:27+00:00

## Health v2 (maintenance only)
Score: 50/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 40, release rhythm 35, longevity 100
- inputs: {"age_days": 2682, "days_push": 363, "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 1864, forks 184 (observed 2026-08-28T04:05:46.129875+00:00)

## What it is
A Buildroot-based Linux distribution small enough to fit in the 8MB flash of a business-card-sized ARM computer built around the Allwinner F1C100s SoC. It provides board support files, patches, and packages as a Buildroot external, producing a bootable firmware image for the Lichee Pi Nano or the author's custom business card.

## Use cases
- build a tiny Linux firmware image for the Allwinner F1C100s
- run Linux on a Lichee Pi Nano with 8MB SPI flash
- create a bootable USB gadget that shows up as a flash drive and serial console
- learn embedded Linux with Buildroot externals
- fit a minimal root filesystem into a few megabytes of flash

## When to choose
- you have an F1C100s or Lichee Pi Nano board and want a working minimal Linux build
- you want a reference project for extreme size-constrained embedded Linux
- you want to reproduce or fork the business card firmware

## When to avoid
- you need a general-purpose distro or package manager on larger hardware
- you need a maintained, licensed, production-ready distribution (no explicit license file, niche hardware)
- you target boards other than the F1C100s

## Facets
- artifact type: infra-config
- maturity: maintenance
- function: embedded, build-tool, developer-tools
- domain: embedded-systems, operating-systems, hardware
- platform: embedded
- tags: buildroot, allwinner-f1c100s, lichee-nano, firmware, business-card, arm-soc, minimal-linux, linux, arm

## Member repositories
- thirtythreeforty/businesscard-linux (main) score 50

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:46.129875+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 2026-08-30T03:15:37.141853+00:00, confidence not recorded.
  - readme: https://github.com/thirtythreeforty/businesscard-linux (fetched 2026-08-28T04:05:46.129875+00:00, sha e6ee9524d129)
  - homepage: https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ (fetched 2026-08-29T10:54:38.374591+00:00, sha 604244471ed9)
  - site_page: https://www.thirtythreeforty.net/about (fetched 2026-08-29T10:54:38.377415+00:00, sha 251cef027698)
- Data as of 2026-08-30T08:39:29.467469+00:00.