# bigtreetech/BIGTREETECH-SKR-mini-E3

BIGTREETECH SKR-mini-E3 motherboard is a ultra-quiet, low-power, high-quality 3D printing machine control board. It is launched by the 3D printing team of Shenzhen BIGTREE technology co., LTD. This board is specially tailored for Ender 3 printer, perfectly replacing the original Ender3 printer motherboard.

Repository: https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3
Canonical: https://ross.abutalabs.com/products/bigtreetech-skr-mini-e3
Language: C++
License Family: other
Last push: 2025-07-09T12:19:22+00:00

## Health v2 (maintenance only)
Score: 46/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 30, release rhythm 35, longevity 100
- inputs: {"age_days": 2630, "days_push": 420, "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 2263, forks 2005 (observed 2026-08-28T04:06:32.006181+00:00)

## What it is
Repository for the BIGTREETECH SKR Mini E3, an ultra-quiet 32-bit control board for 3D printers, containing firmware binaries, hardware documentation, and configuration resources. It is a drop-in replacement motherboard for the Creality Ender 3 and compatible printers, with integrated TMC stepper drivers.

## Use cases
- upgrade an Ender 3 with a quiet 32-bit motherboard
- find firmware for the SKR Mini E3 V1.x or V2.x board
- get hardware documentation and pinouts for the control board
- replace the stock 8-bit mainboard on a Creality printer
- configure Marlin firmware for a SKR Mini E3 board
- support dual Z-axis printers like the Ender 5 Plus

## When to choose
- you own a BTT SKR Mini E3 board and need its firmware or docs
- you want a quiet drop-in motherboard upgrade for an Ender 3 or similar Creality printer

## When to avoid
- you need Marlin source code itself (use MarlinFirmware/Marlin)
- you need pre-tested printer configuration files (use MarlinFirmware/Configurations)
- you are looking for a general-purpose embedded firmware framework

## Facets
- artifact type: application
- maturity: active
- function: embedded
- domain: embedded-systems, hardware, developer-tools
- platform: embedded, iot
- tags: 3d-printing, firmware, marlin, control-board, ender-3, hardware-documentation, stepper-drivers

## Member repositories
- bigtreetech/BIGTREETECH-SKR-mini-E3 (main) score 46

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:32.006181+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 2026-08-30T02:42:28.284113+00:00, confidence not recorded.
  - readme: https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3 (fetched 2026-08-28T04:06:32.006181+00:00, sha 05709103d1a6)
- Data as of 2026-08-30T08:39:29.467469+00:00.