Original Prusa i3
Original Prusa i3 MK2 3D printer printed parts observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3906
- days_rel: n/a
- days_push: 906
- n_releases_24m: 0
Adoption not part of the score
1718 stars · 842 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Open-source firmware for the Original Prusa i3 MK3S/MK3/MK2.5S/MK2.5 line of 3D printers, based on Marlin 1.0.x and written in C++ for AVR microcontrollers. It is developed by Prusa Research and distributed under the GNU GPL 3 license.
Use cases
- flash custom firmware on an Original Prusa MK3S printer
- modify printer behavior like mesh bed leveling or filament runout handling
- build Prusa firmware from source with CMake
- contribute improvements to Prusa i3 printer firmware
- translate printer firmware into another language
When to choose
- you own an Original Prusa i3 MK2.5/MK3-series printer and want official or custom firmware
- you want to tweak or extend printer features at the firmware level
- you need a GPL-licensed Marlin-based firmware tuned for Prusa hardware
When to avoid
- you have a Prusa XL, MK4, CORE One, or MINI printer - those run different firmware
- you want a slicer or host software rather than printer firmware
- you need firmware for non-Prusa RepRap printers - upstream Marlin is a better fit
Facets
application · maturity active
embedded hardware embedded windows 3d-printing firmware marlin reprap avr prusa-i3 fdm automation linux macos
7 sources
- readme: https://github.com/prusa3d/Original-Prusa-i3 · fetched 2026-08-28 · 3ae510eeb7ce
- homepage: http://prusa3d.com · fetched 2026-08-29 · b3307dddb17e
- site_page: https://www.prusa3d.com/page/about-us_77 · fetched 2026-08-29 · 720942dfa14e
- site_page: https://www.prusa3d.com/page/information-about-cookies_231459 · fetched 2026-08-29 · 4d2b33d50175
- site_page: https://help.prusa3d.com/article/shipping-information_2297 · fetched 2026-08-29 · 38c53fd91ab7
- site_page: https://blog.prusa3d.com/adrian-bowyer_127066 · fetched 2026-08-29 · 44f2a27d2518
- site_page: https://forum.prusa3d.com/forum/original-prusa-xl-tool-changer-general-discussion-announcements-and-releases/6-10-1-firmware-for-prusa-xl-xl-2?language=en · fetched 2026-08-29 · 9c34cd490eab
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| prusa3d/Original-Prusa-i3 | main | 23 |
| prusa3d/Prusa-Firmware | backend | 39 |
For agents
markdown · JSON · MCP: product_card(name="prusa3d/Original-Prusa-i3")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem