The Efabless Open MPW Shuttle Program provides fabrication for fully open-source projects using the SkyWater Open Source PDK announced by Google and SkyWater.

The shuttle provides opportunities for designers to experiment and push the state-of-the-art without having to reconcile the risk associated with the cost of fabrication.

The shuttle program is open to anyone, provided that their project is fully open source and meets the other program requirements. The first shuttle run is planned for November of 2020 with more scheduled for 2021. Costs for fabrication, packaging, evaluation boards and shipping are covered by Google for this program.

Project Submission Requirements

The following project requirements must be met in order to qualify for inclusion on the shuttle program:

  • The project must be targeted on the currently-supported SkyWater Open PDK for the 130nm process.
  • The project must be posted on a git-compatible repo and be publicly accessible.
  • The top-level of the project must include a LICENSE file for an approved open-source license agreement. Third-party source code must be identified and source code must contain proper headers. See details here.
  • The repo must include project documentation and adhere to Google's inclusive language guidelines. See details here.
  • The project must be fully open. The project must contain a GDSII layout, which must be reproducible from source contained in the project.
  • Projects must use a common test harness and padframe based on the Caravel repo. The projects must be implemented within the user space of the layout and meet all requirements for the Caravel.
  • Projects must successfully pass the Open MPW precheck tool, including LVS and DRC clean using the referenced versions of OpenLane flow.

For detailed information, please consult the Open MPW FAQs page


  • November 12, 2020: Project submission is open
  • November 30, 2020: Project submission is closed
  • February, 20, 2021: Expected wafer run complete, packaging and assembly begins
  • May 15, 2021: Parts and assembled boards shipped to project owners


In order to submit a project for the Open MPW program, complete the following steps:

  1. Register for an account on the Efabless platform (if you have not done so already)
  2. Create a project using a public git repo from the My Projects page
  3. Execute precheck verification tool on your project, fix any problems on your repo and re-run precheck
  4. Complete your profile including full name, email and your physical address
  5. Submit an Open MPW request using your created project
  6. Download this form and complete and submit via the request
  7. Review and complete your agreement with Efabless
  8. Review deliverables for your MPW request and select ‘Submitter Confirmed’ when
    you have completed all deliverables
Note: To withdraw your submission, go to the Request tab and close your request



  • See the following page
Request Info Category Owner / Company Open Date Status
Philipp Gühring Info Open MPW Philipp Gühring / LibreSilicon Association Nov 22, 2020 Open
Jecel Mattos de Assumpção Jr, Merik Voswinkel Info Open MPW Merik Voswinkel / Fiberhood Nov 24, 2020 Open
vdp-lite Info Open MPW Dan Rodrigues Nov 25, 2020 Open
Anton Dyudin Info Open MPW Anton Dyudin Nov 30, 2020 Open
EF-Openfpga Info Open MPW Manar Abdelatty / Efabless Nov 30, 2020 Open
OpenFPGA-AP3-2 Info Open MPW K.C. Yap / QuickLogic Nov 30, 2020 Open
Thomas Parry Info Open MPW Thomas Parry Nov 26, 2020 Open
PyFive Info Open MPW Sylvain Munaut / PyFive Nov 25, 2020 Open
Alvaro Jover-Alvarez, Cristina Peralta-Quesada, Leonidas Kosmidis and Iván Rodriguez-Ferrández Info Open MPW Álvaro Jover Álvarez / UPC/BSC Nov 26, 2020 Open
Bryce Readyhough, Md Munir Hasan, Michael Stetzler Info Open MPW Michael Stetzler / UNC Charlotte Nov 25, 2020 Open
SOFA HD Info Open MPW Xifan Tang / UNIVERSITY OF UTAH Nov 27, 2020 Open
DSP48 and DAC Info Open MPW Bittu N Nov 28, 2020 Open
q-rib Info Open MPW Dimitri del Marmol / 0x01 Nov 29, 2020 Open
General Purpose OpAmp - Fundacion Fulgor Info Open MPW Diego Hernando / Fundación Fulgor Nov 28, 2020 Open
OpenTDC Info Open MPW Tristan Gingold / Tristan Gingold Nov 29, 2020 Open
Caravel_analog_rf_testchip Info Open MPW Amro Tork / Mabrains Nov 29, 2020 Open
Ibtida SoC Info Open MPW Muhammad Hadir Khan / Micro-Electronics Research Laboratory Nov 28, 2020 Open
Affan Abbasi Info Open MPW Affan Abbasi Nov 29, 2020 Open
Daniel Galvez Info Open MPW Daniel Galvez Nov 30, 2020 Open
Softshell Info Open MPW Harrison Pham Nov 30, 2020 Open
Loester SoC Info Open MPW Loester Franco Botelho / VLSI System Design Nov 30, 2020 Open
hs32-latte Info Open MPW Kevin Mack Baragona / HomebrewSiliconClub Nov 30, 2020 Open
OpenFPGA-AP3-1 Info Open MPW K.C. Yap / QuickLogic Nov 30, 2020 Open
M and J Aamold Info Open MPW Matt Aamold Nov 30, 2020 Open
FWPayload Info Open MPW Matthew Ballance Nov 29, 2020 Open
Chameleon SoC Info Open MPW M. Shalan / Efabless Nov 30, 2020 Open
Caravel Plus Info Open MPW M. Shalan / Efabless Nov 30, 2020 Open
Jean Cyr Info Open MPW Jean Cyr / Self Nov 30, 2020 Open
Ghazi SoC Info Open MPW Zain Rizwan Khan / Micro Electronics Research Laboratory Nov 28, 2020 Open
linsorter Info Open MPW Vladimir Milovanović Dec 01, 2020 Open
AFTx06 Info Open MPW John Martinuk / Purdue University Dec 02, 2020 Open
Spectravel Info Open MPW Vladimir Milovanović / NOVELIC Nov 25, 2020 Open
pifive Info Open MPW Anish Singhani Dec 01, 2020 Open
antmicro-aes Info Open MPW Michael Gielda / Antmicro Dec 04, 2020 Open
FPGA250 Info Open MPW Arya Reais-Parsi / University of California, Berkeley Dec 01, 2020 Open
N5 SoC Info Open MPW M. Shalan / The American University in Cairo Nov 30, 2020 Open
Matt Venn Info Open MPW Matt Venn Nov 23, 2020 Open
SOFA-CHD Info Open MPW Xifan Tang / University of Utah Dec 15, 2020 Open
Astria Info Open MPW Astria Nur Irfansyah / ITS Surabaya Dec 01, 2020 Open
RISCV_OSU Info Open MPW James Stine / Oklahoma State University VLSIARCH Dec 16, 2020 Open
Analog PLL Info Open MPW Lakshmi S / VLSI System Design Dec 19, 2020 Open
RAPcores Info Open MPW Steve Kelly / RAPCores Dec 19, 2020 Open
Tiny_riscv_core Info Open MPW Abdul Muneeb / Lampro Mellon Dec 30, 2020 Open
Anton Blanchard Info Open MPW Anton Blanchard / IBM Dec 31, 2020 Open
SweRV EL2 TestChip on Google MPW Info Open MPW Srini Vemuri / Western Digital Jan 25, 2021 Open
Merik Voswinkel, Jecel Mattos de Assumpção Info Open MPW Merik Voswinkel / Fiberhood Jan 28, 2021 Open