ORConf 2025

Friday to Sunday September 12–14, 2025 in Valencia, Spain

The ORConf conference is a weekend of presentations and networking dedicated to free and open source silicon. It's an event for the open source silicon community, and is run by the FOSSi Foundation and its volunteers.

ORConf, the sunshine edition

The FOSSi Foundation is proud to announce the 11th installment of ORConf, a conference dedicated to free and open source silicon to be held over the weekend of Friday September 12 to Sunday September 14 in Valencia, Spain. It is also the 10th birthday of FOSSi Foundation, which was incorporated at ORConf 2015 in Geneva.

ORConf is a weekend of presentations and networking for the open source silicon community. Browse through previous installments of ORConf here.

Questions? Ping the organizers via email at orconf@fossi-foundation.org.

You can still submit a lightning talk

Talk submissions are closed at this point. You can register for a lightning talk (3 minutes), please drop us an email at orconf@fossi-foundation.org to sign up. If you'd like to use slides, send them to us via email or upload them.

Code of conduct

We ask all ORConf participants to adhere to the the FOSSi Foundation code of conduct throughout the event.

Let's talk!

Join the #orconf2025:fossi-foundation.org Matrix room to chat with other participants at the conference, share additional information about the talks, about traveling to and from Valencia, and what else comes to your mind!

Venue

ORConf 2025 will be held at in Valencia, Spain at the School of Informatics (ETSINF) of the Universitat Politècnica de València, building 1E.

Address: ETS de Ingeniería Informática, building 1E, Camí de Vera, 14, 46022 València, Valencia, Spain (Google Maps).

On Sunday, not all gates are open. Use the main gate (Google Maps).

Social event

The social event is held at Restaurante Cocoa Patacona, right at the beach (Passeig Marítim de la Patacona, 3, 46120 Alboraia, Valencia, Google Maps)! Please enter from the beach side. The social event starts at 8pm. You can join us to walk there together after the talks.

Supporters

We thank all our sponsors, exhibitors, and all participants who donated by buying a Pay-what-you-want or Professional Ticket.

HRT
Antmicro
Chip Design Germany
OpenChip
Precision InnovationBarcelona Zettascale LabWitChipFlow

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Schedule

All times are subject to change.

Friday, Sept 12: Conference

Saturday, Sept 13: Conference, lightning talks, and social event

Sunday, Sept 14: Unconference and workshops

The unconference starts at 10am at the same venue we used for Friday and Saturday. Just leave whenever you have to travel back or you ran out of discussion topics -- typically that's around 3pm. We will provide some drinks and lunch during the day.

Not all university gates are open! Use the entrance here: Google Maps.

On Sunday we will have an unconference and workshops to have more time for focused discussions. Even though the exact schedule and topics to talk about will be created together at the event, you can expect in-depth discussions with key stakeholders in Free and Open Source Silicon Projects, demo sessions, hackathons, and more.

Community Building for Publicly Funded Projects

Many open source projects originated from an academic or industrial research environment. Over the last years we see an increasing interest from funding agencies in open source EDA tools, open source design IP and open PDKs. One of the challenges of such projects is to build sustainable communities around the project results.

In this workshop we want to discuss experiences from publicly funded projects and jointly formulate goals and guidelines that can be useful.

Contact: Stefan Wallentowitz

Discussion topics proposed

  • Timing closure challenges on your open-source projects (Matthew Guthaus)
  • Hackathon focused on Analog/Quantum open-source GDSFactory PDKs: improve the RF and analog samples in both gf180mcu and sky130, as well as quantum PDK (Joaquin Matres)

Ideas for other unconference and workshops?

For exampe, at last year's ORConf we had fantastic sessions on

  • cocotb
  • EU Roadmap
  • Amaranth
  • Open Source DFT and in-field debug
  • Clash and Haskell
  • Surfer

What deep-dives will we have at ORConf? It's up to all of us!

Feel free to submit your ideas ahead of ORConf or propose them throughout the conference.

Talks

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