EPICS Controls Argonne National Laboratory

Experimental Physics and
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<== Date ==> <== Thread ==>

Subject: WEISS 1.0.0 release
From: André Favoto via Tech-talk <tech-talk at aps.anl.gov>
To: Tech Talk <tech-talk at aps.anl.gov>
Date: Tue, 7 Apr 2026 05:56:02 +0000
After a successful MVP, I'm happy to announce the first official release of WEISS.

Now introducing:

- ‎Roles: operator (only sees and interacts with OPIs), developer (edits, tests, commits and deploy OPIs to operators).
- ⁠Deployment model: developers can instantly make OPIs available to operators - versioning checkout available (see next);
- ⁠Version control: import a remote repo into the UI - checkout versions, edit, create commits - all from the browser. File diff highlighting available. For now, only linear commits to main branch are allowed and enforced.
- ⁠Worktrees: only you see your changes until committed. For demo mode, sessions are separated by browser. In actual prod, organization user identities are used.
- ⁠Organization account: integration with organization account via Microsoft Entra ID. For now when in non-demo this is the only method supported - others can be added as needed.
- ⁠New widgets: embedded display, images (svg, png, jpg, jpeg), progress bar, navigation button. More to be added soon.
- ⁠Several bug fixes and UI enhancements from MVP.
- ⁠First version of public docs! https://docs.weiss-controls.org


---

Note from author: This project's development has no association with any facility. WEISS started as a personal project for something I truly believe in and felt was missing in the community so far. All available frameworks I could find, well documented or not, would require either writing code - takes time and JS knowledge to build something - or mixing desktop development with web runtimes. WEISS fills this gap with a fully web native editor and deployment model. Everything can and should be done from the browser only. With the advancement and massive size of the global WebDev community, I think we need to get advantages out of it for the EPICS community. Please, don't hesitate to reach out if you're interested, want to discuss more or collaborate. I hope you like it.

Let's use web!


Bests Regards,

André Favoto



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