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--- newsletters:2025-05 [2025/06/03 21:47] – [Hold bug fixes] osnr
+++ newsletters:2025-05 [2025/06/04 02:25] (current) – [Hold debugger and bug fixes] osnr
@@ Line 52: / Line 52: @@
 === Hold debugger and bug fixes ===
-I made a Hold debugger at /holds! It lists all active Holds in the system, which is a surprisingly useful lens to view everything going on in Folk (not as much spam as the full-statement list, and things that go wrong are usually Hold-related).
+I was debugging an issue with calibration where the new calibration sometimes wouldn't actually happen after all the poses were in place. (and wouldn't happen even after restart when you have poses but no calibration result)
-I used the Hold debugger to find 'anomalous' Holds that shouldn't exist, where the statement ref associated with a Hold is s0:0 (null). That means we tried to Hold a statement and then failed or something.
+It seemed to be an issue with the Collect when calibration poses are present but no calibration is present (that negated query uses a Collect internally). And that issue seemed to come from the Hold of the collection statement not locking in properly.
+So I made a Hold debugger at /holds! It lists all current Holds in the system (key, index, held statement), which is a surprisingly useful lens to view everything going on in Folk (not as much spam as the full-statement list, and things that go wrong are usually Hold-related).
+{{newsletters:a541289d-78c2-41ca-a07c-71ac756dba9f-1291-0000030c9eed51e0.png?300px}} {{newsletters:a5eaa225-97a4-4bbf-949a-d351dfc03233-1291-0000030ca69fdc06.png?300px}}
+I used the Hold debugger iteration to find 'anomalous' Holds that shouldn't exist, where the statement ref associated with a Hold is s0:0 (null). That means we tried to Hold a statement and then failed or something. That's how I diagnosed the bugs from above. I think there were two.
+  - If the statement you are trying to hold is already present (for whatever reason, maybe it was directly Claimed by someone else, maybe it's hanging around), we were setting the Hold object to a null ref. [[https://github.com/FolkComputer/folk/compare/301a16dd3fe1214250f8c22a9c9d710f8376a1e6...7d64049f85ff956c02fb405867d2331bb8fb55c8|We should set it to the reused statement ref and just use the Hold as another refcount supporter.]]
+  - We [[https://github.com/FolkComputer/folk/commit/244ecef3212b509769888ab060cdd6da74ea5a41|weren't initializing the version number]] in Hold objects, so if they were reused they'd have weird behavior on version check
 === Calibration ===
@@ Line 125: / Line 134: @@
 Omar made a simple test of whether it works in the presence of actual multithreading:
-{{newsletters:imag33e.png?500px}}
+{{newsletters:imag33e.png?600px}}
 Finally, Omar digested the changes into folk2 so we can run Folk on top. Involved passing the interpreter into a lot of getters that may shimmer the object (because you need the interpreter to bubble the shimmer):
-{{newsletters:ima33ge.png?300px}}
+{{newsletters:ima33ge.png?450px}}
 folk2 works as normal with this fork of Jim. But not doing actual object sharing between Folk worker threads yet; that's the next step here. Have put it off until calibration works and we can use that as a one-metric performance test (but we might be there now...)
@@ Line 147: / Line 156: @@
 {{newsletters:img_1421.jpeg?0x250px}} {{newsletters:img_1422.jpeg?0x250px}}
 === SenseScape event ===
+Omar and Andrés went to this [[https://www.instagram.com/sensescape.world/?hl=en |SenseScape]] event at Microsoft Garage and presented Folk to a bunch of artists, builders, and physical computing enthusiasts:
+{{newsletters:img_2617-medium.jpeg?0x250px}} {{newsletters:img_2615-medium.jpeg?0x250px}} {{newsletters:img_2673-medium.jpeg?0x250px}} {{newsletters:img_2668-medium.jpeg?0x250px}}
 === Other visitors and interactions ===
   * [[https://kellianderson.com/index.html|Kelli Anderson]] and her current [[https://www.kellianderson.com/books/springclasses.html|Paper Engineering class]] visited on May 15; they had a lot of fun writing Folk programs, doing origami, and chatting about the possibilities of the system for paper engineering and beyond:
     * {{newsletters:img_3515.jpeg?0x200px}}{{newsletters:img_0606.jpeg?0x200px}}{{newsletters:img_0602.jpeg?0x200px}}{{newsletters:img_0603.jpeg?0x200px}}{{newsletters:img_0596.jpeg?0x200px}}
-  * (Andrés) [[https://www.evettesniche.com/|Monique Evette]] visited the studio May 19th after we met at [[https://www.instagram.com/sensescape.world/|SenseScape]] the week prior
+  * (Andrés) [[https://www.evettesniche.com/|Monique Evette]] visited the studio May 19th after we met at SenseScape the week prior
     * {{newsletters:monique_evette_studio_visit.jpeg?200px}}
-  * (Andrés) our friend Kelin Zhang TODO
+  * (Andrés) [[https://www.ellecor.com/|Michelle Cortese]] visited and made this flower stop motion animation below. We also discussed [[https://www.ellecor.com/?page_id=2|her research and how Folk is following in the footsteps of her hedonic design philosophy to great effect.]]
-  * Omar and Andrés went to SVA event TODO
+    * {{newsletters:michelle-flower.gif}}
-  * TODO: Summarize the rest of the Discord :O
+  * (Andrés) Our friend [[https://www.carolynzhang.com|Kelin Zhang]] [[https://youtube.com/shorts/HS5lRy2krj0?si=JRQkhmalX3DKIPvc|visited]] and we prototyped some stop motion videos!
+    * {{youtube>HS5lRy2krj0?}} {{newsletters:img_5808.jpg?300px}}
+    * Got this comment on YouTube from our collaborator @dpipkin/Daniel Pipkin:
+      * "YouTube's shorts algorithm knows what I want. ❤ Also what the heck is happening at the end?"
+        * For the record, the error was an export issue because I uploaded the video and it looks like it got corrupted at the end because I was posting it while on the subway lol
+  * (Omar) My friends [[https://danwang.co|Dan Wang]] and [[https://www.silvialindtner.com|Silvia Lindtner]] visited the lab -- was fun to talk about makerspaces and culture and discuss future ways to work together, maybe in Ann Arbor...
+    * {{newsletters:img_9927.jpeg?250px}}
+  * Omar and Andrés went to SVA to help [[http://spatialpixel.com|our friends at Spatial Pixel]] celebrate the launch of their new [[https://sva.edu/features/introducing-mfa-interaction-design-chair-adriana-valdez-young|spatial computing lab at SVA]], where they're setting up their Procession system and teaching:
+    * {{newsletters:spatial-pixel-1.mp4}}
+    * {{newsletters:img_0771.jpeg?0x250px}} {{newsletters:img_0766.jpeg?0x250px}} {{newsletters:img_0777.jpeg?0x250px}}
+    * (brought a Folk gadget and got to show off QR scanning a bit as well)
 ==== Discord changes ====
-  * Andrés got a little ambitious and change around the Folk Discord in the last week of May. A summary of the changes follows, DM or email (cwervo@folk.computer) Andrés to request access to the Discord:
+  * Andrés got a little ambitious and changed around the Folk Discord in the last week of May. A summary of the changes follows; DM or email (cwervo@folk.computer) Andrés to request access to the Discord:
     * created the channels:
       * ''#rules'' (which is a special [[https://support.discord.com/hc/en-us/articles/1500000466882-Rules-Screening-FAQ|''Rules Screening'' channel]], it gets a different little icon and everything)
       * ''#ideas'' (previously ''#ideas-and-photos'')
       * ''#links'' ([[https://discord.com/blog/forum-channels-space-for-organized-conversation|a forum channel]] for posting links, currently has the tags:
-        * {{newsletters:screenshot-2025-06-03-at-10.19.52.png?300px | A dark-themed interface displays selectable tags: art, research, craft, newsletter, projectors, and Discord. Art, research, and craft are highlighted; newsletter, projectors, and Discord appear dimmed. }}
+        * {{newsletters:screenshot-2025-06-03-at-10.19.52.png?250px}}
-        * ''#nyc''
+      * ''#nyc''
-          * Andrés **accidentally** un-privated this channel for a few hours on May 29th and unintentionally invited every single person from all around the world into our supposed-to-be-geo-locked-nyc-channel 😅
+        * Andrés **accidentally** un-privated this channel for a few hours on May 29th and unintentionally invited every single person from all around the world into our supposed-to-be-geo-locked-nyc-channel 😅
-            * that said, if you _do_ live in NYC (or would like access to the NYC channel while you're visiting temporarily) DM Andrés (who is the Folk-Discord-czar until further notice...)
+          * that said, if you _do_ live in NYC (or would like access to the NYC channel while you're visiting temporarily) DM Andrés (who is the Folk-Discord-czar until further notice...)
-        * (... need 3-more-0-member-channels before sending ......)
 ===== What we'll be up to in June =====
@@ Line 174: / Line 197: @@
   * **Our next Folk open house is [[https://lu.ma/zwa16ccf|in the evening on Monday, June 30]], in East Williamsburg, Brooklyn.**
   * Omar: make calibration work well in folk2, port some more functionality, finally make pull request?
-  *
+  * Omar: going to [[https://www.gradientretreat.com|Gradient Retreat]] for a week, will probably get some new work in on the gadget finally
+  * Andrés: video support, still need to find a solid couple days to debug the video frame stuff.
 ===== Links we've enjoyed =====
@@ Line 195: / Line 219: @@
   * [[https://www.youtube.com/watch?v=z5XxgxBz3Fo&t=5s|Thinking in Symbols for Universal Design - Benjamin Wilkins (Airbnb)]]
     * {{newsletters:screenshot-2025-06-03-at-05.46.13.png?400px}}
-  * [[https://www.are.na/andres-cuervo/painting-with-code-q9kxwllmpdm|Painting With Code"]]
+  * [[https://www.are.na/andres-cuervo/painting-with-code-q9kxwllmpdm|"Painting With Code"]]