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#flutter

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I have so much mixed feeling about #react. In one hand, I like #jsx. I mean, I really don't like #JavaScript but I like the idea to integrate #HTML and #css so they can be syntax checked instead of a big hard to read string. On the other hand your site is now coming with scripts even if it's just a simple form that could be coded in plane HTML. I learned react to help getting jobs but if it was my own website, I would use something else. I started to check #flutter. I like the idea of having one code that can generate websites, desktop apps and phone apps.

This week in #FDroid (TWIF) is live:

* F-Droid 1.23.0 is now enabled for all, just update!
* Categories galore, 3 now, 20 in total soon!
* Dive into Android development
* More lists of best apps by #izoatetech
* Skip #Gadgetbridge for some devices
* Old #Element #Matrix fixes a CVE
* #Zulip now in #Flutter
+ 6 new apps
& 138 more updates

Scroll by: f-droid.org/2025/06/26/twif.ht

f-droid.orgCategorize this! | F-Droid - Free and Open Source Android App RepositoryThis Week in F-DroidTWIF curated on Thursday, 26 Jun 2025, Week 26F-Droid coreIt comes a moment in the dev life when one needs to take the risk and deem an a...

My elevators on the horizontal stabilizer (my black-gloved hand is touching them) need mass balance to minimize flutter at high speed.

My rudder, also in 1st photo, has the mass balance built into it. There is not enough room to do that for the elevators.

Where to put the mass balance?

The oval hole at the bottom of the vertical fin is an access/inspection point. It goes there.

Note: when the mass balance is 'far away' from the control surface, the control system linking the two should have as little slop (backlash, hysteresis) as possible.
en.wikipedia.org/wiki/Backlash
en.wikipedia.org/wiki/Hysteres

The counterweight is lead shot in thickened epoxy. (I won't melt and cast molten lead!)

The density of lead shot?
en.wikipedia.org/wiki/Sphere_p

Read alt-text for more info.

Info on mass balancing, and a view of my rudder with its integral chunk of lead:
universeodon.com/@KrajciTom/11

Sharing our experiences is important to us! 💎

That's why this week, we're telling you about our experience developing the #PeerTube mobile app.

Today, we published our second and final blog post on the subject! By reading it, you'll discover the steps that made us sweat when trying to publish the app on the Apple Store. 🥵

👉 joinpeertube.org/news/flutter-

JoinPeerTube · Flutter application development: feedback (2/2) | JoinPeerTubeApplication development in Flutter: Publishing to application stores (2/2) Publishing a video streaming application from the Fediverse on various appl...

Glider rudders need a counterweight to be properly balanced.

What?! Aren't airplanes supposed to be light? Why add more weight?

This reduces the tendency toward flutter. (Any airplane, at a high enough speed, will flutter. Don't go that fast.)

An unbalanced rudder (or any flight control surface) will be prone to flutter at slower speeds.

1st photo shows the rudder on a bracket that allows the rudder to freely pivot. (See alt text for more discussion.)

2nd photo shows rudder oriented normally. (See alt text)

en.wikipedia.org/wiki/Aeroelas

Imagine being the test pilot here...deliberately gaining speed to get (just barely) into the flutter regime...surviving, and learning.
youtube.com/watch?v=kQI3AWpTWh

I am not using a control horn to reduce the control pressure I feel on the rudder pedals. Modern gliders typically don't need that.

en.wikipedia.org/wiki/Flight_c

en.wikipedia.org/wiki/Balanced

It legitimately angers me that Google claim any sort of robust #accessibility support in their half-baked #Flutter UI toolkit. From the need for users to manually enable an accessible mode in web apps, to the use of accessible names to convey role information on mobile, to a borderline unusable keyboard experience on Windows, it is a rotten mess throughout.