buibuibui

Please keep an eye open on the website! I will publish a self-hosted version soon.

I am interested to hear what features you guys want in the next iterations! While building ScreenWall, I actually had art installations, home dashboards and train depature info screens in mind. Interacting with the screens and triggering events across other screens is also in the pipeline. Would be cool, if you can give me some crazy ideas, so I can prepare the client runtime better.

This is work in progress project of mine! I have so many ideas how I can make it better, but before I overengineer it just for myself (I think this is typicial engineer mentality), I wanted to submit it to HN before I lose my interest over time, like my other projects…

The account mechanism is just used to scope the devices to „walls“. Otherwise I don‘t mine anything. But I share your sentiment, that this should maybe a self-hostable tool.

I see you. I am thinking about providing a self-hosted version.

An account is necessary to couple your devices to your wall. And auth is implemented via Better-Auth. I stopped Codex immediately when he tried to implement the login stuff from scratch. :)

You can also vibe-code your widget if you want! You are not restricted to use the built-in ones. Just copy the "Canvas Widget Guide" you find under "Left Sidebar > Create > Smart Widget > Tutorial" and copy that article in ChatGPT or Claude while describing what your widget should display.

Then paste the code to "Create > Smart Widget > Edit the Code" in the Widget Details. (this flow should be more intuitive...)

You are able to send JSON data to your widget via an API.

It's all just canvas and old Javascript code!

I like the wall position detection feature via markers! :)

Oh wow, although I submitted it some days ago, I somehow got on the front page! Thanks for that! Also as a note: this platform is nowhere near finished! I had this idea in my mind for a long time that I wanted to reuse my old phones and tablets as displays in my home. I also know that finding the right apps for these old platforms is a challenge in itself, that's why I went the route of creating an ES5 (that nobody writes anymore!) web app that most of these devices still support. The client's whole purpose is to display canvas and media files that the server dictates on-demand via websocket, while keeping a synchronized clock. On Instagram I always saw these very cool widgets like retro clocks, split-flip boards, YouTube subscriber counters that I felt urged to buy. But I thought to myself that the old phones I already have could also do the same. I am a long-time software engineer myself, but could never take the time to validate whether my ideas work. So I thought, why not try it out with Codex. After long prompting, supervising and correcting, I got a very usable solution that I now pleasantly use myself at home.

The oldest device I found that works with ScreenWall as a widget display, is an iPad 3 (2012)!

Working on ScreenWall (https://www.screenwall.app) because I had old phones sitting in a drawer doing nothing, and now I use them as passive widgets on my desk and wall. I use the browsers of the devices to join a shared "wall". From there I can push images, video, gifs, or a synced canvas to it (and any other old screens I add) without installing anything. Started as a one-device hack for my desk clock, but it scales to syncing multiple screens at once if you've got more than one old device lying around.

Can you check if it‘s still the case? :o

I am currently building a project (http://www.screenwall.app) that tries to reuse old phones and tablets (that some people have in the drawer unused) as widget displays. Seeing such cool widgets always tempt me to buy it, although I know that my old Samsung A6 is perfectly capable for such things as well. :D

Very interesting. What's the max payload size we can transfer with this setup?

This solves an issue that I really do have. Will try it out!

How can I start creating Guassian Splat of my environment with my 360 camera? Is it possible to do that with local software?

This is so cool. I have a Insta360 camera lying around. Is it possible to use it to create a Gaussian Splat map with open source software?

This looks interesting. Does it also has desktop sync clients? Didn't read anything in that direction while glancing over.

Hi HN!

Resource Signal brings reactive async data loading to Python. Main idea: declare what parameters affect your request, and get automatic cancellation, status management, and error handling.

It's inspired by Angular's resource() but adapted for Python's async/await. Works great for APIs, database queries, search—anywhere you fetch data based on changing parameters.

The guide has 5 working examples. Would love feedback!

GitHub: https://github.com/buiapp/reaktiv

Is there a best practice how to stream and plot large signal data (e.g. > 1M data points of multiple sine waves) from a Python backend (e.g. numpy + FastAPI) to frontend? My current solution is: fetch ADC data, convert the bytes to base64 and embed it to JSON that will be send to the frontend. Frontend reverses this process and plot it to eCharts.

Oh my, I just looked him up. He is the developer of Virtual Game Station - a PS1 emulator that I used in the past to play PS Isos on my Windows ME PC! What a legend.

Can't wait to tell my boss, I am drinking coffee because I am waiting for my installs to finish! :)

I find the Nextcloud client really buggy on the Mac, especially the VFS integration. The file syncing is also really slow. I switched back to P2P file syncing via Syncthing and Resilio Sync out of frustration.

This could be used for Captcha systems. Would current bots be able to decipher these?

I think the bounciness of the elements is also a very charming characteristic part of the Liquid Glass UI that Apple introduces. But recreating that is probably very difficult with web technologies.

I am suprised that the Galaxy S25 seems so far ahead in the benchmarks.

I actually like their software offerings like Synology Drive and Synology Moments. Their backup solution also seem to "just work" with Hyper Backup. I'm using a Mac und tried to use Nextcloud, but my conclusion with the Nextcloud Desktop Client is, that it is buggy as hell. Especially the VFS implementation. Synology Drive in opposite just works (for me).

The Signals libraries I know of (including reaktiv) are throwing an exception if a dependency cycle is detected in the computation step. But that doesn‘t solve infinite executation loops completely because the user still can define an Effect that updates its (in)direct dependencies - that means User caution is still needed. Angular tried to prevent that in their older versions by not allowing to set other Signals in Effects. But they reverted that decision.

You can use normal names function instead of lambdas if you prefer! In Javascript anonymous functions are used normally for things, where defining named functions are considered too verbose - I use lambdas for that in Python.

The Signals evaluation are topologically ordered and are running synchronously. Effects are running in the order they are defined.

I actually created the library after being exposed to Angular Signals starting from the v16 release. I watched some talks and read articles about Signals, just to know about Ryan Carniato from SolidJS. He did an excellent job teaching the world about Signals!