You select columns and then just drill down to create further joins. Change the SQL text and it updates the view.
I'm a CS undergrad would love feedback.
One of the most interesting applications for LLM's is writing SQL based on a schema, and I wonder if your tool could incorporate a "show me the books titles from authors who's name starts with T" and write that out.
Good luck!
Yes, I agree. Just as we need to check what LLMs produce when writing code, I think this could be a way to check what they produce when trying to write SQL.
As simple and personal as can be. Straight to inbox.
Optimized for coding agents DX through full customization and data appending by url parameters.
https://formvoice.com Appreciate any feedback!
I've been working on an open source LLM proxy that handles the boring stuff. Small SDK, call OpenAI or Anthropic from your frontend, proxy manages secrets/auth/limits/logs.
As far as I know, this is the first way to add LLM features without any backend code at all. Like what Stripe does for payments, Auth0 for auth, Firebase for databases.
It's TypeScript/Node.js with JWT auth with short-lived tokens (SDK auto-handles refresh) and rate limiting. Very limited features right now but we're actively adding more.
Currently adding bring-your-own-auth (Auth0, Clerk, Firebase, Supabase) to lock down the API even more.
https://news.ycombinator.com/item?id=44627910
In lieu of chatbots as the primary means of working with AI.
This is an approach that is human centered and intended to accommodate a wide array of possible use cases where human interaction/engagement is essential for getting work done.
https://demo.snapreceipts.fyi/
Mainly used by my friends right after we have a group lunch or dinner. You just upload a pic of the receipt after a meal and it parses out the items. We assign who got what and it calculates who owes what.
Makes the receipt splitting part super easy.
The goal is to have it behave like typescript for Go, where any Go program would compile out of the box, but then you can use the new syntax.
Featuring: built-in Set/Enum/Tuple/lambda/"error propagation operators"
It also have a working LSP server and generates a sourcemap, so when you get a runtime stacktrace, it gives you the original line in your .agl file as well as the one in the generated .go file.
I recently finish porting all my "advent of code 2024" in AGL -> https://github.com/alaingilbert/agl/tree/master/examples/adv...
When I wrote Go, I figured that I would eventually have to do something like that, to fix the glaring omissions in the language. And then I stopped writing Go, but glad to see that someone got around to it!
After that, I'm not sure. I have four big ideas:
1. (continuation) Another video, this one about my experiences writing a homebrew PSOne game
2. (useful) a command line tool (or native desktop app) that generates white noise
3. (fanciful) See if I can unpack FFVII's world map data into OBJ models and UV mapped textures. And then from there create a 3D world map in Threejs
4. (stretch) I would love an app where I could look out into the distance, and be informed what's on the horizon. Likewise ships in the sea / planes in the sky. I think it's doable with some OSM data, open APIs and a bit of high school math
Been fun to push Nanite and Lumen to the limit!
[0]: https://boris.kourtoukov.com/we-wade-awake-live-visual-perfo...
Earlier today I implemented "bbcodes" for bold, italic, underline, em (grey background color) and strikethrough. They way it works for bold is like this: b[text here]. If you want to apply multiple you can go bui[text here] for example, which would be bold, underline and italic text.
The most important features (for me) are: One Time Payment and 100% local and private. I don't send any data to any server. Just enough to verify license keys.
- Its one time payment, user can import any text, URL or ebooks and use the reader with read along text highlighting or export the audio as mp3 or m4a (audiobook specific format).
- Currently only supports MacOS with Apple Silicon I was doing Windows too but its making development slow, so I'm pausing that for now. - The most recent feature I added is Global Capture where user can setup some hotkeys to import any text and URL. Text parsing and extracting text is one of the hardest part of this. - Also, just added the a Reader view to website. Its goal is to mimic the app featuers as much as the browser limitations allow. I don't have a free Tier but a 7 days money back gurantee.
I mostly have a dev and engineering background but the most exciting aspect of this marketing and those stuff. Still trying to figure that.
I'd be happy to hear any feedback and ideas.
Edit: Only English at the moment. Adding more languages is in my plan but its very difficult for me since I don't know any other languages. But I think it would be great to add those as well.
I'm curious, what on-device text-to-speech engine did you use?
Well, kind of.
I've been working a ton on some variations and ports of it over the last couple months, but the problem is that I need funding.
So my plan is to setup github sponsors, where for each project people want me to work on, they can donate any amount, and for each $25, I'll work one hour on that project. It'll have a few related projects that all come from a unified vision I have for 90s.dev -- to be a full platform that recreates 90s-era development, from dos and qbasic, to win3 and vb3, not to mention assemblers for those who want it (see my show-hn about hram.dev).
The form stays online for 30 days. To keep the forms online for longer, I will be offering paid plans.
Our target platform is a 40 grams tinywhoop so it’s safe to fly everywhere and makes almost no noise :). A Roomba for mosquitoes!
The main plus compared to traditional systems is that a drone can cover an enormous surface in a short time compared to static systems or man-portable insecticide spraying. Our goal is to be competitive with ITNs against Malaria.
Some links :
https://hackaday.com/2025/03/25/supercon-2024-killing-mosqui...
I know of a Dutch company doing something similar. Focusses on pest detecting/mitigation in greenhouses atm: https://www.pats-drones.com/
Insect populations worldwide are experiencing significant declines in both abundance and diversity, with several studies reporting reductions ranging from 40% to 75% over recent decades. Estimates suggest that 5%–10% of all insect species have disappeared in the last 150 years, and some global meta-analyses indicate terrestrial insect populations are declining by close to 9% per decade.
Most effort on https://wheretodrink.beer, collecting and cataloging craft beer venues from around the world. No ambition of being exhaustive, but aiming for a curated and substantial list. Since last month I've added a couple of minor things like maps and "where to go next" sections for each venue.
I'm debating whether or not I should add user accounts, and let people maintain venue bucket lists, venue endorsements. Also planning to reach out to the venues and ask if they agree to monthly or quarterly one-click information verification emails from us.
Other projects that receive less love are:
- https://drnk.beer, a small side project offering beer-related linkpages, and @handles for Bluesky (AT Protocol)
- https://misplacy.com, just a dumb and wrong AI landing page for now but was thinking to work towards a drop-in solution for SMBs around lost/found management.
- A platform for helping voluntary associations with repetitive administrative tasks (non-english so not linking. Trying to rank the pain points currently)
- A platform for structuring national soccer club history (initial brain dump idea phase)
- A platform for structuring writing prompts and collaborative fiction writing (initial brain dump / mockups)
For the next month or so I think I need to prioritize what to focus on after summer
Always interesting to see what others are building and doing. So thanks for sharing!
Also Plex for books (https://www.passagebooks.com/) but that has a much bigger scope.
Had a fun week fixing up the application so it’s 100x faster on 5 different axes, and it’s starting to feel really well polished. Also started to move from reagent to preact/signals in a long slow migration hopefully to hsx.
I also moved the critical algorithm logic into an independent Clojure file that is compiled (and tested) with cherry-cljs — I’m hoping to expand this to ClojErl and jank so I can have isomorphic Clojure code running on the browser, BEAM server, and native swift app :D
It’s getting really close to done, I’m using it now to study 18 different languages, including some really minor ones like Maltese, Welsh, and Cantonese (not sure if Cantonese is really a minor language, but definitely low learner resourced) and it’s easy, slick, and surprisingly effective!
Also, thinking about resurrecting http://opalang.org/. We'll see if I have the energy to work on that.
It's designed for sync, so rather than fetching you can hook it up to a sync engine (any!) to keep your front end in sync with your backend. It's built on Tanstack Query, making the sync engine optional, and a great path for incremental adoption.
The query engine uses a typescript implementation of differential dataflow to enable incremental computation of the live queries - they are very fast to update. This gives you sub ms fine grade reactivity of complex queries (think sql like joins, group by etc).
Having a lot of fun building it!
https://tanstack.com/db/latest https://github.com/TanStack/db
[0] https://apps.apple.com/us/app/reflect-track-anything/id64638...
Encryption uses Fernet (symmetric), and all decryption happens only at point of access. There's no data retention after viewing or expiration. Optional analytics give visibility without compromising identity. Users can get notified when their shared links was accessed by the recipient, and they can set passwords for enhanced security. Limitations include email-based signups and no end-to-end encryption (yet).
You can check it out at = https://www.closedlinks.com/
You can read the white paper here - https://www.closedlinks.com/white-paper/
The idea came to me when we were trying to find ways to manage Terraform secrets , CI vars were a no-go because people sometimes wish to deploy locally for testing stuff, and tools like Vault have honestly been a pain to manage, well, for us at least. So I have been building this tool where the variables are encrypted with `age`, have RBACs around it, and an entire development workflow (run ad-hoc commands, export, templating, etc) that can easily be integrated into any CI/CD alongside local development. We're using this and storing the encrypted secrets in Git now, so everything is version-controlled and can be found in a single place.
Do give it a try. I am open to any questions or suggestions! Interested to know what people think of this. Thanks!
[1]: https://kiln.sh
Appio lets you add mobile widgets and native push notifications to your web app within minutes, without building or maintaining mobile apps, hiring developers, or dealing with app stores. You can try it at: https://demo.appio.so/
If you’re building a web-based product without a mobile app, or just want to try Appio, I’d love to chat! You can reach me directly via https://my.appio.so/ or drop a comment here.
Would love feedback - in open alpha:
www.draftboard.com
GET /hello
|> jq: `{ world: ":)"}`
pipeline getPage =
|> jq: `{ sqlParams: [.params.id | tostring] }`
|> pg: `SELECT * FROM pages WHERE id = $1`
|> jq: `{ team: .data.rows[0] }`
GET /page/:id
|> pipeline: getPage
https://williamcotton.com/articles/introducing-web-pipe
I would love feedback!
The validation piece makes it feel a bit a bit like the Rails mindset for people who work better in FP.
I'd make a could of suggestions for the docs: Maybe a bit more discussion of how we'd test our webpipe code. I see why you've called them 'middlewares' but, maybe the term 'macros' or 'pipeline functions' might avoid confusion with express/connect middlewares
And thanks for the motivation to for figuring out a good way to talk about testing and generally clean up the (very messy) docs.
It’s comments like yours that give someone the drive to continue.
1. Software: An OS that masquerades as simple note taking software.
Goal is to put an end to all the disparate AI bullshit and apps owning our data.
I solved context switching for myself ages ago and now I'm just trying to productize it outside my 3 companies internal usage.
It also solves context switching for AI agents as a byproduct.
2. Ethics: Give Ai and proto-Agi a reason not to kill us all.
An extremely minimal, empirical naturalistic moral framework that is universally binding to all agents so AI won't kill us all. I view the alignment problem as a epistemic moral grounding issue and that the current pseudo utilitarianism isn't cutting it. Divine command, discourse ethics, utilitarianism, deontology they are all insufficient.
On parental leave with my third. We are on month 4 so I have (a bit more) free time in the late evenings after we put the older ones to bed.
It is possible to run Playwright inside a Chrome extension, however, it requires the Chrome DevTools Protocol (CDP) to automate a browser which really hurts the user experience, is very slow, and opens security vulnerabilities. Chrome extension APIs can accomplish maybe ~85% of the same functionality as CDP or Webdriver BiDi -- it isn't complete because of security features which shouldn't be bypassed anyhow. For example, instead of calling a function in a content script with 'script.callFunction' with Webdriver BiDi in Playwright, a function is called with chrome.scripting.executeScript(). It will be 2 or 3 more weeks before I post a PoC.
This is following my work using VSCode's core libraries in a Chrome extension exactly as they are used in an Electron app to drive VSCode and Cursor. The important part is VSCode's IPC / RPC which allows all the execution contexts and remote runtimes to communicate with each other. [0] This solves many problems I have had in the past automating browsers with a Chrome extension.
Atmos Sleep Lamp: A bedside lamp that reduces blue light at night and wakes you up more naturally with light in the morning [1]
[0] https://restfullighting.com/products/bedtime-bulb-v2-preorde...
[1] https://restfullighting.com/products/restful-atmos-preorder
Supports Postgres, MySQL, SQLite, MSSQL, ClickHouse. Includes AI export to generate DDL in any SQL dialect.
17.5k+ GitHub stars, Feedback welcome!
It's an AI video game sprite animator.
Supports deployments of your own apps as well as 15k+ other packages (postgres, airbyte, dagster, etc) via helm charts.
https://github.com/czhu12/canine https://canine.sh
Reason? Got sick of paying for the massive markups on PaaS but missed the simplicity and convenience.
https://www.youtube.com/watch?v=XlolXvBDmRY
Cubic chunks, full lighting engine, opting to be non-deterministic, everything is unsigned integer math except for rotation and rendering, multiplayer is mostly implemented, built to be able to handle heavy simulation.. the foundation work is almost done. Right now it's just a hobby to try to build the best thing I can build. I work on it because it's fun.
https://www.literally.dev/resources/marketing-to-developers-...
Now bootstrapping https://www.minute-master.com - AI formal minute generation for regulated firms primarily in financial services space but also free to use for charities.
It's kinda like Magic Wormhole without typing. It uses iroh for the p2p networking - on both ends, and also in the little web app that you use to scan the QR codes and start the transfer.
It's possible to install with nix and I'm working on other package managers. I'm targeting Linux and Mac.
It has a ticking sound, and the notifications remind you to stay hydrated, stretch and walk. I've used many different Pomodoro and I'm trying to consolidate the features I like the most from each.
Right now it works quite well on Linux and it should work on Mac.
Recently I also made a font for it! https://untested.sonnet.io/notes/433-how-to-make-a-font-that...
I'm also thinking about organising the usage patters, because over the past few years I've collected a few interesting groups: mental health focussed users, script writers, neurospicy folks, bloggers, squirrel enthusiasts. I'm thinking about this here: https://untested.sonnet.io/notes/how-people-use-enso/
Since we added MCP and the use of structured output to "spill" multiple return values into adjecent cells, it is the quickest way I know of to monitor competitors blogs everyday before my 09:00 meeting. And also the quickest way I know of to test new AI models. I have a sheet with SimpleQA, MMLUPro, or GPQA Diamond and testing a new model is a matter of adding a new column. The whole idea is to enable normal people (like, non-techies) to automate manual, repetitive tasks with AI like programmers routinely do.
You can at least play some games now though:
https://housepriceguess.com/roundup/v/holiday-destinations/p...
Enjoy. And yes that really was my wife playing one of the games for the first time in the video ;)
Last month I decided to take a subscription of my own for Claude Code to use in my personal time mostly for practice and educational purposes.
So the past few weekends and the occasional week night I've been vibe-coding a game for iOS/MacOS using Swift and SpriteKit.
I have some experience with Swift previously but not at work, so it's extremely experimental for me. However it's been going pretty well. Most of the hang-ups are Xcode configuration issues.
It's interesting to poke Claude a bit and discover what it's actually decent at and awful at.
Gameplay mechanics-wise it's been able to implement things as requested generally without problems.
UI elements like menu screens and such it has been almost completely unable to do no matter what prompt I give to it.
It's safe to say I would never call the codebase professional quality. However, the base game has been implemented well enough to play without bugs and I've been solidly impressed.
The other issue I've had is if I want to change project/target/build settings, Xcode doesn't provide an easy way to do so. You need to poke around the UI to find where these settings and file relationships are set and change them that way.
There's a project file that I believe contains them all but it's not intuitive to modify by hand.
I'll still need to implement some kind of "AI" opponent or hack together P2P networking to demo it though; playing against yourself is fine for testing, but not really how the game is meant to be played.
It's hand coded so far, but I'm hoping AI can be a big lift for churning out the multiple thousands of named special rules, as most of these are very simple (+1 here, reroll there, etc).
Any WH40k players out there? Love to hear your thoughts!
This is the first time I've ever actually released something with a monetization option, so I'll be interested to see where it goes. It's a small enough niche that I think I have several features that genuinely don't exist anyplace else, like the ability to lemmatize even heavily inflected words (a very common stumbling block for learners of Finnish).
A web app would obviously be much easier to monetize, but then I would lose the buttery smooth feel of the search at it currently exists.
Tsemppiä! It's not live yet, but when it is it will be at https://taskusanakirja.com/.
It makes answering customer emails 10x easier.
The magic are training templates which are templates that get suggested (and eventually auto-selected) and personalized by LLM for every reply.
Every reply sent trains it to auto select that training template for future similar customer emails.
The stack is Ruby on Rails and Postgres hosted on DigitalOcean. The LLM currently is Kimi K2 hosted on Groq.
For now, it only has a daily newsletter fully compiled by AI agents without any human intervention. I plan to add public listed companies (semiconductor, energy provider, etc) onto the platform. Already found lots of good data points that can be used by analysts, researchers or observers.
https://www.inclusivecolors.com/
Example with colors from HN to play with (grey from links and the main body color, orange from the logo, green from newbie usernames): https://www.inclusivecolors.com/?style_dictionary=eyJjb2xvci...
The main features are it shows if your colors meet WCAG accessible contrast on a live UI mockup, you get quick and precise control over every color grade in a swatch (via editing HSL curves) instead of these being auto/AI generated, and it helps you create a full palette of swatches rather than just a handful of colors without tints/shades.
The idea here is to design your tints/shades upfront with accessible contrast in mind so you don't run into problems later. Most brand style guides I see only have about 5 to 10 brand colors, and when you need more tints/shades later to implement actual UIs and landing pages, you get into a conflict where you can't find contrasting colors to introduce that match the brand.
I've had interesting feedback about different workflows designers have so far. It's tricky to make a single tool that fits everyones workflow so I might end up with multiple modes e.g. easy but more opinionated, and more freeform but for advanced users.
You can use the CSS export in regular CSS projects directly e.g. via `color: var(--red-900)`, or something like `--bs-danger: var(--red-500)` for Bootstrap projects with semantic naming. The same export format works for Tailwind too because since version 4, Tailwind is mostly configured via CSS variables now.
I probably need to make this more obvious, but if all your swatches have the linked/shared lightness option set, you can pick lightnesses where all grade 500 colors contrast against all grade 100 colors, all grade 600 colors contrast against all grade 200 colors etc. so when you're picking colors in CSS, you know by design which colors will contrast without having to go check them.
I am using cerebras for book translations and verb extraction and all LLM related tasks. For TTS I am using cartesia. I have played around with Elevenlabs and they have slightly natural sounding TTS but their pricing is too steep for this project. Books would cost a couple of hundred euros to process.
Idea is to add a lot more NSFW stuff like sexy avatars and mocap animations, cinematic controls, even a marketplace of content and assets.
(Built for fun as I optimized my daily spending to get a year's worth of flights for free and friends wanted it haha)
First game in progress https://reprobate.site
Any feedback is welcome!
https://github.com/bugthesystem/Flux
Flux is a high-performance message transport library for Rust that implements patterns inspired by LMAX Disruptor and Aeron. It provides lock-free inter-process communication (IPC), UDP transport, and reliable UDP with optimized memory management for applications with low latency requirements.
This week I’ve been working on predicting upcoming paychecks with Nodejs so we can automatically decide how much funds to move into your budgets when you get paid. I pull the past 3 months of transaction data from our Postgres database using Prisma and run some analysis.
People think syncing and delayed transaction data is normal, and I’m working on changing that by having the budgeting built in to the checking account. Along with a high yield savings account, goal envelopes, bill envelopes, etc, joint accounts, etc.
The app is designed for older adults who enjoy reminiscing but struggle to organize their thoughts into a coherent narrative. The goal is to preserve their hard-won insights and pass them down—to family members who may be too busy to ask the right questions now, and to future generations who would otherwise never hear these stories.
I have a working prototype that allows me to test the interview flow, and I’ll soon be sharing it with friends and family for initial feedback. I’m now looking for a designer to collaborate on the next phase.
Design will be a critical part of this app. The way stories are visually presented will be central to the user experience and will likely determine the app’s success. If you’re a designer interested in this kind of work, I’d love to hear from you. Given the text-heavy nature of the app, experience with typography and content-focused design will be especially valuable.
Early Access for a new terminal emulator [0] bringing dead text to life. It's my professional dream to evolve our conception of terminals without bringing in the bloat of, say, electron (read: staying native).
>Do you have any new ideas you're thinking about?
I like the thought of dropping you into the terminal right on the browser. It wouldn't be the real thing, but having a toy to play with is often superior to dry docs.
Everyone knows reading is the best way to build vocabulary, but many avoid it and turn to flashcards or spaced repetition because long texts can feel overwhelming, and they often have to refer to a dictionary.
This app gives users short, engaging passages focused on comprehension. While reading, users guess word meanings from context and find out whether they got it right by answering a few questions below. I believe this will be helpful for people who haven’t had much success with popular vocabulary learning methods.
I shared it on HN earlier (https://news.ycombinator.com/item?id=44543063), but it didn’t get much attention. If you're interested in novel learning methods or vocabulary, I’d love your feedback.
P.S. Login is required since the app uses LLMs to generate interesting passages. You can register with any non-existent email if privacy is a concern.
Part of another odd project, and testing how long the material holds up. =3
The game is mostly done, so I'm now focused on tooling to make it easier for me to craft each week's puzzle. I'm solving some interesting graph and optimizations problems
After working on and using many MCP servers, I hit couple of issues multiple times:
* Do I configure 2 MCP servers of same type for 2 different API Keys or do I manually update configurations all the time? (e.g. production and development environments)
* when I have too many tools enabled, I noticed that either I am hitting context limit too quickly or LLM is hallucinating when choosing a right tool
* Some MCP servers expose a lot of tools, I want to disable some of them forever, instead of doing configuration per AI assistant (first for Claude, then Cursor and so on)
* Most MCP servers are hosted by third parties, as a privacy conscious person, I do not want to share my credentials with third parties.
And I am building Aiko - AI tools marketplace: https://getaiko.app
NOTE: Gmail and Calendar apps are currently under CASA Tier 2 security assessment, hence not published to production. But you can see demo usage here: https://www.youtube.com/watch?v=ZgEy6Y1kfn4
Firstly a DevManual - for “any” software team/IT dept - how to think about the philosophy, history and practise of basically everything - release management, backup and recovery or IAM and security and marketing-by-engineering or CSS
It’s kind of “this much I know” and a working docker based OSS “software team in a box”
And the second one is really expanding on the philosophy - how software is changing companies and how democracy works with software
https://github.com/turbolytics/sql-flow
Building a company around a tool is hard. There's been some interest but streaming is kind of commoditized.
I'm taking everything I learned building it and working on a customer-facing security product, more to come on that :)
I also used the tool to generate an Adult Chess improvers FIDE rank list for all federations around the world. Here are the July 2025 rankings though it still needs major improvements in filtering - https://chess-ranking.pages.dev
------------------
Another idea that I have been working on for sometime is connecting my Gmail which is a source of truth for all financial, travel, personal related stuff to a LLM that can do isolated code execution to generate beautiful infographics, charts, etc. on my travels, spending patterns. The idea is to do local processing on my emails while generating the actual queries blindly using a powerful remote LLM by only providing a schema and an emails 'fingerprint' kind of file that gives the LLM a sense of what country, region, interests we might be talking about without actually transmitting personal data. The level of privacy of the 'fingerprint' vs the quality of queries generated is something I have been very confused with.
- Live PDF preview
- 100% client-side
- No sign-up required
- Includes a Stripe-style invoice template
- Built with modern web tech – simple to self-host or fork
Repo: https://github.com/VladSez/easy-invoice-pdf
Demo: https://easyinvoicepdf.com
Would love feedback, contributions, or ideas for other templates/features!
https://github.com/scallyw4g/bonsai
I also wrote a metaprogramming language which generates a lot of the editor UI for the engine. It's a bespoke C parser that supports a small subset of C++, which is exposed to the user through a 'scripting-like' language you embed directly in your source files. I wrote it as a replacement for C++ templates and in my completely unbiased opinion it is WAY better.
I'm 97% certain this is because the faster code leads to more page thrashing in the mmap-based index readers. I'm gonna have to implement my own buffer pool and manage my reads directly like that vexatious paper[1] said all along.
[1] https://db.cs.cmu.edu/papers/2022/cidr2022-p13-crotty.pdf
You make it sound like I was trying to troll everyone when we wrote that paper. We were warning you.
It’s been a journey but getting close to launching our first version to pilot customers in August. We use an enormous amounts of AI tokens every month to extract data not possible with any traditional player in this media monitoring space. Benchmarking competitors, tracking impactful discussions, and actionable brand insights.
If you are currently using one of the big media monitoring companies, I’d love to chat!
https://github.com/rush86999/atom
Check it out.
Soon approaching a 1.0 release for sanctum once I get my brain out of vacation mode and into hacking mode again. A lot has happened this year and I am excited.
I will be talking about how sanctum and its cathedrals work at sec-t 2025 [2] so in full swing working on the demos and presentation.
check it out: https://mixpeek.com
Most recently, I've been incorporating a lot of improved UX design. The app has always used a playlist metaphor, i.e. your database of flashcards is your library and you can sort them in different ways and then hit Play to start reviewing. Within the review session itself, you go through the cards in the playlist in small batches so that it's less overwhelming, among other reasons. After every batch, the app returns to an overview screen so you can see what you've just reviewed so far in the session.
The challenge has been designing this overview screen so it's clear where you are in the playlist without making it overwhelming. I finally came up with a good design this week, which I was quite happy with: https://mastodon.social/@allenu/114921335089371494
I've been pleasantly surprised at how much of an improvement this new UI has made on how the product feels. The old UI only showed you the history of cards you've reviewed in the session and highlighted the most recent batch of cards. This new one shows you the full playlist, but redacts the contents of the playlist ahead, so you immediately get a sense of how much left there is to do, but without being shown what is in the contents of the cards. Interestingly, this has the effect of making you want to see what is in those cards, i.e. to keep reviewing!
It calculates optimal ways to load boxes into trucks or containers, considering stacking rules, fragility, and real-world constraints. You can drag boxes like 3D Tetris or upload photos to auto-estimate item dimensions. Recently added: batch-wise guided loading for warehouse use cases.
We're at ~$400 MRR and just opened up a 14-day free trial. Feedback, trials, and intros to logistics folks welcome.
Would love feedback, contributions, or ideas for other templates/features!
Absorbing low (male voice; 80Hz - 300Hz, not including overtones) frequencies normally takes a fair bit of dampening material, unless something like a Helmholtz resonator [1] is used. The paper shows that a ~100x100x12mm 3D printed Helmholtz resonator may entirely absorb 125.8Hz (in an extremely narrow band). I'm uncertain about transmission losses (i.e. volume of the frequency perceived behind the material).
So far, I have created/vibe-coded a script to take the inputs: frequency and tile dimension (it's square). The output is a 3D object (.stl) which can be printed.
Today I tested my 3D model, which roughly resembles the model in the paper (1mm roof & floor as opposed to 0.2mm, because of printing difficulties), by using a DIY'D impedance tube and publicly available software [2]. The print was meant to be tuned at 125Hz, but results showed 131Hz and absorption factor of ~0.42 (lower number as opposed to 1.0 may be due to inexperience with all of this; it may be due to an imperfect test setup).
My impedance tube is made from 96mm (inner) diameter PVC tube, a Visaton KT 100 V 4 Ohms speaker, an amplifier, Motu M2 audio interface, 2 Behringer ECM8000 measurement mics and some 3D printed adapters (to hold the speaker and sample).
Nothing to concretely publicise or share so far, but am thoroughly enjoying the process of digging into a field (acoustics) completely new to me, solely out necessity and/or frustration in the workplace.
Should anyone be interested, I will share my project with HN once it has progressed to where I have something written up or worth sharing.
[0] http://dx.doi.org/10.1063/1.4941338 [1] https://en.m.wikipedia.org/wiki/Helmholtz_resonance [2] https://mathworks.com/matlabcentral/fileexchange/931
Unlike its competitors, it uses proven research and techniques to measure the issues, as well as the improvements.
https://groundme.app/what-is-ground-me
Test users and early adapters are very welcome
mmarian•2h ago
Might start doing a few posts on Cloudflare WAF as I've been working with it extensively lately. Maybe it'll help me uncover some startup ideas in that space.