Migrating all personal devices and infrastructure (homelab, digital ocean droplets, hetzner) to nix and nixOS.
Ask HN: What are you working on? (July 2025)
351–360 of 900 posts
Re: Ask HN: What are you working on? (July 2025)
#352We're french engineers/designers working on building repairable ebike batteries! We just released our first B2C model, check it out at https://gouach.com :)
awesome project!
Re: Ask HN: What are you working on? (July 2025)
#353I'm trying to integrate Meshtastic devices with the Signal K marine software ecosystem.
The idea is to facilitate communications between ship and the shore party, as well as to have alerts, some commands ("boat, turn deck light on") without reliance on telecommunications infrastructure.
Down the line communication and telemetry sharing between different vessels is also potentially interesting.
Re: Ask HN: What are you working on? (July 2025)
#354Still working on https://phrasing.app - an app for polyglots to learn over 120 languages in the most effective manner and a beautiful UI. Just finished a onboarding flow, now updating the search and create experience to fall more in line with actual usage from users, then hopefully prepping for a more public launch :) Had a fun week fixing up the application so it’s 100x faster on 5 different axes, and it’s starting…
I've been learning languages for almost 10 years now but your site UI is unusable on mobile
Re: Ask HN: What are you working on? (July 2025)
#355Almost ready to launch an all-in-one platform for solving problems I face all the time at work, with clients and my own sites.
Frustrated with running 10+ different checks on domains/websites I've built or working on with 10+ different services, I've built - with help from Claude Code - a Django app that tries to wrap all those key checks into one place. On top of that, I've built in scheduled monitoring and alerting.
It's been a great experience learning about the intricacies and nuances in different website set-ups, the complexities in avoiding false negatives, fun with CloudFlare workers, agentic coding and much more.
The site is still running off a RPi (Coolify) in my home-server behind a CF Tunnel at the moment, so won't link directly here - but ping me if you want to give it a test-run.
Re: Ask HN: What are you working on? (July 2025)
#356Currently working on a tool for creative workflow automation called runchat.app with the goal of giving creatives more control over gen ai. Its a jeckyl and hyde visual canvas that can be used for open ended exploration and experimentation with models on fal as well as automation of things like image processing or web scraping. Something weve been thinking about lately is the idea of ephemeral interfaces and how the ui of runchat can be generated on the fly to suit a specific design task. This makes it possible to vibe code workflows from self contained modular react components - something llms are really good at.
Re: Ask HN: What are you working on? (July 2025)
#357I'm continuing the work on Cellm, an Excel extension that let's you call LLMs in cell formulas like =PROMPT(A1, "Rate the sentiment of the customer feedback as positive, neutral, or negative"), and then drag the formula down to apply the same prompt to thousands of rows. I built it after my girlfriend had to manually classify 7,500 research papers. Cellm automates that kind of repetitive work. Since we added MCP and…
Somewhat similar is https://paradigmai.com.
Re: Ask HN: What are you working on? (July 2025)
#358I often need a PostgreSQL server for testing an application, vibe coding, or troubleshooting a PG client. Inspired by Neon's architecture, I implemented PostgreSQL WASM (PGlite) with a cloud proxy (via Websockets) at https://postgresql.dbfor.dev
All the PostgreSQL data lives in your browser, and you have unlimited PostgreSQL servers that persist the data locally without installing anything.
Re: Ask HN: What are you working on? (July 2025)
#359I just discovered the formulas Excel library for Python, and I have about two dozen ideas for things that you could do with it. It turns out they already implemented the first dozen in the library itself, but the possibilities that come from extracting the computational graph out of a workbook are huge.
Re: Ask HN: What are you working on? (July 2025)
#360I’m building Popgot (https://popgot.com): compare unit prices (per oz/sheet/lb) across Costco, Walmart, Target, and Amazon. We normalize fuzzy sizes (“family,” “mega,” multipacks) so you see the actually cheapest option for staples.
New: a deep research mode that, on demand, crawls thousands of product pages and uses visual LLMs to read label photos (ingredients, counts, square footage) when the text is messy. First run takes ~60–90s, then it’s cached.
A good torture test: 20×25×1 MERV 13 home air filters—listings mix single/4/6/12-packs and vague claims (“3-month,” “allergen defense”), which wreck per-unit comparisons. I’d love feedback on misses (coupons/Subscribe & Save/region), categories to add, and to collaborate with a grocery-list app, budgeting tool, or anyone in the frugal/deals space. chris@popgot.com