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jpettersson

66 karma · joined August 28, 2011

Senior Engineering Manager @ voi.com

https://github.com/jpettersson

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jpettersson··on Show HN: SolidCraft – Open-Source Parametric CAD in Rust (With MCP Support)
Thanks for making this! I tried some hobby level modelling and it seems very capable. I've been a heavy user of fusion360 in the past but I've been longing for an open alternative.
jpettersson··on Ask HN: Why were OpenAI, Claude, and Grok simultaneously down?
It isn't done — and what's there is more interesting than expected.
jpettersson··on Multiplayer: Share tmux sessions (Claude Code, etc.) over LAN and the internet
Hello!

This is a quick hack, not a company ;) At work we've been huddling around Claude Code a lot recently, so I made this tool to make it more fun. It makes it easy to create and share tmux session over local networks and across the internet via a GCP jump host.

It works like this:

LAN: The host side generates SSH keys that are restricted to a specific tmux session. It prints a join token that the participants can use to join the tmux session.

Internet: The host and collaborators needs to have access to the same GCP project where a small VM acts as a SSH jump host. Otherwise the flow is identical to the LAN flow.

PRs welcome!

Happy collaborative hacking!

jpettersson··on Building an E-Ink Laptop
I had the same thought. Found this after a quick search: https://github.com/tommythorn/Paperlike-Raspberry-Pi-4
jpettersson··on FreeCAD: A free and open source multiplatform 3D parametric modeler
wow, thanks for getting my attention to CadQuery. It looks really promising! It has some of the things I've come to depend on in Fusion 360 which makes it hard to go back to OpenSCAD: workplanes, construction geometry, fillets, etc
jpettersson··on Ask HN: Who is hiring? (June 2020)
ekspono | Full-stack, Frontend | Clojure | Stockholm, Sweden or REMOTE in EU | full-time

ekspono is an early stage fintech company founded by a team of experienced technology and finance professionals. Our first mission is to increase transparency and ease of business for quantitative index strategies. Our product is a web based index analytics platform that helps our clients (institutional investors such as pension funds) manage portfolios that span across multiple index providers (banks).

We’re looking to expand our team with talented Software Engineers who are excited about building a SaaS product using Clojure. We’re considering both candidates who are experienced with Clojure as well as candidates who are experienced in other languages and who want to make the transition to working commercially with Clojure(Script).

* Experienced Software Engineer - Full-stack (system design, data model, API services, web applications, infrastructure, data pipeline automation)

* Experienced Software Engineer - Frontend (web applications, data visualizations, API services)

Our stack: Clojure, ClojureScript, Python 3 (data pipelines / calculations), postgres, kubernetes

We’re a small company (4 today) so every team member has the responsibilities and autonomy to drive progress in their area of expertise.

We are primarily looking for full-time arrangements, but for the right person we can be flexible. We can offer employment in Sweden and are open for long term contracts or similar arrangements in other European locations.

If you’re curious, contact us at: people@ekspono.com

jpettersson··on Show HN: Obsidian – A knowledge base that works on local Markdown files
The app looks promising!

If I understand the license correctly there's no way of trying it out for free in a commercial setting. The only use-case I would have for this is as a work tool, but since the license requires me to pay up front I'm not going to try it. A trial period or similar would be nice.

jpettersson··on Show HN: Secure token authentication for Angular.js and Rails
Well done! I was working on a similar thing but will check this out instead.

I saw that you are planning on providing examples. It would be very nice with an example of a rails app with the angular app integrated.

jpettersson··on Basic Concepts of High Availability Linux
Great overview of the basic concepts, thanks!
jpettersson··on Visualization: pathfinding algorithms
Very cool!
jpettersson··on Show HN: my new app Timebar has a clever UI (I think)
Great work! This will be my first attempt at a timer based approach to task management. I've been meaning to give it a try for a while and this UI was just too neat to not try.
jpettersson··on Chrome Inspector Detector
Great for easter eggs!
jpettersson··on Debuggex: A visual regex debugger
This is amazing. Thank you very much!
jpettersson··on RethinkDB: An open-source distributed database built with love over three years
Wow, looks great! I'm excited to try it out.

The Github graphs are really interesting too, that's a lot of love/work right there!

https://github.com/rethinkdb/rethinkdb/graphs/impact

jpettersson··on Show HN: A status dashboard for the NYC power grid
Ah... I accidentally rounded to zero decimal places. Looks better now.
jpettersson··on Show HN: A status dashboard for the NYC power grid
The ConEd data is a nested set of areas where each Area the fields: total_customers, customers_out. It seems there's a discrepancy between the number of customers_out for Manhattan and the sum of customers_out for Manhattans's sub areas.

I've decided to trust the sum of the individual sub areas instead, working on a fix.

jpettersson··on Show HN: A status dashboard for the NYC power grid
It's interesting indeed. As of right now it looks like only Manhattan has seen drastic improvements. I hope you get your power back sooner than the 9th!

The coned gem (now https://github.com/ckundo/sandy) is craping data from the official Coned storm central site.

(Thanks, I fixed the typo. As a native Swedish speaker borough is one of those words that make no sense.)