Hacker News: lawik

Injecting Tracing the Hot Way

lawik — Thu, 26 Mar 2026 05:12:41 +0000

Article URL: https://underjord.io/injecting-tracing-the-hot-way.html

Comments URL: https://news.ycombinator.com/item?id=47526834

Points: 3

# Comments: 0

New comment by lawik in "Our commitment to Windows quality"

lawik — Fri, 20 Mar 2026 22:07:07 +0000

The cadence these topics were written in was so Apple keynote video that I had Tim Cook's voice presenting it in my head. I hope that's not just me.

More in the topic. Good that Windows Update will suck less. Did the Discover-something-or-other-imply less start-memu ads, I couldn't tell..

Shipping grayscale photos at small scale

lawik — Mon, 09 Mar 2026 07:21:20 +0000

Article URL: https://underjord.io/shipping-grayscale-photos-at-small-scale.html

Comments URL: https://news.ycombinator.com/item?id=47305776

Points: 2

# Comments: 0

I juggle embedded projects (2021)

lawik — Sat, 07 Mar 2026 07:27:00 +0000

Article URL: https://jaycarlson.net/2021/09/18/juggle-embedded-projects-home-office-workspace-tour/

Comments URL: https://news.ycombinator.com/item?id=47285349

Points: 2

# Comments: 0

My first steps in public speaking and how you can do it

lawik — Sat, 14 Feb 2026 07:38:13 +0000

Article URL: https://anita219.github.io/My-first-steps-in-public-speaking-and-how-you-can-do-it,-too

Comments URL: https://news.ycombinator.com/item?id=47012496

Points: 1

# Comments: 0

New comment by lawik in "Oban, the job processing framework from Elixir, has come to Python"

lawik — Thu, 29 Jan 2026 06:36:35 +0000

I believe the OSS part of this oban library covers a lot of the celery feature set and is free as well. You can run multiple nodes and knock yourself out without needing more infra than the existing postgres.

Oban has been a free and OSS project in Elixir for ages. There are some more advanced bits that are paid and that sustains the people that make it.

If you like Celery. Great. This is a different take. I didn't enjoy celery last I needed it but never got super familiar.

New comment by lawik in "Oban, the job processing framework from Elixir, has come to Python"

lawik — Thu, 29 Jan 2026 06:27:15 +0000

Not necessarily easy to do performantly, scalably and well. Oban has been doing this in Elixir at real scale for a decent while now.

Why do you need a tool? Well. You say celery. I am inclined to say Oban. And I'd say both are tools.

Beam Bots – Resilient Robotics

lawik — Wed, 21 Jan 2026 20:59:24 +0000

Article URL: https://beambots.dev/

Comments URL: https://news.ycombinator.com/item?id=46711481

Points: 5

# Comments: 0

Goatmire Elixir 2026 Announced

lawik — Wed, 14 Jan 2026 08:21:59 +0000

Article URL: https://underjord.io/goatmire-2-announced.html

Comments URL: https://news.ycombinator.com/item?id=46613627

Points: 1

# Comments: 0

New comment by lawik in "The Arduino Uno Q is a weird hybrid SBC"

lawik — Mon, 03 Nov 2025 09:48:34 +0000

I wonder if the limitation of the application processor and Linux starting is mostly a default for the standard OS or an actual limitation. Typically with a hybrid SoC like this part of the point is that you can use the micro-controller as the power efficient thing that decides when the bigger application processor should boot or not. I'd be curious to see if that's possible with this one.

Shipping only Debian to start is fine by me. It has to start somewhere. And they seem quite responsive to making it work with other things. James Harton is plugging away at getting it working with Nerves (https://nerves-project.org) and he has it running with Buildroot already. Current repo: https://github.com/jimsynz/buildroot

Most recently they pushed their special sauce for the bootloader and how to produce the relevant mystery binaries. https://forum.arduino.cc/t/buildroot-support-for-uno-q/14108...

I share the sentiment that I don't trust that there won't be issues with Qualcomm over time. That company does have some pretty relevant chips though so I'm hopeful this means that we see them become more accessible on SBCs and embedded boards. I feel like they've been popping up more and more.

If they value this investment in Arduino they should now have a small wing of the company that pushes for things to be more open and even if they only consider that a marketing vector, if things are opened up for that purpose, quite possibly a win. But Arduino might also be absorbed into the amorphous megablob and this is the last we see. I hope not.

I don't think this board is that weird. It is just coming from the Arduino side and moving into Raspberry Pi territory. Personally I want to run Nerves on the application processor and get some practice with Zephyr on the MCU. Seems to already be supported: https://docs.zephyrproject.org/latest/boards/arduino/uno_q/d...

Also why no mention of the LED matrix. This is something RPi devices fail at. Providing som default way of neat output. First time plugging this in it starts doing fun stuff.

New comment by lawik in "Power over Ethernet (PoE) basics and beyond"

lawik — Wed, 22 Oct 2025 19:24:00 +0000

It seems to be RJ11 and they might be spec:ed slightly differently (thicker leads?) to power motors. I get the impression it is mainly to control what can be used in competitions.

This was what I found from skimming around: https://www.robotevents.com/V5RC/2018-2019/QA/35

I doubt it is Ethernet at all, so it wouldn't be Power-over-Ethernet. Just some useful connectors and wires making for an appropriate cable. Also seems like you can make your own perfectly fine. Or they might melt. I suppose try it.

New comment by lawik in "Kurt Got Got"

lawik — Thu, 09 Oct 2025 04:36:41 +0000

Funny!

Now that Kurt doesn't have commit access, who do I ask to get internal Fly Slack bot fizz off of my behind.

I was in a devrel channel for a short while and ever since it has asked me to write updates in a channel I don't have access to. Frequently.

Livebook – Code Notebooks on Elixir

lawik — Sun, 07 Sep 2025 20:31:30 +0000

Article URL: https://livebook.dev/

Comments URL: https://news.ycombinator.com/item?id=45161854

Points: 2

# Comments: 0

Flutter on Embedded Linux Devices with Elixir

lawik — Sun, 07 Sep 2025 20:30:24 +0000

Article URL: https://hexdocs.pm/nerves_flutter_support/readme.html

Comments URL: https://news.ycombinator.com/item?id=45161841

Points: 2

# Comments: 0

Commanded – Event Sourcing and CQRS with Elixir

lawik — Sun, 07 Sep 2025 20:28:31 +0000

Article URL: https://hexdocs.pm/commanded/Commanded.html

Comments URL: https://news.ycombinator.com/item?id=45161829

Points: 2

# Comments: 0

Interoperability in 2025: Beyond the Erlang VM

lawik — Mon, 18 Aug 2025 21:17:05 +0000

Article URL: https://elixir-lang.org/blog/2025/08/18/interop-and-portability/

Comments URL: https://news.ycombinator.com/item?id=44945434

Points: 2

# Comments: 0

New comment by lawik in "White House in Talks with Intel for 10% U.S. Government Stake"

lawik — Mon, 18 Aug 2025 20:25:02 +0000

I think Intel wants to stay alive so they are looking for a lifeline and the current administration wants to bring chip production into the US.

Intel's death would be very embarassing to that whole effort. So Intel has incentives (survival) and the administration has incentives (jobs in the US). The method is "whatever can be claimed as a win".

No US party seems particularly capable or keen to hold an ideological line but especially not the GOP from what I've seen. Not saying other countries have particularly impressive parties either. I'm less than thrilled with ours over here.

New comment by lawik in "I let LLMs write an Elixir NIF in C; it mostly worked"

lawik — Fri, 15 Aug 2025 18:04:20 +0000

I've done this. The NIF worked as in that it ran and was a correct enough NIF. It did not work in terms of solving what I needed it to do. Iteration was a bit painful because it was tangled with a nasty library that needed to be cross-compiled. So when I made a change it seg faulted and I bailed.

I essentially ran out of patience and tried another approach. It involved an LLM running C code so I could check the library output compared to my implementation to make sure it was byte-for-byte.

The C will never ship. I don't have practice writing C so I am very inefficient at it. I read it okay. LLMs are pretty decent help for this type of scrap code.

New comment by lawik in "FFmpeg 8.0 adds Whisper support"

lawik — Wed, 13 Aug 2025 10:40:54 +0000

I wonder if they'll be satisfied there or add a chunk of others now that they've started. Parakeet is supposed to be good?

Should they add Voice Activity Detection? Are these separate filters or just making the whisper filter more fancy?

New comment by lawik in "Booting 5000 Erlangs on Ampere One 192-core"

lawik — Tue, 12 Aug 2025 12:11:29 +0000

I will consider it :)