Martijn Braam

Opensource software developer for OpenSwitcher. Sometimes makes some random hardware.

Slowly getting closer to being a full time FOSS developer :D

Blog: https://blog.brixit.nl/
Patreon: https://www.patreon.com/martijnbraam
Liberapay: https://liberapay.com/MartijnBraam/
Peertube: https://spacepub.space/c/martijnbraam/videos

Public Key

npub1r3zf273rgsktvc7twg8hm52u824ezafkp442lpwsyyd2u9qnmqts2s03cf

NIP-05 Address

[email protected]

Profile Code

nprofile1qqspc3y40g35gt9kv09hyrma69wr42u3w5mq6640shgzzx4wzsfas9cpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsjgtc6j

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1r3zf273rgsktvc7twg8hm52u824ezafkp442lpwsyyd2u9qnmqts2s03cf

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Last Notes

2026-06-29 10:39:45 UTC

Eeeeh no? what the fuck patreon.
https://cdn.fosstodon.org/media_attachments/files/116/832/963/766/565/506/original/6c7f42e783c86809.png

2026-06-11 13:43:37 UTC

Ah yes, my two security cameras according to home assistant
https://cdn.fosstodon.org/media_attachments/files/116/731/765/567/375/996/original/eec240847b957a9c.png

2026-06-10 16:22:15 UTC

It's pretty annoying to get a decent PIR sensor for home assistant, nothing a soldering iron can't fix...
https://cdn.fosstodon.org/media_attachments/files/116/726/725/987/978/434/original/f062104be69a3b33.jpg
https://cdn.fosstodon.org/media_attachments/files/116/726/726/250/221/265/original/aa0a9f1a84859c6a.jpg

2026-06-10 14:16:33 UTC

Oh haha, google is putting ads for chrome in the youtube frontpage now...

2026-06-08 13:53:42 UTC

Sure we have resistors at home
https://cdn.fosstodon.org/media_attachments/files/116/714/819/481/128/777/original/456dcf76c23bd549.jpg

2026-06-05 17:33:09 UTC

Finished my battery pack clone...
This is not really a good idea, but it works so I made a blog post :)
https://blog.brixit.nl/cloning-a-sennheiser-ba2015-accu-pack/

2026-06-04 17:22:34 UTC

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Nailed the dimensions now. Time to destroy the original for science
https://cdn.fosstodon.org/media_attachments/files/116/692/990/654/778/972/original/8f6d9784ca7c64df.jpg

2026-06-04 15:27:51 UTC

Committing piracy
https://cdn.fosstodon.org/media_attachments/files/116/692/538/648/802/100/original/5a8e7f5913c4c53a.jpg

2026-06-03 21:51:56 UTC

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https://factorio.com/galaxy/Sulfur%20IV:%20Iota6-5.E7Y1

2026-06-03 21:49:09 UTC

\o/ beat factorio space age finally

2026-05-25 12:10:08 UTC

I smell many barbecues

2026-05-22 15:45:17 UTC

More baguette attempts :)
https://cdn.fosstodon.org/media_attachments/files/116/618/999/170/005/202/original/8dd44a0b27ff8ea2.jpg

2026-05-17 19:16:28 UTC

I think I just made the first camera with OMT support (Open Media Transport)
Now I just need to make a Linux client
https://cdn.fosstodon.org/media_attachments/files/116/591/513/603/801/313/original/9bc1a61fe1498ed8.png

2026-05-17 09:52:09 UTC

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I have printed the one in the screenshot, the walls of the thin 3d print are flexible enough to make it work.

2026-05-16 18:01:01 UTC

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this case is absolutely possible
https://cdn.fosstodon.org/media_attachments/files/116/585/559/500/857/233/original/f97b64ba1f225733.jpg

2026-05-15 20:36:22 UTC

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Sadly not, my usb dongle is still broken :(
I moved on to the DA14AVDDECTDEVKT devkits, those were a bit easier to work with...

2026-05-15 20:29:20 UTC

This is definitely the best dough proofing machine I've bought
https://cdn.fosstodon.org/media_attachments/files/116/580/479/300/097/931/original/604182c9b3352563.jpg

2026-05-15 13:55:10 UTC

Since I hadn't done it before: a video about lsplug: https://www.youtube.com/watch?v=nAYND-fDETc

2026-05-14 15:45:48 UTC

I made baguettes
https://cdn.fosstodon.org/media_attachments/files/116/573/702/877/933/730/original/cda9b6f9468f65d2.jpg

2026-05-14 15:30:10 UTC

Logbookd 0.2.6 is released :)
https://git.sr.ht/~martijnbraam/logbookd/refs/0.2.6

2026-05-12 15:04:28 UTC

The camera prototype now has a BOM and the ever growing list of 3d printed parts can now be compiled with a makefile
https://github.com/MartijnBraam/c2/tree/develop/case/proto4

2026-05-07 19:31:30 UTC

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oh I can just remove the contrast algorithm from the tuning...

2026-05-07 19:30:14 UTC

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My application and libcamera fighting for control of the ISP :p
https://cdn.fosstodon.org/media_attachments/files/116/534/947/174/308/397/original/99b2faa71980ede3.mp4

2026-05-07 19:21:55 UTC

libcamera is stupid, I think I have to patch out it's call to V4L2_CID_USER_BCM2835_ISP_GAMMA if I want to actually have any realtime control over the tonemapping of the camera... It's a bit annoying that libcamera at the same time doesn't have a method to adjust the gamma curve but still sets it every frame to the same constant value...

2026-05-02 17:05:48 UTC

It seems to be an usable camera now :D
https://cdn.fosstodon.org/media_attachments/files/116/506/069/186/960/896/original/189f0a2104d4ecdf.jpg

2026-05-02 14:10:07 UTC

There we go, power over hdmi
https://cdn.fosstodon.org/media_attachments/files/116/505/378/611/355/773/original/1256ae9d383fd9be.jpg

2026-05-01 21:15:36 UTC

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I think 4 screws will be enough, simply because you don't need to swap sensors and lens mounts as often as lenses... I hope...

2026-05-01 11:20:00 UTC

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There's C-mount lenses with electronics, but those just have random external cables for it. for every mount I'm going to have an adapter board anyway to supply the correct power to the lens and convert the protocol, I guess I'd just do SPI to the adapter board.
The electronic lens I have is not C-mount, that mount doesn't even have a proper name.

2026-05-01 11:19:03 UTC

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I've seen some RE efforts for the MFT mount yes, I have not yet tried hooking up a logic analyzer to mine though.
The official raspberry pi 5" screen v2 is portrait orientation (720x1280). The one I'm using now is from waveshare and is 1024x600, so landscape orientation so I can have the video stream fully hardware accelerated.

2026-05-01 11:15:39 UTC

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it did not work beyond the inner planets...

2026-04-30 21:12:36 UTC

Rate my spaceship
https://cdn.fosstodon.org/media_attachments/files/116/495/715/242/586/390/original/9a71997fdce66b3e.png

2026-04-30 18:49:24 UTC

△

2026-04-30 13:47:04 UTC

Camera project progress :D
https://www.youtube.com/watch?v=ZgGXR46JxFw
Now in a way-too-long video format

2026-04-30 12:22:15 UTC

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Seemingly some algorithm that randomly drops vowels (and doesn't know about the dutch ij vowel)
https://cdn.fosstodon.org/media_attachments/files/116/493/628/943/111/366/original/28d638f6b0f484ff.png

2026-04-30 12:21:02 UTC

Huh I named a track "Room sound" and resolve automatically makes a shortened label "RoomSnd" on the places in the UI where the full name doesn't fit. Neat feature, I wonder how it works...
https://cdn.fosstodon.org/media_attachments/files/116/493/621/478/823/577/original/592f24e6ca934271.png

2026-04-26 12:04:21 UTC

Camera progress :D
https://cdn.fosstodon.org/media_attachments/files/116/470/909/869/832/474/original/247c5b36e66eba1e.jpg

2026-04-21 15:44:43 UTC

Ah yes PostNL pretending to be a functional delivery company
https://cdn.fosstodon.org/media_attachments/files/116/443/463/310/056/983/original/5678b0ad9462b51e.png

2026-04-19 10:04:15 UTC

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Maybe it works at the commands at the top here: https://leste.maemo.org/User:Sicelo/Snippets
I guess your issue is that the USB port isn't in host mode so the USB device won't get recognized. This force-enables it, because the n900 never had proper OTG support

2026-04-17 17:56:33 UTC

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and switched back to my generic PLA roll and it prints perfectly again. I also got a filament dryer today so maybe that'll help
https://cdn.fosstodon.org/media_attachments/files/116/421/332/031/779/856/original/2d3da55ed5bf0db1.jpg

2026-04-17 17:53:00 UTC

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yeah also done that, but the filament is droopy before it hits the print bed even...

2026-04-17 16:22:59 UTC

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yeah a K2. It's only doing this with two rolls of filament though.
I have one roll of random PLA and one of hyper PLA that work perfectly. And I have two rolls now that do this, also one generic PLA and this blue one is a roll of Hyper PLA straight from the sealed package

2026-04-17 14:29:07 UTC

Aaah I hate 3d printers sometimes
https://cdn.fosstodon.org/media_attachments/files/116/420/519/258/193/167/original/f05483f0c128817c.jpg

2026-04-12 20:05:59 UTC

Automatic calibration :)
https://cdn.fosstodon.org/media_attachments/files/116/393/531/580/331/540/original/a3f3863791734dc8.jpg

2026-04-10 07:38:23 UTC

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I have these. Not sure if they are actually USSR
https://cdn.fosstodon.org/media_attachments/files/116/379/266/654/815/109/original/11cb063704aa0cb8.jpg

2026-04-09 20:53:32 UTC

Getting pretty close to a good camera
https://cdn.fosstodon.org/media_attachments/files/116/376/731/204/332/053/original/0b0af4fe9b01fffa.jpg

2026-04-08 10:50:38 UTC

Made a 3d printed MFT lens mount work with an IMX290 sensor, now I just need to print a bigger case
https://cdn.fosstodon.org/media_attachments/files/116/368/696/494/705/727/original/ef6b89b72635cfe2.jpg
https://cdn.fosstodon.org/media_attachments/files/116/368/696/759/287/217/original/85ca6b6048c29404.jpg

2026-04-07 15:14:14 UTC

Every time I want to 3d print my PLA is broken...
https://cdn.fosstodon.org/media_attachments/files/116/364/071/852/161/865/original/5728a685c034aae8.jpg

2026-04-07 12:50:51 UTC

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It works, now with both zoom and focus
https://cdn.fosstodon.org/media_attachments/files/116/363/509/193/989/237/original/fe45cf2a535be5c8.mp4

2026-04-07 12:21:18 UTC

The most horrible stepper driver you could build. But I have remote control over the zoom of this lens now :)
https://cdn.fosstodon.org/media_attachments/files/116/363/391/489/415/497/original/f48df076ced7d4ef.mp4

2026-04-06 17:07:59 UTC

A bit too cold outside, but pizzaaa
https://cdn.fosstodon.org/media_attachments/files/116/358/857/650/323/737/original/5ae5840c6c83a901.jpg

2026-04-05 23:37:55 UTC

The factory must grow

2026-04-04 19:55:18 UTC

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the world already has enough shitty tablets, so nah :P
This is a custom board for my camera thing

2026-04-04 19:42:57 UTC

Half the fun of kicad is the 3d models
https://cdn.fosstodon.org/media_attachments/files/116/348/142/864/942/840/original/bbc286326667b3a1.png

2026-03-31 18:41:58 UTC

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as far as I know it isn't android. But it's certainly heavy inspired by the style of it.

2026-03-31 16:21:48 UTC

One day car manufacturers will figure out that daylight savings time exists.
https://cdn.fosstodon.org/media_attachments/files/116/324/699/228/746/155/original/934c717a5b25e25f.jpg

2026-03-30 21:30:05 UTC

Should I get a keychrom Q3 max

2026-03-30 11:06:07 UTC

Audio and a better case for my camera prototype :D
https://blog.brixit.nl/upgrading-the-foss-camera/

2026-03-27 10:52:06 UTC

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that's because it is! It's one of the rare 1:1 ratio monitors :D

2026-03-21 18:42:16 UTC

This is a very rectangular monitor
https://cdn.fosstodon.org/media_attachments/files/116/268/631/807/517/990/original/0d8b4ee05971d461.jpg

2026-02-07 14:53:24 UTC

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Prototype case done, time to go back to the software world
https://cdn.fosstodon.org/media_attachments/files/116/029/912/498/873/398/original/530e015c51a5bbfd.jpg
https://cdn.fosstodon.org/media_attachments/files/116/029/912/761/969/145/original/d619ee1456f9657e.jpg

2026-02-07 14:31:37 UTC

Imagine using 3d printers
https://cdn.fosstodon.org/media_attachments/files/116/029/829/350/121/521/original/5e4c3bd63c91d0c4.jpg

2026-01-08 17:19:34 UTC

Beautiful, my laptop uses only 66 of the 6200 modules in the kernel :)
https://cdn.fosstodon.org/media_attachments/files/115/860/617/731/712/174/original/e00b9ff54a4da175.png

2025-11-22 12:03:39 UTC

Ah yes security... Website sends a login code by email as some shitty 2FA but they've sent me the same code twice in a row already

2025-10-05 08:25:29 UTC

This thing is so annoying, and now with the new UI it's also actually in front of important UI elements with no way to close the popup.
It doesn't actually seem to be an issue even... but my only option is throwing away all the keys
https://cdn.fosstodon.org/media_attachments/files/115/320/597/177/308/683/original/02616ef331ebfa58.png

2025-09-08 23:06:39 UTC

This audio interface actually performs pretty well, ignoring that I had to add a rainbow ribbon because a messed up spin-out.
https://cdn.fosstodon.org/media_attachments/files/115/171/178/013/631/390/original/cba209018eb1e770.jpg

2025-08-15 22:22:46 UTC

I should make a font. Seems like a fun learning exercise

2025-05-16 19:19:27 UTC

I'm being chased by dinosaurs
https://cdn.fosstodon.org/media_attachments/files/114/519/123/944/477/922/original/143fd23c98155c89.mp4

2025-05-06 19:52:31 UTC

The game

2025-04-24 00:39:42 UTC

Oh nice
"Fork of GTK to restore OpenGL ES 2.0 support"
https://github.com/kkofler/gtk

2025-03-28 20:55:16 UTC

Here's another Megapixels 2.0 update.
https://blog.brixit.nl/megapixels-2-0-progress/
This edition comes with some wonderful GTK breakage...

2025-03-18 23:07:56 UTC

"Best experienced in Internet Explorer!"...
Thanks TI
https://cdn.fosstodon.org/media_attachments/files/114/185/945/855/503/932/original/a3407899f2259ed3.png

2025-02-13 13:08:38 UTC

I think I have improved the fosdem box fan noise :D
https://cdn.fosstodon.org/media_attachments/files/113/996/732/884/762/762/original/c2aaf4ca84aff5ab.mp4

2025-02-13 11:15:11 UTC

\o/ two more blog posts about the FOSDEM hardware from the people that worked on it :D
https://blog.ubii.me/2025/02/13/fosdem-mixers/
https://vasil.ludost.net/blog/?p=3494

2025-02-07 18:22:01 UTC

W00t my #FOSDEM talk is online :D
https://fosdem.org/2025/schedule/event/fosdem-2025-6832-fosdem-videobox-2025/
It's a bit ironic that the audio is crap when talking about the new audio stuff for FOSDEM but that's what you get for ad-hoc plugging in another microphone and not setting the levels.

2025-02-02 11:03:49 UTC

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yeah moving towards K now

2025-02-02 08:52:50 UTC

The true fosdem breakfast
https://cdn.fosstodon.org/media_attachments/files/113/933/441/658/566/785/original/912bad151cedeabb.jpg

2025-01-29 17:15:52 UTC

Since it has been... (checks notes)... 5 months since I made a video. A quick one on the #FOSDEM video streaming hardware :D
https://www.youtube.com/watch?v=UcOWAD8b12g

2024-12-28 12:13:17 UTC

I keep doing Megapixels releases this week :P Now there's also Megapixels 1.8.3 to import fixes for libtiff 4.7.0 from libdng into the old Megapixels 1.x codebase

2024-12-24 13:17:35 UTC

And tadaa, I've tagged the first release of Megapixels 2.0 :D
https://blog.brixit.nl/megapixels-2-0-alpha-release/

2024-12-24 00:30:45 UTC

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Also works nicely on top of the Galaxy S3 work from Jack Kekzoz. Once the weird bug is figured out that requires a media-ctl command on boot to sort out the driver the thing should be functional as camera app here :D
https://cdn.fosstodon.org/media_attachments/files/113/704/967/336/503/008/original/f771ca96c6983881.jpg

2024-12-23 19:51:00 UTC

Got the full-color YUV preview pipeline working in Megapixels 2, Should help a lot on the platforms where getting bayer-encoded camera streams is not working. This means postprocessing isn't really possible but it's better than nothing. Here running with an UVC webcam for testing.
https://cdn.fosstodon.org/media_attachments/files/113/703/871/487/217/296/original/6301cc20bbdf1e78.png

2024-10-19 11:45:41 UTC

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The true way to learn git is with a SVN -> GIT translation guide

2024-08-30 10:59:18 UTC

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I wonder how long it would take for a rust kernel to compile when it's the same size as the linux kernel.

2024-08-27 22:52:50 UTC

Here's postprocessd from #megapixels applying lens distortion and vignetting correction (the wrong values to make it more visible when testing)
This should help a lot with image quality
https://cdn.fosstodon.org/media_attachments/files/113/036/435/607/524/082/original/e7ca1b17d883e0b2.png

2024-08-27 11:19:39 UTC

Lol I'm getting "Element does not support this browser" in element desktop

2024-08-25 21:22:46 UTC

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I feel obligated to mention the stroopwafel here

2024-08-01 10:25:19 UTC

Made a video about my FOSS audio mixer shennanigans :D
https://www.youtube.com/watch?v=NjZu_C1M4Yk