www.linusakesson.net

My name is Linus Åkesson, though some of you may know me as lft. I live in Lund, Sweden.

This combined homepage, blog and file archive is bilingual. If you don't understand Swedish, you may wish to trim the site down a bit by un-checking the corresponding box near the top of the page.

Latest pages:

Beagleboard VGA output

This article describes how you can extract a VGA signal from the LCD headers on a revision C beagleboard using two transistors and a bunch of resistors. Read more.

Posted Sunday 17-Jan-2010 17:00, 9 comments.

When you close the audio playback channel on a beagleboard running Linux (I'm running the Launchpad beagleboard-kernel, but I'm not aware of any version where this has been fixed), you get a really loud "pop" five seconds later when the driver removes power from the playback hardware. Here's a simple hack to prevent that from happening. Read more.

no-pop (Patch file)

Posted Tuesday 22-Dec-2009 15:52, 3 comments.

The lampslide

If mounted normally, this chandelier would hang between the projector and the screen, casting a shadow. It would also block the view from the sofa. By using a wooden door jamb as a rail and constructing a small car to slide along it, I've suspended the chandelier so that it can be moved out of the way easily. Read more.

Posted Tuesday 10-Nov-2009 16:31, 3 comments.

Leaky redaction

Yay! Third place in the 2008 Underhanded C Contest. Read more.

leaky_redaction_linus_akesson (Tarball, 1496 bytes)

Posted Wednesday 14-Oct-2009 19:34, 0 comments.

Power Ninja Action Challenge

Here's another ATmega88-based hardware chiptune, this time composed for Little Computer People 2009. It was my contribution to the "other music" compo, and won the 1st place. Read more.

lft_power_ninja_action_challenge_atmega88 (IntelHex firmware image, 15 kB)

Linus Akesson - Power Ninja Action Challenge (MP3, 3.2 MB)

Posted Sunday 19-Jul-2009 17:47, 8 comments.

Turbulence source code

On this page you'll find the complete source code for Turbulence, as well as a general overview and discussion of some of the techniques I used. Read more.

turbulence-src (Source code, 60 kB)

Posted Monday 11-May-2009 16:47, 0 comments.

Plasma

Plasma is a small (637 lines of source code) tool for compiling and concatenating propeller assembly language (PASM) and binary data. It extends PASM with some new features, most notably ARM-like constant pools. Read more.

plasma-1.0 (Source code, 7 kB)