Hardware projects

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.

Craft

Craft is a demo running on its own minimalistic demo platform. The demo platform is based on an ATmega88 microcontroller. Read more.

• lft_craft (Original video clip, Xvid, 89.4 MB)

• lft_craft_capture (Full screen video capture, H.264, 85.5 MB)

• Linus Akesson - Craft (Soundtrack, MP3, 3.3 MB)

• lft_craft_src (Schematics, firmware binaries and source code, 70.5 KB)

Posted Thursday 27-Mar-2008 20:33, 115 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.

The chimney claw project

One year, my parents realized that there was a bird's nest down their chimney, at the very bottom. You could hear the chirps from within the kitchen. Read more.

Posted Wednesday 20-Jun-2007 17:31, 3 comments.

The hardware chiptune project

Normally, when you create a chiptune, you start with an existing chip (such as the SID chip or the YM2149) and write a tune for it. We decided to start from scratch, and create a chip and a tune. Read more.

• kryo-hardware_chiptune (Original zipped release, DivX, 18.5 MB)

• Linus Akesson - The hardware chiptune project song (Recorded MP3, 1.5 MB)

• hardwarechiptune-cad (Schematic, EPS source code, 8.6 KB)

• hardwarechiptune-cad (Schematic, PDF, 31.9 KB)

• hardwarechiptune-tracker (Tracker with source code, docs and song data, 26.0 KB)

• hardwarechiptune-src (AVR source code, 10.5 KB)

Posted Saturday 30-Jun-2007 11:04, 39 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.

The pot plant monitor

This pot plant is connected to my computer. Every five minutes or so, the resistance of the soil is measured. The resistance varies indirectly with the dampness of the soil, as you can see in the graph. Read more.

Posted Wednesday 9-Jan-2008 17:20, 10 comments.

The remote control project

This is the story of how I built a remote control system for my computer and speakers. It is based on an off-the-shelf universal remote and some AVR chips and other electronics. Read more.

Posted Friday 26-Oct-2007 16:39, 6 comments.

Turbulence

Turbulence is the successor of craft. It's a microcontroller demo based on the Propeller chip from Parallax. External I/O consists of stereo sound (at line level) and a VGA signal. Read more.

• lft_turbulence_h264_capture_720x576 (Presentation video and high quality capture, 720x576, 139 MB)

• lft_turbulence_h264_presentation_and_cam_1280x720 (Presentation video and low quality capture, 1280x720, 145 MB)

• lft_turbulence_h264_presentation_and_cam_640x360 (Presentation video and low quality capture, 640x360, 46 MB)

• turbulence (Binary EEPROM image, 32 KB)

• Linus Akesson - Turbulence soundtrack (Soundtrack, MP3, 4.8 MB)

Posted Monday 13-Apr-2009 13:09, 14 comments.