this is my hacked front light for my bike. it's a tiny45 avr microcontroller that i programmed to play the complete 14min drum part in ravel's bolero. the reason i picked bolero was that it's a fairly well known rhythm and that it's very repetitive (= don't require much memory).
firmware attached.

bikelightBolero from redFrik on Vimeo.

i was so fed up with only listening to music in headphones, so with the help of my dad i built a pair of SQ-50L. they sound really great. full and rich sound. i have a sonic impact t-amp gen2 to drive them.

this is version 2 of a minimal and cheap one-bit synthesizer i developed for this workshop. basically i just changed the hardware and took out one of the potentiometers and lowered the oscillator to 1mhz. now it sounds a lot different and more chaotic.

monijonsyn2 from redFrik on Vimeo.

finally found some time to build a tiny synth based on a design by SGMK (mechatronicart.ch). so simple and it sounds so good! evil little thing. i did some modifications: basically one more audio channel with different pots and caps and 2 switches for the ldr.

as part of the xxxxx-workshops series at this year's club transmediale, i was asked to do a day on one bit music. this is a very silly way to produce music - basically flipping pins on/off with no amplitude control! but i liked the challenge and for me limitations like these are needed to get anything done at all. thanks to anke, martin and derek for organising.
attached are the slides, arduino code and schematics we used that day.

the workshop (6-hours short) was divided into 3 parts: first some theory about microcontrollers, avr programmers and coding in c. then we used arduino to prototype some simple synths (bit-bang and pwm techniques). and last we took the arduino code and burned it onto a standalone mega8l chip and built minimal circuits (some buttons, battery, chip, speaker).

if you want to try to do sound synthesis with the arduino, you might want to check out the files in 1bitmusic_arduino.zip below. this file also includes code for my little synth called monijonsyn.

ported some old java code (also a max external - f0.construct) to supercollider. it's fairly useless.

now i've also worked on porting some examples from processing to supercollider. this was a bit trickier than porting over code from nodebox. many fundamental processing features aren't implemented in supercollider - video, 3d, opengl etc.

the code lives here...
http://swiki.hfbk-hamburg.de/MusicTechnology/902
and here for swingosc (windows/linux)...
http://swiki.hfbk-hamburg.de/MusicTechnology/875

i spent some time porting over 22 of the 35 examples that comes with the nice graphical programming environment nodebox to supercollider. (nodebox is based on python and specializes in generative graphics.)
if one compare the code for these examples, i think it is obvious how capable supercollider is for 2d graphics. it's just as simple as nodebox and processing!
well, some more advanced features are missing at the moment - like reading back paths, image manipulation, bindings to coreimage, pdf export etc, but simple interactive 2d and animation sc can handle.

all the ported code lives here...
http://swiki.hfbk-hamburg.de/MusicTechnology/901
and here for swingosc (windows/linux)...
http://swiki.hfbk-hamburg.de/MusicTechnology/871

here's a class for supercollider that generates perlin noise. i wrote it about a year ago to learn how that works but didn't finish the helpfile until now.

some examples of images made with this class...

and this is an example from the helpfile that gives an overview of some settings of 'persistance vs octaves'. the 8 steps of persistance grows from 0.25 to 0.95 left to right. and octaves grows from 2 to 9 bottom to top.

(update 090523: RedPerlin is now part of the redUniverse quark)

sorry this place got hacked and someone overwrote all my media files (snd, pic, vid). i'm travelling atm and it will be a few more weeks until i can access the backup files and restore the archive.
- 071022 edit: ok everything should now be back in place.
- 071028 edit: and now updated to drupal 5.3