i.document

last week i went by when a cell phone rebooted linux at frankfurt airport. the cell phone in korea last year was stuck in the bios.

angle a = 1.1;
step = 5;
new_x = Math.sin(a) * step;
new_y = Math.cos(a) * step;

wikipedia.de – dreieck

i am giving two lectures this semester: “experimental interfaces: everyday interfaces” for the graduate students and “interactive media basics” for the undergraduate students.

today i found some cheap led christmas fairy lights in the supermarket. they are ideal for building jeff han’s multitouch displays. it’s a line of 40 leds in a row with a 3V power supply. each blue led can be easily replaced by a IR led without soldering.

i built a small setup in 10 minutes. it works. the edges of the plexiglass have to be polished and the blue leds replaced by IR ones..

for prototyping i am using processing with the blob detection library until i get the visionlib plugin for finger detection. reactivision will get finger detection soon, too.