This one is the most modest: Two printed strips of paper covered with inkjet ink are layered on top of each other.
When contact is made between the two strips, it creates varying levels of resistance.
The Arduino then generates discrete tones thru a connected speaker based on the
level of voltage read.
An interactive mechanical piece where various found objects are used for their musical potential as instruments of percussion. A laptop controls the timing of the many servos that are attached to sticks and other things that hit things like boxes, tins, and a real drum to create music. The artist also sets up his piece in installations and even can play live. Exploring the musical potential of found objects through computing is a great way of mixing the digital with the "analog."
Electric Chaircut Nelson
Audio sensors are connected to scissors as the artist/barber cuts people's hair, on-site at the event. The sound is routed through effects pedals and played through an amplifier mounted on a harness on the artist's back. It's applied musical performance art. Musically, it sounds very industrial, or "Sonic Youth"-esque maybe; lots of feedback and reverb, and in general, creating a strange and likeable experience. My favorite piece at Maker Faire.
Beatbox and Bicycle Wheel Adam Matta
A "scratching" instrument, but instead of a turntable, using a bicycle wheel; instead of the grooves of a vinyl record, real magnetic tape from an audio cassette; and instead of a record needle, the playhead of an old Walkman. The source audio was taken from AM talk radio, recorded with a cassette recorder. Best of all, the bicycle wheel scratching apparatus is mounted on a stool a-la Marcel Duchamp. A thoroughly analog experience.
All the pieces I chose above are musical - even though the artistic/technological interests I have pursued up to this point have been almost exclusively visually oriented and heavily "algorithmic" in nature. It's obvious that it's time I branched out...
The mood light now alternates between 2 green and 2 blue LED's using a very slow crossfade over the course of about 45 seconds (It still brightens and dims very gradually in response to the change in ambient light)
The main body of the enclosure is now sealed, and the top now comes off very easily as one unit.
The light sensor is now housed within the enclosure, as is a battery pack.
The LED's are now diffused using styrofoam balls
The above video primarily demonstrates the slow change in color from green to blue and blue to green.
Three green LED's in a ziggurat-shaped cardboard enclosure react to a light sensor by slowly increasing in brightness as ambient light dims, and vice-versa.
I noticed that when the LED's are lit in their lower brightness range, the apparent change in brightness was very noticeable as they changed in 1-increment steps. In order to make the change in light intensity appear smoother (especially since I am tweening their values slowly), I stagger the values of the 3 LED's over time in this kind of pattern --