You’ll throw your back out playing this analog TV synth

de-rastra

While CRT televisions fall to the wayside as more people adopt flat-panel TVs, the abundance of unused sets gives hacker/artist [Kyle Evans] an unlimited number of analog canvases on which to project his vision. He recently wrote in to share his latest creation which he dubs “de/Rastra”.

The “CRT Performance Interface” as he calls it, is an old analog television which he hacked to display signals created by moving the TV around. Fitted with an array of force sensors, accelerometers, and switches, the display is dynamically generated by the movements of whomever happens to be holding the set.

Signals are sent wirelessly from his sensor array to an Atmel 328 microcontroller with the help of a pair of XBee radios, where they are analyzed and used to generate a series of audio streams. The signals are fed into a 400W amplifier before being inserted into the CRT’s yoke, and subsequently displayed on the screen.

We’re sure [Kyle] is probably trying to express a complex metaphor about man’s futile attempts to impose his control over technology with his project, but we think it simply looks cool.

Check out [Kyle’s] work for yourself in the video below and give us your take in the comments.

[Read more…]

Build a rig to make orbs in your light paintings

We’ve covered plenty of light painting projects here. People are always finding new ways to create interesting things in this fairly new medium. This project covers a method of creating orbs or spheres in your light paintings. The author points out that many people do this currently by putting the light source at the end of a string, swinging it in front of them like a propeller, and turning slowly in a circle. He wanted to automate the process a bit, so he combined his motorized telescope tripod, a power drill, a strip of RGB LEDs, and a few scraps of wood. He now has an automated system to make perfect orbs. Some of the examples he shows are quite stunning.