Machine Thinking

Gijs Gieskes has made many wonderful machines from gameboys or other machines which he’s circuitbent.

He writes about the Acid Machine:

The circle with the lines that you see on the top of the machine, rotates and displays the note you are playing.
When you play a C the lines in the middle circle will be standing still.. from the C it will go outward, displaying all notes on a keyboard in 12 steps.

It works by making a LED blink in the frequency of the sound, and rotating the image at a set speed.

more information here

(thanks, kevin!)

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In the second video you can see how he can use foot pedals to change the chord.

Possibly Related Posts:

• Acid Machine
• Phonographantasmascope
• Saturn V launch views
• Dream of Pastures Zoopraxiscope: a bike-driven movie projector
• Riding the mechanical tiger Shiva