Random Touch Sensitive Controller Idea

bloodniece

Pete Blasser at Ciat-lonbarde.net makes amazing instruments, but his paper circuits are free. I made the Mr. Grassi circuit and put banana jacks and metal touch sensors in the control surface. Each banana jack is a CV out.

http://www.ciat-lonbarde.net/paper/grassi.gif

mysetup.jpg

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Soundlab + Lil Sidrassi + Old Mr. Grassi + Monosyn (my circuit)

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Coriolis · Joined: Apr 11, 2005 Posts: 616 Location: Stilling, Denmark

Nice boxes! When you say touch sensors, are they simply circuitbending-style touch points, or something more sophisticated, like Buchla /Serge touch keyboards?

Cos I really want to build one of those... Cool

Anyway, nice stuff - got any sounds from them you can post?

C

bloodniece · Posted: Mon Nov 20, 2006 10:27 am Post subject: Mr. Grassi - Sample

here is a raw recording from just the Mr. Grassi cicuit I built. Performance is all touch with no patching. Yes, it outputs in stereo.

grassi.mp3

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Mr. Grassi recording by Malocchio (bloodniece)

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grassi.mp3

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bloodniece · Posted: Mon Nov 20, 2006 10:34 am Post subject: Schematic

Star icons are touch points. crosses are strong and stars are weak. Some caps (he calls them hairy caps) can be of any value with a certain range.
Small caps = high frequencies
Big Caps (electrolytics especially) = bass

Random resistors are used on the output from the timers. The randomer the better. I'll post a sound sample of the Grassi driving the SL later. I'm out of batteries!

grassischem.jpg

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