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Uploaded by edwindertien on Dec 5, 2008
DrawDio music pencil, made with half a transparent christmas ball, pencil, NE555 circuit on breadboard, tiny lithium battery from a shakelight...Original idea from http://web.media.mit.edu/~silver/drawdio/more on http://retrointerfacing.com
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the pencil writing works as a resistor
DoItYourselfMaker 4 months ago
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the pencil writing works as a resistor
DoItYourselfMaker 4 months ago