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CD22100 4 x 4 CMOS Analog Matrix Switch IC with Arduino code and schematic

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I found these old CD22100 integrated circuits mixed with a bunch of CD4067's in my parts bin. The CD22100 is a CMOS analog switch arranged in a 4 x 4 cross-points array, ideal for creating a matrix switch module for analog synthesizers CV and audio signals. The video shows a test on breadboard, using LEDs and an Arduino Nano board. Schematics and code included.

Thanks for watching.
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