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The Arduino Typewriter

Konstantin Schauwecker write: “I modified a vintage typewriter to function as a USB keyboard using an Arduino and 50 phototransistors. The typewriter is a German Olympia Monica that I bought at a local flea market. For this project I created a simple PCB that carries the phototransistors and several multiplexers and decoders. The PCB is connected to the Arduino through a ribbon cable. I used an Arduino Leonardo, which can function as a USB input device.”

http://www.konstantin-schauwecker.de/typewriter.php

 

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