RT @baffo How to hook up 40 switches to an Arduino: 5 shift register & 1000 wires (OK, just 80) http://flic.kr/p/7XaxPV
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RT @baffo How to hook up 40 switches to an Arduino: 5 shift register & 1000 wires (OK, just 80) http://flic.kr/p/7XaxPV