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Lab: Digital Input and Output with an Arduino – ITP Physical Computing
Intro to Arduino: Digital Input and Output (I/O) – NightShade Electronics
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Arduino Pin Configuration: A Detailed Guide (2021) | Robu.in
The Basics of Arduino: Reading Switch States
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Arduino UNO Rev3 with Long Pins | Arduino Documentation | Arduino Documentation
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How To: Multiple Buttons on 1 Analog Pin - Arduino Tutorial : 5 Steps (with Pictures) - Instructables
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serial - Two Arduinos Send data via Analog Pin? - Arduino Stack Exchange
