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Pull-up / Pull-down resistor
L1: Using buttons - Physical Computing
L1: Using buttons - Physical Computing
Arduino Uno Example Sketch: Digital Input Pullup - Support - Engineering and Component Solution Forum - TechForum │ Digi-Key
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Digital Input Pull-Up Resistor | Arduino Documentation | Arduino Documentation
Arduino Button or Switch Interface Circuit without Pull Up Resistor
How to Wire a Button to Arduino? Using Internal Pull-Up. - Circuit Journal
Arduino Internal Pull-Up Resistor Tutorial - Bald Engineer
