L1: Using buttons - Physical Computing
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
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Pull-up Resistors - learn.sparkfun.com
L1: Using buttons - Physical Computing
Pull-up Resistors - learn.sparkfun.com
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L1: Using buttons - Physical Computing
Pull-up resistor - Wikipedia
Digital Input Pull-Up Resistor | Arduino Documentation | Arduino Documentation
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Make button respond immediately without delay in arduino - miliohm.com
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JavaScript Robotics: Button - Pullup with Johnny-Five
