Hardware fundamentals: how pull-down and pull-up resistors work
arduino uno - Do I need a pull-up/down resistor for button LED circuit? - Arduino Stack Exchange
How to Use Digital INPUT and INPUT_PULLUP on Arduino - YouTube
In a circuit with a switch and a pull-down resistor, why does the high impedance of the input not discourage current from flowing into pin? - Arduino Stack Exchange
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
Input and output: The pull-down resistor
L1: Using buttons - Physical Computing
Cant get pull down resistor to function - General Electronics - Arduino Forum
Pull-up and pull-down resistors on Arduino - ElectroSoftCloud
How to Wire a Button to Arduino? Using Internal Pull-Up. - Circuit Journal
Can I get away w/ just one pull-down resistor? - General Electronics - Arduino Forum
Pull-up / Pull-down resistor
Digital Input Pull-Up Resistor | Arduino Documentation | Arduino Documentation
Pull-up or Pull-down? - General Electronics - Arduino Forum
3 Different way of connecting a push button to Arduino » DIY Usthad
Pull-up Resistors - SparkFun Learn
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
Pull-up and Pull-down Resistors - Circuit Basics
Floating Pins, Pull-Up Resistors and Arduino - YouTube
What does pulldown resistor from Arduino's output pin to ground do? Is it necessary? - Electrical Engineering Stack Exchange
Pull-up Resistor vs Pull-down - Differences, Arduino Guide - Latest Open Tech From Seeed
Pull-up and pull-down resistors on Arduino - ElectroSoftCloud
What is Pull Up and Pull Down Resistor and Where to Use them?
Understanding the Pull-up/Pull-down Resistors With Arduino | Arduino, Pull ups, Pulls
