Hardware fundamentals: how pull-down and pull-up resistors work
arduino - Pull-down resistor is needed? - Stack Overflow
Push Button with Arduino | Pull up & Pull down resistor | Led Control using Button - YouTube
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
InputPullupSerial | Arduino Documentation
Pull-up Resistors - SparkFun Learn
L1: Using buttons - Physical Computing
Pull-up Resistors - SparkFun Learn
Gammon Forum : Electronics : Microprocessors : Switches tutorial
Understanding the Pull-up/Pull-down Resistors With Arduino : 6 Steps - Instructables
Pushbutton and Pull-Up Resistor - Project Guidance - Arduino Forum
3 Different way of connecting a push button to Arduino » DIY Usthad
Arduino Button or Switch Interface Circuit without Pull Up Resistor
Pull-up and pull-down resistors on Arduino - ElectroSoftCloud
Input and output: The pull-down resistor
Using Pushbuttons with Arduino. Pullup vs Pulldown resistors - Hackster.io
Pull Up Resistors - Tinker Hobby
L1: Using buttons - Physical Computing
Codasign | Adding the Button
How to use the so called pullup resistors in the Arduino - Quora
How to wire a switch to a microcontroller with pullup resistors
Pull-up Resistors - SparkFun Learn
arduino - Why use a resistor for Pull-Up? - Electrical Engineering Stack Exchange
How to Use Digital INPUT and INPUT_PULLUP on Arduino - YouTube
