L4: Fading an LED - Physical Computing
Lab: Digital Input and Output with an Arduino – ITP Physical Computing
Digital Read Serial | Arduino Documentation | Arduino Documentation
Arduino port register manipulation control tutorial
Arduino Input Set up Physical Arduino, and program | Chegg.com
Getting Started with Input Output Devices on Arduino
How to Use the Arduino's Digital I/O - Projects
What is an Arduino? - SparkFun Learn
Arduino Uno Pinout | Arduino FAQs
8-Bit IO Port Library for Arduino - Hackster.io
The Basics of Arduino: Reading Switch States
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Arduino Uno Pins - A Complete Practical Guide - The Robotics Back-End
Arduino project: read a digital input
Analog Input | Arduino Documentation | Arduino Documentation
Tutorial 17: Using a Button with Arduino - Programming Electronics Academy
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How to Manipulate Arduino Pins Simultaneously | Microcontroller Tutorials
Arduino Uno - 5V to input pin - General Electronics - Arduino Forum
How to Use the Arduino's Digital I/O - Projects
Floating Pins, Pull-Up Resistors and Arduino - YouTube
Android Basics and User Interfaces
Arduino pinMode on Analog Inputs - Bald Engineer
Arduino UNO Rev3 with Long Pins | Arduino Documentation | Arduino Documentation
