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Built-in Examples

Learn the basics of Arduino through this collection tutorials. All code examples are available directly in all IDEs.

Basics

Analog Read Serial

Bare Minimum code needed

Blink

Digital Read Serial

Fading a LED

Read Analog Voltage

Digital

Blink Without Delay

How to Wire and Program a Button

Debounce on a Pushbutton

InputPullupSerial

State Change Detection (Edge Detection) for pushbuttons

Simple keyboard using the tone() function

Play a Melody using the tone() function

Tone on Multiple Speakers

Pitch follower using the tone() function

Analog

Analog In, Out Serial

Analog Input

Analog Write with 12 LEDs on an Arduino Mega

Calibrate Sensor Input

Fading

Smoothing Readings From an Analog Input

Communication

ASCII Table

Create a LED Dimmer

Create a Graph with Processing

MIDI Note Player

Use Multiple Serial Ports on the Arduino Mega

Physical Pixel

Read ASCII String

Serial Call and Response (handshaking)

Serial Call and Response (handshaking) with ASCII-encoded output

SerialEvent

SerialPassthrough

Virtual Color Mixer

Control Structures

How to Use Arrays

For Loop Iteration (aka The Knight Rider)

Switch (case) Statement, used with sensor input

Switch (case) Statement, used with serial input

While Loop

If Statement (Conditional Statement)

Sensors

ADXL3xx Accelerometer

Detect a Knock

Memsic 2125 Accelerometer

Ping Ultrasonic Range Finder

Display

LED Bar Graph

Control an 8x8 matrix of LEDs.

Strings

Character Analysis

String Addition Operator

String Appending Operators

String Case Change Functions

String Character Functions

String Comparison Operators

String Object Constructors

String indexOf() and lastIndexOf() Method

How to Use String length()

String length() and trim() Commands

String replace Function

String startsWith and endsWith Functions

String substring Function

String to Int Function

USB

Button Mouse Control

Joystick Mouse Control

Keyboard and Mouse Control

Keyboard Logout

Keyboard Message

Keyboard Reprogram

Keyboard Serial

Arduino ISP

Arduino as ISP and Arduino Bootloaders

From Arduino to a Microcontroller on a Breadboard

Connect and Contribute

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