Arduino uno User Manual

Before you read the solutions in the “What If It Doesn’t Work?” sections,
though, try to solve the problems yourself, because that’s the most effective
way to learn. In the unlikely case that you don’t run into any problems, you’ll
find a list of exercises at the end of every chapter to build your skills.
Arduino Uno and the Arduino Platform
After releasing several Arduino boards and Arduino IDE versions, the Arduino
team decided to specify a version 1.0 of the platform. Arduino’s version
numbering was counterintuitive before. At the beginning of the project the
developers increased the version number by 1 with each new release. They
did that up to number 23, and then they decided to use 1.0 as the version
number for the next release. That means Arduino 1.0 is more recent than
Arduino 23.
Arduino 1.0, released at the end of 2011, has since been the reference point
for all developments. The Arduino developers have also released the Arduino
Uno board, and they’ve continued to improve the IDE and its supporting
libraries.
In parallel, the Arduino team has created more Arduino boards, such as the
Arduino Due,
2
the Arduino Leonardo,
3
and the Arduino Yún.
4
These boards
either have more powerful microcontrollers or come with additional hardware,
such as a Wi-Fi module.
Most of the new boards use a different processor architecture designed by
ARM. This architecture isn’t compatible with the architecture of the older
board’s AVR processors. To overcome this gap, the Arduino team started to
develop version 1.5.x of the Arduino IDE in parallel with 1.0.x. This develop-
ment led to version 1.6.0, which supports the different processor architectures
transparently.
In addition to all that, there’s a separate IDE for the Arduino Galileo.
5
This
board was created by Intel and is compatible with the Arduino.
This book is current for versions 1.0.6 and 1.6.0 of the Arduino platform and
up to date for the Arduino Uno board. Most of the projects will also work on
other recent boards, such as the Leonardo or the Due. They will also work
2. http://arduino.cc/en/Main/ArduinoBoardDue
3. http://arduino.cc/en/Main/ArduinoBoardLeonardo
4. http://arduino.cc/en/Main/ArduinoBoardYun
5. http://arduino.cc/en/ArduinoCertified/IntelGalileo
Preface • xvi
report erratum • discuss
www.it-ebooks.info

Arduino uno Specifications

General

Form factor	Arduino
Certification	RoHS, FC, CE
Processor model	-
Processor frequency	- MHz
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Flash memory	0.032 MB
Maximum internal memory	- GB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Wi-Fi	No
Number of analog I/O pins	6
Number of digital I/O pins	14

Weight and Dimensions

Board dimensions	53.4 x 68.6 mm