Arduino uno User Manual

CHAPTER 4
Building a Morse Code Generator Library
You now know enough about the Arduino development environment and
about blinking LEDs to start a bigger project. In this chapter, we’ll develop a
Morse code generator that reads text from the serial port and outputs it as
light signals using an LED.
By building this project, you’ll deepen your understanding of serial commu-
nication between the Arduino and your computer. You’ll also learn a lot about
the typical Arduino development process: how to use existing libraries and
how to structure bigger projects into your own libraries. At the end, you’ll be
able to create a library that is ready for publishing on the Internet.
What You Need
1. An Arduino board
such as the Uno,
Duemilanove,
or Diecimila
2. A USB cable to
connect the
Arduino to your
computer
3. A speaker or a
buzzer (optional)
report erratum • discuss
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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