Introduction to Arduino

Introduction to
Arduino

Chris Meyer


Enlight

Tech Talk
-

2009

http://www.danielandrade.net/

Arduino

ARRRR, like a pirate /

/ DWEE, just say "do we“ fast /

/ NO, as in no.





”ARRR
-
DWEE
-
NO”

http://www.arduino.cc/cgi
-
bin/yabb2/YaBB.pl?num=1191602549%3Bstart=all

What is
Arduino
?

•
Open Source Hardware Development Platform

•
USB Programmable Microcontroller (MCU)


$30
Investment!

Microcontroller?

Miniature Computer

•
Processor, Storage and RAM
all in one tiny package!

•
Atmel Microcontroller
(MCU), typically Atmega328

Atmega328 Information

Component

Specification

Clock

Speed

16MHz

Flash

Memory

32K

EEPROM

1K

SRAM

2K

Analog

-
> Digital

6Ch 10bit

Communication

SPI

Digital

14 I/O

PWM

6 Channel (Digital)

Shields?

•
Shields break
-
out/wire
-
up

additional components to MCU

Prototyping

Audio / MP3

Ethernet

GPS

Servo/Stepper/
DC Motors

More Shields!


LCD

WIFI

Zigbee

MIDI

LED Display

So What?

•
Previously, MCU’s were
very difficult to learn to
use

•
Required learning
libraries, specialized
protocols, timings, code
minimization, 1,000+
page documentation


Arduino

makes it Easy!


@
Arduino.cc

Use
Arduino

to Control Things

•
We’re going to:

–
Drive Servo

–
LED

–
Buzzer

–
Read analog voltage in

Servo Control

•
Pulse Width Modulation (PWM)

•
We Provide:


http://www.micromouseinfo.com/introduction/images/intro_hardware/PWM.gif

+5VDC

PWM Signal

Ground

0
-
180 Degree

Range of Motion

We Get:

Transistor Output

•
Use a transistor to “multiply” low power output
from MCU to higher power to drive something

Relay

Transistor

http://www.kpsec.freeuk.com/tranci rc.htm

•
Take voltage signal and convert to discrete
digital signal

5V








0V

1024 Bits








0 Bits

Analog
-
> Digital

Analog
Input

Digital
Equivalent

Analog
-
> Digital

•
Also have to worry about resolution of acquisition
(Bit
-
Noise)

http://zone.ni.com/cms/images/devzone/tut/dhall_analog_sig_0.JPG

Pinout


Demo Time!


Questions?


http://www.danielandrade.net/