N&V_2013-09.pdf

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September
2013
28
Build a Headset Amplifier
This project uses all discrete components
and can be driven by a CD or MP3 player.
Plus, it’s a forgiving circuit for beginners.
■
By Ronald Anderson
40
Build This Simple Alarm System
With the TI Launchpad
Constructing an alarm system complete with a
keypad interface is cheap and simple with
Texas Instruments’ MPSP430 microprocessor
and their easy-to-use Flash programmer and
debugging tool.
■
By Derek
Tombrello
34
Detecting Sounds With
the Sonic Sensor
Put your appliances under sonic control with this
super souped-up version of a “clapper.
”
■
By Thomas Henry
Columns
Page 08
Page 50
Page 57
Page 69
08
TechKnowledgey 2013
Events, Advances, and News
Harpooning your brain, free secure browsing,
virtual money, and high-end ear buds are some
of the titillating topics covered.
57
The Design Cycle
12
Near Space
Advanced Techniques for Design Engineers
Home Automation Telegesis Style.
Absolutely zero ZigBee technical knowledge
(or a third mortgage) is needed to put the
Telegesis home automation radios to work.
Programming • Hardware • Projects
Arduino Handheld Prototyper — Part 3.
Design a fresh air controller for your castle,
or wherever you call home.
Approaching the Final Frontier
The 2013 Great Plains Super Launch.
This year’s conference included topics such
as near space STEM, designing and flying
photometers, long-duration balloon flights and
telemetry modes, and vacuum cannons.
69
Smiley’s Workshop
16
Q & A
Reader Questions Answered Here
ESD instrument circuits, more about making sparks,
VFO design, and MailBag round out this
month’s topics.
Adventures in Propeller Programming
Full Color With One Wire.
LED manufacturers are creating some pretty cool
products these days, and with just a little bit of
programming, you can have a lot of fun with them.
Departments
06
DEVELOPING
PERSPECTIVES
Nostalgia and the
Amnesia of Time
READER FEEDBACK
NEW PRODUCTS
SHOWCASE
64
67
77
78
81
NV WEBSTORE
ELECTRO-NET
CLASSIFIEDS
TECH FORUM
AD INDEX
07
22
27
50
The Spin Zone
Nuts & Volts (ISSN 1528-9885/CDN Pub Agree #40702530) is published monthly for $26.95 per year by T & L Publications, Inc., 430 Princeland Court, Corona, CA 92879. PERIODICALS POSTAGE
PAID AT CORONA, CA AND AT ADDITIONAL MAILING OFFICES. POSTMASTER: Send address changes to
Nuts & Volts, P.O. Box 15277, North Hollywood, CA 91615
or Station A, P.O.
Box 54, Windsor ON N9A 6J5; cpcreturns@nutsvolts.com.
4
September 2013
Finding the right parts for your design can be difficult, but you
also don’t want to spend all your time reinventing the wheel (or
motor controller). That’s where we come in: Pololu has the
unique products — from actuators to wireless modules — that
can help you take your design from idea to reality.
5V Step-Up Voltage
Regulator U1V11F5
ITEM #2562
170-Point
Breadboard
ITEM #1491
Simple Motor
Controller
24v23
ITEM #1383
MinIMU-9 v2 Gyro,
Accelerometer,
and Compass
ITEM #1268
$
4
95
$
Other
colors
available
2
95
$
59
95
$
Adjustable and
3.3V versions
available
39
95
••
•
0.5 V to 5.5 V input
True shutdown, linear down-
regulation
70% to 90% efficiency
•
•
17 rows of tie points for up to two
14- or 16-pin DIP ICs
Tabs allow multiple units to be
connected for larger projects
Highly configurable DC motor
controller that supports four
interface modes: USB, TTL serial,
analog voltage, and hobby radio
control (RC).
Provides 9 rotation, acceleration,
and magnetic measurements that
can be used to calculate absolute
orientation.
Premium Jumper
Wires
STARTING AT
Jrk 21v3 USB
Motor Controller
ITEM #1392
$
2
99
pack
$
49
95
SAVE
$
20
on orders over 100
$
Coupon Code:
Highly configurable motor
controller that offers four control
interfaces and can optionally be used with feedback for
closed-loop speed or position control. Great for use with
our linear actuators or making your own servo!
NV092013
QTR-L-1RC Reflectance
Sensor
ITEM #2455
Make prototyping connections quickly and easily with
these high-quality jumper wires, available with male or
female terminations in a variety of lengths and colors.
37D mm Metal
Gearmotors
$
24
95
Dual VNH5019 Motor
Driver Shield for
Arduino
ITEM #2502
Linear
Actuators
STARTING AT
$
Other sizes
available
49
95
$
Various sizes
available
66
95
$
4
952-pack
••
Several gear ratios stocked
Versions with integrated encoders
also available
Control two brushed DC motors with
an Arduino or Arduino-compatible
board. Operates from 5.5 to 24 V and
can deliver a continuous 12 A (30 A
peak) per motor.
••
•
2’’ to 12’’ stroke lengths
Multiple speeds available
Potentiometer feedback option
Add line sensing or proximity/edge
detection to your robot with these
tiny sensors, capable of measuring
infrared reflectance at distances of
up to 1 inch.
Zumo Robot for Arduino
(Assembled with 75:1 HP Motors)
Dagu Wild Thumper 6WD Chassis
(With 75:1 Steel Gearboxes)
ITEM #2506
ITEM #1563
$
98 mm
99
98 mm
95
•
••
Rugged aluminum body
All-terrain suspension
Available in 4WD and
other gear ratios and colors
$
249
95
Build and customize
your Zumo!
Dagu Rover 5 Tracked Chassis
ITEM #1550
•
••
•
•
Individual parts and kit version also available —
build your own configuration!
Two micro metal gearmotors coupled to a pair of silicone
tracks
Stainless steel bulldozer-style blade
Array of six infrared reflectance sensors for line following
or edge detection
3-axis accelerometer and magnetometer
Buzzer for simple sounds and music
$
49
95
•
•
•
Durable rubber tracks
Adjustable ground clearance
Available with encoders
5" Robot Chassis RRC04A
•
••
Laser-cut acrylic base plate
Many colors available
Add motors, wheels, a ball caster, and
a controller to build a complete robot
$
7
95
Find these products and more at:
www.pololu.com

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