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4 January 2015
Reader Questions Answered Here
Answering a question about a previous question,
free to air satellite TV, and testing GFCIs properly
are discussed this month.
12 PICAXE Primer
Sharpening Your Tools of Creativity
Harnessing the Power of USB.
Construct a couple of simple USB-based power
supplies that you can use in your next
19 The Ham’s Wireless Workbench
Practical Technology from
the Ham World
An Intro and Antennas.
Amateur radio is back in the pages of NV!
Did you know that hams are big players in the
Arduino and Raspberry Pi communities?
Even if you’re not interested in the full ham radio
experience, you might be curious about using
non-licensed wireless data links in your projects.
Whatever your specialty, learning about radio will
help you select, apply, and use wireless
53 Smiley’s Workshop
Programming • Hardware • Projects
The Arduino Classroom.
Arduino 101/Chapter 12: Data Logger/Part 1.
Learn how to store data on an Arduino UNO so you
can use battery-operated devices to collect data out
in the field.
62 Open Communication
The Latest in Networking and
Serial I/O Data Interfaces: Part 1.
Data is transferred serially in most applications.
However, there is definitely more than one way to
“send” that cat.
68 The Design Cycle
Advanced Techniques for
Atmosphere Takes Bluetooth Apps
to New Heights.
Anaren is bringing Bluetooth “out of the stone age”
with their new web-based tool that lets you
simultaneously code an embedded Bluetooth
monitor/control application and its associated
smartphone GUI app.
26 A Barn Door Tracker for AstroPhotography
Now, you can be the star and take
long exposure photographs of the
■ By Theron Wierenga
32 Arduino-Based Master Clock
If you’ve got some old impulse
secondary clocks that are lacking
a master, build this project and
get them working accurately
and electronically. Plus, you
can repurpose what you
learn to control other items
using an Arduino and an
IGBT MOSFET device.
■ By Joe Fox
40 Flight Computers for Sounding Rockets
Sure, launching model rockets is cool and all, but
what if you could incorporate some science and
learning into the fun, too. The flight computers
described here will help you do that.
■ By Dan Gravatt
46 Soldering Reflow Controller
This product review describes a new kit/system that
can help alleviate some of the drudgery involved
with building surface-mount printed circuit boards.
■ By Paul Atkinson
Just in Time Parts
vs. the Junkbox
24 NEW PRODUCTS
74 NV WEBSTORE
78 TECH FORUM
81 AD INDEX