42 My Christmas Can Light Dimmer
Since I wasn’t going to be able to replace my
incandescent icicle lights with new LED versions,
I needed a way to extend their life.
■ By Frank Muratore
28 Construction of a Low Budget
46 The Good, the Bad, and the HexBright
Follow Christian’s journey with Kickstarter for his
Arduino-based flashlight that finished in the
top 10 most funded projects.
180 MHz RF Sweep Generator
■ By Christian Carlberg
Sweep generators have a lot of uses in the design,
prototyping, and troubleshooting of amps, filters,
and other circuitry. I wanted one that could speed
up these tasks by presenting several parameters
at the same time. This is the unit I came up with.
■ By Robert Reed
52 MakerPlot — The DIY Software Kit
38 Build a Wireless Silent Alarm
This time, learn how to connect your
microcontroller to the software to plot a single
channel of analog data. Plus, see how to scale raw
ADC data into corresponding voltage levels so you
don’t have to do math inside your micro.
■ By John Gavlik and Martin Hebel
This is an inexpensive transmitter
/receiver system you can build in
one night that will let you know if
something is amiss.
■ By Roger Secura
0 6 DEVELOPING
Not Your Father’s
07 READER FEEDBACK
08 TechKnowledgey 2013
24 NEW PRODUCTS
Events, Advances, and News
Light-emitting pasta, Intel + Arduino = Galileo,
a DC meter suitable for battery monitoring, and an
IEEE conference in Vegas are just some of the
highlights from this month’s selection.
Programming • Hardware • Projects
Arduino Handheld Prototyper — Part 6.
Sharpening Your Tools of Creativity
The Ins and Outs of Python Programming.
Start off with a few Python experiments with digital
inputs on the Raspberry Pi, then implement a
Cylon Eye project to continue our quest of
interfacing the PICAXE with a Pi.
It’s a wrap with data logging. Learn how to upload
sensor data directly to a PC — first, via the serial
port and then using an SD card.
68 Open Communication
The Latest in Networking and
Reader Questions Answered Here
Wireless Watches Will Win the
Bandpass filters, 12 volt control, and NiCad battery
chargers are asked about and answered this time.
Even though cell phones have encroached on the
time-keeping arena, you may want to rethink the
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4 December 2013