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Machine To Machine Communications
A Proper Ringing of the Bells
by Chris Watson
See the art of engineering at work when an older system for ringing church bells needed a makeover. Page 41
Design a Customized Security System Using RobotBASIC
by Samuel Mishal, John Blankenship
Implementing a custom security system for your home can be intimidating — unless you have the right software. This article guides you through the basic principles so you can design exactly what will work for you. Page 46
Build the Voltage Mirror
Circuits,
by Jim Stewart
A glass mirror gives an exact copy of an image but with left and right swapped. A voltage mirror gives a copy of the input voltage but with the polarity swapped. Page 28
Build the Mystery Solar Powered Pendulum
Electronic Gadgets,
by David Williams
This device is a wonderful demonstration of clean, green solar power and is based on BEAM technology. It was inspired by the Magbot pendulum project in Dave Hrynkiw’s book titled, Junkbots, Bugbots & Bots On Wheels - which you can buy in the Nuts & Volts Web store! Page 32
Build the Alarm Autodialer
Home Automation,
by Dan Gravatt
This device will detect and report several common failures with household systems, so you can deal with them while they are still easy to fix. It's inexpensive ($60 or less, depending on your parts collection), easy to build, and doesn't require any contracts with monitoring services. Page 36
Techknowledgey
by Jeff Eckert
Events, Advances, and News
Read about a new PC for bottom-feeders, an automotive mystery that gets solved, the vacuum tube as the next high tech breakthrough ... plus some other interesting stuff. Page 10
PICAXE Primer
by Ron Hackett
Further Explorations With PICAXE Temperature Measurement.
In this month's Primer, we're going to continue our explorations of temperature measurement with PICAXE processors, but before we get to that, I want to give you an update on my "Freezer Alarm" project. Page 14
Q&A
by Russell Kincaid
Reader Questions Answered Here
Send all questions and comments to: Q&A@nutsvolts.com Page 20
Smiley’s Workshop
by Joe Pardue
Fritzing With the Arduino — Part 1
Fritzing is a very novice-friendly open software package that you can use to design shields for Arduinos. Even though it is still in beta, it has many very interesting and useful features. Page 52
Open Communication
by Louis E. Frenzel
M2M —Machine-to-Machine Communications
M2M is essentially automatic communications between two “things.” An example is a vending machine sending data to a remote computer indicating that it needs refilling and the money box needs emptying. Page 60
The Design Cycle
by Fred Eady
Putting Basic4android in the Driver’s Seat
I'm a programmer and the Android devices are programmable. If you're interested in plugging into that intelligent Android brick you call a phone, get in the truck. Page 68
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