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November 2015

Nuts and Volts Magazine

Thinking of You. Toy with family and friends.

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Features

Universal Oscillator Topologies and Applications

Explore and analyze several circuits that you can use to make light dimmers, PWM motor speed controllers, model train controllers, heater controls, and a host of other applications.


Beyond the Arduino — Part 7

It’s all in the timers. Timers are very useful in embedded systems, and this discussion covers enough ground to get you up and running using them.



Projects

Monitor Your Christmas Tree Water Level with a Voltmeter and an R-2R Ladder

Holiday

Here’s a quick circuit that will let you know if you need to add water or not to the reservoir for your Christmas tree.


It’s Beginning to Look a littleBits Like Christmas

Holiday

Forget the soldering iron! Grab your box of littleBits and put together these five festive projects that will be sure to get you in that holiday spirit.


Thinking of You

Let friends and loved ones know that you're thinking of them, or your buddies know it's beer o'clock, or the car pool that you're on your way — all with just the push of a button!


GPS Unit for Tracking Coffee

Electronic Gadgets

In this day and age of electronics, you can practically track everything. So, why not apply that to the quality of the coffee sitting in the pot?



Columns

Q&A
by Tim Brown
Reader Questions Answered Here (11.2015)
Automotive battery amp-hour capacity at a slow discharge rate is covered, plus a full Mail Bag.

PICAXE Primer
by Ron Hackett
PICAXE-PC Serial Communication Part 4
PICAXE-PC Serial Communication Part 4. Discover three different approaches to transferring data from a PICAXE project to a PC, then test out the FRAM breakout board being utilized.

Open Communication
by Louis E. Frenzel
EMI/RFI: The Bane of Wireless
Practically every electronic device is both an interference generator and susceptible to interference. Here’s a brief introduction to this natural phenomenon and how to minimize it.

The Design Cycle
by Fred Eady
Make Mine MURS
If you need a radio that can transfer data and control devices over long distances and don’t want the hassle of having to obtain a license, MURS is for you. This month’s edition of Design Cycle will introduce you to the world of Multi-Use Radio Service through the eyes of a NiM1B VHF radio mounted on a narrow band evaluation kit carrier board.

The Ham’s Wireless Workbench
by H. Ward Silver
Protecting Inputs and Outputs
If you’re taking your equipment out into the field, you’re gonna want to make sure it’s protected from any “glitch gremlins” that might be lurking about.