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Nuts & Volts is written for the hands-on hobbyist, design engineer, technician, and experimenter. It’s the perfect addition to the electronics DIYer’s arsenal! Each month, you’ll find the tools you need to build your skills and knowledge!

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Current Issue - March 2015

Beyond The Arduino

Recent Comments
re: Reader Questions Answered Here
I also found the oscillator in Mr. Wandishin’s letter of interest (ref your Figure 7).  A bit of internet sleuthing found that (1) the “4584N” is a CD4584 Schmidt trigger (six devices), and that Schmitt triggeers can be used as oscillators—see, for example, A Schmitt trigger is a bistable multivibrator,… ~ LL

re: The Lost Art of Strip Board Prototyping
1.Veroboard has recently become available at Amazon in the US. 2. I prefer creating opens in the traces with a 2.5mm drill instead of scratching with a knife - looks much nicer. 3. A viable alternative are prototyping boards which have the same hole/connection pattern as the plugin-breadboards. Tweak your… ~ Privatier

re: Hack an LED Desk Lamp
Jim, In a Wiki article at: it lists the ratings using 500mA for AA batteries of various types. Let’s assume your LEDs and circuits are 50% efficient for the 12 Volt battery running it up to 20 Volts, so it uses 300mA @ 12V to get the 150 mA… ~ PhilKE3FL

re: Events, Advances, and News (3.2013)
RE: TECH Knowledge 2013, March Pg 10, “Slicing with sound” The photo comment says, “Artificial kidney stone with 150 m opto-acoustically created hole.” That must be some extremely large kidney stone to be able to sport a 150 meter diameter hole! I hope it’s not a 150 meter radius hole!… ~ PhilKE3FL

re: Build Your Own PIC Trainer from Surplus
Hi, Thanks for the interest in the Trainer. I design all my own PCBs with an archaic program (runs under Windows 3.1!) which doesn’t support Gerber or other exports. So, sorry, but I can’t help you out. I’ve always just etched my own boards with a homemade affair, using PnP… ~ Thomas_Henry

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  • A Blueprint for Embedded Wi-Fi

    Last month, we discovered that the Numbat Wi-Fi module on the Moray development board can take care of itself in the wild. However, you can’t Wi-Fi in the woods if you have to be attached to the USB port of a laptop. This month, we will replace the USB cable, laptop, and terminal emulator with a simple PIC microcontroller and some tricky CCS C code. Read More...

  • New Short-Range Wireless Standards Target IoT Applications

    Now, it is easier than ever to connect devices over the Internet with the features available in upgraded versions of Bluetooth and ZigBee. Read More...

  • Oscillators

    Every signal begins with an oscillator — which is a key element in ham radio to generate, mix, and extract the info from these signals. This time, see how to make an audio oscillator, plus learn about common RF types. Read More...

  • USB-to-Serial Adapters Revisited

    Explore a hardware solution that allows you to use a wide variety of relatively inexpensive USB-to-serial adapter cables in PICAXE breadboard projects. Read More...

  • Reader Questions Answered Here (03.2015)

    Find out how to fix burn marks on LCD screens and whether or not to go with CFLs or LEDs. Read More...