4 October 2016
20 Tricky Train Control with an
This unit lets you use voice control to manipulate your
model train set. Plus, it’s perfect to implement on other
types of projects you’d like to command with your words.
■ By Randy Keenan
30 Build the Toilet Sentinel
Ever have trouble with your flapper not seating properly,
allowing water to continually run? Well, consider that
problem solved with this handy circuit.
■ By Larry Cicchinelli
35 Make Your Own Portable
With a few pieces of hardware and a Raspberry Pi, you
can have a traveling entertainment system that fits in the
palm of your hand.
■ By Craig A. Lindley
40 Choosing an Oscilloscope
Here are 15 tips that can make selecting the appropriate
oscillosocope for your task at hand a lot easier.
■ By Alan Lowne
Reader Questions Answered Here
Our new Q&A columnist, Kristen McIntyre takes on
questions regarding how to build a gate and a case
where battery polarity is not important, plus provides
some needed help with a set of Archer ICs.
14 Open Communication
What’s in the Works for Wireless?
Three technologies are forever changing
Wireless is so ubiquitous these days, that we take it for
granted. However, there are even more things to expect
for/from it in the future.
48 Near Space
Approaching the Final Frontier
My First Near Space Payload to Need an FAA
Don’t know if we were setting a “record,” but there were
some special concerns that had to be met with this
particular secret payload.
52 Practical 3D
Real World Uses for
It occurred to me that the print we
made last time for holding wires to
make them easier to solder could be
modified to become a resistor/diode
tester that would be just as handy to use.
56 The Design Cycle
Advanced Techniques for Design Engineers
Get Up and Running Quickly with BLE
Do you need to communicate with your smartphone using
Bluetooth Low Energy (BLE) but feel that the learning
curve is just too steep? This month, we will examine
Microchip’s new BM70 BLE radio module and all of the
programming tools that come with it. We’ll get you up
and running quickly without any low-level BLE
programming or expensive compilers and programmers.
Nuts & Volts (ISSN 1528-9885/CDN Pub Agree #40702530) is published monthly for $26.95 per year by T & L Publications, Inc., 430 Princeland Court, Corona, CA 92879. PERIODICALS POSTAGE PAID AT
CORONA, CA AND AT ADDITIONAL MAILING OFFICES. POS TMAS TER: Send address changes to Nuts & Volts, P. O. Box 15277, North Hollywood, CA 91615 or Station A, P. O. Box 54, Windsor ON N9A
Nuts & Volts — PO Box 15277
North Hollywood, CA 91615-9218
Call 877-525-2539 or go to www.nutsvolts.com
Subscribe • Gift • Renewal • Change of Info
Self-Monitoring Made Easy
06 READER FEEDBACK
18 NEW PRODUCTS
46 NV WEBSTORE
62 TECH FORUM
65 AD INDEX