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4 February 2016
24 Build a Digital Decade Box
Having the right tool makes any job easier. Here is a
decade box where you can select the required resistance
with a couple of switches — without having to go to the
inconvenience of hooking up an ohmmeter to see the
actual resistance value.
■ By Roger Secura
28 Build a Fun Wind Speed
Tracker with a Raspberry Pi
I’ve enjoyed tracking wind speed for years with my Davis
weather station. However, the tiny plot on the station’s
LCD screen is not very resolved and I want it to be a
whole lot better. The solution: a Raspberry Pi!
■ By David Goodsell
34 The Remarkable CSS555
The CSS555 is a micropower programmable version of
the 555 family of timer ICs. It operates at a current under
5 μA and a supply voltage from 5.5V down to 1.2V. These
qualities make it particularly well-suited for long lasting
battery and small solar powered projects.
■ By James Senft
38 Why You Need an Analog
Front End and How to Set It Up
The analog input to an Arduino Uno has a resolution of
only 10 bits. On a 5V scale, this is only about 1 mV of
sensitivity. If you need more sensitivity, don’t look at
another microcontroller. Look at adding an analog front
end to your Arduino.
■ By Eric Bogatin
February ’ 16 Subscription Information 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
Reader Questions Answered Here
Questions on Cat- 5 cabling are answered, plus the
mysteries of electronic filters are explained.
14 PICAXE Primer
Sharpening Your Tools of Creativity
Building a Simple Data Logger
Implement a simple 08M2 based data logger that
monitors and records the real time temperature of a
46 The Design Cycle
Advanced Techniques for Design Engineers
ARMed and Dangerous
If you’ve ever written code for any other microcontroller,
you can write code for an ARM microcontroller. This
month, we’ll ARM ourselves with some top-notch tools
from Segger and load up an STMicroelectronics’
STM32F0308-DISCOVERY with the code we write.
52 Near Space
Approaching the Final Frontier
North American/Guatemala Near Space Alliance
Near space encompasses the entire planet. Therefore, it’s
not surprising to hear that amateur radio operators in
other nations are running their own programs. When an
amateur radio operator from Guatemala asked for help in
kicking off his first launch, the near space community
couldn’t resist but help out.
55 Practical 3D Printing
Real World Uses for Electronics Experimenters
Breadboard Base with Sidecar Supports
I almost always test out my circuit designs on a
breadboard. Unfortunately, there are many times I’ve
connected to a board that doesn’t plug into a breadboard,
so the only thing holding it together was the connection
wires. Connection wires as the only support makes
projects difficult to move around. This 3D printed
breadboard base with sidecar supports makes projects
58 Open Communication
The Latest in Networking and
The Internet of Things. Who Needs It?
Now that it’s so easy to connect almost every sort of
device or product to one another or to a human via the
Internet thanks to the Internet of Things, should we stop
and think about whether just because we can do
something we should?
Reports of their death
have been greatly
07 READER FEEDBACK
22 NEW PRODUCTS
62 NV WEBSTORE
64 TECH FORUM
66 AD INDEX