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www.elektor-magazine.com
January & February 2015
|
No. 457 + 458
magazine
SUPER-SIZE WINTER EDITION
132
pages of inspiring diy electronics
Experimenter’s Function Generator ● T-Board Wireless ●
EveryCircuit App ● Sounding Logic Probe/Tester ● From
8 to 32 bits: ARM Microcontrollers for Beginners (1) ●
J²B
Synthesizer
An
open-minded
digital music platform
With
Free L
ive
Webin
ar
USBprog 5.0 ● VariLab 402 (3) ● Stepper or Servo Drive
for Vintage Dials ● Video over Fiber● Digi-Disco 1978 ●
CC2-eBoB ● EveryCircuit App ● Bluetooth Thermometer
Contents
magazine
Visit Elektor @
Nurnberg, Germany
February 24-26
Hall 5, Booth 288
News
8 electronica 2014 Impressions
The hectic at the Elektor booth
captured in words and pictures.
Projects
10 J2B Synthesizer
Based on Soulsby’s Atmegatron
concept, this synthesizer is built
around an ATmega328 8-bit AVR
microcontroller from Atmel, the
same that is at the heart of the
Arduino Uno board. We wouldn’t
say this synthesizer sounds musical
in the first place—it can, but also
expect unpolished sounds.
the brains, and was co-inspired
by another Elektor blockbuster
publication, the insightful AVR
SDR project series printed back in
2012. It is usable for applications
like signal tracing, clocking of MCU
and digital circuits, basic audio
filter & loudspeaker testing, tuning,
you name it.
low, especially with the SAM D20
Xplained board.
48 T-Board Wireless
Adding a wireless module to a proj-
ect can come in handy when you’re
working on a circuit design, for
example on a breadboard. For this
we have developed a convenient
T-Board that is suitable for various
types of wireless module.
30 VariLab 402 (3)
In this closing installment we look
at software structure and the way
it got designed, also in relation to
design choices. The final assembly
of the PSU is also discussed.
51 Better Accuracy from the LM317
Get the good old LM317 to produce
a very accurate output voltage.
38 From 8 to 32 bits:
ARM Microcontrollers for
Beginners (1)
There’s nothing frightening or
daunting about microcontrollers
with an ARM architecture.
Those with a little expe-
at
boards
rience with 8-bit devices
1K
orized
an Elekt
will find this new course
price
exciting and easy to fol-
56 Stepper or Servo Drive for
Vintage Dials
What’s stopping you from equipping
old needle-pointer instruments with
state of the art innards? By doing
so you combine functionality with
aesthetics.
22 Experimenter’s Function
Generator
The DIY instrument described here
employs Elektor’s Platino board as
56 GestIC & 3D Touchpad Workbook
(2)
One of the nerdiest games out
there is 2048. Using the Microchip
4
|
January & February 2015
|
www.elektor-magazine.com
Volume 41
–
No. 457 + 458
January & February 2015
DesignSpark
90 DesignSpark Tips & Tricks
We look at multiple devices inside
components, like logic ICs.
97 Transistor Tetrodes
Weird Components—the series
Labs
92 Microchip Hillstar DevKit
Walkaround
From opening the box to a fully
working gesture control system.
94 CRIS-AMP Audio System
Exploring an audio amplifier project
presented on the elektor-labs
website.
96 The Programmer @ Elektor Labs
Elektor Labs firmly answers FAQ
#23b: what programmer are u
using?
Review
110 EveryCircuit App
MGC3110 we get to play 2048 on
the Raspberry Pi.
web interface.
Design and analyze electronics
without touching a soldering iron.
89 Tristate Level Shifter
Convert 3.6 volts swing to 5 volts.
58 CC2-eBoB
Like so many modern components
the wonderful ChipCap2 humidity
and temperature sensor is a night-
mare to solder. Here’s help.
98 USB Chipcard Reader
This absolute bare bones interface
allows a PC RS232 port to talk USB
to chipcards.
Industry
116 News & New Products
64 Bluetooth Low Energy
Wireless Thermometer
Here we link Laird’s BT600 ther-
mometer to our iPhones and smart-
phones—wirelessly of course!
101 DIY LED Flashlight
This flashlight is fun to build and
more energy efficient than anything
off the shelf.
Magazine
120 Retronics: Digi-Disco (1978)
Reminiscences of a TTL user doing
a great job entertaining Highschool
kids in the late 1970s. Series Edi-
tor: Jan Buiting.
72 The Art of Bulb Planting
Here’s a few novel uses for the high-
ly underrated and almost forgotten
incandescent lamp, a.k.a. bulb.
104 Beep
For logic high/low checks sounds
are easier to interpret than rolling
digits on the DVM.
108 Tiny Test Transmitter for FM
An usual and dirt cheap approach
to making an FM transmitter
76 Video over Fiber
Do consider using optic fiber
instead of coax for cable runs lon-
ger than about 300 feet.
124 Hexadoku
The Original Elektorized Sudoku.
108 FM Synchro Receiver
Ditto, for the associated receiver.
125 Gerard’s Columns:
Crackpots versus Iconoclasts
130 Upcoming in Elektor
A sneak preview of articles on the
Elektor publication schedule.
84 USBProg 5.0
This extremely versatile program-
mer is fully open source and has a
113 RTC Modules from Micro Crystal
Remarkably, these RTC chips have
the xtal on-chip.
www.elektor-magazine.com
|
January & February 2015
|
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