Название: Elektor
Год: 2013
Месяц: Октябрь
Номер: 10
Формат:DjVu
Язык: Английский
Размер: 6.02 Mб
Elektor - популярный зарубежный журнал по электронике и схемотехнике
Contents
• Community
8 Elektor World
• The Iso-Pi Board
• Xpressly for Audio
• The Next Step: Arduino.next
• Circuit Cellar 'refreshed'
• Animal-Friendly Mosquito Trap
• Projects
10 Xmega Web Server Board
The microcontroller board described here is particularly well suited to
monitoring and control applications. The plug-in TCP/IP module allows
you to implement a web server and other network-oriented applications
and a microSD card provides mass storage. Four LEDs, four buttons,
and a removable display provide the user interface options.
And of course the board comes with a wide range of external interfaces.
22 8x8 Two-color LED Matrix
This article describes an alternative method for driving a matrix consisting
of a large number of LEDs, while using only a few I/O lines from a
microcontroller.
As an example application for this circuit, a small game was developed in
which an LED can be directed across the matrix using a joystick.
30 Numitron Clock & Thermometer
The idea for this project was to take the Arduino world off of its Shields and
Breadboards and out into a world of Elektor DIY projects while also hopefully
appealing to the diehard AVR hackers. These worlds are so close but are so
often treated as separate. The project happily combines today's
microcontroller technology with 1950's Soviet tubes now available 'NOS' from
Ebay.
36 Android Elektor CardiVscope
Here now is the last installment of the article series, concentrating on
calibrating the pre-assembled board. The job is done using a few home built
resistor networks, and dedicated software running on the smartphone.
• DesignSpark
44 Modular RF Link using Manchester Code (2)
Having concluded the hardware side of this project, it's time to go software.
While the proper hardware design and board layout guarantees the correct
radiation and reception of the RF signals, the software (sometimes referred
to as firmware) plays a fundamental role in the reliability of the message
being carried by the signal. We're off to Manchester!
52 DesignSpark Tips & Tricks, Day #4: A Simple Project
Having learned how to set up and use libraries in DesignSpark, we can
proceed with the schematic and circuit board editors. Today we'll make a
simple bi-color LED driver to get the hang of it.
• Labs
56 Getting Started with the LPC800 Mini Kit
The NXP LPC800 Mini Kit sports an LPC810 32-bit ARM Cortex-M0+
microcontroller (MCU) in an 8-pin DIP package, a voltage regulator, two
pushbuttons, an LED and two small prototyping areas. Here are a few hints
to get the board up and running in no time.
60 Negative Energy
How on earth can three series connected 1.5-V batteries persistently
supply ... 1.5 volts?
• Industry
62 News & New Products
A selection of news items received from the electronics industry, labs and
organizations.
• Magazine
68 Retronics:
Heathkit IT-28 Capacitor Checker
The story of bringing a vintage tube checker back to life. The instrument cane
as a set of parts in a box supplied by the greatest electronics kit maker of all
times: Heathkit. Series Editor: Jan Buiting.
74 Hexadoku
Elektor's monthly puzzle with an electronics touch.
76 Gerard's Columns: Breaking the Laws of Physics
A column or two from our columnist Gerard Fonte.
82 Next Month in Elektor
A sneak preview of articles on the Elektor publication schedule.
