Elektor №5 2013г

Название: Elektor

Год: 2013

Месяц: Май

Номер: 5

Формат:DjVu

Язык: Английский

Размер: 5.05 Mб 

Elektor - популярный зарубежный журнал по электронике и схемотехнике

CONTENT

• Community
8   Elektor World
     • Whip it Up
     • Return of the Tapir e-smog meter
     • Into the Nerd Cave
     • Elektor Labs opens on Lamington Road, Mumbai
     • Spark your Design
• Tech the Future
70 The Invisible User interface
     There is a strong trend toward usability in industrial design and in

     human-computer interaction. That primarily revolves around efficiency,

     effectiveness, safety and ease of use. In short, the user interface.

• Projects
10 Embedded Firmware Library
     The modular EFL (Embedded Firmware Library) lets you write applications

     and modules that can be easily transferred from one board to another.

     Meaning you are no longer locked in to a single microcontroller

     manufacturer but rather just write for embedded Linux in general.
18 500 ppm LCR Meter (3)
     This month we get practical by covering the LCR Meter's circuit board

     assembly, parts lists, casing, and calibration in just 8 pages.
26 From BASIC to Python
     Python is a high-level language particularly associated with small computer

     systems such as the popular Raspberry Pi. The language is marked by

     clarity and conciseness. Gone are the brackets and semicolons which gave

     headaches in Pascal, С and Java, not to mention BASIC.
32 Taming the Beast (4)
     Once you start using virtually the entire FPGA chip for an application

     written in a hardware description language (HDL), examining the circuit

     inside the chip is difficult at best, so simulation is In order
40 Elektor Linux Board Extension (2)
     In this second and closing installment we look at the hardware and

     software interaction between the buttons and the LC display on the

     board — all with a view to learning how to program a well thought

     out menu.
43 OTA-based Triangular Wave Generator
     Although many applications of OTAs have been described, the basic circuit

     of a non-sinusoidal oscillator exploiting an OTA's specific advantages is a

     rare find. This design brief describes a combined triangular and rectangular

     wave oscillator with two OTA circuits.
46 BaroStick
     This USB barometric pressure sensor uses a Bosch sensor to measure the

     air pressure and temperature, after which this data can be displayed

     graphically and stored using Windows software,
50 Program Like the Professionals
     State diagrams see increasing use in software development. This article

     looks at how you can use them to make your programs more robust and

     free of bugs

• Industry
58 Raspberry Pi: one year later, one million sold
     An interview with Peter Lomas, a hardware designer behind the

     Raspberry Pi computer.
62 News & New Products
• Labs
54 Sorry about my English
     Even if your English is fraught with gramatikall miztakez, do submit your

     project at elektor-labs.com.
56 PCB production pitfalls
     Some issues to consider when wave soldering SMD components.
57 Ceramic C's off the mark
     Here's an intriguing phenomenon concerning the value of 150-pF

     capacitors before and after soldering

• Magazine
74 Retronics: Wandel & Golter-mann NE-171 MultiVoItage

     Tube PSU (ca. 1963)
     This power supply for science labs and radio/TV repair outfits has just

     about everything you can desire or dream of when working with tubes.

     Series Editor: Jan Buiting.
78 Hexadoku
     Elektor's monthly puzzle with an electronics touch.
79 Gerard's Columns: Credibility
     A column or two from our columnist Gerard Fonte.
82 Next Month in Elektor
     A sneak preview of articles on the Elektor publication schedule.