Contents

Colophon
Who's who at Elektor magazine.

News & New Products
A monthly roundup of all the latest in electronics land.

Introducing mbed

What's That in the Air?
Here we tackle the theory and methods of real-time oxygen and hydrocarbon compound measurements.

MicroFuel Cell. Measures Oxygen Concentration
A must read and must have not just for divers and cave explorers.

The 5532 OpAmplifier (2)
Besides construction and test results, the closing instalment also covers bridged operation and modification for 4 ohms.

Sensorless. Motor Speed Measurement
A technology is described that enables the speed of an electric motor to be measured by means of an ammeter circuit.

Wireless Instrumentation Network
Add Maxstream and Xbee modules, stir in some Arduino and you have a measurement network with no wires.

Portable Energy
Alternative energy sources for your cell phone, iPod and other gizmos normally operating from rechargeable batteries.

JTAC Live Buzz (E-Labs Inside)
JTAC is increasingly used for boundary scan methods, calling for new IC architectures.

USB port from a g-pin sub-D connector (E-Labs Inside)
FTDI have again come up with the goods!

Rapid Prototyping (E-Labs Inside)
The AutoFab product from Muvium presents a new approach to circuit prototyping.

Image Processing Made Easy
Bluff your way into motion detection with a webcam.

Designing and Making. Basic Antennas
It's surprisingly easy to make monopoles, dipoles and directional antennas for the 2.4 GHz ISM band.

Talk Show (ATM18 series)
VRBot, Speakjet and ATM18 are the main ingredients of an experimental voice synthesizer with a giant 1-pixel indicator thrown in for fun.

Unilab Duo
Here we show how the Unilab bench PSU gets converted into a twin supply together with the September 2010 V/I readout.

Design Tips
LED remote control for RC models Simple IR remote control tester

Camera Interval Timer
A fully programmable timer & multishot controller for photo cameras like the Canon EOS.

Light Tracker
Very likely one of the simplest robotics circuits around that succeeds in finding light sources.

Hexadoku
Our monthly puzzle with an electronics touch.

Retronics: Chauvin-Arnoux MF7. Precision Astatic Wattmeter
Regular feature on electronics 'odd & ancient'. Series Editor: Jan Buiting

Coming Attractions
Next month in Elektor magazine.