02 September 2011

Ever since Philips Lumileds created the high power LED over 10 years ago, the rapid advancement and development of solid state lighting components has facilitated exciting new applications and innovations. If we gaze around our environment, we notice just how wide. spread the use of LED technology has become.

25 August 2011

Last month we introduced our Rudder Position Indicator, which uses a 433MHz wireless link to show the direction a power boat’s rudder is pointing. This month we provide detailed instructions for building and testing both units as well as mounting the sensor unit in the boat.

19 August 2011

The Ultra-LD Mk.3 amplifier module introduced last month is by far our lowest distortion Class-AB amplifier design. This month, we present the construction details and give some additional information on its performance.

15 August 2011

We’ve looked at 3D printers in the past but this one is different - you can buy it right now and have it up and running an hour or two after it arrives. You can design objects with 3D CAD software and then watch as they're turned into "the real thing" before your very eyes!

13 August 2011

Interesting circuit ideas which we have checked but not built and tested. Contributions will be paid for at standard rates. All submissions should include full name, address & phone number.

11 August 2011

This project is really on the . . . errr . . . level. It's an inclinometer, an electronic version of the old spirit level except that this one gives a digital readout of the angle of any flat surface in 0.1° increments from 0-360°. A MEMS accelerometer chip, as found in tablets and smart phones, is at the heart of the project.

09 August 2011

We review the Hakko FA-430 fume extractor: what a clever little sucker!

05 August 2011

Need to do a bit of self-diagnosis? Make sure your heart is still beating or check other body sounds? Maybe you would like to sort out some unusual rattles or other noises in your car's engine or other machinery? This electronic stethoscope will do the job – and you can listen via headphones or a loudspeaker. It has switchable frequency shaping in four bands so you can hone in on sounds which might otherwise be masked out.

03 August 2011

With the exception of the Apple iPad, few new computers of any description have caused so much comment, so much anticipation and so much demand as the just-released ASUS EeePad Transformer. We just had to get our hands on one for a few days - not easy! - to find out what the excitement was/is all about.

23 July 2011

Part 1