22 June 2007

As well as the new PICAXE 14-M introduced over the past few pages, Revolution Education Ltd, the UK based developers of the PICAXE system, have been hard at work for the last few months. Clive Seager talks us through the latest PICAXE developments.

17 June 2007

A cheap, adjustable design that lets you switch devices on and off according to speed.

15 June 2007

There's a new kid on the block! He's from the rapidly-growing PICAXE family (now with 11 siblings!) and goes by the name of 14-M. If you're a PICAXE fan, Stan wants you to meet him 'cos he's really friendly - especially if you already know his younger brother, 08-M!

11 June 2007

The Programmable Ignition System would not be complete without the addition of engine knock sensing. This Knock Detector is useful for adjusting ignition timing maps and can also automatically retard the ignition timing if engine knock is detected.

10 June 2007

Spot the speakers in the above home theatre photo. Can't see them? Think they're Gone With the Wind? You're right: they are!

08 June 2007

In Pt.2 this month, we present the construction details for matching left and right channel mirror-image modules, together with the circuit and construction details of the power supply.

06 June 2007

Interesting circuit ideas which we have checked but not built and tested. Contributions from readers are welcome and will be paid for at standard rates.

02 June 2007

There were lots of interesting products at this year's show.

28 May 2007

Interesting circuit ideas which we have checked but not built and tested. Contributions from readers are welcome and will be paid for at standard rates.

26 May 2007

The short term frequency stability of the GPS-Based Frequency Reference described in the March and April issues can be improved with some circuit changes, as described here. It's also quite easy to add an RS-232C serial output, so the NMEA data stream from the GPS receiver module can be fed out to a PC for other purposes.