Tuesday, June 23, 2009


Updated FM bug

Click image to zoom in

What a little beauty!

Upgraded so that it runs off a single 9V battery. The lower left-hand corner of the photo contains the transistor amplifier circuitry, and the top-right corner contains the RF stage which is pretty much the same as version 1.

Powerful enough to transmit the music coming out of my Mac in the cellar laboratory up two floors to the first floor (haven't tried it in the attic gym yet!)


MWAH ha ha!

Click the image to zoom in

Here's the prototype low-power 1.5v FM bug transmitting on 107.05MHz FM.

Think I'll modify it to two transistor stages to pick up quieter signals next...

Tuesday, June 16, 2009


Open source hydrogen cars

Very interesting article on the BBC web site...

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While there wasn't as much overtaking as in the World SuperBike race of yesteryear between Colin Edwards on the Honda and Troy Bayliss on the Ducati, last Sunday's race and Rossi's last corner overtaking manoeuver was just brilliant.

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