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!)

# posted by Mark @ 6/23/2009 08:17:00 pm 0 comments

 

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...

# posted by Mark @ 6/23/2009 10:00:00 am 0 comments

Tuesday, June 16, 2009

 

Open source hydrogen cars


Very interesting article on the BBC web site...

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# posted by Mark @ 6/16/2009 09:13:00 pm 0 comments

 

MotoGP


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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# posted by Mark @ 6/16/2009 08:38:00 pm 0 comments

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