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Issue 182
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<< Issue 181 | Issue 183 >>
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Electronic Noses Smell A Big Future
4 Nov, 2003
Don't sniff - electronic noses have a big future, from checking your morning coffee to sniffing out explosives. And they're here now.
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Circuit Notebook
8 Nov, 2003
(1)Making The Flexitimer Cycle On And Off (2)Low Battery Indicator (3)A Simple 9 Way Cable Identifier (4)Clipping Indicator For Audio Amplifiers (5)8V DV Supply With Overvoltage Protection (6)Cheap Switchmode DC-DC Converter.
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A Programmable PIC-Powered Timer
11 Nov, 2003
This PIC-based timer can be set for any period from one second up to 680 days and even (theoretically) up to nearly 60 years.
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Vintage Radio
14 Nov, 2003
The 1953 4-valve Precedent mantel receiver.
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Logging Your Every Driving Moment
17 Nov, 2003
Some airbag controllers do more than just trigger the airbags; they also log your speed and a range of other driving actions.
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The PICAXE - Part 8: The 18X Series
19 Nov, 2003
You've guessed it: the Picaxe 08 chip has several big brothers. Here's a look at the "18A" version, along with a simple temperature sensor.
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Our Best LED Torch... Ever!
30 Nov, 2003
It's based on a Luxeon Star/O 1W ultrabright LED, runs off two "D" cells and blasts our previous LED torches into the weeds!
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Publisher's Letter - 1 Nov, 2003 Serviceman's Log - 22 Nov, 2003
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