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Test The Salt Content Of Your Swimming Pool
05 December 2008
Do you have a swimming pool with a salt-water chlorinator? Then you will know that you have to periodically add salt to the water to make sure that the chlorination process works properly. So how do you measure salt content in your swimming pool?
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Circuit Notebook
30 November 2008
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.
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IrDA Interface Board For The DSP Musicolour
29 November 2008
Most PCs and laptops now offer an IrDA interface to enable communication without any physical connection. Now you can have the same facility for the DSP Musicolour - or for virtually any other microcontroller project.
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50 Years Of The Integrated Circuit
27 November 2008
Its hard to imagine a world without the integrated circuit, just as it is hard to imagine a manufactured product without one! But the IC has only been with us for half a century, being first demonstrated on September 12, 1958.
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USB Clock With LCD Readout, Pt.2
25 November 2008
Last month, we detailed the circuit of the
USB Clock and showed you how to build it. This
month, we detail the software installation and describe how it is used. We also describe how to synchronise your PC to an internet time server and how to synchronise the USB Clock to the PC each time the PC boots up.
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Review: Jaycar's Sun-In-A-Box Solar Lighting Kit
23 November 2008
Going bush? Living on a desert island/houseboat/mountain top?
Sick of energy bills? Daily supply charges driving you crazy?
Want to run extra wiring for decent shed lights but find that's illegal? Even considering DIY by running a backyard generator instead? Read on - "CIGnificant" solar help may be at hand!
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How Oxygen Sensors Work
21 November 2008
The oxygen sensor is an important component in your cars engine management system. It monitors the oxygen content in the cars exhaust, to indicate whether the mixture is too lean or too rich. Heres a quick rundown on how the two basic types work.
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Wideband Air-Fuel Mixture Display Unit
19 November 2008
This Wideband Oxygen Sensor Display can show your car's air-fuel ratio as you drive. It's designed to monitor a wideband oxygen sensor and its associated wideband controller but could be used to monitor a narrowband oxygen sensor instead. Alternatively, it can be used for monitoring other types of engine sensors.
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