Circuit Project Electronic

Bluetooth headphones are such a great idea, but I haven’t seen any that are light enough to take to the gym until now. I came across Motorola’s S9 Bluetooth headphones at CES, and was surprised by how good they sound. These behind-the-ear active headphones are water-resistant and include integrated touch controls that allow you to [...]

Source :: http://www.national.com/pf/LM/LM324.html
Features

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Internally frequency compensated for unity gain

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Large DC voltage gain 100 dB

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Wide bandwidth (unity gain) 1 MHz (temperature compensated)

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Wide power supply range: Single supply 3V to 32V or dual supplies �1.5V to �16V

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Very low supply current drain (700 �A)-essentially independent of supply voltage

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Low input biasing current 45 nA (temperature compensated)

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Low input offset voltage [...]

Source :: http://tech.yahoo.com/blogs/null/93

Nextel’s been putting GPS receivers in its cell phones for years. Now you can finally do something useful with that receiver: Broadcast your location in real-time, thanks to Mologogo, a free service.
The requirements are pretty specific: You need a Nextel (or Boost) phone, Java, and a GPS receiver on the handset (a list of [...]