by Bryan Bergeron, Editor
January 2009
Want to test the extent of your knowledge of applied electronics? Then try designing a home recording studio. Thanks to the affordable music recording and playback devices you can have fun creating your own music. Moreover — from an electronics enthusiast’s perspective — a home recording studio is a place where you can apply your creativity. However, designing and then getting the most out of a home recording studio requires a considerable understanding of electronics, from power supplies and digital signal processing to acoustics.
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The new PR4404 from PREMA Semiconductor is a LED driver providing more than 150mA out of one battery cell and up to 300mA from two batteries for one to three power LEDs. A hold input allows controlling the LED brightness via a PWM signal or switching the LED from a microcontroller.
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Probo may look like a simple cuddly toy, but this little piece of green artificial intelligence is no toy.
Several years in the making and a huge investment by the Brussels region, the project of the Robotics and Multibody Research Group at Vrije Universiteit Brussel (Brussels Free University) is a fully-functioning robot with the ability to read your emotions and respond in kind. Called Probo, the 60-centimetre tall “huggable robot” will debut at the end of this year in the children’s ward of the university hospital.
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For about $30 in parts for the core amplifier and a weekend of soldering, you can enjoy premium audiophile sound through your MP3 player or iPod.
Subscribers can read this article in Nuts & Volts online!
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