Technology enthusiast and instructables member zmashiah has created a nifty project that can help save energy and equipment wear and tear. By monitoring the audio feed going to an amplifier, an Arduino can then turn the power off when the amp hasn't received a signal for a set period of time - in effect, making an automatic shut down. Furthermore - when the amp is off and a source starts playing, the Arduino can turn the amp back on. Finally no mains current wiring is required as the control is via infra-red.
For more information, the schematic and Arduino sketch click here. And we're on twitter and Google+, so follow us for news and product updates as well.
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