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Hello from Malaysia - 4 Channel Audio Project

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I'm hoping to build a 4 channel motion activated sound effect system. I'm thinking of using IR motion detector to trigger start of sound effect. The system would send same sound to 4 channels but at different volumes. To compilcate things I'd like wireless speakers, either bluetooth or wi-fi.

I've done a lot of googling and It lookslike it might be possible with Rasberry PI, not sure about wireless bit though. Any suggestions where to start would be greatly appreciated.


Thanks Colin

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