Control Arduino with audio?

I was wondering if it was possible to connect an audio source to an Arduino with a 3.5mm cable (i.e. iPhone) and play different sounds that the Arduino would recognise to carry out different tasks. I have an Arduino Uno.

Thanks

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simon.monk over 14 years ago +1

Yes, it is. I do just that but for Android rather than iPhone in my book 'Arduino + Android Projects for the Evil Genius'. One-way from the Android tablet to the Arduino in my case, but 2-way is possible…
e14 Contributor over 14 years ago +1

You could always build a clap circuit with an opamp to take an audio signal and pull one of the arduino pins high. Then based on the number of times the pin is pulled high it can perform different functions…

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0 fustini over 14 years ago

fyi - you might be interested in this project which used frequency analysis to trigger actions based on whistles (although it's not based on Arduino):

Control your devices by whistling!
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0 fustini over 14 years ago

fyi - you might be interested in this project which used frequency analysis to trigger actions based on whistles (although it's not based on Arduino):

Control your devices by whistling!
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