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What Voltage/Current Levels Can I Send Into the Microphone Input on a Mobile Phone?

I have a device that is sending 9600baud using only Tx, Rx, and Gnd. I am not sure, but I think the voltage is either the 3v or 5v level. I want to receive that serial data on my mobile phone. I ...

asked Jan 26 '12 at 19:24

jmsmcfrlnd
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What Voltage/Current Levels Can I Send Into the Microphone Input on a Mobile Phone?

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