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Communication over DC with two wires

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kuropatula

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Hey!
I am wondering if there is any way to transmit serial data (RS232) without using more wires. My power supply is a battery (DC) and I want to know if there is any way of sending serial data through the power supply wires.

Regards!
 

I don't think that it works without modulation, similar to PLC (power line communication) techniques.
 

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