AUTO-MUTE FOR CAR AUDIO DECK


The aim of this project is to create a system which automatically mute the car audio system while taking your cell phone.

WORKING
A sensitive IR transmitter and receiver pair is designed and fixed to a cell phone holder. Always the cell phone should be placed in the holder.The transmitter unit continuously transmits IR rays. These IR rays are interrupted by the cell phone. Whenever the cell phone is lifted from the holder, the IR rays fall on the receiver and it sends a signal to switching circuit. A relay is driven by a relay driver circuit and the relay opens the deck speaker wires and the audio will be muted.After the completion of the conservation, the cell phone should be kept back in the holder. Again the IR rays will be interrupted and the relay will be de-energized. Music will be played again normally.


Download full project with circuit diagram 

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