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Bluetooth Module HC 05 not working properly

i am using bluetooth module , which is not woking properly...

it sends data to PC what arduino feeds it....!

but it dont transmit data from PC to Arduino..!

link to bluetooth module
http://www.evselectro.com/wireless-bluetooth-transceiver-module-rs232--ttl-base-board-4778?keyword=bluetooth&category_id=0



what is possible solution
 

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I had a problem like this to so what i did was solder wires directly onto tx and rx of the bluetooth. instead of using the headers