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Author Topic: Bluetooth Module HC 05 not working properly  (Read 985 times)
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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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If anyone can answer?
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I don't think you connected the grounds, Dave.
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You bump a post after less than twenty minutes?  smiley-eek
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Are you using software serial for the BT module? Is your arduino powered with USB lead or power connector? What code are you using to read/write to PC over BT module (remember to post any code between code tags)
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There is no such thing as a stupid question but there are a lot of inquisitive idiots.

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Code is working fine with normal arduino Serial Communication thru FTL 232 (onboard USb-Serial) . I am using NANO.

But when it comes on Bluetooth module , Data sent from Arduino is recived on PC thru Bluetooth .... But no data is sent to Arduino from PC thru Bluetooth Module
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Try using software serial to send/receive from BT module to see it that works. I never had much luck trying to connect BT modules to UART RX/TX pins when powered over USB, I think the FTL232 interferes.
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There is no such thing as a stupid question but there are a lot of inquisitive idiots.

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