How can I make my HC-06 bluetooth device better? [closed]

  arduino, c++, robotics

I have a baby cheetah robot. I make this with arduino, servo motor and HC-06 bluetooth module. This work but sometimes bluetooth module not work. 5-6 minute work then bluetooth module stops. I did it as shown on this site.
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I added a resistor to the device, but still the device turns off after a while. I connected the rx bus of the device to tx and the tx bus to rx. It was shown on the site as follows.

Source: Windows Questions C++