I'm not getting the Arduino Mega to recognize the command coming from the sliding potentiometer Microcontroller BT. The remaining commands are OK, but in the case of the potentiometer, the input port configured does not respond. Can you help me?
The official website of Arduino, offers a complete page with instructions on how to use the module and what commands should be sent to the Arduino device. I recommend checking the page. Scroll down and you will have the possibility to click on the documentation links that will lead you to pages where all the commands are explained.
Arduino Bluetooth help: http://arduino.cc/en/Main/ArduinoBoardBT?from=Main.ArduinoBoardBluetooth