Hello, I am working on a project for which I require sending an audio signal via bluetooth to a bt compatible car stereo system. For this I am using an Arduino UNO along with the RN-52 I/RM bluetooth module. Also, I have a GSM shield mounted on the arduino for a different purpose (SMS).
After making the hardware connections (Tx and Rx) between the bluetooth and the UNO/GSM Shield, the RN52 was able to power on. After turning it on, the LED indicators showed that it was discoverable, discovered, and even connected to my phone's bluetooth.
HOWEVER, once i opened the Arduino serial monitor to see if it was really functioning properly, the monitor showed a bunch of random characters and symbols which didn't resemble anything which was supposed to show up (AT commands), and it would perpetually show this until i disconnected. What is the problem?