Did you consider making your baud rates the same? You initialize your BTSerial on 38400 and serial monitor on 9600. If i were you I would change the serial monitor one to 38400 to match the BTSerial object.
Did you consider making your baud rates the same? You initialize your BTSerial on 38400 and serial monitor on 9600. If i were you I would change the serial monitor one to 38400 to match the BTSerial object.