New to working with arduino and am working on a group design project for engineering school. The issue we are encountering is that are Bluetooth chip (HC-06) will send messages back to a pc but doesn't seem to be receiving commands when they are sent. PC device manager shows this is using 2 ports (one for tx and the other for rx) is this normal? For the time being, we are simply trying to set a pwm signal to flash an LED to show that we are communicating. Any thoughts or ideas would really help. Thanks.