Arduino reads hc-05 device connecting status Hello I want to get an arduino get status of bluetooth hc 05 if connect with device or not . I'm trying by myself and search on internet website but I can't find useful things.
In hc05 there is led that shows you Bluetooth is paired or not. In datasheet it says that connected the PIO9 pin. You can connect this pin to arduino's digitial input pin. After that you can understand is it paired or not. 

AT+BIND? gives you which device you currently paired.