That app Ultimate Bluetooth Joystick - UBJ has been developed to control your car / toy / robot through the Bluetooth HC05 HC06 ESP32 and others. It is completely settable and easy to use. Besides controlling it you can watch to your webcam in your mobile. Just imagine you controlling your BlueTooth device that is in another room and watching what a webcam installed the is broadcasting. All this in an easy and funny way. Download it now!