SpeedyBee BT Nano 3

SpeedyBee BT Nano 3 is a miniature Bluetooth module for wireless serial data transmission. This becomes particularly useful when connecting the module to the UART on the flight controller. All settings can then be made wirelessly from a computer or phone via the SpeedyBee app. When used with Betaflight or iNav, the Bluetooth module automatically shuts down after Arm so it doesn't interfere with other components on the drone. For other applications there is a pad on the board to turn the module off/on. The module is 14x11x2mm and weighs 5 grams. So it fits easily into a conventional freestyle drone. The Bluetooth module can be password protected and you can set a own name for it, so you always know which drone it is.

To get the Bluetooth module working, just connect it to any UART and enable Configuration/MSP in Betaflight configuration.