Connect to FrSky BLE Module telemetry mode and copy data to serial port or convert to LTM and send to serial
Horus X10/X10S Bluetooth Module (in a Radiomoaster TX16)
ESP32 with SSD1306 display for connection status and a "flowmeter" z.b. Wemos ESP32 with SSD1306 Display or Helltec 32 Wifi Kit
Tested with KISS FC/Firmware
needs Adafruit_GFX and Adafruit_SSD1306 lib