text: #!/usr/bin/env python3
  '''
  Simple test to send characters to flight controller over Bluetooth
  
  Copyright (C) Simon D. Levy 2021
  
  MIT License
  '''
  
  BD_ADDR = '00:06:66:73:E3:E8'
  BD_PORT = 1
  
  import bluetooth
  from time import sleep
  
  sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
  sock.connect((BD_ADDR, BD_PORT))
  
  print('connected to ' + BD_ADDR)
  
  k = 0
  
  while True:
  
          try:
  
              sock.send(chr(k+97).encode())
  
              k = (k+1) % 26
  
              sleep(.01)
  
          except KeyboardInterrupt:
  
              sock.close()
              break
  
  