Connect to Crazyflie 2.x using Bluetooth low energy and both the original Crazyflie and Crazyflie 2.x using the USB Crazyradio dongle connected with a USB OTG cable. Features: * Control Crazyflie and Crazyflie 2.x using Crazyradio on a USB OTG compatible device * Control Crazyflie 2.x using Bluetooth LE 4.0 * Control mode configurable * Control sensitivity configurable * Axis and button mapping configurable (only for game pad) * Control Crazyflie using touch controls * Control Crazyflie using game pad (connected via USB or Bluetooth) * Control Crazyflie using the device's gyroscope * Control LED ring effects (requires Crazyflie 2.x and optional LED ring deck) * Play the Imperial March melody on the buzzer deck (requires Crazyflie 2.x and optional buzzer deck) * Update Crazyflie using Crazyradio (experimental feature, update via BLE coming soon) Please note: This app is designed to control Crazyflie and Crazyflie 2.x. It requires either a Crazyradio, Crazyradio PA or a Bluetooth LE 4.0 compatible device running Android 4.4+. Only Crazyflie 2.x can be controlled with Bluetooth LE. Do not pair the Crazyflie via Bluetooth settings! Distributors for Crazyflie and Crazyradio can be found on our distributor list: <a href="https://www.bitcraze.io/buy/local-retailers/">https://www.bitcraze.io/buy/local-retailers/</a> This app is using JoystickView Widget from mobile-anarchy-widgets (<a href="https://code.google.com/p/mobile-anarchy-widgets/wiki/JoystickView">https://code.google.com/p/mobile-anarchy-widgets/wiki/JoystickView</a>). Contributions are welcome! How to use the bootloader: <ol> <li>The list of firmwares should automatically be filled (make sure you have a network connection!)</li> <li>Select a firmware (make sure you select the right one depending on which Crazyflie you want to update (CF1 or CF2))</li> <li>Flash firmware (For Crazyflie 1, click on "Flash firmware" and switch on the Crazyflie during the next 10 seconds. For Crazyflie 2, press the ON/OFF swi