User guide

User guide

UI

Connecting to the Crazyflie

Crazyradio (Crazyflie/Crazyflie 2.0)

1. Connect the Crazyradio dongle to the Android device with the USB OTG cable.
2. A pop-up dialog should ask you which app you would like to use with the USB device.
3. Select the Crazyflie app (“Crazyflie Client”).
4. When you run the app for the first time, you can scan for the Crazyflie (must be switched on).
   • Preferences button → Connection Settings → Radio Scan
   • Or you can set channel and data rate in the preferences manually
5. Connect to the Crazyflie by clicking on the connect button.
6. If the connection is established, the connect button should have a green background and the green LEDs on the Crazyflie and the Crazyradio should blink rapidly.

Bluetooth Low Energy (BLE) (Crazyflie 2.0)

Please note:

• Your Android device must support Bluetooth LE (Low Energy) 4.0 and run Android 4.4+ (eg. Nexus 4, Nexus 5, Samsung Galaxy S4).
• Make sure that you have not paired your phone with the Crazyflie 2.0 via your phone's general Bluetooth settings, otherwise the app will not be able to connect properly (connection will claim to be successful, but controls won't work).
• The (old) Crazyflie does NOT support Bluetooth LE, only Crazyflie 2.0 supports Bluetooth LE.

1. To start a Bluetooth LE connection just make sure that no Crazyradio is connected.
2. If you have not turned on Bluetooth on your phone you will be asked to turn it on.
3. Connect to the Crazyflie by clicking on the connect button.

• Sometimes it might take a few seconds and it might fail the first time, in that case please try again.

4. If the connection is established, the connect button should have a blue background and the green LEDs on the Crazyflie and the Crazyradio should blink rapidly.

Basic controls

Connecting an external controller

Instead of using the on-screen controls, you can also connect an external controller like a PS3 Controller (or compatible).

There are several possible combinations how this works depending on how you connect to the Crazyflie:

Connection to Crazyflie	Gamepad connection: USB via OTG cable	Gamepad connection: USB via USB hub	Gamepad connection: Bluetooth direct (only Sony phones)	Gamepad connection: Bluetooth with root access and SixAxis Controller app
Crazyradio	No	Yes	Yes	Yes
Bluetooth LE	Yes	Yes	Yes	No

Connect a Playstation Controller over USB

In addition to the USB OTG cable, you'll also need:

• USB Y-Cable
• USB Hub
• PS3 Controller (or compatible joystick/gamepad)

Setup:

1. Connect a USB Host (OTG) adapter to your Android device
2. Connect a USB Y-cable with the USB Host adapter
3. Connect a wall-plug with the (red) power plug of the Y-cable (you need external power)
4. Connect the upstream port of a USB hub with the socket of the Y-cable
5. Plug the Playstation controller and the Crazyradio into the USB hub
6. In the Crazyflie Android app, change the controller to game pad
   • Preferences button → Controller Settings → Controller
7. The Crazyflie Android client should say “Using game pad controller”
8. Press the “PS” button and move the analog sticks (the pitch/roll/thrust/yaw on-screen values should change)

Connect a Playstation Controller (over Bluetooth)

Some Android devices made by Sony, like the Xperia Z1, support the PS3/PS4 controller natively. Otherwise your Android device must be rooted and you need to install the SixAxis Controller app (paid)

1. Use the Sixaxis Controller app to pair and connect the Playstation Controller
   • You might have to press the “PS” button to activate the Playstation Controller
2. In the Crazyflie Android app, change the controller to game pad (if you haven't done so yet)
   • Preferences button → Controller Settings → Controller
3. Press the “PS” button and move the analog sticks (the pitch/roll/thrust/yaw on-screen values should change)

Please note: In general you cannot connect to the Crazyflie 2.0 via Bluetooth while you are connected to the PS3 controller via Bluetooth. It actually does work on certain Sony Xperia phones (e.g. Z2,Z3), because those phones have native support for connecting to Playstation controllers.

Advanced features

Altitude hold

Height hold

LED deck

Buzzer deck

Bootloader

Preferences

Feature support

Feature	Crazyradio	Bluetooth LE
Basic controls	Yes	Yes
Connection quality	Yes	Yes
Battery	Yes	No
Console	Yes	Yes
Bootloader	Yes	No
Altitude/Height hold	Yes	No
Decks (LED, Buzzer)	Yes	No
Param/Log	Yes	No