The Crazyflie 2.0 is a solderless development kit that needs to be assembled before it's used. Please read through all the instructions on this page before assembly and make sure to follow them.

The Crazyflie 2.0 kit contains the following items, including spare parts:

• 1 x Crazyflie 2.0 control board with all components mounted
• 5 x CW propellers
• 5 x CCW propellers
• 5 x Motor mounts
• 1 x LiPo battery (240mAh)
• 5 x Coreless DC motors
• 2 x Short expansion connector pins (1×10, 2mm spacing, 9mm long)
• 2 x Long expansion connector pins (1×10, 2mm spacing, 14mm long)
• 1 x Battery holder expansion board

To assemble the Crazyflie 2.0 you won't need any tools, but you will need the following equipment:

• A device to connect to the Crazyflie 2.0 with, either a Crazyradio (PA) with the client or a mobile device with one of our apps
• A uUSB cable to power the board

All the Crazyflie 2.0 control boards go though extensive testing before leaving the factory. But to make sure that nothing has happened with the unit during shipping, the first thing you should do before starting assembly is to test it. When the Crazyflie 2.0 powers on it will run a series of self-tests that covers most of the critical hardware. The tests result of the tests will be indicated using the on-board LEDs. To test the radio parts, you should also connect the Crazyflie using a Crazyradio (PA) or a mobile client. The steps that should be performed are the following:

• Unpack the Crazyflie 2.0 control board and connect it using a uUSB cable.
• The M1 LED will now blink 5 times fast to indicate the result of the self tests. If the LED blinks green, the tests are ok. If the LED blinks red, the tests has failed.
• Now connect a client to the Crazyflie. If the connection is successful then the Crazyflie 2.0 is ready for assembly. But if these tests do not pass, then contact the retailer where you purchased the unit.

1. Make sure that the packet contains all of the parts and that you have tested the circuit board. If there's any problems then please contact the retailer where you purchased the Crazyflie 2.0.

2. Twist the wires of four of the motors and insert them into the motor mounts. Make sure that the cable of the motor is inserted into the gripping groove that's underneath the motor mount.

3. Slide the motor mounts onto the 4 wings of the Crazyflie 2.0 and connect them. It doesn't matter what motor you attach where. Make sure that the wing goes all the way into the motor mount to fasten it firmly.

4. Attach the propellers to the motors according to this image. Click the images for a larger version if needed.

5. Connect the battery and place the battery holder on top of it to keep the battery in place.

6. Ready!