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Safety and Regulatory information 

Crazyflie 2.1 was designed by Bitcraze AB Södra Bulltoftavägen 46, 212 22 Malmö, Sweden 
and is assembled in China. 

Disclaimer 

The information in this document is subject to change without notice. Bitcraze AB assumes 
no responsibility for any omissions or inaccuracies and specifically disclaims liabilities, 
losses, or risks, personal or otherwise, incurred as a consequence, directly or indirectly, of 
the use of any of the contents of this document. Please contact Bitcraze AB for the latest 
version of this documentation. 

FCC Statement 

For regulatory identification purposes, Crazyflie 2.1 is assigned a model number of CF21KIT. 
Crazyflie 2.1 FCC ID is 2AUV3CF21KIT. This FCC ID can only be found printed on the 
product box. 
 
This device complies with Part 15 of the FCC Rules. Operation is subject to the following 
two conditions: (1) this device may not cause harmful interference, and (2) this device must 
accept any interference received, including interference that may cause undesired operation. 
 
Changes or modifications not expressly approved by the party responsible for compliance 
could void the user's authority to operate the equipment. 
 
This equipment has been tested and found to comply with the limits for a Class B digital 
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide 
reasonable protection against harmful interference in a residential installation. This 
equipment generates, uses and can radiate radio frequency energy and, if not installed and 
used in accordance with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or television 
reception, which can be determined by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or more of the following measures: 

●  Reorient or relocate the receiving antenna. 
●  Increase the separation between the equipment and receiver. 
●  Consult the dealer or an experienced radio/TV technician for help 

Safety precautions 

Read and follow the this manual before using the Crazyflie. Do not use the Crazyflie if it has 
been damaged. 
 
Handle battery packs carefully. The product contains a lithium-ion polymer battery. 
There is a risk of fire and burns if the battery is handled improperly. 

Summary of Contents for Crazyflie 2.1

Page 1: ...Crazyflie 2 1 kit user manual Document version 1 0...

Page 2: ...mount 5 Attach the propellers 6 Attach the foam pad 6 Attach headers 6 Attach the battery 7 Assembled Crazyflie 2 1 should look like this 7 Power on 7 Getting to know your Crazyflie 8 Start up sequenc...

Page 3: ...ompliance could void the user s authority to operate the equipment This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules...

Page 4: ...ery to extremely low air pressure as this may result in an explosion or leakage of flammable liquid or gas Recycle or dispose of used batteries according to the local regulations or reference guide su...

Page 5: ...nd make the wires fit better in the motor mount hooks Mount the motors in the motor mounts Push the four motors into the motor mounts You will need some force to insert them It is possible to place th...

Page 6: ...th B B1 or B2 the number is irrelevant Also make sure that the correct side is facing up the top side should be convex Here s a detailed view of where to attach CW and CCW propellers Attach the foam p...

Page 7: ...t does Now connect the battery and you are finished with the assembly The battery wires can preferably be bent and placed underneath the PCB to be out of the way Assembled Crazyflie 2 1 should look li...

Page 8: ...nce When the Crazyflie 2 1 is powered on it will automatically go through a short sequence of events to get ready for flight 1 Run self tests the Crazyflie 2 1 checks that the hardware is OK 2 Calibra...

Page 9: ...Put the Crazyflie 2 1 on a level surface and keep it absolutely still to calibrate Radio connected The front left LED 4 is flickering in red and or green Battery low The front right LED 1 is fully lit...

Page 10: ...s The Android client can be downloaded from Google Play https play google com store apps details id se bitcraze crazyfliecontrol2 The iPhone and iPad client can be downloaded from the Apple App Store...

Page 11: ...ch yaw and thrust Roll is the rotation around a horizontal axis going through the quadcopter from back to front This literally rolls the Crazyflie and moves it left or right Pitch is the rotation arou...

Page 12: ...To avoid this particularly when learning to fly use a lot of thrust just when taking off and then ease off for level flight Charging the battery To charge the battery of the Crazyflie 2 1 just plug i...

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