The Crazyflie 2.1+ is a versatile open-source flying development platform that only weighs 27g and fits in the palm of your hand. 

Crazyflie 2.1+ is equipped with low-latency/long-range radio as well as Bluetooth LE. This gives you the option of downloading our app and using your mobile device as a controller or, in combination with the Crazyradio 2.0, using your computer to display data and fly with a game controller.

The Crazyflie 2.1+ version of the successful Crazyflie 2.X development platform comes with upgraded battery and propellers for up to 15% improved flight performance. Together with an extensive ecosystem of software and deck expansions, it's ideal for education, research and swarming.

Features:

• Durable design
  
• Easy to assemble and no soldering required
• Supports expansion decks with automatic detection
• Supports flying from iOS and Android with Bluetooth LE, as well as from Windows/Mac OSX/Linux with the Crazyradio, Crazyradio PA, Crazyradio 2.0
• Tested to further than 1 km radio range line-of-sight (LOS) with the Crazyradio PA
• Wireless firmware updates
• On-board charging via standard uUSB
• Dual-MCU architecture with dedicated radio/power management SoC for advanced applications
• Real-time logging, graphing and variable setting in addition to full use of expansion decks when using a Crazyradio, Crazyradio PA or Crazyradio 2.0 and a computer

Documentations:

• Datasheet
  
• Schematics

Package Includes:

• 1 x Crazyflie 2.1 control board
  
• 1 x 250mAh LiPo battery (spare part)
• 5 x 7mm DC coreless motor (1 spare) (spare part)
• 6 x 7mm motor mounts (2 spare) (spare part)
• 1 x Foam battery pad
• 5 x CCW propellers (3 spare) (spare part)
• 5 x CW propellers (3 spare) (spare part)
• 1 x Battery holder deck (spare part)
• 2 x Short male deck connectors (spare part)
• 2 x Long male deck connectors (spare part)
• 1 x micro-USB cable (48cm) (spare part)