Features
Firmware compatible with Crazyflie 2.1 and Crazyflie Bolt
Supports expansion boards with automatic detection
Integrated radio with dual antenna support (no firmware support yet)
Wireless firmware updates
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 boards when using a Crazyradio or Crazyradio PA and a computer
Integrated power distribution (max 8A / motor)
Low latency IMU connection
Low power mode (down to 50uA) in sleep
Mechanical specifications
PCBA size (WxHxD): 35x9x42mm (including connectors but not battery wire)
Weight: 7.3 g (PCBA only), 9.2 g (PCB + battery cable)
Battery cable length: 50 mm
ESC cable length: 60 mm
Antenna length: 150 mm
Standard mounting (M3 mounting holes spaced 30.5 mm in square)
Electrical specifications
Voltage input 1S-4S (3V to 17V)
Deep sleep consumption down to 50 uA
Radio specifications
2.4GHz ISM band radio
20 dBm radio amplifier
Bluetooth Low Energy support with iOS and Android clients available (tested on iOS 7.1+ and Android 4.4+)
Dual antenna support (2 x uFL connector)
Microcontrollers
STM32F405 main application MCU (Cortex-M4, 168MHz, 192kb SRAM, 1Mb flash)
nRF51822 radio and power management MCU (Cortex-M0, 32Mhz, 16kb SRAM, 128kb flash)
uUSB connector
Full speed USB device interface
Partial USB OTG capability (USB OTG present but no 5V output)
8KB EEPROM
IMU
3 axis gyro (BMI088 connected via SPI)
3 axis accelerometer (BMI088 connected via SPI)
high precision pressure sensor (BMP388)
Supported clients/controllers
Win/Linux/OSX python client
The gamepads used by the Xbox 360 and the Playstation 3 are used as reference controllers
Any gamepad/controller with at least 4 analog axes
Android mobile device
iOS mobile device
Interfaces
1 x Full speed uUSB
2 x Crazyflie expansion connectors (see blow)
2 x u.FL connectors
4 x ESC connectors using PWM / OneShot125 (JST-PH)
1 x XT30 battery connector
Expansion connectors
VCC (3.0V, max 100mA)
GND
VCOM (5V, max 400mA)
VUSB (both for input and output)
I2C (400kHz)
SPI
2 x UART
4 x GPIO/CS for SPI
1-wire bus for expansion identification
2 x GPIO connected to nRF51
Package contents
1 x Crazyflie Bolt (with battery cable attached)
1 x External antenna (with u.FL connector)
4 x ESC connector cables
2 x Short male deck connectors (spare part)
2 x Long male deck connectors (spare part)