Crazyflie Bolt

The Crazyflie Bolt is a Crazyflie 2.X compatible flight controller for brushless builds. It is intended to have the strengths of the Crazyflie 2.1, but in a slightly bit bigger package. It uses the same sensors as the Crazyflie 2.1 and the firmware binaries are compatible with both.

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)
• 3 axis accelerometer (BMI088)
• 3 axis magnetometer (BMI088)
• 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)