# CrazyBee F3 FS
![CrazyBee F3 FS front](images/CrazyBeeF3FStop.jpg)
![CrazyBee F3 FS back](images/CrazyBeeF3FSbottom.jpg)
## Description
CrazyBee F3 FS flight controller is a Highly integrated board for 1S Whoop brushless racing drone.
It might be the world first Tiny whoop size brushless flight controller which integrated Receiver/4in1 ESC/OSD/Current Meter.
## MCU, Sensors and Features

### Hardware and Features

  - MCU: STM32F303CCT6
  - IMU: MPU6000 (SPI) 
  - IMU Interrupt: yes
  - VCP: yes
  - OSD: Betaflight OSD
  - Battery Voltage Sensor: yes
  - Integrated Voltage Regulator: yes, booster, 5V/800mA
  - Integrated Current sensor：Max 14A, could be modified to 28A by replace resistor
  - Integrated Flysky compatible receiver
  - Buttons: 1 (Receiver bind button)
  - Integrated 4x Blheli_s ESC: Max 5A per ESC
  - ESC Connector: 3-pin, PicoBlade 1.25mm pitch
  - Beeper output: 2-pin, soldering pad
  - 4 Rx Indicating LEDs: 2 x red  and  2 x white



## Resource mapping


| Label                      | Pin | Timer  | DMA | Default     | Note                             |
|----------------------------|------|-------|-----|-------------|----------------------------------|
| MPU6000_INT_EXTI           | PC13 |       |     |             |                                  |
| MPU6000_CS_PIN             | PA4  |       |     |             |    SPI1                          |
| MPU6000_SCK_PIN            | PA5  |       |     |             |    SPI1                          |
| MPU6000_MISO_PIN           | PA6  |       |     |             |    SPI1                          |
| MPU6000_MOSI_PIN           | PA7  |       |     |             |    SPI1                          |
| OSD_CS_PIN                 | PB1  |       |     |             |    SPI1                          |
| OSD_SCK_PIN                | PA5  |       |     |             |    SPI1                          |
| OSD_MISO_PIN               | PA6  |       |     |             |    SPI1                          |
| OSD_MOSI_PIN               | PA7  |       |     |             |    SPI1                          |
| RX_CS_PIN                  | PB12 |       |     |             |    SPI2                          |
| RX_SCK_PIN                 | PB13 |       |     |             |    SPI2                          |
| RX_MISO_PIN                | PB14 |       |     |             |    SPI2                          |
| RX_MOSI_PIN                | PB15 |       |     |             |    SPI2                          |
| RX_IRQ_PIN                 | PA8  |       |     |             |                                  |
| RX_BIND_PIN                | PA9  |       |     |             |                                  |
| RX_LED_PIN                 | PA10 |       |     |             |                                  |
| PWM1                       | PB8  | TIM8, CH2 | |             |                                  |
| PWM2                       | PB9  | TIM8, CH3 | |             |                                  |
| PWM3                       | PA3  | TIM2, CH4 | |             |                                  |
| PWM4                       | PA2  | TIM15,CH1 | |             |                                  |
| VBAT_ADC_PIN               | PA0  |       |     |             |      ADC1                        |
| RSSI_ADC_PIN               | PA1  |       |     |             |      ADC1                        |
| BEEPER                     | PC15 |       |     |             |                                  |
| UART3 TX                   | PB10 |       |     |             |      will add pinout soon        |
| UART3 RX                   | PB11 |       |     |             |      will add pinout soon        |


## Manufacturers and Distributors

https://www.banggood.com/Racerstar-Crazybee-F3-Flight-Controller-4-IN-1-5A-1S-Blheli_S-ESC-Compatible-Flysky-AFHDS-Receiver-p-1271331.html

## Designers

## Maintainers

## FAQ & Known Issues

See the same item for [CrazyBeeF3FR](Board%20-%20CrazyBeeF3FR.md#FAQ%20&%20Known%20ssues)

## Other Resources
   User Manual: http://img.banggood.com/file/products/20180225215703Crazybeef3flysky.pdf