2 ![CrazyBee F3 FS front](images/CrazyBeeF3FStop.jpg)
3 ![CrazyBee F3 FS back](images/CrazyBeeF3FSbottom.jpg)
5 CrazyBee F3 FS flight controller is a Highly integrated board for 1S Whoop brushless racing drone.
6 It might be the world first Tiny whoop size brushless flight controller which integrated Receiver/4in1 ESC/OSD/Current Meter.
7 ## MCU, Sensors and Features
9 ### Hardware and Features
16 - Battery Voltage Sensor: yes
17 - Integrated Voltage Regulator: yes, booster, 5V/800mA
18 - Integrated Current sensor:Max 14A, could be modified to 28A by replace resistor
19 - Integrated Flysky compatible receiver
20 - Buttons: 1 (Receiver bind button)
21 - Integrated 4x Blheli_s ESC: Max 5A per ESC
22 - ESC Connector: 3-pin, PicoBlade 1.25mm pitch
23 - Beeper output: 2-pin, soldering pad
24 - 4 Rx Indicating LEDs: 2 x red and 2 x white
31 | Label | Pin | Timer | DMA | Default | Note |
32 |----------------------------|------|-------|-----|-------------|----------------------------------|
33 | MPU6000_INT_EXTI | PC13 | | | | |
34 | MPU6000_CS_PIN | PA4 | | | | SPI1 |
35 | MPU6000_SCK_PIN | PA5 | | | | SPI1 |
36 | MPU6000_MISO_PIN | PA6 | | | | SPI1 |
37 | MPU6000_MOSI_PIN | PA7 | | | | SPI1 |
38 | OSD_CS_PIN | PB1 | | | | SPI1 |
39 | OSD_SCK_PIN | PA5 | | | | SPI1 |
40 | OSD_MISO_PIN | PA6 | | | | SPI1 |
41 | OSD_MOSI_PIN | PA7 | | | | SPI1 |
42 | RX_CS_PIN | PB12 | | | | SPI2 |
43 | RX_SCK_PIN | PB13 | | | | SPI2 |
44 | RX_MISO_PIN | PB14 | | | | SPI2 |
45 | RX_MOSI_PIN | PB15 | | | | SPI2 |
46 | RX_IRQ_PIN | PA8 | | | | |
47 | RX_BIND_PIN | PA9 | | | | |
48 | RX_LED_PIN | PA10 | | | | |
49 | PWM1 | PB8 | TIM8, CH2 | | | |
50 | PWM2 | PB9 | TIM8, CH3 | | | |
51 | PWM3 | PA3 | TIM2, CH4 | | | |
52 | PWM4 | PA2 | TIM15,CH1 | | | |
53 | VBAT_ADC_PIN | PA0 | | | | ADC1 |
54 | RSSI_ADC_PIN | PA1 | | | | ADC1 |
55 | BEEPER | PC15 | | | | |
56 | UART3 TX | PB10 | | | | will add pinout soon |
57 | UART3 RX | PB11 | | | | will add pinout soon |
60 ## Manufacturers and Distributors
62 https://www.banggood.com/Racerstar-Crazybee-F3-Flight-Controller-4-IN-1-5A-1S-Blheli_S-ESC-Compatible-Flysky-AFHDS-Receiver-p-1271331.html
70 See the same item for [CrazyBeeF3FR](Board%20-%20CrazyBeeF3FR.md#FAQ%20&%20Known%20ssues)
73 User Manual: http://img.banggood.com/file/products/20180225215703Crazybeef3flysky.pdf