The F3 Brushed Flight Control Board is a high-performance, lightweight, and versatile flight controller designed for micro FPV frames. Based on the SP Racing F3 EVO Brush architecture, it offers superior stability and enhanced control for micro drones. Optimized for 6-axis multi-rotor configurations, it delivers high responsiveness and efficient power management, supporting both 1S (4.2V) and 2S (8.4V) power supplies for different performance needs.

This board is ideal for FPV enthusiasts looking to build or upgrade their micro drones with precise control and stable performance.

Specifications:

• Processor: STM32F303CCT6
• Gyro Sensor: MPU6500
• Firmware: SP RACING F3 EVO Brush (32-bit)
• Power Supply: Supports 1S (4.2V) and 2S (8.4V)
• Supported Receiver Input: PPM, SBUS, DSM
• Voltage Boost and Reduction:
  • UART1/2: 5V Output
  • UART3: 3.3V Output
• LED Support: Compatible with WS2812 LED strips (colorful turning lights and brake lights)
• Maximum Operating Current: 10A or higher (per axis)
• Motor Compatibility: Supports hollow cup motors, including 1020 coreless motors
• Battery Voltage Detection: Integrated voltage detection with buzzer interface for alerts

Features:

1. Voltage Regulation: Independent circuit design with integrated voltage boost and reduction technology ensures stable output:

   • UART1/2: Provides 5V output for auxiliary devices like cameras or transmitters.
   • UART3: Delivers 3.3V output for receiver compatibility.

2. Power Supply Flexibility:

   • Supports both 1S (4.2V) and 2S (8.4V) power inputs.
   • Enhanced performance with 2S power configuration for more aggressive flying.

3. Stability & Control:

   • Processor: Equipped with STM32F303CCT6 for efficient data processing.
   • Sensor: MPU6500 ensures accurate gyro and accelerometer readings.
   • Advanced F3 hardware platform for higher stability during flight.

4. Receiver Compatibility:

   • PPM and SBUS: Use UART2 interface with 5V output.
   • DSM: Utilize UART3 with 3.3V output for direct DSM receiver connection.

5. Motor Control:

   • Large current NMOS transistors handle up to 10A current for each axis, providing sufficient power for micro motors.
   • Each board includes freewheeling diodes to protect against back EMF, enhancing motor efficiency.

6. LED Control: Supports WS2812 programmable LED strips for customizable lighting, useful for orientation and visual effects.

Receiver Configuration Guide:

• DSM Receiver:

  • Solder connections directly to 3.3V, GND, and RX3.
  • Configure UART3 in Cleanflight (CF) software.

• PPM & SBUS Receivers:

  • Solder to UART2 pins: GND, +5V, and RX2.
  • Configure SBUS signal in Cleanflight (CF) software.

Important Notes:

• Battery Configuration:

  • Default configuration is for 1S (4.2V). For 2S (8.4V) setup, disconnect the default 1S jumper and connect the 2S pads.
  • Warning: Do not short all three pads simultaneously. Ensure correct battery voltage selection before powering the board.

• Open Source Compatibility: This board is based on an open-source flight controller design. BDTronics ensures quality by selecting and testing the best available products for optimal performance.

Package Contents:

• 1 x SP Racing F3 EVO Brushed Flight Control Board
• 1 x Adhesive Tape
• 1 x Connecting Cable