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Acci FPV Flight Controller - Betaflight STM32F405 / AT32F435 - EasyEDA open source hardware lab (oshwlab.com)


F4 Flightcontroller for Betaflight firmware drones.

The main idea of this project is to learn and play while designing a functional F4 Flight Controller compatible with Betaflight firmware.

Does not contains OSD support but contains 9V circuit for DJI VTX and does not support SBUS for now.

Specs

• STM F405
• 6 UARTS
• MPU6000
• Blackbox, up to 128MB!
• 9v pad for DJI

CURRENT STATUS (It works)

Version RC 0.8 is BEING TESTED

• UART Inverter is disabled as the new RXs don't need it.

First test flight video

Already tested:

• Microprocesor
• Clock
• UARTS
• Gyro
• 9v rail
• 5v rail
• 3.3v rail
• Flash memory
• Buzzer

Pending to be tested:

Known issues:

• Investigating issues on the 9v rail. The current voltage regulator may not be strong enough for this purpose. If you face issues with the 9v rails power the VTX using the lipo if possible.

How to load betaflight

• Download Betaflight configurator 10.8 and flash the firmware version you prefer of the target STM32F405.
• Once the firmware is loaded connect and enter cli to load the board configuration: Acci FPV Flight Controller setup (github.com)