I just wanted to post this because under Plane Hardware there is exactly stated that description its for Mamba F405 MK3 but:
- there is picture of Mamba F405 MK2 connections
- the specified connections are incorrect as after uploading FW - UART3 and UART4 are GPS
- there is no correct firmware for it - it points to Mamba F405US-I2C but that one does not exist
Other than that the board is functional.
If what I said about GPS is inccorect because I used CUSTOM FIRMWARE OPTION just close it.