HobbyWing - XRotor F4 Nano Flight Controller w/OSD
by HobbyWing

A 20x20 Flight Controller that works, period.

• STM32 F405 MCU allows the FC to run the PID looptime and gyro with higher frequency.
• SPI Sensor MPU6000 includes an accelerometer and a gyro.
• Onboard OSD microchip which supports the DMA mode allows users to adjust its parameters via the Betaflight software. (Note: the OSD is controlled by the F4 MCU.)
• The FC which supports Betaflight firmware & allows parameter adjustment via Betaflight software is more applicable to FPV race.
• TF-card which can record and save more flight/black box data allows users to adjust the setup of their aircraft easily.
• Compatible with various receivers like SBUS, SUMH, SUMD, SPEKTRUM1024/2048, XBUS, PPM and etc.
• LED strip signal output port allows users to adjust the color & flash mode of the LED strip via the FC.
• Volt/Amp monitoring port allows users to check the battery voltage ( VBAT+ port ) and current (CRT port) (extra current meter is needed).
• Buzzer output port allows users to connect external buzzer(s) to the FC for warning or informing the flight status of the aircraft.
• Micro USB port allows users to connect the FC to a PC to flash firmware and adjust parameters) 

User Manual