STM32 F303 MCU, Runs Betaflight 3.0 firmware. SBUS/PPM input (Pin headers). 8PWM output (1-4Pinheaders and Sh1.0 Plug, 5-6 as Pin headers). OSD Configuration has been incl. in Betaflight GUI. Supports SD Card and LIPO direct input (2-4S). MPU6000 at SPI bus.