Eachine Tyro 79 140mm 3 Inch DIY Version FPV Racing RC Drone Spare Part Customized F4 Flight Controller Integrated OSDDescription: Brand name: Eachine Item name: F4 Flight Controller Main control chip: STM32F411 Sensor: ICM20602 6-axis Integrated OSDPPM/DSM/IBUS/UAR share: UART1-RXMounting holes distance: 20*20mm Weight: 24g PID circulation rate & refresh rate can up to 32k Hz Supports Betaflight/cleanflight/inav firmware Package included:1 x F4 Flight Controller