M9N-F4 series is based on ArudPilots’ AP_Periph firmware, It is a GNSS+COMPASS+BAROMETER+IMU peripheral with CAN/UAVCAN and UART/MSP interfaces, plus 4x spare UARTs, 1x I2C expansion bus for additional peripherals.
M9N-F4 uses multi-constellation GNSS powered by u-blox NEO-M9N, NEO-M9N is a concurrent GNSS receiver which can receive and track multiple GNSS systems. Owing to the multi-band RF front-end architecture all four major GNSS constellations, GPS,Galileo, GLONASS and BeiDou can be received concurrently.
M9N-F4-3100 integrates an industrial-grade compass PNI RM3100 which provides high resolution, low power consumption, no hysteresis, large dynamic range, and high sampling rates.
M9N-F4 series is not just a AP_Periph with full AHRS sensors. It can also work as a flight controller with 9 PWM outputs.