MicoAir MG-902 GNSS GPS & Compass Module

The MicoAir MG-902 is a compact GNSS module that combines a u-blox M9 (M9140) receiver with a QMC5883L compass, giving Betaflight, INAV, ArduPilot and PX4 builds concurrent multi-constellation positioning and heading in one small unit.

Key features

• u-blox M9 receiver tracks GPS, GLONASS, Galileo and BeiDou concurrently across up to 32 satellites for fast, reliable locks.
• 25Hz navigation rate and a 25 x 25 x 4mm patch antenna keep position updates current during fast manoeuvres.
• Built-in QMC5883L magnetic compass over I2C for heading lock and stable return-to-home orientation.
• Onboard flash retains configuration parameters through power loss.
• Status LED shows power (solid blue) and 3D fix (1Hz blink) at a glance.
• Ships with a 3D-printed battery-strap mount and interconnect cable for a tidy install.

Specifications

• GNSS receiver: u-blox M9 (M9140)
• Compass: QMC5883L
• Navigation rate: up to 25Hz
• Input voltage: 5V
• Current draw: 50mA
• Output interface: UART (3.3V LVTTL), I2C for compass
• Connector: SH1.0-6P
• Dimensions: 25 x 25 x 7.8mm
• Weight: 12g

Firmware support covers Betaflight 4.2.0+, INAV 5.0.0+, ArduPilot 4.2.0+ and PX4 1.12.0+; mount it away from ESC and VTX wiring to keep the compass reading clean.