Caddx Walksnail WS-M181 GPS

The Walksnail WS-M181 is a compact GPS module built around the 10th-generation u-blox M10 chipset with a built-in QMC5883 compass, for FPV drones spanning sub-250g long-range builds to heavy-lift cinelifters.

Key features

• 10th-generation M10 chipset tracks GPS, GLONASS, BeiDou, Galileo, SBAS and QZSS across 72 search channels for fast locks and dense satellite coverage.
• Built-in QMC5883 magnetometer gives heading data alongside position, so no separate compass module is needed.
• Ultra-thin ceramic antenna with an oxidation- and scratch-resistant coating maintains reception through steep banking angles.
• Backup battery enables hot starts for quick repositioning after power-up.

Specifications

• GNSS chipset: u-blox M10 (UBX-M10050, 10th generation)
• Constellations: GPS, GLONASS, BeiDou, Galileo, SBAS, QZSS
• Compass: QMC5883
• Input voltage: 5V
• Baud rate: 115200
• Output protocol: NMEA and UBX
• Output rate: 1-10 Hz (10 Hz default)
• Dimensions: 18 x 18 x 4.6mm
• Weight: about 4.3g
• Horizontal accuracy: 1.5m (open air)

Requires Betaflight 4.3.0 or newer to read the M10 chip's protocol (older firmware falls back to NMEA); wires to any flight controller over 5V and a spare UART for Betaflight GPS Rescue or INAV navigation.