Caddx Walksnail WS-M181 GPS

The Caddx Walksnail WS-M181 is a compact, high-precision GPS module designed for FPV drones spanning from sub-250g long-range builds to heavy-lift cinelifters. Built around the 10th-generation U-blox M10050 chipset, it tracks up to four major satellite constellations concurrently (GPS, GLONASS, Galileo, and BeiDou). This concurrent reception ensures rapid cold starts, denser satellite locks, and improved positional accuracy compared to older M8-generation modules, significantly reducing the time you spend waiting on the flight line.

Key features

• 10th-generation U-blox architecture for rapid satellite acquisition
• Simultaneous tracking of four GNSS networks for highly stable 3D locks
• High-gain ceramic patch antenna maintains signal during steep banking angles
• Standard 18-millimetre footprint fits the vast majority of aftermarket TPU drone mounts

Specifications

• GNSS chipset: U-blox M10050
• Supported constellations: GPS, GLONASS, Galileo, BeiDou
• Input voltage: 5V
• Baud rate: 115200 bps
• Protocol: Ublox
• Dimensions: 18 x 18 x 4.6 mm
• Weight: 5.1 g

Ideal for Betaflight GPS Rescue mode or complex INAV navigation, the WS-M181 wires directly to any standard flight controller using a 5V pad and a single spare UART. Its stripped-back design omits an onboard compass, keeping the profile thin and dedicating all 5.1 grams purely to positioning performance.