HGLRC M100 PRO GPS Module, u-blox M10, QMC5883L Compass

The HGLRC M100 PRO is a compact GPS and compass module aimed at FPV and freestyle drones that need position hold, return-to-home, or GPS rescue functionality without carrying a bulky navigation unit. At its core is a u-blox M10 chip, a tenth-generation GNSS engine that concurrently tracks GPS, GLONASS, Galileo and BeiDou satellites, giving faster, more reliable fixes than older single-constellation modules especially in built-up areas where sky view is partially blocked.

HGLRC pairs the M10 chip with a QMC5883L magnetic compass on the same small board, providing heading data alongside position so a flight controller can orient the aircraft correctly for GPS-assisted flight modes. The listing describes a 120-channel receiver capability and five-mode positioning, reflecting the breadth of satellite systems the M10 chip can draw from simultaneously, and HGLRC's own figures claim 50-plus satellites searchable at once under good conditions.

This kind of multi-constellation module is specifically useful in the common FPV failure mode where a quad flies out of GPS lock mid-flight; drawing from four constellations rather than one meaningfully reduces how often that happens compared to older GPS-only modules still found on budget flight stacks. The module connects over a standard SH1.0 6-pin cable, matching the connector most modern flight controllers use for their GPS port.

The package includes the GPS module itself, a length of heat shrink tubing for the connector joint, an HGLRC sticker, a printed manual, and the SH1.0-6pin connecting cable. Builders upgrading an existing freestyle or long-range quad from a basic GPS-only module, or adding GPS rescue to a build for the first time, will get a meaningful reliability improvement from the M100 PRO's multi-constellation receiver over older single-system modules.