Radiolink GPS SE100 Module with Electronic Compass

Positioning accuracy and fix speed both matter for how tight a drone can hold position or follow a planned route, and the SE100 pushes both further than entry-level GPS modules typically manage - accuracy down to roughly 50cm and a 20-satellite fix achievable in around 6 seconds on open ground, backed by a 10Hz update rate that keeps the flight controller's position estimate current rather than updating in laggy steps. Tracking sensitivity down to -167dBm helps it hold a usable fix in weaker-signal conditions like tree cover or urban canyons where cheaper modules lose lock.

A built-in QMC5883L electronic compass communicating over I2C adds heading data alongside position, and support for GPS, GLONASS, QZSS and BeiDou constellations means it is not limited to a single satellite network for getting a fix. Direct compatibility with Pixhawk and APM flight controllers keeps wiring and configuration within the same well-documented setup those platforms already use for other Radiolink and third-party GPS modules.

Common uses are precision position hold and waypoint navigation on Pixhawk or APM-based builds, survey and mapping flights wanting faster fix times and tighter accuracy than entry-level GPS units, and multi-constellation reception in locations where GPS-only modules struggle to get a reliable lock.