Beitian BN-220 Dual GPS/GLONASS Module with Antenna, TTL, for RC Drones

The Beitian BN-220 is a GPS module built specifically with drone and RC applications in mind, combining both GPS and GLONASS satellite constellations for positioning, which generally means faster fixes and more consistent accuracy than a GPS-only module, particularly in areas where GPS satellite visibility alone can be marginal.

The module communicates over a simple TTL-level serial interface with just three connections needed - GND, TX (data output), and RX (data input) - keeping wiring into a flight controller or microcontroller straightforward without extra signal conditioning. Supply voltage is flexible at 2.8V to 6.0V, giving it compatibility with both 3.3V and 5V flight controller power rails common across the Pixhawk, APM, and similar open-source autopilot ecosystems.

Two onboard status LEDs give at-a-glance feedback on module state: a blue TX LED flashes during active data output, confirming the module is communicating, while a separate PPS LED indicates GPS fix status - staying off when no satellite fix has been acquired yet and flashing red once a solid fix is locked in, letting a builder visually confirm GPS lock without needing a connected display or ground station software running.

The module is explicitly described as needing no driver for Raspberry Pi integration, useful for companion-computer or onboard-logging setups that read GPS data directly through a Pi's serial port alongside a flight controller. Drone builders, RC navigation projects, and any application wanting combined GPS/GLONASS positioning with simple TTL wiring and clear visual fix-status feedback will find the BN-220 a practical, purpose-built choice for the FPV and RC space specifically.