u-blox NEO-6M GPS Module with EEPROM

Introduction

The u-blox NEO-6M GPS Module with EEPROM is a compact satellite positioning module targeted at UAV and FPV drone builders who need reliable real-time location, satellite data retention, and sensor compatibility. It suits builds from micros up to long-ranges where standalone GPS is required—for marking home point, returning to launch (RTL), or telemetry applications.

Key features

• Built on the 50-channel u-blox 6 GNSS engine, supporting GPS L1 C/A code and SBAS (WAAS, EGNOS, MSAS) for improved accuracy.

• Position accuracy: ~2.5 m CEP in open sky, ~2.0 m when SBAS corrections are available.

• Fast start-up: Cold start ≈27 s, warm start ≈27 s, hot start ≈1 s. Supports aided start in under 3 s.

• Low-signal sensitivity: tracking mode down to −161 dBm; cold start ≈−147 dBm; hot start ≈−156 dBm.

• 4-pin serial TTL header (TX, RX, VCC, GND), default 9600 baud and configurable from 4800 to 115200 baud; NMEA and UBX binary protocols.

• Built-in EEPROM and backup battery. Saves configuration and keeps ephemeris data during power-off for faster warm/hot starts.

Specifications

• GPS module: u-blox NEO-6M

• GNSS Chipset: u-blox 6 (NEO-6M)

• Input Voltage: 3.3-5 V (onboard regulator)

• Logic Level: 3.3 V TTL for RX/TX (TX is 3.3 V; RX must not be fed above ~3.6 V)

• Position Accuracy: ~2.5 m CEP (Autonomous), ~2.0 m with SBAS

• Update Rate: default 1 Hz, configurable up to 5 Hz via UBX or NMEA

• Sensitivity (tracking): ~−161 dBm

• Acquisition Times: Cold start ~27 s, hot start ~1 s

• Operating Temperature: −40 °C to +85 °C

• Dimensions: board approx. 22 x 30 x 4 mm; active antenna 25 x 25 x 7 mm

• In the box: GPS board, detachable active antenna

This GPS module integrates easily into most flight controllers via UART and Common GNSS ports; ensure the module’s logic pins match your FC’s levels (3.3 V). Use the EEPROM to store UBX configuration so settings persist across power cycles. For drone builds where weight is critical, note that this module is relatively small and light. It excels in FPV long-range, mapping, agriculture drones, and builds needing RTL/home awareness; it’s less beneficial indoors or under heavy canopy where GPS signal loss is inevitable.