SparkFun GPS-21834 SAM-M10Q GPS Breakout, Chip Antenna (Qwiic)

SparkFun's GPS-21834 breakout puts the u-blox SAM-M10Q GNSS module, antenna built in, on a compact Qwiic board. It suits microcontroller-based robots, rovers, trackers and experimental drone projects that read position over I2C or UART.

Key features

• Four constellations at once: GPS, Galileo, GLONASS and BeiDou, plus QZSS, for about 1.5 m horizontal accuracy.
• Fast fixes: 23 s cold start and 1 s hot start, with an onboard 3 V backup battery holding hot-start data for about 4 hours.
• Update rate: up to 18 Hz on a single constellation, 5 Hz with all four.
• Two Qwiic connectors: solder-free I2C daisy-chaining, plus 0.1" pins for UART, PPS time pulse, interrupt, safe-boot and reset.
• Low power: about 10 mA while tracking and 5 mA in power-save mode.

Specifications

• Module: u-blox SAM-M10Q (M10), built-in chip antenna
• Signals: GPS L1 C/A, Galileo E1B/C, GLONASS L1OF, BeiDou B1C, QZSS L1 C/A and L1S
• Horizontal accuracy: 1.5 m
• Velocity accuracy: 0.05 m/s
• Heading accuracy: 0.3°
• Time pulse accuracy: 30 ns RMS
• Max update rate: 18 Hz single GNSS, 5 Hz four GNSS
• Time to fix: 23 s cold, 1 s hot
• Operating limits: 80,000 m altitude, 500 m/s
• Supply: 3.3 V; about 13 mA acquiring, 10 mA tracking
• Backup battery: 3 V, 1 mAh
• Interfaces: I2C (2 × Qwiic), UART

The board takes a 3.3 V supply, which any Qwiic host provides; check logic levels before wiring its UART to a 5 V board. There is no compass on it, so a flight controller that needs heading for GPS modes still requires a separate magnetometer.