$139.90

3DR Location One GPS w/ Compass and Barometer

3DR Location One GPS — M10070

DroneCAN Precision GNSS Receiver with RM3100 Compass & DPS310 Barometer — Powered by u-blox NEO-M9N.

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Overview

The 3DR Location One is a DroneCAN GNSS, compass, and barometer module built around the u-blox NEO-M9N, RM3100, and DPS310 sensors. Powered by ArduPilot AP_Periph firmware and designed as an upgrade of the legacy Location One.

Unlike other GNSS boards, Location One is engineered with a dedicated 50 × 50 mm RF ground plane, carefully isolated grounds, and optimized circuitry to ensure strong reception at any orientation and clean CAN-based communication. Designed for all DroneCAN compatible platforms.

Built on over 10 years of flight controller design and development experience.

Key Features

GNSS Receiver	u-blox NEO-M9N — GPS, GLONASS, Galileo, BeiDou	Compass & Barometer	RM3100 magnetometer + DPS310 barometer
Communication	DroneCAN via AP_Periph firmware — CAN1, CAN2, CAN-FD capable	USB-C Port	Firmware updates, configuration, and debugging
PPS Output	MOSFET-driven with selectable logic level	Input Protection	Full TVS protection on all voltage rails
RF Ground Plane	50 × 50 mm — ~15% better performance vs standard designs	RGB LED & Safety Switch	IS31FL3195 LED driver + onboard Safety Switch

Design Updates — Revision F vs E

Note: Revision F requires firmware changes from previous revisions. Contact us for details.

RM3100 Z-Axis Protection	Sensitive Z-axis coil now protected against common sources of physical damage — improved reliability in field operations
Upgraded Backup Battery	Up to 6 weeks warm-start retention after power loss — maintains full capacity after multiple charge cycles
PPS Output Enhancement	MOSFET-driven PPS output with selectable logic level — improved signal integrity and compatibility
Expanded u-blox Interface Access	External interrupt, SAFEBOOT, and D_SEL pads now accessible for advanced control and integration
Additional STM32 Serial & Boot Pads	Optional TX2/RX2 serial pads and BOOT0 pad added — enables in-circuit firmware upgrades and flexible boot control
Updated RGB LED Driver	New IS31FL3195 RGB LED driver for improved status indication and broader compatibility
Selectable I²C / CAN Standalone Mode	DPS310 and RM3100 can now be exposed directly to the I²C bus for standalone I²C system compatibility
Onboard Safety Switch	Integrated Safety Switch added for complete arming control without additional hardware

Technical Specifications — Revision F

GNSS Performance

GNSS Module	u-blox NEO-M9N
Constellations	GPS, GLONASS, Galileo, BeiDou
GNSS Bands	L1
RTK Capable	No
CAN-FD Capable	Yes
PPS Output	MOSFET-driven, selectable logic

Sensors

Magnetometer	RM3100
Barometer	DPS368
Sensor Mode	Selectable I²C / CAN
I²C Mode	All sensors except GNSS on I²C; GNSS remains on CAN

Interfaces

Ports with Connectors	3 × JST-GH (CAN1, CAN2, GPS), 1 × USB-C
Ports in Pads	D_SEL, STM32 BOOT0, TX2/RX2 (optional), PPS
Safety Switch	Yes — onboard
LED	RGB — IS31FL3195 driver
External Antenna	No

Electrical & Environment

Operating Temperature	–20 to 80 °C
Backup Battery	Up to 6 weeks warm-start retention
Power Design	Dual 3.3V regulators (separate GPS and MCU domains)
Input Protection	TVS protection on all voltage rails

Mechanical

Dimensions (L × W × H)	58 × 50.2 × 8.7 mm (2.28 × 1.97 × 0.34 in)	Weight	22.2 g (0.78 oz)
Screw Pattern	45 × 45 mm (1.77 × 1.77 in)	Screw Size	M3
Ground Plane	50 × 50 mm (1.97 × 1.97 in)	Country of Origin	USA