The Holybro DroneCAN RM3100 Professional Grade Compass is a high-precision 3-axis magnetometer designed for UAVs, RC vehicles, airplanes, and flying drones that require accurate heading, orientation, and navigation performance. Featuring PNI RM3100 magneto-inductive sensor technology, DroneCAN communication, ultra-low noise, and excellent magnetic stability, this external compass provides reliable positioning data even in demanding environments.
The Holybro RM3100 Compass is engineered to overcome common magnetic interference issues found in unmanned vehicles. By mounting the sensor away from motors, power cables, and metal components, it delivers accurate magnetic field measurements and improved heading reliability for autonomous flight and waypoint navigation.
This professional-grade DroneCAN magnetometer sensor uses advanced magneto-inductive technology to achieve high resolution, low hysteresis, and stable performance without magnetic drift. It is ideal for flight controllers running ArduPilot, PX4, and DroneCAN-enabled systems.
Key Features of Holybro DroneCAN RM3100 Compass
High-Precision 3-Axis Magnetometer Sensor
The RM3100 uses PNI’s proprietary magneto-inductive sensing technology to provide precise magnetic field measurements with excellent repeatability.
Benefits include:
- 3-axis magnetic field sensing for accurate heading calculation
- Extremely low magnetic hysteresis for stable readings
- High resolution up to 10 nT sensitivity
- Excellent signal-to-noise ratio
- Minimal magnetic drift during operation
- Reliable orientation data for autonomous vehicles
DroneCAN Communication Interface
The integrated DroneCAN protocol allows simple and reliable connection with modern flight controllers.
Advantages of DroneCAN Connectivity:
- Reduces wiring complexity with a CAN bus connection
- Does not occupy traditional serial ports
- Supports longer communication distances
- Provides robust data transmission in noisy environments
- Easy integration with multiple DroneCAN peripherals
Designed for UAVs, RC Vehicles, and Airplanes
The Holybro RM3100 Professional Compass is suitable for a wide range of remote-controlled and autonomous platforms.
Recommended Applications:
- Multirotor drones
- Fixed-wing aircraft
- Flywing drones
- RC airplanes
- Autonomous ground vehicles
- Robotics platforms
- Professional UAV systems
- Research and development projects
Benefits
Improved Navigation Accuracy
Accurate compass data helps flight controllers maintain correct orientation, improve waypoint navigation, and reduce heading errors.
Reduced Magnetic Interference
The external compass design allows installation away from electromagnetic sources such as:
- Brushless motors
- ESC power cables
- Batteries
- Metal frames
- High-current wiring
Professional-Level Reliability
Built for demanding applications, the RM3100 provides consistent magnetic measurements in industrial and hobby UAV environments.
Specifications: Holybro DroneCAN RM3100Â
| Specification | Details |
| Product Name | Holybro DroneCAN RM3100 Professional Grade Compass |
| Sensor Type | 3-Axis Magnetometer |
| Sensor Technology | PNI RM3100 Magneto-Inductive Technology |
| Communication Protocol | DroneCAN |
| Field Measurement Range | -800 to +800 μT |
| Sensitivity | 13 nT / 26 nT / 50 nT |
| Resolution | Up to 10 nT |
| Noise Level | 15 / 20 / 30 nT |
| Maximum Single-Axis Sample Rate | Up to 1600 Hz |
| Operating Temperature | -40°C to +85°C |
| Output Connector | 4-Pin JST-GH 1.25 |
| Material | Composite Material |
| Vehicle Type | UAV, RC Vehicle, Airplane, Flywing |
| Recommended Age | 14+ Years |
| Certification | CE |
| Communication Bus | CAN Bus |
Technical Performance Parameters
| Cycle Counts | Gain | Sensitivity | Noise | Sample Rate |
| 50 | 20 LSB/μT | 50 nT | 30 nT | 1600 Hz |
| 100 | 38 LSB/μT | 26 nT | 20 nT | 850 Hz |
| 200 | 75 LSB/μT | 13 nT | 15 nT | 440 Hz |
Installation Recommendations
For the best compass accuracy:
- Install the RM3100 away from motors and ESC wiring
- Keep the sensor separated from metal structures
- Avoid mounting near high-current power cables
- Follow the correct mounting orientation
- Perform compass calibration after installation
Proper placement helps minimize magnetic interference and improves heading accuracy.
Package Includes
- 1 × Holybro DroneCAN RM3100 Professional Grade Compass Magnetometer
Frequently Asked Questions
What is the Holybro DroneCAN RM3100 Compass?
The Holybro DroneCAN RM3100 Compass is an external 3-axis magnetometer designed to provide accurate heading and orientation measurements for UAVs, RC vehicles, airplanes, and autonomous systems.
What makes the RM3100 magnetometer different from standard drone compasses?
The RM3100 uses PNI magneto-inductive technology, offering higher resolution, lower noise, minimal hysteresis, and improved magnetic stability compared with conventional magnetometers.
Does the Holybro RM3100 support DroneCAN flight controllers?
Yes. The RM3100 uses the DroneCAN communication protocol and works with compatible flight controllers supporting CAN bus peripherals.
Can this compass be used for ArduPilot and PX4 drones?
Yes. The Holybro RM3100 is designed for UAV systems using DroneCAN-enabled ArduPilot and PX4 flight controllers.
Where should the RM3100 compass be installed?
The compass should be mounted as far away as possible from motors, batteries, ESCs, and metal components to reduce magnetic interference.
What vehicles can use the Holybro RM3100 Compass?
It can be used with drones, RC airplanes, flywing aircraft, autonomous vehicles, and other remote-controlled platforms requiring accurate navigation data.
Why choose an external DroneCAN compass instead of an onboard compass?
An external compass allows flexible placement away from electromagnetic interference sources, improving heading accuracy and navigation reliability.
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