A Siderion RM3100 magnetic sensor, black textured rectangular mounting with rounded corners and two circular cutouts, shown on a white background with 'MADE IN FRANCE' text below.
Siderion RM3100 professional magnetometer sensor on a gray background.
Siderion RM3100 professional magnetometer sensor on a gray background with its packaging box open.
Two black RM3100 components with 'drotek' branding on a white background
RM3100
Best Seller

RM3100

€42,90
tax excl.

SID-SENS-RM3100

3760 in stock
Professional-grade, low-noise magnetometer designed for accurate compass heading in high-interference environments.

Professional-grade, low-noise magnetometer designed for accurate compass heading in high-interference environments.

Ships in 1-2 business days when in stock

Ships in 1-2 business days when in stock

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  • From 50 pcs = You save 10%
  • From 100 pcs = You save 12.5%
  • From 200 pcs = You save 15%
  • From 500 pcs = You save 17.5%
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RM3100

Professional-grade, low-noise magnetometer designed for accurate compass heading in high-interference environments.

Achieve unmatched heading precision with the professional-grade RM3100 magnetometer.
Ultra-low power, compact size, and an extensive dynamic range.

➤ High-Sensitivity (13 nT).
➤ Wide Field Measurement range (-800 µT to +800 µT)
➤ Pixhawk, ArduPilot, Betaflight compatible over SPI/I²C

Ideal for UAVs, drones, robotics, and precision farming.

Best-selling RM3100 module on the market since 2018

 

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Download section

Technical:

Certificates:

What's included?
What's included?

✔ 1x RM3100
✔ 1x 6P JST-GH silicone cables
✔ 1x 4P JST-GH silicone cables

RM3100 overview

Optimize your drone’s navigation with the RM3100, a ready-to-use, high-performance 3-axis magnetometer designed for accurate heading and orientation in demanding environments.

Powered by PNI’s magneto-inductive technology, it eliminates magnetic noise, even from motor coils and metal components, so your drone can reliably follow waypoints and maintain precise course correction.

Close-up of a circuit board with electronic components on a dark background Close-up of a circuit board with electronic components on a dark background

Technical

RM3100
Field Measurement Range-800 µT to +800 µT
Gain75 LSB/µT
Sensitivity13 nT
Noise15 nT
Noise floor4 pT/√Hz @ 1 Hz
Min. Detectable field2.7 nT @ 1 Hz
Maximum Single-Axis Sample Rate440 Hz
Single-Axis Average Current260 µA
InterfacesSPI - JST-GH 1.25mm 6P
I2C - JST-GH 1.25mm 4P
Size33 x 26 x 10 mm
Weight7 g

Reasons to choose the RM3100

✅ Superior Accuracy
Over 10x better resolution and 20x lower noise than standard Hall Effect sensors, with 10 nT resolution for ultra-precise measurements.

✅ Noise-Free Performance
Delivers clean, stable magnetic field data for reliable heading reference, even in electrically noisy environments.

✅ Plug-and-Play
No temperature calibration required—operational out of the box for seamless integration.

✅ Low Power, High Efficiency
Engineered for minimal power consumption without compromising performance.

✅ Zero Hysteresis
Ensures consistent, repeatable results for critical applications.

Practical uses

➤ Drone surveying & mapping
➤ Precision agriculture
➤ Autonomous vehicle navigation
➤ Robotics & industrial automation
➤ Aeronautical & UAV systems

Customer reviews

  • 5 stars: 13 (87%)
  • 4 stars: 2 (13%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Arthur P.
No more toilet bowling

My drone was spinning during loiter mode with old LIS3MDL compass. Swapped to RM3100 and it holds perfectly still now.

P
Piotr Z.
Great sensor

Arrived well packaged. Magnetometer response speed and accuracy are remarkable.

A
Andrea C.
Plug and play with Cube

Connected directly to I2C2 port on Cube Orange, instant recognition. Smooth flight test, i recommend

C
Chen W.
Perfect for heavy lifter drone

8 motors producing big magnetic field had no effect on rm3100 position heading

S
Sven O.
good but price a bit high

Performance is 5/5, price is slightly high but considering performance loss without it i guess it pays off.

T
Tariq A.
Very stable heading readings

Drastic reduction in EKF yaw errors in ArduCopter. definitely worth the extra cost over cheap compasses.

L
Luca R.
rm3100 magnetometer

Replaced my noisy internal compass. easy setup on I2C bus

J
Johnathan R.
Perfect for precision navigation

Heading doesn't wander at all when throttle is maxed out. Very happy with purchase.

D
Dmitry S.
Clean PCB layout

Hardware quality is top grade. Small board size easily fits in small drone.

G
Guillermo F.
Essential for ardupilot rovers

If you build ground rovers near iron/steel chassis this is mandatory as it makes a huge difference in heading stability

F
Francois D.
It Works fine but wire was short

The mag sensor is super precise. I just wished the included jst cable was 10cm longer for large frame quad

L
Liam S.
saves my navigation heading

we had severe compass variance errors near high voltage power lines. rm3100 handled it without dropping EKF.

M
Mohamed E.
Good module easy to calibrate

QGroundControl picked it up over i2c immediately. calibration pass on first try. 5 stars.

V
Viktor N.
best compass for autonomous drones period

PNI RM3100 technology is far superior to hall effect compasses. zero drift after temp changes.

E
Erik J.
No magnetic interference anymore!!

Finally fixed magnetic offset errors on my quad. motor noise completely gone compared to built-in compass.