No fuss, self-learning module

Attitude Heading Reference System (AHRS) M&M Modules

PNI’s M&M modules will self adapt and learn its system and its environment automatically to provide accurate quaternions, heading, pitch and roll. All while using 100 times less power than traditional AHRS modules.


PNI’s M&M modules incorporates PNI’s SENtral sensor fusion coprocessor that runs PNI’s  proprietary 15 state Kalman filter sensor fusion algorithms to continuously correct for gyro bias drift, automatically calibrate for hard and soft-iron and reject magnetic distortions, while consuming less than a ¼ of a milliamp.


The SENtral Coprocessor works with all available inertial sensors. M&M modules come configured with the following sensors:


  • PNI M&M Amber module: PNI’s RM3100
    Magnetic Sensor and ST Micro’s LSM6DSL
    Accelerometer/Gyroscope and LP25H Pressure sensor.
  • PNI M&M Magenta module include AKM
    AK09911D magnetic sensor and ST.

Technical Specifications

M&M Amber and Magenta specifications

Data Outputs
(full range calibration)
M&M Amber & M&M Magenta: Heading, Pitch & Roll, Rotation Matrix Quaternions, Magnetic, Accelerometer, Gyroscope and Barometric Pressure Sensor Data, Rotational Velocity, Step Count, Linear Acceleration
Heading AccuracyAmber: 2° rms typical
Magenta: 5° rms typical
Digital Supply Voltage1.71 - 3.6V
Analog Supply Voltage2.4 - 3.6 V
Average Current Draw18 mA
Sleep Mode Current Draw0.25 mA
Output Sample Rate200 Hz
Communication InterfaceI2C
Dimensions(LxWxH)Amber: 22x11x6.75 mm
Magenta: 11x11x1.43 mm
WeightAmber: 0.6 gram
Magenta: 0.2 gram
Operating Temperature-40° to +85° C

Download Documentation

SENtral® – M&M technical datasheet

Try our products for yourself

Order one of our Evaluation Kits and try out our products and amazing technology for yourself.

Ask our experts

Get direct advice from our engineers in less than 24 hours. We are available Monday through Friday, 9:00 am to 4:00 pm, Pacific Time.


(707) 566-2260


2331 Circadian Way
Santa Rosa, CA 95407