Dime-Sized AHRS Sensors

Dime-Sized AHRS Sensors

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AHRS Module & Evaluation Boards

AHRS

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Our AHRS sensors are built to provide tight centimeter-level accuracy at an incredibly affordable price. Whether you need one or 10  thousand, we work to make the price right with your budget.

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Our AHRS Sensor Line-Up

Start with a Development Kit, grow with a Rugged or Dime-Sized Module.

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Evaluation Board

This unit contains the AHRS sensor and a simple computing board for calculations and easy access interfaces. Test the AHRS on your device with this.

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AHRS Module

Our quarter-sized Single or Multi-Band GPS rugged module designed for tough environments. Bulk discounts available.

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AHRS Module

The smallest AHRS blueprint, at the smallest price. Accuracy up to 0.05° Angular Resolution in a module the size of a dime! 

Key Performance Figures

0.1°
Roll/Pitch
2.0°
Static Heading
0.3°
Dynamic Heading
1KHz
Data Rate
0.05°
Angular Resolution
1.3
Grams

Detailed Performance And Specifications

Attitude Performance

Roll/Pitch (RMS) 0.1°
Static Heading w/magnetometer(RMS) 2.0°
Static Heading w/Dual Compass (RMS) 0.6°
μINS Dynamic Heading** (RMS) 0.3°

*Position is stationary. **Requires GPS lock with periodic >0.8 m/s2 acceleration and >2 m/s velocity

Interfacing Communications

Communication Protocols


Module Interface TTL, SPI
Rugged Interface (IS-RUG-1.x) USB, TTL, RS232, RS485, CAN
Max Baud Rate:

  TTL, RS422, RS485

  RS232
Rate:

  3Mbps

  500Kbps

Data Output

  • GPS, GPS Raw, UTC Time
  • IMU (Gyro & Accelerometer)
  • Magnetometer & Barometer
  • Attitude (Quaternions, Euler, DCM)

Sensor Suite

Sensors Gyroscope Accelerometer Magnetometer Pressure
Operating Range ±2000 °/sec ±16 g ±4800 µT 30–120 kPa
Bias Repeatability < 0.2 °/sec < 5 mg    
In-Run Bias Stability < 10 °/hr < 40 μg    
Random Walk 0.15 °/√hr 0.07 m/s/√hr    
Non-linearity 0.2 % FS 0.2 % FS    
Noise Density 0.01 °/s/√Hz 300 μg/√Hz   Pa/√Hz
Bias Error over -40C to 85C
 0.7 °/s RMS 0.4 m/s2 RMS    
Max Output Rate 1 KHz 1 KHz 100 Hz 50 Hz
Bandwidth 250 Hz 218 Hz 50 Hz 5 Hz
Alignment Error 0.05° 0.05° 0.05°  
Sampling Rate 8 KHz 4 KHz 100 Hz 250 Hz
Resolution *0.0076 °/sec *122 µg 0.6 µT 0.0016 kPa
*1KHz resolution after oversampling
       (13 cm)

Electrical

Power Draw (w/o GPS ant.) Min Typ Max Units
µAHRS @ 250Hz 412 mW   412   mW
Supply Voltage (Vcc) 3 3.3 3.6 V
GNSS VBAT Voltage 1.4 3.3 3.6 V
GNSS VBAT Current @ 3.0V   15   µA

GNSS Antenna Supply w/o load

(2.8V w/ 10mA load)*

   2.9    V
GNSS Antenna Supply Current*     300 mA
GNSS Max RF Input Power +15 dBm     +15 dBm
I/O Pin MAX Voltage Range -0.5   3.6 V
Total Output Current, All Pins     120 mA
I/O Pin Input low-level 0.99     V
I/O Pin Input high-level 2.31 3.3 3.6 V
I/O Pin Output high-level   3.3   V
STROBE input frequency     1 KHz
Rising Slope of VIN** 2.4     V/ms

*A 10 Ohm current limiting resistor sits in-line between voltage supply and antenna.

**The supply rising slope must be higher than minimum rating for proper function

Mechanical

Dimensions

SIZE 16.3 x 12.6 x 4.6 mm
WEIGHT 1.3 grams

 

User Manual & Documentation

Have more questions? Dig into the details with our up-to-date online user manual and full documentation.

View User Manual & Documentation
 

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