UM7-LT Orientation Sensor

PololuSKU: RB-Pol-463
Manufacturer #: 2763

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  • Attitude and Heading Reference System
  • Contains a three-axis accelerometer
  • ±2000°/s (gyro), ±8 g (accelerometer), ±12 gauss (magnetometer)
  • Maximum logic voltage: 3.3 V
  • Combines this data using an Extended Kalman Filter
  • Does not include an enclosure

The UM7-LT Orientation Sensor is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates. This LT version of the UM7 does not have an enclosure.

UM7-LT Orientation Sensor- Click to Enlarge

UM7-LT Orientation Sensor- Click to Enlarge

  • Size: 1.06″ × 1.02″ × 0.26″
  • Weight: 3.5 g

UM7-LT Orientation Sensor- Click to Enlarge

  • Interface: TTL serial, SPI
  • Minimum operating voltage: 4 V
  • Maximum operating voltage: 5.5 V
  • Maximum logic voltage: 3.3 V2
  • Axes: pitch (x), roll (y), and yaw (z)
  • Measurement range:
    • ±2000°/s (gyro)
    • ±8 g (accelerometer)
    • ±12 gauss (magnetometer)
  • Supply current: 50 mA
  • Case/enclosure: N

Sensors and processing

  • Excellent gyro bias stability over temperature
  • Adjustable low-pass filter and EKF settings provide customizable performance for various applications
  • States and sensor data synchronized to GPS position and velocity using optional external GPS module
  • Allows for alignment calibration and third-order bias and scale factor temperature compensation for accelerometers, gyros, and magnetometer
  • Magnetometer soft and hard-iron calibration can be performed through the serial interface software

Attitude and heading

  • EKF estimation rate: 500 Hz
  • ±1° typical static pitch/roll accuracy
  • ±3° typical dynamic pitch/roll accuracy
  • ±3° typical static yaw accuracy
  • ±5° typical dynamic yaw accuracy
  • 0.5° angle repeatability
  • 0.01° angular resolution

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