Polulu Redshift Labs UM7 Orientation Sensor TTL / SPI 4 V - 5.5 V EKF

Product Code: AN-07620
Availability: 4-6 business days
Planned delivery date after ordering: 2025-04-11
223.60€
Ex Tax: 184.79€

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The UM7 orientation sensor from Redshift Labs 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.

Features:

  • 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

Communication:

  • Output data:
    • Attitude and heading (Euler angles)
    • Attitude quaternion
    • magnetometer, accelerometer, gyro data
    • GPS altitude, position, velocity (with optional external GPS)
  • 3.3 V TTL serial interface (UART) with baud rates up to 921,600 bps can stream data or provide updates on request
    • Note: the main UART pins, TX, and RX, are 5V-tolerant and can be directly connected to 5 V systems that are guaranteed to read 3.3 V as high
  • Transmits data using human-readable NMEA strings (up to 100 Hz broadcast), binary packets for higher efficiency (up to 255 Hz broadcast), or a combination of both
  • Flexible communication architecture allows UM7 to transmit any combination of data at individually adjustable rates
  • Connects to the Redshift Serial Interface software to allow for real-time plotting of sensor data, logging, device configuration, and magnetometer calibration
  • SPI interface available through expansion connector

Specifications:

  • UM7 (with enclosure):
    • Dimensions: 1.09″ × 1.12″ × 0.37″ (28 mm × 28 × 9 mm) without mounting tabs
    • Weight: 0.26 oz (7.5 g) without cable
  • Operating voltage: 4 V to 5.5 V
  • I/O logic level: 3.3 V (with 5V-tolerant main UART pins, TX and RX)


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

Documents:

UM7 Datasheet

Redshift Serial Interface software