Description

The UM7 orientation sensor is a third-generation Attitude and Heading Reference System (AHRS) from Redshift Labs that produces attitude and heading estimates from triaxial accelerometer, rate gyro, and magnetometer data. Unlike a typical inertial measurement unit (IMU), which only provides raw sensor readings, the UM7 features an onboard microcontroller that combines sensor data using a sophisticated Extended Kalman Filter (EKF) to generate orientation estimates 500 times a second.

Features and Specifications

• Dimensions
  • Size: 1.09" x 1.12: x 0.37″
  • Weight: 7.5 g
• General Specifications
  • Interface: TTL serial, SPI
  • Minimum operating voltage: 4V
  • Maximum operating voltage: 5.5V
  • Maximum logic voltage: 3.3 V
  • Axes: pitch (x), roll (y), and yaw (z)
    ±2000°/s (gyro)
    ±8 g (accelerometer)
  • Measurement range: ±12 gauss (magnetometer)
  • Supply current: 50mA
  • Case/enclosure?: Yes
  Notes:
  • Excluding mounting tabs.
  • Without included cable; 10 g with cable.
  • Note: The main UART pins, TX and RX, are 5V-tolerant and can be used directly with 5 V systems that are guaranteed to read 3.3 V as high. The secondary UART and some of the SPI pins are NOT 5V-tolerant.

  Product Documentation

  • Datasheet
  • Redshift Serial Interface software
  • Upgrading Firmware Instructions
  • UM7 Orientation Sensor Product Page