UM7-LT Orientation Sensor
Specifications
- Dimensions: 1.06" x 1.02" x 0.26"
- Weight: 3.5g (.012oz)
- Interface: TTL serial, SPI
- Minimum Operating Voltage: 4V
- Maximum Operating Voltage: 5.5V
- Maximum Logic Voltage: 3.3V (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.)
- Axes: Pitch (x), Roll (y), and Yaw (z)
- Measurement Range:
- Gyro: ±2000°/s
- Accelerometer: ±8 g
- Magnetometer: ±12 gauss
- Supply Current: 50mA
- Case Enclosure Not Included
Features
- 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
- 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
- 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
Product Documentation
The UM7 orientation sensor is a third-generation Attitude and Heading Reference System (AHRS) from Redshift Labs that produce attitude and heading estimates from the 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.
Connections for power and TTL serial communication can be made to the UM7 through a polarized five-pin male connector on one side, which mates with an included cable assembly. A pair of six-pin expansion headers on the other side of the board provide additional connectivity options, including an alternative SPI interface and a secondary serial interface that can be connected to an external GPS module. Additional cable assemblies for the expansion headers are not included.
UM7-LT Orientation Sensor
- Product Code: TS-085-UM7
- Brand: Pololu
- MPN: 2763
- Availability: This product or this version of the product is not being sold anymore.
