Version: ROS 2 Humble

Redshift Labs UM7

Item Numbers

Description	CPR Item	Sales Kit	Installation Kit, With Fasteners
Redshift Labs UM7 sensor	011914	028881	028880

Specifications

Description	Value
Mass	11 g
Voltage, Minimum	4 V
Voltage, Maximum	5.5 V
Voltage, Sensor	5 V
Power, Average	0.25 W
Data	UART ( RS-232 ) Default setting is 115200 baud
Ingress Protection, Solids	Unknown ( assume 4 )
Ingress Protection, Liquids	Unknown ( assume 0 )
Operating Temperature, Min	-40 °C
Operating Temperature, Max	85 °C

Software Bringup

This sensor is included in the Clearpath Robotics robot package that is installed on all of our robots. This allows you to add or remove the sensor from your robot's software description by modifying the robot configuration yaml.

imu:
  - model: redshift_um7
    urdf_enabled: true
    launch_enabled: true
    parent: base_link
    xyz: [0.0, 0.0, 0.0]
    rpy: [0.0, 0.0, 0.0]
    ros_parameters:
      um7_driver:
        port: /dev/clearpath/imu
        frame_id: imu_0_link
        tf_ned_to_enu: true

Package and Setup

The RedShift UM7 IMU uses the umx_driver ROS 2 package. The driver is open source, maintained by the ROS community, and hosted on GitHub.

For more specifics on the way Clearpath's configuration system launches the umx_driver, see the RedShift UM7 launch file and the default parameter file in clearpath_sensors.

Device Path

The port ROS parameter must be set to the device path of the RedShift UM7. To simplify this process, use the /dev/clearpath/imu path. This path is only available when the Clearpath robot UDEV rules are installed. These are installed alongside the clearpath_robot package. If the IMU is connected, but the /dev/clearpath/imu device is not, check the file /lib/udev/rules.d/60-ros-humble-clearpath-robot.rules exists.

Troubleshooting

Clearpath is committed to your success. Please get in touch with us and we will do our best to get you rolling again quickly: support@clearpathrobotics.com.

To get in touch with a salesperson regarding Clearpath Robotics products, please email research-sales@clearpathrobotics.com.

If you have an issue that is specifically about ROS and is something which may be of interest to the broader community, consider asking it on https://robotics.stackexchange.com. If you do not get a satisfactory response, please ping us and include a link to your question as posted there. If appropriate, we will answer in the ROS Answers context for the benefit of the community.

Item Numbers​

Specifications​

Software Bringup​

Package and Setup​

Device Path​

Troubleshooting​

Further Reading​