roslaunch error:failed to load nodelet

[numb0824]

hi, my env is"ros-melodic+ubuntu18.04",this is my steps for installing:

1. git clone -b melodic git@github.com:ccny-ros-pkg/imu_tools.git
2. cd ..
3. catkin_make
4. error,need to use "catkin_make_isolated" instead
5. catkin_make_isolated
6. source devel_isolated/setup.bash
7. roslaunch imu_complementary_filter complementary_filter.launch
8. and ,the error is : [ERROR] [1611281100.706213861]: Failed to load nodelet [/PhidgetsImuNodelet] of type [phidgets_imu/PhidgetsImuNodelet] even after refreshing the cache: According to the loaded plugin descriptions the class phidgets_imu/PhidgetsImuNodelet with base class type nodelet::Nodelet does not exist. Declared types are RobotLocalization/EkfNodelet RobotLocalization/NavSatTransformNodelet RobotLocalization/UkfNodelet SlamGMappingNodelet depth_image_proc/convert_metric depth_image_proc/crop_foremost depth_image_proc/disparity depth_image_proc/point_cloud_xyz depth_image_proc/point_cloud_xyz_radial depth_image_proc/point_cloud_xyzi depth_image_proc/point_cloud_xyzi_radial depth_image_proc/point_cloud_xyzrgb depth_image_proc/register image_proc/crop_decimate image_proc/crop_nonZero image_proc/crop_non_zero image_proc/debayer image_proc/rectify image_proc/resize image_publisher/image_publisher image_rotate/image_rotate image_view/disparity image_view/image imu_filter_madgwick/ImuFilterNodelet libuvc_camera/driver nodelet_tutorial_math/Plus octomap_color_server/OctomapServerNodelet octomap_server/OctomapServerNodelet pcl/BAGReader pcl/BoundaryEstimation pcl/ConvexHull2D pcl/CropBox pcl/EuclideanClusterExtraction pcl/ExtractIndices pcl/ExtractPolygonalPrismData pcl/FPFHEstimation pcl/FPFHEstimationOMP pcl/MomentInvariantsEstimation pcl/MovingLeastSquares pcl/NodeletDEMUX pcl/NodeletMUX pcl/NormalEstimation pcl/NormalEstimationOMP pcl/NormalEstimationTBB pcl/PCDReader pcl/PCDWriter pcl/PFHEstimation pcl/PassThrough pcl/PointCloudConcatenateDataSynchronizer pcl/PointCloudConcatenateFieldsSynchronizer pcl/PrincipalCurvaturesEstimation pcl/ProjectInliers pcl/RadiusOutlierRemoval pcl/SACSegmentation pcl/SACSegmentationFromNormals pcl/SHOTEstimation pcl/SHOTEstimationOMP pcl/SegmentDifferences pcl/StatisticalOutlierRemoval pcl/VFHEstimation pcl/VoxelGrid stereo_image_proc/disparity stereo_image_proc/point_cloud2 usb_cam_hardware/USBCamHardware yocs_cmd_vel_mux/CmdVelMuxNodelet [ERROR] [1611281100.706246587]: The error before refreshing the cache was: According to the loaded plugin descriptions the class phidgets_imu/PhidgetsImuNodelet with base class type nodelet::Nodelet does not exist. Declared types are RobotLocalization/EkfNodelet RobotLocalization/NavSatTransformNodelet RobotLocalization/UkfNodelet SlamGMappingNodelet depth_image_proc/convert_metric depth_image_proc/crop_foremost depth_image_proc/disparity depth_image_proc/point_cloud_xyz depth_image_proc/point_cloud_xyz_radial depth_image_proc/point_cloud_xyzi depth_image_proc/point_cloud_xyzi_radial depth_image_proc/point_cloud_xyzrgb depth_image_proc/register image_proc/crop_decimate image_proc/crop_nonZero image_proc/crop_non_zero image_proc/debayer image_proc/rectify image_proc/resize image_publisher/image_publisher image_rotate/image_rotate image_view/disparity image_view/image imu_filter_madgwick/ImuFilterNodelet libuvc_camera/driver nodelet_tutorial_math/Plus octomap_color_server/OctomapServerNodelet octomap_server/OctomapServerNodelet pcl/BAGReader pcl/BoundaryEstimation pcl/ConvexHull2D pcl/CropBox pcl/EuclideanClusterExtraction pcl/ExtractIndices pcl/ExtractPolygonalPrismData pcl/FPFHEstimation pcl/FPFHEstimationOMP pcl/MomentInvariantsEstimation pcl/MovingLeastSquares pcl/NodeletDEMUX pcl/NodeletMUX pcl/NormalEstimation pcl/NormalEstimationOMP pcl/NormalEstimationTBB pcl/PCDReader pcl/PCDWriter pcl/PFHEstimation pcl/PassThrough pcl/PointCloudConcatenateDataSynchronizer pcl/PointCloudConcatenateFieldsSynchronizer pcl/PrincipalCurvaturesEstimation pcl/ProjectInliers pcl/RadiusOutlierRemoval pcl/SACSegmentation pcl/SACSegmentationFromNormals pcl/SHOTEstimation pcl/SHOTEstimationOMP pcl/SegmentDifferences pcl/StatisticalOutlierRemoval pcl/VFHEstimation pcl/VoxelGrid stereo_image_proc/disparity stereo_image_proc/point_cloud2 usb_cam_hardware/USBCamHardware yocs_cmd_vel_mux/CmdVelMuxNodelet [FATAL] [1611281100.706332171]: Failed to load nodelet '/PhidgetsImuNodeletof typephidgets_imu/PhidgetsImuNodeletto managerimu_manager' [PhidgetsImuNodelet-2] process has died [pid 12154, exit code 255, cmd /opt/ros/melodic/lib/nodelet/nodelet load phidgets_imu/PhidgetsImuNodelet imu_manager name:=PhidgetsImuNodelet log:=/home/whx/.ros/log/c16167c0-5c52-11eb-9a7a-c0e43482dfff/PhidgetsImuNodelet-2.log]. log file: /home/whx/.ros/log/c16167c0-5c52-11eb-9a7a-c0e43482dfff/PhidgetsImuNodelet-2*.log

could someone have met the same problem?

[mintar]

The launch file is just an example. If you really want to use the Phidgets IMU, run this command first:

sudo apt install ros-melodic-phidgets-imu

Then the launch file will work. If you have a different IMU, replace the part in the launch file with your own IMU driver instead.