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Error reading from SCI port. No data. Turtlebot disconnects when set Full Mode

asked 2012-07-08 07:39:49 -0500

Roman Burdakov gravatar image

updated 2016-10-24 08:59:40 -0500

ngrennan gravatar image

Hi, there,

I have recently upgraded to Fuerte on Ubuntu 12.04. I tried to build SLAM map by following http://www.ros.org/wiki/turtlebot_navigation/Tutorials/Build%20a%20map%20with%20SLAM tutorial, but after I execute roslaunch turtlebot_navigation gmapping_demo.launch I receive error - "Failed to contact device with error: [Error reading from SCI port. No data.]. Please check that the Create is powered on and that the connector is plugged into the Create."

turtlebot@turtlebot-1215N:~$ sudo service turtlebot start
turtlebot start/running, process 4564
turtlebot@turtlebot-1215N:~$ roslaunch turtlebot_navigation gmapping_demo.launch
... logging to /home/turtlebot/.ros/log/0c768eee-c921-11e1-8666-485d60f51088/roslaunch-turtlebot-1215N-5175.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://192.168.1.6:41858/

SUMMARY
========

PARAMETERS
 * /kinect_laser/max_height
 * /kinect_laser/min_height
 * /kinect_laser/output_frame_id
 * /kinect_laser_narrow/max_height
 * /kinect_laser_narrow/min_height
 * /kinect_laser_narrow/output_frame_id
 * /move_base/TrajectoryPlannerROS/acc_lim_th
 * /move_base/TrajectoryPlannerROS/acc_lim_x
 * /move_base/TrajectoryPlannerROS/acc_lim_y
 * /move_base/TrajectoryPlannerROS/dwa
 * /move_base/TrajectoryPlannerROS/goal_distance_bias
 * /move_base/TrajectoryPlannerROS/heading_lookahead
 * /move_base/TrajectoryPlannerROS/holonomic_robot
 * /move_base/TrajectoryPlannerROS/max_rotational_vel
 * /move_base/TrajectoryPlannerROS/max_vel_x
 * /move_base/TrajectoryPlannerROS/min_in_place_rotational_vel
 * /move_base/TrajectoryPlannerROS/min_vel_x
 * /move_base/TrajectoryPlannerROS/oscillation_reset_dist
 * /move_base/TrajectoryPlannerROS/path_distance_bias
 * /move_base/TrajectoryPlannerROS/sim_time
 * /move_base/TrajectoryPlannerROS/vtheta_samples
 * /move_base/TrajectoryPlannerROS/vx_samples
 * /move_base/TrajectoryPlannerROS/xy_goal_tolerance
 * /move_base/TrajectoryPlannerROS/yaw_goal_tolerance
 * /move_base/controller_frequency
 * /move_base/global_costmap/footprint
 * /move_base/global_costmap/footprint_padding
 * /move_base/global_costmap/global_frame
 * /move_base/global_costmap/inflation_radius
 * /move_base/global_costmap/observation_sources
 * /move_base/global_costmap/obstacle_range
 * /move_base/global_costmap/publish_frequency
 * /move_base/global_costmap/raytrace_range
 * /move_base/global_costmap/robot_base_frame
 * /move_base/global_costmap/scan/clearing
 * /move_base/global_costmap/scan/data_type
 * /move_base/global_costmap/scan/marking
 * /move_base/global_costmap/scan/topic
 * /move_base/global_costmap/static_map
 * /move_base/global_costmap/transform_tolerance
 * /move_base/global_costmap/update_frequency
 * /move_base/local_costmap/footprint
 * /move_base/local_costmap/footprint_padding
 * /move_base/local_costmap/global_frame
 * /move_base/local_costmap/height
 * /move_base/local_costmap/inflation_radius
 * /move_base/local_costmap/observation_sources
 * /move_base/local_costmap/obstacle_range
 * /move_base/local_costmap/publish_frequency
 * /move_base/local_costmap/raytrace_range
 * /move_base/local_costmap/resolution
 * /move_base/local_costmap/robot_base_frame
 * /move_base/local_costmap/rolling_window
 * /move_base/local_costmap/scan/clearing
 * /move_base/local_costmap/scan/data_type
 * /move_base/local_costmap/scan/marking
 * /move_base/local_costmap/scan/topic
 * /move_base/local_costmap/static_map
 * /move_base/local_costmap/transform_tolerance
 * /move_base/local_costmap/update_frequency
 * /move_base/local_costmap/width
 * /openni_launch/debayering
 * /openni_launch/depth_frame_id
 * /openni_launch/depth_mode
 * /openni_launch/depth_registration
 * /openni_launch/depth_time_offset
 * /openni_launch/image_mode
 * /openni_launch/image_time_offset
 * /openni_launch/rgb_frame_id
 * /pointcloud_throttle/max_rate
 * /rosdistro
 * /rosversion
 * /slam_gmapping/angularUpdate
 * /slam_gmapping/astep
 * /slam_gmapping/delta
 * /slam_gmapping/iterations
 * /slam_gmapping/kernelSize
 * /slam_gmapping/lasamplerange
 * /slam_gmapping/lasamplestep
 * /slam_gmapping/linearUpdate
 * /slam_gmapping/llsamplerange
 * /slam_gmapping/llsamplestep
 * /slam_gmapping/lsigma
 * /slam_gmapping/lskip
 * /slam_gmapping/lstep
 * /slam_gmapping/map_update_interval
 * /slam_gmapping/maxUrange
 * /slam_gmapping/odom_frame
 * /slam_gmapping/ogain
 * /slam_gmapping/particles
 * /slam_gmapping/resampleThreshold
 * /slam_gmapping/sigma
 * /slam_gmapping/srr
 * /slam_gmapping/srt
 * /slam_gmapping/str
 * /slam_gmapping/stt
 * /slam_gmapping/temporalUpdate
 * /slam_gmapping/xmax
 * /slam_gmapping/xmin
 * /slam_gmapping/ymax
 * /slam_gmapping/ymin

NODES
  /
    kinect_breaker_enabler (turtlebot_node/kinect_breaker_enabler.py)
    kinect_laser (nodelet/nodelet)
    kinect_laser_narrow (nodelet/nodelet)
    move_base (move_base/move_base)
    openni_launch (nodelet/nodelet)
    openni_manager (nodelet/nodelet)
    pointcloud_throttle (nodelet/nodelet)
    slam_gmapping (gmapping/slam_gmapping)

ROS_MASTER_URI=http://192.168.1.6:11311

core service [/rosout] found
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[kinect_breaker_enabler-1]: started with pid [5204]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[openni_manager-2]: started with pid [5205]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib ...
(more)
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1 Answer

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answered 2012-07-13 10:15:30 -0500

mmwise gravatar image

if you have a DMM (multimeter) please measure the voltage across the battery to make sure that it is fully charged.

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Asked: 2012-07-08 07:39:49 -0500

Seen: 1,649 times

Last updated: Jul 08 '12