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2016-04-27 16:19:40 -0500 | asked a question | How to run a servo using a pixhawk through MAVROS Offboard mode? Hi, I am using the a pixhawk connected to the odroid for a quadcopter. I am detecting the obstacles using a LIDAR. I am attaching the lidar to a servo so that I can do a lidar sweep.I am running the pixhawk in offboard mode and trying to control the servo motor through the auxiliary ports (AUX). We found a way in this link below. https://groups.google.com/forum/m/#!t... But the problem is that there is a problem in using nutshell with the pixhawk, Everytime I use the command below, I get either gibberish or a line saying that [Screen Is Terminating]. screen /dev/ttyACM0 BAUD_RATE 8N1 I have tried different baud rates like 57600 115200 921600 9600. None of them seem to work. Kindly let me know if you a solution for this or if there is an alternative to controlling the servo using pixhawk. Thanks, Vivek |
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2016-02-17 18:30:35 -0500 | asked a question | Unable to create a ros message as per the tutorial rosmsg show beginner_tutorials/Num I am getting the following error running the above command. Unable to load msg [beginner_tutorials/Num]: Cannot locate message [Num]: unknown package [beginner_tutorials] on search path [{'rosconsole': ['/opt/ros/indigo/share/rosconsole/msg'], 'catkin': ['/opt/ros/indigo/share/catkin/msg'], 'qt_dotgraph': ['/opt/ros/indigo/share/qt_dotgraph/msg'], 'urdf': ['/opt/ros/indigo/share/urdf/msg'], 'rosgraph': ['/opt/ros/indigo/share/rosgraph/msg'], 'rqt_py_console': ['/opt/ros/indigo/share/rqt_py_console/msg'], 'nodelet_topic_tools': ['/opt/ros/indigo/share/nodelet_topic_tools/msg'], 'rqt_graph': ['/opt/ros/indigo/share/rqt_graph/msg'], 'nodelet_tutorial_math': ['/opt/ros/indigo/share/nodelet_tutorial_math/msg'], 'qt_gui': ['/opt/ros/indigo/share/qt_gui/msg'], 'filters': ['/opt/ros/indigo/share/filters/msg'], 'smclib': ['/opt/ros/indigo/share/smclib/msg'], 'rosparam': ['/opt/ros/indigo/share/rosparam/msg'], 'roscpp_serialization': ['/opt/ros/indigo/share/roscpp_serialization/msg'], 'diagnostic_msgs': ['/opt/ros/indigo/share/diagnostic_msgs/msg'], 'rosbuild': ['/opt/ros/indigo/share/rosbuild/msg'], 'libmavconn': ['/opt/ros/indigo/share/libmavconn/msg'], 'tf': ['/opt/ros/indigo/share/tf/msg'], 'rqt_publisher': ['/opt/ros/indigo/share/rqt_publisher/msg'], 'roslang': ['/opt/ros/indigo/share/roslang/msg'], 'geometric_shapes': ['/opt/ros/indigo/share/geometric_shapes/msg'], 'smach_ros': ['/opt/ros/indigo/share/smach_ros/msg'], 'rqt_web': ['/opt/ros/indigo/share/rqt_web/msg'], 'shape_msgs': ['/opt/ros/indigo/share/shape_msgs/msg'], 'trajectory_msgs': ['/opt/ros/indigo/share/trajectory_msgs/msg'], 'diagnostic_aggregator': ['/opt/ros/indigo/share/diagnostic_aggregator/msg'], 'mavros': ['/opt/ros/indigo/share/mavros/msg'], 'smach_msgs': ['/opt/ros/indigo/share/smach_msgs/msg'], 'resource_retriever': ['/opt/ros/indigo/share/resource_retriever/msg'], 'rqt_topic': ['/opt/ros/indigo/share/rqt_topic/msg'], 'smach': ['/opt/ros/indigo/share/smach/msg'], 'rqt_action': ['/opt/ros/indigo/share/rqt_action/msg'], 'xacro': ['/opt/ros/indigo/share/xacro/msg'], 'rqt_top': ['/opt/ros/indigo/share/rqt_top/msg'], 'rqt_rviz': ['/opt/ros/indigo/share/rqt_rviz/msg'], 'rosgraph_msgs': ['/opt/ros/indigo/share/rosgraph_msgs/msg'], 'rosboost_cfg': ['/opt/ros/indigo/share/rosboost_cfg/msg'], 'genmsg': ['/opt/ros/indigo/share/genmsg/msg'], 'control_toolbox': ['/opt/ros/indigo/share/control_toolbox/msg'], 'turtle_tf2': ['/opt/ros/indigo/share/turtle_tf2/msg'], 'rqt_robot_dashboard': ['/opt/ros/indigo/share/rqt_robot_dashboard/msg'], 'pluginlib': ['/opt/ros/indigo/share/pluginlib/msg'], 'xmlrpcpp': ['/opt/ros/indigo/share/xmlrpcpp/msg'], 'rqt_service_caller': ['/opt/ros/indigo/share/rqt_service_caller/msg'], 'rqt_msg': ['/opt/ros/indigo/share/rqt_msg/msg'], 'mavros_extras': ['/opt/ros/indigo/share/mavros_extras/msg'], 'rosnode': ['/opt/ros/indigo/share/rosnode/msg'], 'rqt_pose_view': ['/opt/ros/indigo/share/rqt_pose_view/msg'], 'rosclean': ['/opt/ros/indigo/share/rosclean/msg'], 'bond': ['/opt/ros/indigo/share/bond/msg'], 'self_test': ['/opt/ros/indigo/share/self_test/msg'], 'image_geometry': ['/opt/ros/indigo/share/image_geometry/msg'], 'rospack': ['/opt/ros/indigo/share/rospack/msg'], 'actionlib_msgs': ['/opt/ros/indigo/share/actionlib_msgs/msg'], 'mavros_msgs': ['/opt/ros/indigo/share/mavros_msgs/msg'], 'rqt_image_view': ['/opt/ros/indigo/share/rqt_image_view/msg'], 'roslisp': ['/opt/ros/indigo/share/roslisp/msg'], 'rqt_console': ['/opt/ros/indigo/share/rqt_console/msg'], 'joint_state_publisher': ['/opt/ros/indigo/share/joint_state_publisher/msg'], 'rviz_plugin_tutorials': ['/opt/ros/indigo/share/rviz_plugin_tutorials/msg'], 'tf2_msgs': ['/opt/ros/indigo/share/tf2_msgs/msg'], 'python_qt_binding': ['/opt/ros/indigo/share/python_qt_binding/msg'], 'laser_geometry': ['/opt/ros/indigo/share/laser_geometry/msg'], 'rviz': ['/opt/ros/indigo/share/rviz/msg'], 'gencpp': ['/opt/ros/indigo/share/gencpp/msg'], 'rqt_gui_cpp': ['/opt/ros/indigo/share/rqt_gui_cpp/msg'], 'rqt_bag': ['/opt/ros/indigo/share/rqt_bag/msg'], 'rqt_gui ... (more) |
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2016-02-07 19:58:31 -0500 | commented answer | beginner_tutorials/msg/Num.msg: Invalid declaration: int 64 num Thank you! |
2016-02-07 19:16:11 -0500 | asked a question | beginner_tutorials/msg/Num.msg: Invalid declaration: int 64 num Whenever I open my terminal I get the following warning ROS_DISTRO was set to 'jade' before. Please make sure that the environment does not mix paths from different distributions. Also when I run catkin-make I get the following error: (more) |