forinkzan's profile - activity

Hi guys , i am a beginner for ROS. i write a urdf robot and attach diff_drive and hokuyo_laser plugin on it , with configure and use slam_gmapping i can teleop my 'robot(urdf)' in gazebo and build map . but still can't navigation in gazebo , i don't know ho w to do it . the question is ,when i spawn my model i see some warn ,i don't know.......

[ INFO] [1422432448.072115642, 0.023000000]: waitForService: Service [/gazebo/set_physics_properties] is now available.
[ INFO] [1422432448.133383656, 0.081000000]: Physics dynamic reconfigure ready.
[ INFO] [1422432497.779480058, 49.026000000]: Laser Plugin (robotNamespace = /), Info: Using the 'robotNamespace' param: '/'
[ INFO] [1422432497.779620674, 49.026000000]: Starting Laser Plugin (ns = /)!
[ INFO] [1422432497.847324932, 49.026000000]: Laser Plugin (ns = /)  <tf_prefix_>, set to ""
[ INFO] [1422432497.908139397, 49.026000000]: Starting plugin DiffDrive(ns = //)!
[ WARN] [1422432497.908227139, 49.026000000]: DiffDrive(ns = //): missing <rosDebugLevel> default is na
[ INFO] [1422432497.910157650, 49.026000000]: DiffDrive(ns = //): <tf_prefix> = 
[ WARN] [1422432497.910608101, 49.026000000]: DiffDrive(ns = //): missing <publishWheelTF> default is false
[ WARN] [1422432497.910649709, 49.026000000]: DiffDrive(ns = //): missing <publishWheelJointState> default is false
[ WARN] [1422432497.910940987, 49.026000000]: DiffDrive(ns = //): missing <wheelAcceleration> default is 0
[ WARN] [1422432497.910981351, 49.026000000]: DiffDrive(ns = //): missing <wheelTorque> default is 5
[ WARN] [1422432497.911654704, 49.026000000]: DiffDrive(ns = //): missing <odometrySource> default is 1
[ WARN] [1422432497.912120315, 49.026000000]: GazeboRosDiffDrive Plugin (ns = ) missing <publishTf>, defaults to 1
[ INFO] [1422432497.925900930, 49.026000000]: DiffDrive(ns = //): Try to subscribe to cmd_vel!
[ INFO] [1422432497.932386235, 49.026000000]: DiffDrive(ns = //): Subscribe to cmd_vel!
[ INFO] [1422432497.933865558, 49.026000000]: DiffDrive(ns = //): Advertise odom on odom !

hello everyone , i am a beginner for ros and i want to simulator a robot with sensor and can send odom msgs ,i already built a simple robot model , using arbotix and rviz and i can teleop it ; to add more , may i learn gazebo? where can i find a good tutorials? and what is gazebo , a visual tools like rviz ? or a simulator tools ? will i use gazebo to simulator and visual in rviz? thx for help~ and merry christmas~

Does any know how to build a 3d environment map? for example : if i want to build my office's 3d environment "map" and use it in gazebo , put my robot in it and simulate, just like the things willow garage do. are there some tool to do this work or i should learn opengl? thx~

hello everyone , i start gazebo with $ roscore & $ rosrun gazebo_ros gazebo, then i want to add a coke_can to it , and i type: $ rosrun gazebo_ros spawn_model -database coke_can -gazebo -model coke_can -y 1 but nothing happen in gazebo world . and the info in my terminate is below :

spawn_model script started
Deprecated: the -gazebo tag is now -sdf
[INFO] [WallTime: 1420599431.921951] [0.000000] Loading model xml from Gazebo Model Database
[INFO] [WallTime: 1420599431.922563] [0.000000] Waiting for service /gazebo/spawn_sdf_model
[INFO] [WallTime: 1420599431.925847] [0.000000] Calling service /gazebo/spawn_sdf_model
[INFO] [WallTime: 1420599441.933129] [619.918000] Spawn status: SpawnModel: Model pushed to spawn queue, but spawn service timed out waiting for model to appear in simulation under the name coke_can

if anyone know , please tell me , thx

me too , do you have any possible solution