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I'm using old code (from october 2011) in which i've changed some functions. About the questions you made:
1- tf_monitor in the workstation which has the turtlebot-laptop as a roscore. But if i run tf_monitor in turtlebot-laptop I get the tf. That might be the problem...so if I run tf_monitor in the workstation I get what I said before, if I run it in the turtlebot-laptop:
RESULTS: for all Frames Frames: Frame: /base_footprint published by /robot_pose_ekf Average Delay: 0.0797196 Max Delay: 0.105396 Frame: /base_link published by /robot_state_publisher Average Delay: -0.487194 Max Delay: 0 Frame: /front_wheel_link published by /robot_state_publisher Average Delay: -0.487173 Max Delay: 0 Frame: /gyro_link published by /robot_state_publisher Average Delay: -0.487172 Max Delay: 0 Frame: /kinect_depth_frame published by /robot_state_publisher Average Delay: -0.48717 Max Delay: 0 Frame: /kinect_depth_optical_frame published by /robot_state_publisher Average Delay: -0.487169 Max Delay: 0 Frame: /kinect_link published by /robot_state_publisher Average Delay: -0.48719 Max Delay: 0 Frame: /kinect_rgb_frame published by /robot_state_publisher Average Delay: -0.487167 Max Delay: 0 Frame: /kinect_rgb_optical_frame published by /robot_state_publisher Average Delay: -0.487166 Max Delay: 0 Frame: /laser published by /robot_state_publisher Average Delay: -0.487164 Max Delay: 0 Frame: /left_cliff_sensor_link published by /robot_state_publisher Average Delay: -0.487188 Max Delay: 0 Frame: /left_wheel_link published by /robot_state_publisher Average Delay: -0.938744 Max Delay: 0 Frame: /leftfront_cliff_sensor_link published by /robot_state_publisher Average Delay: -0.487185 Max Delay: 0 Frame: /plate_0_link published by /robot_state_publisher Average Delay: -0.487163 Max Delay: 0 Frame: /plate_1_link published by /robot_state_publisher Average Delay: -0.487161 Max Delay: 0 Frame: /plate_2_link published by /robot_state_publisher Average Delay: -0.487159 Max Delay: 0 Frame: /plate_3_link published by /robot_state_publisher Average Delay: -0.487158 Max Delay: 0 Frame: /rear_wheel_link published by /robot_state_publisher Average Delay: -0.487156 Max Delay: 0 Frame: /right_cliff_sensor_link published by /robot_state_publisher Average Delay: -0.487181 Max Delay: 0 Frame: /right_wheel_link published by /robot_state_publisher Average Delay: -0.938737 Max Delay: 0 Frame: /rightfront_cliff_sensor_link published by /robot_state_publisher Average Delay: -0.487179 Max Delay: 0 Frame: /spacer_0_link published by /robot_state_publisher Average Delay: -0.487155 Max Delay: 0 Frame: /spacer_1_link published by /robot_state_publisher Average Delay: -0.487153 Max Delay: 0 Frame: /spacer_2_link published by /robot_state_publisher Average Delay: -0.487152 Max Delay: 0 Frame: /spacer_3_link published by /robot_state_publisher Average Delay: -0.48715 Max Delay: 0 Frame: /standoff_2in_0_link published by /robot_state_publisher Average Delay: -0.487149 Max Delay: 0 Frame: /standoff_2in_1_link published by /robot_state_publisher Average Delay: -0.487147 Max Delay: 0 Frame: /standoff_2in_2_link published by /robot_state_publisher Average Delay: -0.487145 Max Delay: 0 Frame: /standoff_2in_3_link published by /robot_state_publisher Average Delay: -0.487143 Max Delay: 0 Frame: /standoff_2in_4_link published by /robot_state_publisher Average Delay: -0.487142 Max Delay: 0 Frame: /standoff_2in_5_link published by /robot_state_publisher Average Delay: -0.48714 Max Delay: 0 Frame: /standoff_2in_6_link published by /robot_state_publisher Average Delay: -0.487137 Max Delay: 0 Frame: /standoff_2in_7_link published by /robot_state_publisher Average Delay: -0.487135 Max Delay: 0 Frame: /standoff_8in_0_link published by /robot_state_publisher Average Delay: -0.487133 Max Delay: 0 Frame: /standoff_8in_1_link published by /robot_state_publisher Average Delay: -0.487131 Max Delay: 0 Frame: /standoff_8in_2_link published by /robot_state_publisher Average Delay: -0.487129 Max Delay: 0 Frame: /standoff_8in_3_link published by /robot_state_publisher Average Delay: -0.487127 Max Delay: 0 Frame: /standoff_kinect_0_link published by /robot_state_publisher Average Delay: -0.487125 Max Delay: 0 Frame: /standoff_kinect_1_link published by /robot_state_publisher Average Delay: -0.487123 Max Delay: 0 Frame: /wall_sensor_link published by /robot_state_publisher Average Delay: -0.487176 Max Delay: 0 All Broadcasters: Node: /robot_pose_ekf 10.6606 Hz, Average Delay: 0.0797196 Max Delay: 0.105396 Node: /robot_state_publisher 31.6155 Hz, Average Delay: -0.505588 Max Delay: 0
2- I start up turtlebot running: roslaunch turtlebot_bringup minimal.launch
3- rosnode list (both comptuers have the same):
/app_manager /diagnostic_aggregator /kinect_laser /kinect_laser_narrow /master_sync_turtlebot_21981_8962449149015034565 /openni_camera /openni_manager /pointcloud_throttle /robot_pose_ekf /robot_state_publisher /rosout /turtlebot_laptop_battery /turtlebot_node
4 - rostopic list (both comptuers have the same):
/cmd_vel /diagnostics /diagnostics_agg /diagnostics_toplevel_state /imu/data /joint_states /odom /robot_pose_ekf/odom /rosout /rosout_agg /tf /turtlebot/app_list /turtlebot/application/app_status /turtlebot_node/parameter_descriptions /turtlebot_node/parameter_updates /turtlebot_node/sensor_state
5 - I do not understand the quetion. I'm using a turtlebot but instead of an iCreate I use a Roomba 500 which is more or less the same.
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