Training a arm to grasp a moving object run roslaunch my_sawyer_openai_examples start_training_v2.launch roslaunch haro_description my_move_block.launch rostopic pub -1 /block/cmd_vel geometry_msgs/Twist "linear: x: 0.10 y: 0.0 z: 0.0 angular: x: 0.0 y: 0.0 z: -0.50"