Robot Deep Learning (Your first Robot With ROS) issues encountered

Hi RobotIgnite, All,

I tried to run the roslaunch my_rosbots_training start_training.launch for exercise 6.3

and I see the below message, the robot doesnt move…,

I had followed all the instructions and codes in the tutorial…this launch is going no where…, any help please?

user:~$ roslaunch my_rosbots_training start_training.launch
... logging to /home/user/.ros/log/c6baac66-9670-11ea-80a6-067d79f5ac6a/roslaunch-rosdscomputer-22458.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://rosdscomputer:36657/


 * /rosbots/alpha: 0.01
 * /rosbots/alpha_decay: 0.01
 * /rosbots/angular_speed: 0.45
 * /rosbots/batch_size: 64
 * /rosbots/cur_lane_offset: 1.51
 * /rosbots/end_episode_points: 200
 * /rosbots/episodes_training: 1000
 * /rosbots/epsilon: 1.0
 * /rosbots/epsilon_decay: 0.995
 * /rosbots/epsilon_min: 0.01
 * /rosbots/follow_lane_reward: 5
 * /rosbots/gamma: 1.0
 * /rosbots/init_linear_forward_speed: 0.0
 * /rosbots/init_linear_turn_speed: 0.0
 * /rosbots/left_right_reward: 2.5
 * /rosbots/linear_forward_speed: 1.5
 * /rosbots/linear_turn_speed: 0.1
 * /rosbots/look_ahead_distance: 100
 * /rosbots/max_lane_offset: 1.5
 * /rosbots/min_episodes: 100
 * /rosbots/monitor: True
 * /rosbots/n_actions: 3
 * /rosbots/n_observations: 19200
 * /rosbots/n_win_ticks: 250
 * /rosbots/number_decimals_precision_obs: 4
 * /rosbots/quiet: False
 * /rosbots/safe_lane_offset: -1.5
 * /rosbots/speed_step: 1.0
 * /rosbots/veer_off_reward: -10
 * /rosdistro: kinetic
 * /rosversion: 1.12.14

    rosbots_n1try_algorithm (my_rosbots_training/


process[rosbots_n1try_algorithm-1]: started with pid [22782]
/usr/local/lib/python2.7/dist-packages/requests/ RequestsDependencyWarning: urllib3 (1.25.8) or chardet (2.3.0) doesn't match a supported version!
/usr/local/lib/python2.7/dist-packages/requests/ RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
  warnings.warn(warning, RequestsDependencyWarning)
Using TensorFlow backend.
2020-05-15 07:05:38.522326: W tensorflow/stream_executor/platform/default/] Could not load dynamiclibrary ''; dlerror: cannot open shared object file: No such file or directory; LD_LIBRARY_PATH: /opt/ros/kinetic/share/euslisp/jskeus/eus//Linux64/lib:/home/user/catkin_ws/devel/lib:/home/simulations/public_sim_ws/devel/lib:/opt/ros/kinetic/lib:/opt/ros/kinetic/lib/x86_64-linux-gnu:/opt/ros/kinetic/share/euslisp/jskeus/eus//Linux64/lib:/opt/ros/kinetic/share/euslisp/jskeus/eus//Linux64/lib:/usr/local/cuda-10.2/lib64:/home/user/.catkin_ws_python3/src/TensorRT-

it seems like it cannot open the TensorFlow library or something…,

Thank you,

Kind Regards,

That message is normal, ist because we are using a NON GPU version of Tensorflow, but that warning is totally normal.

I followed the instructions by just copying apasting and I had the robot training.
I’ve posted in this git the package with teh solution. Please , havea look at it because you might have missed launching something. Remember that you have to launch:

roslaunch ros_imresize imresize.launch
roslaunch my_rosbots_training start_training.launch


Hi @duckfrost,

So you had this robot training running in the RobotIgnite web browser right?

Thanks for the solution package, I will give it a go again,

Thank you,

Kind Regards

Hi @duckfrost,

I got it running thanks finally,

but it seems the cmake.txt and package.xml has been modified as well which wasnt instructed in the lesson, also, I didnt know I need to run roslaunch ros_imresize imresize.launch this first and then start_training.launch …, I didnt see this was stated in the lesson, …after copy and pasting your files, it started to work…the files I used in the lesson didnt work!.., which was confusing…,

Now my query is, the robot moves along the yellow line until a certain point and then it start over again, (highlighted in the screenshot below), it moves to that spot and then it starts again,

Please advise on why that is…,

Thank you for your help,

Kind Regards,

Hi @duckfrost,

Any updates on my query below?

Thank you ,

Kind Regards

Hi @duckfrost,

Any suggestion for my query above please?
I’m still waiting for an answer, on why the training loops and does not continue on…,