Quiz Correction - tf_quiz

1

Hi!
I’ve solved the tf_quiz and checked that all it is all right:

  • the tf_tree is complete;
  • I can visualize the TFs and the real robot both moves synchronously;
  • the package is called tf_quiz;
  • the launch is called tf_quiz.launch;
  • I’ve stropped the robot_state_publisher and the joint_state_publisher launched in prior exercises.

Now I’ve sent my solution 3/5 times and everytime obtained a score of 7/10. I don’t know what is wrong, no partial results appear.
I found that for other users there is the same problem and they’ve solved resending the quiz or through the help of the staff. What I’ve to do?

Thanks for your time.

2

Hello @umberto.severino,

Send me your package to aezquerro@theconstructsim.com and I’ll try to check as soon as possible.

Best,

3

Hello @umberto.severino,

The problem here is with the controllers’ names. The quiz is expecting the same names used during the Unit, which are:

head_pan_joint_position_controller 
head_tilt_joint_position_controller 
torso_joint_position_controller 
left_shoulder_forward_joint_position_controller 
right_shoulder_forward_joint_position_controller 
left_shoulder_up_joint_position_controller 
right_shoulder_up_joint_position_controller 
left_elbow_joint_position_controller 
right_elbow_joint_position_controller 
left_wrist_joint_position_controller 
right_wrist_joint_position_controller 
joint_state_controller

However, the names you are using are without the position keyword. This is what’s causing you to fail in one of the steps of the correction. I will update the notebook to make this clear.

Best,