Welcome to Task 3


3B Dock, Pick and Place

Dock the rack using ebot towards robot arm and pick and place in dropbox

NOTE: Make sure you have pulled the latest repo as per the instructions given on page.

Task

  • Start your world using ros2 launch eyantra_warehouse task3a.launch.py command. To spawn your arm, start the launch file you created during the moveit_setup_assistant part, similar to task 2A.

(If all done correctly, you should see a world spawned with arm and eBot)

  • Navigate to the specified rack having the package mentioned in the configuration file as package_id. You can use the yaml python module to read the values.

(If the above link doesn't work, try to copy the content given below to a file named config.yaml, which should be created by you)

position:
    - rack1: [1.26, 4.34, 3.14]
    - rack2: [2.03, 3.3, -1.57]
    - rack3: [2.02, -8.09, 1.57]

package_id: [3]

  • Dock and bring the rack in front of the arm.

  • Find the TF of the aruco marker, and finally do manipulation of the robotic arm.

  • The arm should be able to pick the box from the rack and place it on the drop position (i.e. table kept behind the arm).

Formula:

Total_marks = (900-T) * 0.4 + ACI * 10 + ACP * 50 + ACD * 50 + ECN * 50 + ECP * 20 + ECD * 50 - P * 25

The abbreviation details are as follows:

  • T: Total time taken for the run. If it is found to be greater than 900 seconds, then the marks for the time will be made to zero.
  • ACI: Arm Correct Identification, parameter is increased when the TF is correctly published pointing to the Aruco marker’s centre position. The maximum value of this parameter is 1.
  • ACP: Arm Correct Position, parameter increases when the package is picked up using the magnetic gripper on the arm. The maximum value of this parameter is 1.
  • ACD: Arm Correct Drop, parameter increases when the package is dropped on the table kept behind the arm. The maximum value of this parameter is 1.
  • ECN: eBot Correct Navigation, parameter increases when the eBot is within the desired perimeter of the rack. Repeated attempts to enter into the area of the same rack will not yield to any additional marks. The maximum value of this parameter is 1.
  • ECP: eBot Correct Pick, parameter increases when the eBot has correctly docked and attached the rack with the eBot using magnet. The maximum value of this parameter is 1.
  • ECD: eBot Correct Drop, parameter increases when the eBot has correctly dropped the rack in front of the arm. The maximum value of this parameter is 1.
  • P: Penalty, parameter increases whenever the eBot or the arm is in collision state.

Finally, this task marks will be converted to a mark out of 50. The grading will be relative therefore the highest scored team will be having 50 marks.

NOTE: This task will be manually graded and therefore all the marks will be updated after the deadline.