#PEAR_Config 0.9 a:12:{s:7:"php_dir";s:67:"//pear/php";s:8:"data_dir";s:68:"//pear/data";s:7:"www_dir";s:67:"//pear/www";s:7:"cfg_dir";s:67:"//pear/cfg";s:7:"ext_dir";s:67:"//pear/ext";s:7:"doc_dir";s:68:"//pear/docs";s:8:"test_dir";s:69:"//pear/tests";s:9:"cache_dir";s:69:"//pear/cache";s:12:"download_dir";s:72:"//pear/download";s:8:"temp_dir";s:68:"//pear/temp";s:7:"bin_dir";s:63:"//pear";s:7:"man_dir";s:67:"//pear/man";}#PEAR_Config 0.9 a:12:{s:7:"php_dir";s:67:"//pear/php";s:8:"data_dir";s:68:"//pear/data";s:7:"www_dir";s:67:"//pear/www";s:7:"cfg_dir";s:67:"//pear/cfg";s:7:"ext_dir";s:67:"//pear/ext";s:7:"doc_dir";s:68:"//pear/docs";s:8:"test_dir";s:69:"//pear/tests";s:9:"cache_dir";s:69:"//pear/cache";s:12:"download_dir";s:72:"//pear/download";s:8:"temp_dir";s:68:"//pear/temp";s:7:"bin_dir";s:63:"//pear";s:7:"man_dir";s:67:"//pear/man";} Week 2/9 – HAWON LEE
Skip to content

Week 2/9

6/28/2021

Description:
Robot Operating System basic creations.

Synopsis:
Basic items will be created in the Robot Operating System to set up a workspace. Methods to create nodes will be researched.

Data:
A catkin workspace was setup and packages were created. Simple code in python was created within the package.

6/29/2021

Description:
Nodes in the Robot Operating System.

Synopsis:
Methods to make nodes into publishers and subscribers will be researched and utilized.

Data:
In ROS, nodes can be publishers or subscribers to a certain topic. When a publisher publishes a message to a topic, a subscriber of that method can receive the message.

6/30/2021

Description:
Sending and receiving messages with the Robot Operating System.

Synopsis:
Methods for sending and receiving messages from a node with the Robot Operating System (ROS) will be researched.

Data:
FILL IN

7/1/2021

Description:
Multiple nodes in the Robot Operating System.

Synopsis:
Multiple nodes will be created with the Robot Operating System (ROS).

Data:
Four nodes were created and assigned to be a publisher or a subscriber. The first node was created to be a publisher and the other three nodes were created to be subscribers. The three subscribers receive messages from the publisher.

7/2/2021

Description:
Sending messages between nodes in the Robot Operating System.

Synopsis:
The nodes that were created will be programmed to send messages to each other.

Data:
The publisher node publishes its message, the time, to a topic and two of the subscriber nodes receive this message. One of the nodes is both a subscriber and a publisher. This subscriber recieves the time from the first publisher and publishes the time to a different node. The last node receives this time.