follow_line_newmanager Setup: seeking community tips

[vinayakgavariya]

hello,

i followed the instructions in user guide and successfully done with the set up of the exercise follow_line_newmanager. although i faced some issues and errors but yeah, finally it's done.
i would like to ask for suggestions from the community on what can be done next and how i can complete the exercise in the most efficient way.

kudos to @jmplaza for helpful links!

[jmplaza]

Glad to see you have successfully launched the FollowLine exercise.

You have user docs and tips for solving that exercise here. That info page describes the available programming interface for that exercise. The API includes the hal.py module (which provides access to robot sensors and actuators, the HAL, Hardware Abstraction Layer), with the methods:

• HAL.getImage() - to get the image
• HAL.setV() - to set the linear speed
• HAL.setW() - to set the angular velocity

It also includes the gui.py module (which provides some visualization methods for debugging such as the GUI.showImage() method).

In fact, each RoboticsAcademy exercise has its own info webpage, available from this URL: https://jderobot.github.io/RoboticsAcademy/exercises/

Cheers!

[vinayakgavariya]

Thanks @jmplaza, I really appreciate it!

I will check-out the links you have shared.

Looking forward to contribute!

[vinayakgavariya]

Hey @jmplaza

I went through the guide maintained by Pankhuri and Sakshay!

It's good and I got bit of clarity too.

But it's the first time I am working on something in Robotics and it's bit overwhelming for me so can you please guide me how can I solve it.

[jmplaza]

I'm sorry @vinayakgavariya . Take it easy, and follow some tutorials about basic OpenCV programming and about basic ROS robot programming. There are many available on internet, just google them.

Cheers!

[vinayakgavariya]

Sure @jmplaza, I will do that.

[BkPankaj]

Hello everyone,
I am facing issues while trying to open the "follow_line_newmanager". It is stuck on the "Connecting" stage and when launching exercises. Could anyone please help me by providing documentation or suggesting a solution? Below are some images for reference.

Connecting and launching error:

Invalid roslaunch XML:

Docker run log:

[BkPankaj]

Greeting everyone,
Does anyone have any idea about this issue? Am I missing something? On my laptop, I only have ROS2 Humble. I'm encountering an issue regarding roslaunch XML and connecting box.

[OscarMrZ]

Hi @BkPankaj. There were some issues with the las ROS 1 backend, it is fixed now in RADI version 3.4.29. ROS 2 backend should also work without problems! Please let me now if you encounter further issues.

[BkPankaj]

Hi @OscarMrZ sir,
Thank you for your response, and I apologize for the delayed reply. I've observed that when I run RADI with the server, I don't encounter any errors. However, whenever I follow the developer documentation, I encounter errors with RADI version 3.4.29.

[jmplaza]

Uhm... that should work.

You are using RADI 3.4.28, which is based on ROS1 Noetic. It is not relevant at all the ROS release you have got installed locally, as the Gazebo simulator and the robotics application are run inside the RADI (Robotics Application Docker Image). Try with RADI 3.4.27 or 3.4.26, which can also be downloaded from DockerHub.

Are you using the RoboticsAcademy from the master branch? try with the RoboticsAcademy 5.1 release.

Anyway that should work, we will take a look at it.

[BkPankaj]

Hello @jmplaza sir, thank you for your reply, and my apologies for the delayed reply. I was caught up with coursework and exams.
Yes, I have ROS2 Humble installed on my local machine. What I've noticed is that when I follow the developer documentation, I encounter errors regardless of the RADI version I try—whether it's 3.4.29 or 3.4.26. I've also attempted both the master branch and the 5.1 release. However, when I follow the exercise page instructions and run the exercise with the RADI server, I don't encounter any errors.

[jmplaza]

Yes, the developer workflow is broken. We are now pretty busy on the upcoming RoboticsAcademy 5.2 release, which has significant changes. Once we publish it we will refine the developer workflow and its documentation. Just wait a little bit. That 5.2 release will be the baseline for the RoboticsAcademy projects in GSoC-2024.

[BkPankaj]

Thank you for the update, sir. I am excited and eagerly awaiting the release of RoboticsAcademy 5.2. Additionally, I would like to inquire if there will be any updates regarding the challenges mentioned in the GForm for this year?

Inside docs written GSOC 2022

Reactjs challenge is not mentioned above

[jmplaza]

Hi @BkPankaj ,

we will not use the same challenges as 2023 nor 2022. We will update them very soon for GSoC-2024. Stay tuned! In addition, this year we will take much into account previous interactions, PRs and issues solved at our software repositories by the contributors in our candidate selection process.

[BkPankaj]

Thank you for the update @jmplaza sir