Building a ros2_control System | ROS2 Control with the JetBot Part 2

[@HugoOrtizKataoka]

After 3 online courses on ROS2, loads of documentation reading and many hours of youtube sourcing and chatgpt prompting, your 20 minute video just cleared all my doubts on ros2_control and how to plan a project for a diffDrive system. I can only give you one like but I am trully appreciated for how simply you explaned it and how easy it was to understand.

[@mikelikesrobots]

I'm so happy to hear that! It's exactly what I was hoping for when I made the video, as I'd been through the same amount of reading through documentation online and struggling to understand. Let me know if you have any suggestions for follow-up videos!

[@devyosef3410]

can we set up ros humble into our machine just by dev container on vscode (macOs)

[@mikelikesrobots]

Definitely! In fact, if you take a look at this video, it has a thorough guide with explanation of how to set up an environment like that: kzbin.info/www/bejne/pqDdcmV8mJ6eoJY

[@devyosef3410]

@ thank you so much

[@bankuz_4690]

Can you give a brief description on how to control a 6 dof manipulator arm using ros2

[@mikelikesrobots]

In brief: MoveIt. Take the UR5 arm, which is the one I've used most: github.com/UniversalRobots/Universal_Robots_ROS2_Driver?tab=readme-ov-file#moveit-support You can set it up to work with ROS2 and MoveIt to enable path planning. There's a demo video there as well. Let me know if there's more detail you want - this could potentially become a future video!

[@bankuz_4690]

@@mikelikesrobots Could be very helpful if you could make a video tutorial for beginners like me

[@usamahamayun5522]

I did run your repo . its works as expected however the jetbot moves In circle when gives forward motion using teleop_twist the backward motion is okay moves in a straight line

[@mikelikesrobots]

That's very odd. If you put the robot on a podium so its wheels can free-spin, do both wheels move in the forward direction? I would suspect that one motor isn't working if not for your backwards working properly.

[@usamahamayun5522]

@@mikelikesrobots strangely i test run the jetbot notebook it works smootly both forward and backward motion. i did tested on podium . as well , the next thing i tried publishing simple TwistStamped linear x = 0.5 and strangely the motor was moving faster than. i was suspecting it could be something related to controller designed maybe

[@a314]

JetBot have discontinued Jetson Nano Developer Kit in Dec 2023. The recommended kit is building out the assembly yourself with Jetson Orin Nano 8GB Dev Kit.

[@mikelikesrobots]

I had no idea! Thank you for pointing it out - hopefully I can get hold of the latest dev kit and do an update video.

[@a314]

@@mikelikesrobots great. Orin dev kit is a bit more pricier. I'm not sure if it's beneficial compared to TurtleBot3 Burger. May be you can do a comparison video on that 😉

[@mikelikesrobots]

You're right! A Turtlebot setup video and a comparison video would be great. Thanks for the suggestion!

[@ErkanUnal.]

Have you worked with a bldc motor with hall sensor?

[@mikelikesrobots]

I haven't - not at that level. I would like to continue this series with including a sensor for correct feedback, which may be a Hall sensor, but it's more likely to be a shaft encoder.

[@ujwalcn3550]

can u help me with the setup problem the oled display get's off during the jet bot setup when connected to ethernet cabel

[@mikelikesrobots]

I've had the issue with my OLED turning off too. You might find reflashing the SD helps, but I did find out that I could SSH to the robot even with the OLED off, as long as I knew the IP address. My advice is to note down the IP address when the robot starts up and connect using that; if it never shows an IP address, try reflashing the SD card. Good luck!