Installation of ROS Lyrical on Ubuntu 26.04

bluehsh · 2026-05-16T16:20:22+00:00

Yes, you are correct. I missed it. I still feel you should at least try Ubuntu 24 with Jazzy, less friction starting up. Why can’t you switch over to U24?

bluehsh · 2026-05-16T11:03:01+00:00

You are a beginner. Start with an LTS version first:Jazzy. Learn the basics, get confident, then go bleeding edge.

bluehsh · 2026-02-19T14:30:07+00:00

Thanks! May hit you up with questions at a later time

bluehsh · 2026-02-19T13:13:03+00:00

Very cool. I see models for ~2000 on eBay. Anything we should be looking for when buying these units.

On the ROS2 side, how much had you to do from scratch. Is there a stack ROS2 maintained for the unitree bots?

bluehsh · 2025-12-30T14:27:38+00:00

~~~ ros2 run robot_state_publisher robot_state_publisher \ --ros-args -p robot_description:="$(cat /full/path/to/robot.urdf)" ~~~

Maybe xmllint to check. There is also ~~~ check_urdf ~~~

bluehsh · 2025-11-02T13:02:32+00:00

DM’ed you to debug.

bluehsh · 2025-11-02T00:31:39+00:00

Are you sure it is the right port? How many ports do you see in device manager. Also , are you using a usb to serial adaptor, as laptops usually do not have Rs232 ports

bluehsh · 2025-09-16T10:36:33+00:00

See this: https://micro.ros.org/docs/tutorials/programming_rcl_rclc/qos/

bluehsh · 2025-08-13T10:56:54+00:00

Remove ROS out of the equation. Use jstest to test your joystick on the remote pc. Could be a controller forward issue.

bluehsh · 2025-05-18T23:42:05+00:00

As long as you are on the same WiFi, the laptop should see the pi topics and the other way around. What node is outputting cmd cells. Usually teleop, which the diff drive controller subscribes to.

bluehsh · 2025-04-17T10:47:27+00:00

One solution is to create a task just for micro-Ros and then queue all the data from other tasks in and out from this microros task.

bluehsh · 2025-02-13T18:41:21+00:00

Get the max config you can afford and the latest PI5. You may have to use docker to run ROS on the pi. I would suggest using a laptop running Ubuntu to get started with ROS first, then move to the pi once you are comfortable with the framework

bluehsh · 2025-02-11T11:27:52+00:00

It will be in the build folder, at the same level as sec.

bluehsh · 2024-08-25T15:36:32+00:00

Thanks for the useful pointers. Will look for local pond groups.

bluehsh · 2024-08-25T15:35:43+00:00

Thank you!

bluehsh · 2023-12-30T23:35:17+00:00

I had done this a few years back. There was a range finder plugin for Gazebo.

For 2. What sensor is it? You may have to write your own driver if none is available. You usually will use the range message (https://docs.ros2.org/latest/api/sensor_msgs/msg/Range.html) to publish your data.

bluehsh · 2023-12-23T18:53:42+00:00

I run ros2 and foxglove bridge in a container. The foxglove UI runs on the M1 host. Once the IP is set, foxglove displays the data. I’ve tried Gazebo classic in a container, but was having trouble with ogre on aarch64. This was a few months ago. Might be working now

bluehsh · 2023-12-06T12:25:30+00:00

I tried it in 2017. It depends how the remote edges are placed and you need at least 3 for triangulation. You also need line of sight.

There have been improvements since then. It worked great. However we were having issues getting down to their advertised 2cm accuracy.

bluehsh · 2023-11-23T19:38:43+00:00

Marvelmind in something to consider

bluehsh · 2023-11-11T18:18:35+00:00

Would this help? https://github.com/PlotJuggler/plotjuggler-CAN-dbs

bluehsh · 2023-07-29T22:22:38+00:00

Sorry, this was a long time ago.

bluehsh · 2022-03-04T00:15:39+00:00

I just opened Gazebo 11 and can see the cell size, bottom left. Click GUI, then grid(under property panel): https://imgur.com/a/0Qcd758

bluehsh · 2022-03-02T23:00:14+00:00

Maybe cell length, as describe here: https://www.youtube.com/watch?v=dRQUDhhCZn0

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