Install ROS 2 Foxy Fitzroy on a Raspberry Pi 

Unfortunately I'm not sure--the cam is supported in ROS 1 but it looks like the python camera node may have to be ported to ROS 2 and python 3.

@@UbuntuRobotics I see. thanks for the reply. Oh ya, can we install ROS 2 in raspberry pi 3? How about the performance?

Yes, both the 3A and the 3B work fine. Performance is good but I'd suggest installing a server image rather than a desktop image.

@Sid Faber Thank you, I was able to get it working.

We'd like to see that, too :)

I generally use Visual Studio Code installed on my laptop and do remote interactive development over SSH (code.visualstudio.com/docs/remote/ssh). VSCode installs some lightweight components on the RasPi to support remote launch and debugging and such. I use the same setup for developing in local or remote containers, so it's a handy way to keep everything consistent. Thanks for the feedback!

@@UbuntuRobotics oh thank you, I appreciate that tip, I'll take a look for do it

There's a big difference. ROS Melodic is ROS 1, ROS Foxy is ROS 2. Conceptually there are a lot of similarities and much of the supporting software is written to compile for either ROS 1 or ROS 2. However, the innerworkings are very different, and they're not interchangeable without building an explicit bridge. You'll find ROS 1 documentation/tutorials at wiki.ros.org, and ros2 documentation at index.ros.org. answers.ros.org has lots of help for both ROS 1 and ROS 2, but hints for ROS 2 generally don't work for ROS 1 so just make sure you know which version/distribution is being discussed!

Thanks a lot!! Great content:)

First see if you can update your list of available packages. Try the command "sudo apt update". It should be able to reach out and update all the sources without error, and you should see (probably the last entry) a call to "packages.ros.org". If that succeeds, try "sudo apt install ros-foxy-ros-base" again. If the update fails with an error, try adding the key again with the command "sudo apt-key adv --fetch-keys hxxps[:]//raw.githubusercontent dot com/ros/rosdistro/master/ros.asc (replace hxxps with https and the "dot" with an actual dot, trying to avoid the youtube URL smartness"). Then add the repository again which also does an apt update. Let me know if that works, I'm assuming you may have taken a network hit when updating or something.

@@UbuntuRobotics I had a look at the previous video on how to set up the Raspberry Pi 4. One key issue I neglected to recognize is that the system is a 64-bit OS. I was installing the (recommended) 32-bit Ubuntu Server from the Raspberry Pi Imager software. Now that I have the 64-bit version installed, I am now able to install ROS2 Foxy! Thank you for your help!

@@UbuntuRobotics still unable to get past the ros-foxy-ros-base step. It can't find it. I tried a few things as shown here for keys and I see the packages.ros.org during apt update... Thoughts?

@@wegunterjr The same key is used for all the ROS repositories so if you're updating from packages.ros.org you should be good there. Make sure you add the ROS 2 repo, packages.ros.org/ros2/ubuntu, it's different from the one for ROS 1 (although it's OK to add both). If you're still having problems, try using 'apt search' to find the package, make sure it's in the apt index and you've got all the spelling correct.

@@UbuntuOS will do. Thanks. I did verify that I had ubuntu 20.04 installed on the pi. That should be enough right? Just realized it's a pi2 though... does the machine type matter for the repos?