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Develop your snaps faster

Snaps bundle their dependencies, which take time to fetch and unpack, and they’re typically made up of multiple parts, each of which need to be built and installed into the snap. Once you finish this process, you need to install the snap and test it out. Once you notice that your code is terrible and doesn’t work the way you thought, you have to make a change and go back through that process again....

October 25, 2018 · 5 min · Kyle

ROS Melodic on Fedora 27

Part of the snapcraft CLI’s development roadmap this cycle includes the ability to build snaps on distros other than Ubuntu. Part of that work includes investigating each plugin to determine if it’s possible to get it working on other distros. As a result, I’ve been looking into the Catkin plugin recently, using Fedora 27 as my proving ground (since that’s the distro with which I’m most familiar after Ubuntu). The first thing you’ll notice trying to get ROS working on Fedora is that, unlike Ubuntu, where Open Robotics maintains infrastructure hosting a repository of Debian packages, there is no repository for you to use: you must build ROS from source....

May 25, 2018 · 2 min · Kyle
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Your first robot: Sharing with others [5/5]

This is the fifth (and final) blog post in this series about creating your first robot with ROS and Ubuntu Core. In the previous post we discussed methods of control, did a little math, and wrote the ROS driver for our robot. But it still required several nodes to be running at once, and sharing it with the world involved uploading your source code somewhere and convincing people to install ROS, build your package, and use it....

March 16, 2018 · 14 min · Kyle
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Your first robot: The driver [4/5]

This is the fourth blog post in this series about creating your first robot with ROS and Ubuntu Core. In the previous post we worked on getting data out of the wireless controller and into ROS in a format meant for controlling differential drive robots like ours: the Twist message. Today we’re going to create a ROS node that takes that Twist message and turns it into the appropriate wheel speeds to drive our robot....

March 9, 2018 · 18 min · Kyle
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Your first robot: The controller [3/5]

This is the third blog post in this series about creating your first robot with ROS and Ubuntu Core. In the previous post you were introduced to the Robot Operating System (ROS), and got your robot moving by ROSifying one of the CamJam worksheets. Today we’re going to move beyond the CamJam worksheets, and work toward having our robot remotely controlled by focusing on our wireless controller: getting data out of it and into ROS messages....

February 10, 2018 · 7 min · Kyle