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Blog posts tagged
"ROS2"

Rhys Davies
3 October 2019

ROSCon Japan 2019!

Robotics Article

ROSCon Japan 2019 was a resounding success. We took in the keynote speech from Ryan Gariepy, Co-founder and CTO of Clearpath Robotics. We demoed the first iteration of a Robotics arm from Niryo. Our own Ted Kern gave a lightning talk on type-checked Python in ROS 2, and we spoke to lots of individuals in ...

Jeremie Deray
5 September 2019

The teleop_tools arrive in ROS 2 Dashing!

Robotics Article

After exploring some ROS 2 subtleties and implementing some CLI tools we felt were missing, the time has come to get our hands even more dirty. What better way to learn than by doing? C’est en forgeant qu’on devient forgeron Humm, pardon my french, Practice makes perfect To enter the realm of ROS 2 and ...

dragan-s
30 August 2019

Building a better TurtleBot3

Robotics Article

TurtleBot3 was released in 2017 and is positioned as a low-cost, open-source robot kit. For new owners of the TurtleBot3, there are various resources online that will assist you with building your brand new TurtleBot3 out of the box. One such example is the official TurtleBot3 instructional video. While it is a great video to ...

Kyle Fazzari
28 August 2019

Canonical joins the ROS 2 Technical Steering Committee

Internet of Things Article

We at Canonical care deeply about robotics. We firmly believe that robots based on Linux are cheaper to develop, more flexible, more secure, and faster to market. One of the contributing factors to this being the case is the Robot Operating System (ROS). ROS is by far the most popular middleware for creating Linux-powered robots. ...

Jeremie Deray
27 August 2019

Components vs. Plugins in ROS 2

Robotics Article

After our series of post about ROS 2 CLI tools (1, 2), we continue exploring the ROS 2 realm taking a look at ROS 2 components and more specifically, how they compare to plugins. spoiler alert: Long story short, components are plugins. Short story long? Is that a thing? Well plugins and components are indeed ...

Ted Kern
21 August 2019

How to add a linter to ROS 2

Internet of Things Article

A well configured linter can catch common errors before code is even run or compiled. ROS 2 makes it easy to add linters of your choice and make them part of your package’s testing pipeline. We’ll step through the process, from start to finish, of adding a linter to ament so it can be used ...

Ted Kern
15 August 2019

Linting ROS 2 Packages with mypy

Internet of Things Article

One of the most common complaints from developers moving into large Python codebases is the difficulty in figuring out type information, and the ease by which type mismatch errors can appear at runtime. Python 3.5 added support for a type annotation system, described in PEP 484. Python 3.6+ expands this with individual variable annotation ...

Jeremie Deray
7 August 2019

Creating a ROS 2 CLI command and verb

Robotics Article

Following our previous post on ROS 2 CLI (Command Line Interface), we will see here how one can extend the set of existing CLI tools by introducing a new command and its related verb(s). As support for this tutorial, we will create a ‘Hello World’ example so that the new command will be hello and ...

Jeremie Deray
21 June 2019

ROS 2 Command Line Interface

Robotics Article

Disclosure: read the post until the end, a surprise awaits you! Moving from ROS 1 to ROS 2 can be a little overwhelming.It is a lot of (new) concepts, tools and a large codebase to get familiar with. And just like many of you, I am getting started with ROS 2. One of the central ...

Martin Wimpress
22 March 2019

Snapcraft Summit Montreal

Cloud and server Article

Following previous events in New York, Seattle, and London, the fourth Snapcraft Summit is taking place in Montreal, Canada from June 11th to 13th 2019. We have partnered with Travis CI this time and also expanded the scope of the event to three tracks. Snapcraft Summit Snapcraft is the universal app store for Linux that ...

Kyle Fazzari
11 March 2019

ROS 2 launch: required nodes

Cloud and server Article

When using the Robot Operating System (ROS), it’s fairly common to want to shut down a launched system if a specific node (or set of nodes) exits. This is pretty easy in ROS1, because launch files support the required attribute on each node. As a result, crafting a two-node system where one of the nodes ...

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