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2018-06-25 04:42:26 -0500 | asked a question | Piping catkin_make stderr to less while preserving color Piping catkin_make stderr to less while preserving color Hope this isn't too unrelated to ROS, but in an effort to reduc |
2018-06-18 01:16:02 -0500 | edited question | Unable to include headers found in devel/include, generated by grpc Unable to include headers found in devel/include, generated by grpc I have a project (let's call it the protobuf_package |
2018-06-18 00:53:31 -0500 | edited question | Unable to include headers found in devel/include, generated by grpc Unable to include headers found in devel/include, generated by grpc I have a project (let's call it the protobuf_package |
2018-06-18 00:52:21 -0500 | asked a question | Unable to include headers found in devel/include, generated by grpc Unable to include headers found in devel/include, generated by grpc I have a project (let's call it the protobuf_package |
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2018-05-31 04:01:53 -0500 | commented answer | Recommended install for embedded raspberry pi 3 with minimal OS Actually, after simply disabling the X server and splash screen, my boot time is approximately 15 seconds. This is great |
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2018-05-29 00:27:14 -0500 | commented answer | Recommended install for embedded raspberry pi 3 with minimal OS Great answer, thanks! Although a 1 minute boot time might be a bit too much for me, but I'm willing to tolerate it if it |
2018-05-29 00:24:26 -0500 | marked best answer | Recommended install for embedded raspberry pi 3 with minimal OS I have a raspberry pi 3 compute module that I would like to use with a custom built robot prototype. As this will be a headless and embedded install, I have no use for a GUI and many of the services that are bundled with typical Linux distributions like Ubuntu, so I would like to install it on a minimal Linux distribution in order to reduce CPU and memory usage and boot time. However, I would also like it to be flexible and easy without a steep learning curve, in the interest of time, so a full embedded yocto-based solution isn't what I'm looking for, at least for now. I had initially planned to install ROS to go with raspbian lite (a minimal version of raspbian) however I noticed that ROS was mainly designed for Ubuntu, not raspbian or debian. The instructions here recommend that I do not go for Raspbian and instead go for Ubuntu and then follow the armhf instructions. While I am willing to do this, I couldn't find a minimal variant of ubuntu suitable for the raspberry pi. The Raspbian option appeals to me because I am able to find a minimal Raspbian image that I can use with the raspberry pi. I also found Ubunutu Core, but I'm not sure if it's suitable or supported by ROS because of the way it emphasizes using snaps. I'm looking for advice on the easiest and most hassle-free way I can do this. Does it make more sense to continue with minimal raspbian, or should I go with an Ubuntu distribution on Raspberry pi (such as Ubuntu MATE) and install ROS that way? |
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2018-05-28 05:27:02 -0500 | edited question | Recommended install for embedded raspberry pi 3 with minimal OS Recommended install for embedded raspberry pi 3 with minimal OS I have a raspberry pi 3 compute module that I would like |
2018-05-28 05:26:06 -0500 | edited question | Recommended install for embedded raspberry pi 3 with minimal OS Recommended install for embedded raspberry pi 3 with minimal OS I have a raspberry pi 3 compute module that I would like |
2018-05-28 05:25:29 -0500 | edited question | Recommended install for embedded raspberry pi 3 with minimal OS Recommended install for embedded raspberry pi 3 with minimal OS I have a raspberry pi 3 compute module that I would like |
2018-05-28 05:19:12 -0500 | asked a question | Recommended install for embedded raspberry pi 3 with minimal OS Recommended install for embedded raspberry pi 3 with minimal OS I have a raspberry pi 3 compute module that I would like |
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2017-09-12 04:28:38 -0500 | marked best answer | Custom Costmap2D Layer is not updating I've been following this tutorial to understand how I can come up with my own layer for Costmap2D http://wiki.ros.org/costmap_2d/Tutori... I finished doing the first part (i.e. the "Simple Layer" without the grid) and attempted to run it. So I wrote a launch file to start it. With the following yaml file for the Costmap parameters. As you can see, my layer is the only layer I'm loading (and I want it that way). The layer correctly starts and I can see this using a ROS_ERROR() statement I added in the onInitialize() function. I also noticed the reconfigureCB() function getting called. However, that's all I'm getting. The updateCosts() function isn't getting called. I was expecting it to be called, and add a cost to the front of base_link. But whenever I read the costmap data from /costmap_2d_node/costmap/costmap topic, all I get are zeros, which means that it's not working. Is there something else I need to do to get the Costmap to update? Or is there something fundamental about Costmap2D that I didn't understand yet? |
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2017-08-10 00:44:28 -0500 | marked best answer | Undefined symbol in custom costmap layer during runtime caused by tf2 Buffer transform I am writing a custom costmap layer to read data from a radar sensor and turn it into a costmap, and I'm facing some issues running it. I get the following error when it runs: What the related code is trying to do is create a PolygonStamped from the radar data and convert it to world coordinates via tf2. I'm not sure what I'm doing wrong here. The code compiles fine, and it's only when the plugin reaches the above line that it tells me that it's an undefined reference. I tried including tf2_geometry_msgs.h but that didn't do anything. What am I missing? EDIT: Here's my CMakeLists.txt: |
2017-08-10 00:44:28 -0500 | commented answer | Undefined symbol in custom costmap layer during runtime caused by tf2 Buffer transform I think it would make sense for convenience sake. I can imagine a lot of reasons why you'd want to do it. |
2017-08-10 00:43:13 -0500 | marked best answer | Using topic_tools transform to publish more complex types I am attempting to use topic_tools/transform to publish messages that are slightly more complex than what the examples show in the wiki, in order to avoid having to write a node. For example (this might be a bad example), I would like the transform node to subscribe to a TwistStamped message, then create a new TwistStamped message with twist.linear.x equal to the magnitude of the subscribed linear velocity (which only needs a simple math function). I figured out how to have transform publish the Float on its own, and can also figure out how to publish a Vector, but I couldn't figure out how to get it to publish a Twist or a TwistStamped. I keep getting errors, probably due to my incorrect syntax. But I can't find any examples online. I'm also not sure how to put a header into the published message. If transform isn't the right tool to use, is there something else I should be using? Or perhaps it's just better to write my own node after all? |