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2019-11-26 21:38:46 -0500 | received badge | ● Famous Question (source) |
2019-07-09 03:19:12 -0500 | commented question | clear_costmap_recovery is not clearing the map Maybe this info is related to your problem https://github.com/ros-planning/navigation/issues/898#event-2468185242 |
2019-05-21 07:51:34 -0500 | received badge | ● Notable Question (source) |
2019-05-13 02:49:10 -0500 | commented question | laser_scan_matcher combined with wheel odometry Not sure if this is relevant, but please check this issue: https://github.com/ccny-ros-pkg/scan_tools/pull/58. |
2019-05-01 01:58:56 -0500 | commented question | Current StaticTransformBroadcaster not update the late-comming rviz So, to solve the issue, I hacked their code so the staticTransformBroadcaster is called within a 5-sec timer callback. |
2019-04-29 10:15:03 -0500 | received badge | ● Popular Question (source) |
2019-04-25 04:15:53 -0500 | asked a question | Current StaticTransformBroadcaster not update the late-comming rviz Current StaticTransformBroadcaster not update the late-comming rviz So I was playing around with the Intel RealSense and |
2019-03-28 04:36:11 -0500 | commented answer | rosserial - Arduino DUE - sync issues Thanks! This helps a lot, glad I've googled the issue with "DUE" keyword. |
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2018-07-23 03:00:25 -0500 | commented answer | Why does AMCL post-date tf (~transform_tolerance)? @Stephan Ahh now that you've mentioned that,it seems more reasonable :p. Frankly I don't know the exact reason, maybe th |
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2018-04-26 22:48:52 -0500 | answered a question | Why does AMCL post-date tf (~transform_tolerance)? According to amcl_node.cpp:1380 the tf stamp is actually based on the time stamp of the laser scan plus transform_tolera |
2018-04-11 20:08:34 -0500 | commented answer | ROS2 clock stuck within inhereted class It worked!!!!!! This is such a stupid error!!! THANK YOU But how interesting I'm getting no error at compile. :/ |
2018-04-11 20:07:08 -0500 | marked best answer | ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the following code. I mimic the coding style of the demo talker node. Am I doing anything wrong? Main: You have my appreciation for any advice! Edit: minimum file: output: |
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2018-04-10 23:14:38 -0500 | commented question | ROS2 clock stuck within inhereted class @William, I've posted a one-file node that's still having this issue, thanks. |
2018-04-10 21:53:42 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 21:52:06 -0500 | commented question | ROS2 clock stuck within inhereted class @William, I've posted a one-file node that's still wrong. |
2018-04-10 21:51:30 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 20:08:16 -0500 | commented question | ROS2 clock stuck within inhereted class Also, because this node need to access some motherboard stuff, I'm running ros2 under root access. I.e. executing after |
2018-04-10 20:07:07 -0500 | commented question | ROS2 clock stuck within inhereted class Hi @William, this->now() acted as same as clk2/clk3, it stucked at something like "CONTACT!!! time: 140735253311824" |
2018-04-10 20:06:38 -0500 | commented question | ROS2 clock stuck within inhereted class Hi @William, this->now() act as same as clk2/clk3, it stuck at something like "CONTACT!!! time: 140735253311824" no m |
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2018-04-10 05:50:55 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 02:42:46 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 02:30:24 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 02:29:44 -0500 | edited question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-04-10 02:26:44 -0500 | asked a question | ROS2 clock stuck within inhereted class ROS2 clock stuck within inhereted class Hello everyone, my clock always stuck at the moment the node start for the follo |
2018-02-01 01:23:19 -0500 | commented question | how to: Building PCL & laser_scan_matcher on Raspberry pi 2 Also, my Raspberry Pi Model B v1.1 gives the info of "ARMv7 Processor rev 5 (v7l)" with command "cat /proc/cpuinfo" and |
2018-02-01 01:06:38 -0500 | commented question | how to: Building PCL & laser_scan_matcher on Raspberry pi 2 Also, my Raspberry Pi Model B v1.1 gives the info of "ARMv7 Processor rev 5 (v7l)" with command "cat /proc/cpuinfo" and |
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2018-02-01 01:02:53 -0500 | commented question | how to: Building PCL & laser_scan_matcher on Raspberry pi 2 FYI, the cmake/pcl_find_sse.cmake has been changed. Now the line you should edit is around line 19. Line 10 is now comme |
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2015-12-02 04:02:01 -0500 | commented answer | Garbled image problem on usb_cam Hi, can you specify the detail of installing the ffmpeg from source? I've tried to do that with this link: http://trac.ffmpeg.org/wiki/Compilati... but didn't come with success. The YUYV format just doesn't work with Full HD cameras (only 2 FPS!). Thanks! |
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2015-03-23 21:44:08 -0500 | answered a question | [SOLVED] Serial Port read returned short error with arduino uno via bluetootle with rosserial It truns out it is the problem of baudrate of my bluetooth module! The chip (named YFRobot HC-05) is a china made cheap one and not is a real HC-06 or any official supported chip. The common procedure of setting baudrate in a console just won't work. Finally There is something like a single post in some unkown chinese forum that provides the datasheet (Luckily I can read simplified Chinese ^^). http://www.yfrobot.com/forum.php?mod=... You have to:
But baud rate higher then 57600 is not usable on my module. Hope it helps someone. |
2015-03-23 21:20:29 -0500 | commented question | [SOLVED] Serial Port read returned short error with arduino uno via bluetootle with rosserial @130s OK, I see. I'm not sure whether if it is okay to do so here at ros answers. Some of the Q&A site forbid self-answering the question. Anyway, thanks. edit: I see the line " you are encourage to answer you own...." when I editing my answer ^_^ |
2015-03-22 21:08:27 -0500 | edited question | [SOLVED] Serial Port read returned short error with arduino uno via bluetootle with rosserial Hi all! I'm working with arduino car under directly ROS topic command. I have a arduino uno board with Arduino Sensor Shield v5.0 installed. I'm running the basic publish and subscribe tutorial from rosserial: When using USB shown as dev/ttyACM0, things are doing well. Then, I'm trying to connect with HC-05 bluetooth module. First I connect it with command:
And the Then launching rosserial as before with additional argument :
With the tutorial code on the car: The terminal become a waterfall of running warning: For most of the time its complaining about expected 72 bytes. And thetopic,
will return result (hello world!) quite randomly (it correctly shows with 1 Hz when using USB) I've done another experiment on subscribe function. Arduino Car subscribe to std_msgs/Empty and topic is published by
The result is similar: some of the command can arrived (by moving the sonar servo) but quite randomly, and sometimes move more then 1 time in 1 second (published in 1Hz). I've tried to read the source but still couldn't locate the problem. Any help or suggestion are very welcome, thanks. edit: It truns out it is the problem of baudrate of my bluetooth module! The chip (YFRobot) is a china made cheap one and not is a real HC-06 or any official supported chip. The common method of setting baudrate in a console just won't work. There is something like a single post in some unkown chinese forum that provides the datasheet (Luckily I can read simplified Chinese ^^). After a weird setup process, it's fine now, except that the module just won't work beyond exceed certain rate (57600 I think). |