Robot navigation using CAD dawing maps
I want to provide a map drawn in CAD software for robot navigation instead of laser scans, is there any package or stack to take the CAD drawn maps for navigation. How to accomplish this task?
View ArticleCalculating path using linear and angular velocity published by odometry
I have the message type `nav_msgs/Odometry` constantly publishing linear and angular velocity. I am calculating linear distance by taking Velocity at X and Y, multiply them by `1/rate(Hz)` and summing...
View Articleodometry message from Arduino
Hello, I am trying to create and publish odometry data for a differential drive robot from an Arduino Due board with the data coming from wheel encoders and a gyro sensor attached to the board. my...
View ArticleIssue while creating a Map using gmapping?
Hello I am in confusion, what really the issue is in? Please any one can solved it, we urgently needed to solve it. In my mobile base Robot , we are now at the stage of creating a map using gmapping,...
View ArticleTF of URDF is not showing from robot state publisher
I am using raspberry pi and trying to publish TF of URDF file. I created a URDF of a differential drive robot and wrote the launch file including joint state publisher & robot state publisher to...
View ArticleCalibrating Pioneer P3DX robot for ROSARIA
Hi All, I am now setting up a new Pioneer 3DX with kinect and URG laser sensor. I have so far managed to put all the sensors and connect them via rosaria. I would now like to do odometry calibration of...
View ArticleSTM32 Microcontroller for communication with ROS
I currently intend to deploy an STM32 (Stm32f103c8t6) as the microcontroller to publish the Odom message and message from other sensors also. My questions are as follows: 1. Is there any support...
View ArticleAdding odometry to my Custom Robot
So I have the follow code that allows my Robot to move via Teleop. I now need to Publish odometry values. Does anyone have any good ideas on how to do it? import roslib import rospy from BrickPi import...
View ArticleUse navigation to correct robot's path
Till now I was using Gazebo to simulation. Now I am trying to implement that on a real robot. I have been successful in doing so but there is one problem in following the path. When the path is...
View ArticleLaser scan data not aligned with map data and real world (Navigation Stack)
 Good Morning, I am facing a problem recently with navigation. Once navigating, the laser scan inflation is not aligned with the walls included in the...
View Articlefind 3D location of the sensor when a depth image arrives
Hey buddies! I went through the forum and couldn't find a satisfying answer. Sorry, if I reopened an already-answered question. Basically, I need to write a ROS node that will print the 3D location of...
View ArticleOdometer_Arduino
Hi, OKAY, I hate to admit it but I am a total NOOB. But I really work hard to learn this stuff. So, yeah... I have made an odometer using Arduino and a couple of IR LEDs. Below is the sketch: int...
View ArticleStereo camera, preprocessing, transforms and frames = pointcloud?
Hello, I am trying to avoid the simple questions, so trust me; I've really tried to figure out this for myself. But I find this to be am beyond my understanding. **Situation** - I am acquiring...
View ArticleRuntime Odometry Correction
Hello We are stuck at a point, unable to solved it. Please suggest, how can I do it !. We am working on small Module, firstly we drive the robot at curtain distance e.g say 7 m and store the drive...
View ArticlePose Covariance for swiftnav_ros rtk message
Hello all, I am using Piski Multi RTK gps system for centimeter accurate pose information. Below is a snapshot of a Nav_msgs::Odometry message, as published by the swiftnav_ros package, after taking my...
View ArticleSabertooth odometry feed back with kangaroo x2
Apologies , this is not a ROS related question . I wanted to know if Kangaroo X2 can give us feedback for odometry . I know kangaroo can do PID control using the encoders(as much as I understand it's...
View ArticleGround truth to show robot movement in Rviz
Hello all, I'm trying to figure out what is need and the information path so that information the robot shown in Rviz moves relative to a fixed frame. (as opposed to the robot standing still and the...
View ArticleHelp needed with TF issues .
Hey , i am working on a 4 wheel drive differential robot , ***I am using Rosserial to talk to the arduino (cmd_vel) and arduino publishes back (tf , in which the odom is there).*** Timed out waiting...
View Articlewhat is the best way to connect ackermann steering with rviz?
Hello, I am building my own car-like robot. For the driving motor controller, I am using the SDC2130 from Roboteq. I have found this package on github called...
View ArticleIntegrating Autonomous Navigation with SLAM
I'm a beginner in ROS and I'm trying to develop a robot that can autonomously navigate with the help of 3D Lidar data and IMU data. Using individual motor speeds as feedback for the navigation isn't an...
View ArticleController for robots
Hi, i found two ways to setup a controller to drive around with my mobile platform robot and am a bit confused. First I found the way to create a new xacro file and will it with a gazebo-tag and...
View Articlehow I convert string to float?
I'm using arduino to send values from 0.00 to 5.00 and I'm trying to read them but I get this error raise ROSSerializationException(str(e)) rospy.exceptions.ROSSerializationException: : 'required...
View ArticleCan I use motors without encoders (open loop) for base of robot?
I have read that i need to publish odometry data so that the robot knows its current position. I have encoders built into the motor so I know that the steps i am sending will be accurate. Is there a...
View ArticleRobot Localization with Odometry and UM7
Hello all, I am trying to get localization to work for a custom car like robot. I am able to publish odom from wheel encoders and imu/data from my UM7 imu sensor. I would like to fuse together these...
View Articlerobot doesn t start moving
I have setup navigation stack on my robot with all the nodes up and running (move_base, amcl , costmap2d etc.). I am also able to move my robot using teleoperation (keyboard control) and see its...
View ArticleHow to fuse encoder ticks + IMU for odometry?
Hi, I have an IMU which shows the orientation perfectly and also installed some optical encoders. When I move the robot straight, the encoders will show the movement more or less correctly. However,...
View ArticleOdometry for a wheelchair
Hi there, I'm planning to use the navigation stack package. I currently have the lidar attached to my base, a electric wheelchair. However, odometry seems to be required for the navigation package. I...
View ArticleHow to combine LIDAR and IMU with Hector mapping.
Hi, I am a beginner to ROS trying to fuse the IMU for odometry along with a hokuyo LIDAR and hector mapping to create an accurate map. Currently the map works in rviz but the frames do not move...
View Articlefake encoder ticks from laser scanner?
Hi, this is my first post here I have a 4WD differential robot with encoders, but after testing i think the encoders dont work (except 1) So i thought go away with encoders altogether and use a 2D...
View ArticleImprove map created by Gmapping
Hi All, I implemented Gmapping algorithm for a featureless tunnel/pipe environment. Since LiDar/camera are not that effective in these environments, stable odometry is the prime data that can be used...
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