Controller 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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