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Questions tagged [yaw]

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GPS robot heading: calibrated magnetometer causes erratic results

I am currently trying to navigate using an RTK GPS. Unfortunately, despite calibration, my magnetometer's heading estimate seems to be slightly off at certain angles. While moving at these angles, ...
Shmuel Silver's user avatar
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1 answer
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Simple takeoff then do yaw rotation

Arming and takeoff work fine but i don't know how to do yaw rotation: ...
ground11's user avatar
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1 answer
125 views

Adjust bearing knowing initial and last coordinate in dead reckoning

I am working with IMU data (accelerometer, magnetometer and gyroscope) in order to estimate the path done by the object that contained the IMU. I am using dead reckoning for this. I am trying to ...
rrwork__'s user avatar
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1 answer
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how does autoware's yaw change?

when head to north,yaw=0? And then the car turn to east,yaw increases to 359.99999 when touch north again? Originally posted by fantasyplus on ROS Answers with karma: 17 on 2020-08-14 Post score: 0 ...
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2 answers
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Rotate quaternion by body yaw

How to change a quaternion's body-fixed yaw? Using Matrix3x3's getRPY and then setRPY doesn'...
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1 answer
55 views

Angle between two orientations

There are two orientations given, as intrinsic yaw-roll-pitch (rzyx). How to calculate the angle between the "Z" axes of them? Converting the orientations to quaternions or to anything else ...
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1 answer
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How to get a ground truth yaw angle or odometry from Gazebo?

I need to do georeferencing with point clouds on Gazebo so I use navsat_transform_node to convert gps to odom information as odometry/gps and I use ekf localization with "odometry/gps" and &...
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1 answer
38 views

Get robot position und orientation (in degree) from TF

Hi, I want to get the Position (x, y) and the orientation from my robot. The position should be relative to the map TF. Therefore I used a TransformListener: ...
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1 answer
28 views

how to get yaw from quaternion values?

Hello everyone, I am new to ROS and this community. I am working with pioneer 3dx robot. My aim is to drive it in a square shape path and return back to its initial position. I am able to get ...
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1 answer
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difference between yaw and orientation of a vehicle

What is the difference between yaw and orientation of a car. I know the difference between the orientation and the steering angle of a car. How is yaw related to both of them ? Also is yaw rate same ...
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1 answer
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Robot Monitor gives an error, how to set imu0_pose_covariance?

Hi, Robot Monitor says: imu0_pose_covariance: The covariance at position (35), which corresponds to YAW variance, was zero. This will be replaced with a small value to maintain filter stability, but ...
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1 answer
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robot_localization delayed yaw response

Our robot has wheel odometry and an IMU (gyro plus accelerometers) and we are migrating from robot_pose_ekf to robot_localization. We expect to add additional IMUs as well as gps once this base ...
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1 answer
80 views

How to control pitch, roll, yaw with mavros

Hello, i am quiet new to the pixhawk, but quite familiar with ROS. I am searching for some informations how to control the pixhawk via mavros. I am using the px4 firmware. My plan is to use the ...
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3 answers
37 views

How do I reset the /odom topic back to 0 without restarting the robot?

I am using this callback function because I want to tell the robot to move a specified angle. I was wondering if there is a way to restart the /odom topic back to 0 for simplicity purposes. Your help ...
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1 answer
10 views

How should RPY converted from an IMU look like?

What angles should be there? 0°-360° ? -180° - 0° - 180° ? Or something else? I am for example using this code and I am getting weired results... ...
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1 answer
79 views

IMU ros orientation

Hello everyone, This is a 2 part question: I am building a differential drive robot. Which uses encoders and imu to get the orientation of the robot. The imu is an MPU9150 with TM4c1294xl ...
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1 answer
7 views

How to correct the "yaw" behavior of a quadrotor when crossing the angles' limits?

Hi guys, My quadrotor has a strange behavior (video) when it turns around 180° (the returned value of atan2()). After investigating for hours I 'm pretty sure I found what the problem. Referring to ...
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1 answer
8 views

transform broadcaster orientation problem

Hello, I am using a turtlebot 2 with ros-groovy. I have successfully wrote a publisher that takes the base_link and broadcasts that info. I am working on writing a broadcaster for the base_footprint. ...
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2 answers
25 views

retrieve turtlebot orientation

hi everybody, kindly help me out to retrieve exact turtlebot's orientation. i have used yaw to determine the orientation but when the robot move the yaw become inaccurate. the yaw command the i used ...
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1 answer
13 views

How to change the yaw angle in ROS

Hi guys, I have been working on the ar.drone flying robot and what I want is to have the ar.drone takeoff, change the yaw angle by 90 degrees while holding that hover position and then land. I tried ...
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2 answers
87 views

Question regarding Roll Pitch Yaw and coordinate system

Hi all ! I have a question regarding the Roll Pitch Yaw convention in ROS (applying to all the the getRPY and quaternion convertion function). I am aware that the convention in ROS is the fixed XYZ ...
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1 answer
5 views

How to interpate the IMU raw data?

Hello I wont to check my IMU raw data. So I wont to find out the range of the orientation yaw and the pitch angle. So when I look at the IMU data I have like these: ...
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1 answer
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Problem in setting goal and monitoring (and controlling) movements using odometry

Hi all, I am trying to provide a goal to turtlebot (roomba base) in rectangular coordinates using /odom as the reference frame. I am trying to control and monitor the movements. The objective is to ...
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1 answer
6 views

Converting yaw between frames

Hi all, I have a query regarding converting yaw between frames. The velocity commands (linear and angular) received from the base local planner are in term of robot's frame. Let says that I want to ...
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0 votes
1 answer
3 views

Yaw problem in my wall following algorithm

Hi, I'm trying to create a wall following algorithm, but I'm having some problem. Essentially my code use laser to extract a line and calculate the slope (locally to the robot, so from 0 to 2*pi) but ...
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