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ROBOTIS-GIT / turtlebot3

ROS packages for Turtlebot3
http://turtlebot3.robotis.com
Apache License 2.0
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Laser scan data incomplete #918

Open rajalnagwekar opened 2 years ago

rajalnagwekar commented 2 years ago

ISSUE TEMPLATE ver. 0.4.0

  1. Which TurtleBot3 platform do you use?

    • [x] Burger
    • [ ] Waffle
    • [ ] Waffle Pi

  2. Which ROS is working with TurtleBot3?

    • [ ] ROS 1 Kinetic Kame
    • [ ] ROS 1 Melodic Morenia
    • [x] ROS 1 Noetic Ninjemys
    • [ ] ROS 2 Dashing Diademata
    • [ ] ROS 2 Eloquent Elusor
    • [ ] ROS 2 Foxy Fitzroy
    • [ ] etc (Please specify your ROS Version here)

  3. Which SBC(Single Board Computer) is working on TurtleBot3?

    • [ ] Intel Joule 570x
    • [ ] Raspberry Pi 3B+
    • [x] Raspberry Pi 4
    • [ ] etc (Please specify your SBC here)

  4. Which OS you installed on SBC?

    • [x] Raspbian distributed by ROBOTIS
    • [ ] Ubuntu MATE (16.04/18.04/20.04)
    • [ ] Ubuntu preinstalled server (18.04/20.04)
    • [ ] etc (Please specify your OS here)

  5. Which OS you installed on Remote PC?

    • [ ] Ubuntu 16.04 LTS (Xenial Xerus)
    • [ ] Ubuntu 18.04 LTS (Bionic Beaver)
    • [x] Ubuntu 20.04 LTS (Focal Fossa)
    • [ ] Windows 10
    • [ ] MAC OS X (Specify version)
    • [ ] etc (Please specify your OS here)

  6. Specify the software and firmware version(Can be found from Bringup messages)

    • Software version: [x.x.x]
    • Firmware version: [x.x.x]

  7. Specify the commands or instructions to reproduce the issue.

    • HERE

  8. Copy and Paste the error messages on terminal.

    • HERE

  9. Please describe the issue in detail.

    I’m using the LiDAR scan data for obstacle avoidance using reinforcement learning. The range of the LiDAR scan is not complete from 0 to 359 degrees. Sometimes the len(msgScan.ranges) = 229 or 230or 232 but never 360 and also why does it fluctuate? How can this be dealt with ?

GyuH13 commented 1 week ago

Hi @rajalnagwekar I predict that you are using LDS-02. Refer below reply, it will help you to understand that situation. https://github.com/ROBOTIS-GIT/turtlebot3/issues/952#issuecomment-2467139688