90° blank angle with default settings.

[Haskar]

Hi, I have a new YDLIDAR X4 and when I tried to scan the room I get a ~90° blank space. I turned the LIDAR around to make sure that it's not due to some reflection or something.

Does anyone know that I did wrong?

ydlidar_ros_driver/launch/lidar_view.launch:

ydlidar_ros_driver/launch/lidar.launch:

Rviz:

When I use the ydlidar_ros package it works perfectly.

ydlidar_ros/launch/lidar_view.launch

ydlidar_ros/launch/lidar.launch

Rviz:

the straight line on the left is a closet. It is visible with ydlidar_ros but not with ydlidar_ros_driver

[surdubob]

Hello!
I have the same problem. Can anyone from the development team reply pls?

[KMiyawaki]

Hi,
Try to change the frequency parameter from 10.0 to 8.0.
https://github.com/YDLIDAR/ydlidar_ros_driver/blob/master/launch/X4.launch#L34

[artur84]

Changing the frequency to 8.0 helped a lot but there was still a small (blank) region. I had to use 7.0 instead and it now works correctly for me.

Hi, Try to change the frequency parameter from 10.0 to 8.0. https://github.com/YDLIDAR/ydlidar_ros_driver/blob/master/launch/X4.launch#L34

[jeonsion]

Hi,
I had the same issue and solved it by using the ydlidar_ros package instead of ydlidar_ros_driver. Here is the link to the package I used

https://github.com/balanceTWK/ydlidar_ros