TURTLEBOT3 sensor readings

ROSDS Support
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Hi, I’m doing the project for learn ros2 in 5 days. The project uses turtlebot3 burger.

My issue is previously, I used this simulation and sensor readings were perfect. However, today, you may see in the picture the robot is a bit fat from the front wall, at least he is not in a position to make the turn yet but it detect it as very close and turns.
here is a snippet from the log :[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [wall_following-1]: process started with pid [2981]
[wall_following-1] [INFO] [1703491798.909838437] [wall_following]: Right Ray Distance: 0.9819999933242798
[wall_following-1] front Ray Distance:0.3630000054836273
[wall_following-1] back Ray Distance:1.5140000581741333
[wall_following-1] left Ray Distance:0.33500000834465027
[wall_following-1] [INFO] [1703491799.044884672] [wall_following]: Right Ray Distance: 0.984000027179718
[wall_following-1] front Ray Distance:0.36399999260902405
[wall_following-1] back Ray Distance:1.5140000581741333
[wall_following-1] left Ray Distance:0.33500000834465027
[wall_following-1] [INFO] [1703491799.179642222] [wall_following]: Right Ray Distance: 0.8460000157356262
[wall_following-1] front Ray Distance:0.35499998927116394
[wall_following-1] back Ray Distance:1.5140000581741333
[wall_following-1] left Ray Distance:0.33799999952316284
[wall_following-1] [INFO] [1703491799.316791249] [wall_following]: Right Ray Distance: 0.656000018119812
[wall_following-1] front Ray Distance:0.33500000834465027
[wall_following-1] back Ray Distance:1.465999960899353
[wall_following-1] left Ray Distance:0.35100001096725464
[wall_following-1] [INFO] [1703491799.445045102] [wall_following]: Right Ray Distance: 0.5299999713897705
[wall_following-1] front Ray Distance:0.3199999928474426
[wall_following-1] back Ray Distance:1.406000018119812
[wall_following-1] left Ray Distance:0.37599998712539673
[wall_following-1] [INFO] [1703491799.584978986] [wall_following]: Right Ray Distance: 0.4490000009536743
[wall_following-1] front Ray Distance:0.3109999895095825
[wall_following-1] back Ray Distance:1.3739999532699585
[wall_following-1] left Ray Distance
Regards,
Bushra

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Hi @BushraAlsh ,

Let me give a hint, as someone who has already completed the rosject.

Know about the laser scanner mounted on the robot. Do ros2 topic echo /scan and get at least one complete reading. [You may add --once to the command if you are on ROS2 Humble]. Check the headers to know about the laser scanner properties that is mounted on the real robot and on the simulation robot.

Once you get the information from the headers, you will know why the readings are different.

Regards,
Girish

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They are in RADS!!!
Thanks , I appreciate you teaching me how to debug and figure it out.

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