# ‘move\_bb8\_square.py’ doesn't move a square

**URL:** <https://get-help.theconstruct.ai/t/move-bb8-square-py-doesnt-move-a-square/25978>\
**Category:** Linux Basics For Robotics\
**Created:** [August 26, 2023, 1:05am UTC](https://get-help.theconstruct.ai/t/move-bb8-square-py-doesnt-move-a-square/25978 "2023-08-26T01:05:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![steven.chong](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/s/779978/32.png) [@steven.chong](https://get-help.theconstruct.ai/u/steven.chong)\
**Post date:** [August 26, 2023, 1:05am UTC](https://get-help.theconstruct.ai/t/move-bb8-square-py-doesnt-move-a-square/25978/1 "2023-08-26T01:05:39Z")

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Dear Sir,  
I realized when the program executed with bb8 robot move 4 equal distances, however the angle turn is not 90 degree, hence it is not forming a square. Kindly advise how to recover.

Thanks,  
Steven

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**Author:** ![girishkumar.kannan](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/girishkumar.kannan/32/6994_2.png) [@girishkumar.kannan](https://get-help.theconstruct.ai/u/girishkumar.kannan)\
**Post date:** [August 26, 2023, 3:09pm UTC](https://get-help.theconstruct.ai/t/move-bb8-square-py-doesnt-move-a-square/25978/2 "2023-08-26T15:09:35Z")

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Hi @steven.chong ,

If I remember correctly, the `move_bb8_square.py` is a pre-programmed script. So just make the robot do the square. You should be fine with the quiz/exercise.  
Just provide small square side values. I think large side values make the square go wrong.

Regards,  
Girish

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**Author:** ![system](https://get-help.theconstruct.ai/uploads/default/original/2X/9/9d3ce8305cc0d0d9b6e07d15767a6f245c526f1b.jpeg) [@system](https://get-help.theconstruct.ai/u/system)\
**Post date:** [August 31, 2023, 3:10pm UTC](https://get-help.theconstruct.ai/t/move-bb8-square-py-doesnt-move-a-square/25978/3 "2023-08-31T15:10:13Z")

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