# Cannot connect sunfounder controller to picarx

**URL:** <https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361>\
**Category:** General\
**Created:** [January 11, 2025, 4:24am UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361 "2025-01-11T04:24:06Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![kbradley](https://avatars.discourse-cdn.com/v4/letter/k/e79b87/32.png) [@kbradley](https://forum.sunfounder.com/u/kbradley)\
**Post date:** [January 11, 2025, 4:24am UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361/1 "2025-01-11T04:24:06Z")

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I assembled the PICAR-X and it works when connected to my PC  
When the Picar is first connected to my PC, I get  
“You are now connected to “SHAW2557” IP 10.0.0.110”  
I then disconnect the Picar from my PC.  
However, when I try to connect the app Sunfounder Controller to the Picar, I get “Connection failed”.  
On the controller, I press “SCAN”, no results.  
I press “Manual”, and enter the device IP, and press “Connect”, I get “Connection failed”

What am I doing wrong, and what am I missing?

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**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [January 13, 2025, 11:24am UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361/2 "2025-01-13T11:24:57Z")

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Please follow the steps in the tutorial link:  
[https://docs.sunfounder.com/projects/picar-x-v20/en/latest/python/control\_by\_app.html](https://docs.sunfounder.com/projects/picar-x-v20/en/latest/python/control_by_app.html)  
Note: The WiFi that your mobile cellular device and picar-x are connected to should be in the same LAN for the connection to work properly.  
If there is no automatic search, you can also manually enter the IP to connect.  
If possible, we suggest you provide us with a video of the operation process, so that we can help you analyze and solve the problem.

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**Author:** ![harish](https://avatars.discourse-cdn.com/v4/letter/h/47e85d/32.png) [@harish](https://forum.sunfounder.com/u/harish)\
**Post date:** [May 25, 2025, 7:02pm UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361/3 "2025-05-25T19:02:39Z")

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I installed all the modules and trying to run the app controller but getting this error.

Could you please advise?

from sunfounder\_controller import SunFounderController  
ModuleNotFoundError: No module named ‘sunfounder\_controller’

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**Author:** ![Spf650](https://avatars.discourse-cdn.com/v4/letter/s/f05b48/32.png) [@Spf650](https://forum.sunfounder.com/u/Spf650)\
**Post date:** [May 25, 2025, 8:14pm UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361/7 "2025-05-25T20:14:30Z")

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Did you do this bit?  
cd ~  
`git clone https://github.com/sunfounder/sunfounder-controller.git`  
cd ~/sunfounder-controller  
sudo python3 setup.py install

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<div class="post-metadata">

**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [May 26, 2025, 2:25am UTC](https://forum.sunfounder.com/t/cannot-connect-sunfounder-controller-to-picarx/2361/8 "2025-05-26T02:25:52Z")

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Spf650 is correct.  
Please follow the tutorial steps:

> **[13. Controlled by the APP — SunFounder PiCar-X Kit documentation](https://docs.sunfounder.com/projects/picar-x-v20/en/latest/python/control_by_app.html)**