# Wifi Module not responsive Pico4WD Car

**URL:** <https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733>\
**Category:** Learning kit for Raspberry Pi\
**Created:** [February 27, 2025, 1:06am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733 "2025-02-27T01:06:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![lawnmowerproject2025](https://avatars.discourse-cdn.com/v4/letter/l/e9bcb4/32.png) [@lawnmowerproject2025](https://forum.sunfounder.com/u/lawnmowerproject2025)\
**Post date:** [February 27, 2025, 1:06am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733/1 "2025-02-27T01:06:59Z")

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I have pico 4 wd kit, after a lot of troubleshooting I found onboard wifi module is not responding. I ordered ESP-01 module online but could provide instructions on how to bypass onboard wifi module and add this new chip into RDP ?

kit url -  
[https://docs.sunfounder.com/projects/pico-4wd-car/en/latest/](https://docs.sunfounder.com/projects/pico-4wd-car/en/latest/)

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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:** [February 28, 2025, 3:29am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733/2 "2025-02-28T03:29:31Z")

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Which version of the pico-4wd product are you currently using? Suggest providing a picture of the product for us to see.  
Your new ESP-01 module connects to RDP normally, go back and re-upload the code and see how it works.

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**Author:** ![lawnmowerproject2025](https://avatars.discourse-cdn.com/v4/letter/l/e9bcb4/32.png) [@lawnmowerproject2025](https://forum.sunfounder.com/u/lawnmowerproject2025)\
**Post date:** [March 2, 2025, 2:59am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733/3 "2025-03-02T02:59:59Z")

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![IMG_3251](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/7/7de360ede2fddb30a6ae7066cc07f21f01d021ce.jpeg)

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**Author:** ![lawnmowerproject2025](https://avatars.discourse-cdn.com/v4/letter/l/e9bcb4/32.png) [@lawnmowerproject2025](https://forum.sunfounder.com/u/lawnmowerproject2025)\
**Post date:** [March 2, 2025, 3:00am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733/4 "2025-03-02T03:00:55Z")

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![ESP-01 Pinout Diagram](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/7/77f3fa3dd818e9fac5536e4caf9923599a94ca97.jpeg)

This is ESP pinout … how to connect this to RDP and by-pass onboard wifi chip ?

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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:** [March 3, 2025, 9:49am UTC](https://forum.sunfounder.com/t/wifi-module-not-responsive-pico4wd-car/2733/5 "2025-03-03T09:49:13Z")

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You are currently using an older version of the product. The RDP expansion board is equipped with a Wi-Fi module, and if the Wi-Fi module is damaged, you will need to replace the entire RDP expansion board.

We recommend that you provide us with a picture of the RDP expansion board so we can confirm whether it is the older version.