# Robomaster TT "WiFi unactive" error

**URL:** <https://community.droneblocks.io/t/robomaster-tt-wifi-unactive-error/1307>\
**Category:** DroneBlocks Support\
**Created:** [April 11, 2024, 2:44pm UTC](https://community.droneblocks.io/t/robomaster-tt-wifi-unactive-error/1307 "2024-04-11T14:44:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jin](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@jin](https://community.droneblocks.io/u/jin)\
**Post date:** [April 11, 2024, 2:44pm UTC](https://community.droneblocks.io/t/robomaster-tt-wifi-unactive-error/1307/1 "2024-04-11T14:44:35Z")

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I uploaded the Arduino sketch file according to the tutorial at the link because a WiFi error occurred on my drone.

> **[TROUBLESHOOTING: WiFi Unactive Error Message!](https://learn.droneblocks.io/courses/1722115/lectures/39819609)**
>
> Learn about Arduino Sketches and ESP32 Hardware

After uploading, the WiFi error was resolved, but the LED on the board is not working. How can I solve this problem?

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**Author:** ![ryan](https://avatars.discourse-cdn.com/v4/letter/r/a8b319/32.png) [@ryan](https://community.droneblocks.io/u/ryan)\
**Post date:** [June 25, 2024, 8:32pm UTC](https://community.droneblocks.io/t/robomaster-tt-wifi-unactive-error/1307/2 "2024-06-25T20:32:23Z")

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> [@jin](#):
>
> After uploading, the WiFi error was resolved, but the LED on the board is not working. How can I solve this problem?

Hi Jin,

Are you seeing any error codes or lights on the expansion board? I would recommend reflashing the sketch.

Thanks,  
Ryan