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I am just starting the LVGL course with the Cheap Yellow Board that you recommended. I am early in the course and I tried to load the first sketch (WIFI SCAN). I compiled and I uploaded and the screen on the board went blank but nothing after that. What would you recommend as next steps?

Q&A Forum › Category: ESP32 › I am just starting the LVGL course with the Cheap Yellow Board that you recommended. I am early in the course and I tried to load the first sketch (WIFI SCAN). I compiled and I uploaded and the screen on the board went blank but nothing after that. What would you recommend as next steps?
0 Vote Up Vote Down
Rod Christen asked 4 months ago

https://imgur.com/a/njhbLZZ
I think this link should show the debug screen in the IDE.  Thanks for you help in advance.

5 Answers
0 Vote Up Vote Down
Sara Santos Staff answered 4 months ago

Hi.
That example is not supposed to display anything on the board’s screen.
It is just an example to test if you can upload code to the board.
Please follow all the steps. It seems you’re missing steps 6 and 7.
 
Let me know if you can get the networks on the serial monitor or if you need further help.
 
Regards,
Sara

0 Vote Up Vote Down
Rod Christen answered 4 months ago

Sara, you are soooooo good.  You are asking me to read before I ask for help.  I hate being so dumb but you are correct the example program did load just fine,  I needed to complete steps 6 and 7 to see the results in the serial monitor.  Kind of a cool little app too.
Final note (for this year), when the Arduino IDE was loading (might have been in preferences), I did get a message that read:
“Some indexes could not be updated. Server responding with: 404 Not Found: https:/raw.githubusercontent.com/espressif/arduino-esp32/ghpages/%20package_esp32_index.json”
Not sure if this will affect things but just in case others get the same message I thought I’d share. 
Thanks again for your help.

0 Vote Up Vote Down
Sara Santos Staff answered 4 months ago

Hi.
It seems there is an extra space on your boards URL.
Go to File > Preferences and in the Additional Boards Manager field, check your URL. There is an extra space before package_esp32_index.json.
Fix the URL and the issue should be solved. Or copy it from here:

https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

 
Regards,
Sara
 

0 Vote Up Vote Down
Rod Christen answered 4 months ago

With the space removed, it works with no error.  Thanks again!!!!

0 Vote Up Vote Down
Sara Santos Staff answered 4 months ago

Great.
I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara

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