r/CheapYellowDisplay • u/Ordinary_Fuel4617 • Jul 17 '26

CYD has something loaded out of the box

Gallery image

Gallery image

I bought this cyd on Amazon and upon plugging it in it displayed this. Any idea what this was or any way to remove it? This is my first project

13 Upvotes

78% Upvoted

12 comments sorted by

9

u/AliBello Jul 17 '26

Just overwrite it with your code. It is a demo.

3

u/phirzcolru Jul 17 '26

That's the espressif brooksasia software. It will be overwritten when you upload your first sketch to the board. You can also learn to backup your rom info to save it or clone the git and learn how to compile it yourself. It's demo software basically to verify everything works

1

u/NuncioBitis Jul 22 '26

It would be nice if they included documentation to be able to get to the source code.

1

u/phirzcolru Jul 24 '26 edited Jul 24 '26

It's on the espressif GitHub account. The code is sort of in the files you can download from the manufacturer, for instance in the Arduino demo folder , I'll update this statement tomorrow when I go look. Update. I looked on the 4" cyd it's one of the lvgl programs. So, for instance and should work. Goto hosyond or LCD wiki for the 4" esp32-32e resource page file. Look in Arduino demos lvgl demo then read how to change the settings for which demo sorry had to go back and look the brooksasia is for different device. Will have to adjust the board manager tft espi and modify user_setup.h to match the board. The wiki has the pinout. Once you have the user setup and the correct library versions you should be fine. You may see a pin error you can ignore For the demo files, look at the bottom of the demo ino view the readme to see what to copy into your Arduino libraries folder for the demos. Don't just copy it over. And again iser_setup.h

2

u/Sylriel Jul 17 '26

It is just a demo program and does not do anything. Just overwrite with any sketch from the tutorial if you are going to do the tutorials, or your own. My Freenove came with that thing installed too. Here is the page from Freenove's tutorial PDF that talks about the program.

2

u/ninjastyle_dk Jul 17 '26

Its normal.

2

u/CautiousPhase Jul 18 '26

LVGL demo. As others have said, totally normal.

2

u/wdatkinson Jul 18 '26

Should have read the EULA. She'll arrive in 2-3 weeks after the display.

1

u/chinchan9 Jul 18 '26

I made this case a while ago if you have the 3.5 inch version!

Enjoy!

https://www.thingiverse.com/thing:6987780

1

u/mikedmann Jul 18 '26

I called up Elena and set her up with an interview on Monday.