T-Display S3

Fabryz

Hello,
What I want to achieve: I want the device to work while powered via an USB power bank
What happens: when I connect the device to the powerbank nothing happens. Only if I connect it to the computer, with the Arduino IDE opened, and only when I open the serial monitor, then the code will start running

Can anyone help me on this?

1- Can the device be freely powered via an USB power bank? I don't have a lipo battery, and I wouldn't like to solder anything
2- How do I make the code run when not connected to a computer?

I have successfully verified, compiled and uploaded my code to the device, I have booted the device as specified on point 2 on the "Tips" section of the README https://github.com/Xinyuan-LilyGO/T-Display-S3.

teastain

OK, I had all these problems as have others! I made a GitHub repo with a link to the original LilyGO GitHub...and...Made a setup text for this particular Board.
This board is VERY fussy about how you program and connect it.
Check out my repo:
https://github.com/teastainGit/LilyGO-T-display-S3-setup-and-examples

The short read is that the program must turn on GPIO15 in setup, which my two examples do, of course. This is needed for LCD backlight AND serial output.
The Board you select and ALL the recommended settings in the upload options must be as per LilyGO and my repo.
Get my simple example de-bugged and running and go from there!
-Terry

teastain

@fabryz OK, I gave it more thought and your problem may be that you have a program construct like "while true Serial.print(somevariable)" that needs to serial print and receive a confirmation.

Please post your program for further assistance.
-Terry