ESP32S3 T-EMBED

mphucul

Received my T-EMBED today. Only the LED example worked from the factory loaded examples. Loaded the TEmbedGuages.ino example from VOLOS Projects YouTube page and all I get is a black screen and three LED lit along the bottom of the rotary switch. Any ideas on the problem or should I return for a refund?

Uhclem

@mphucul I'm having a similar problem. I got several units. One; all the demo function "work" including the Configuration; Deep Sleep button. Another, only the LED function, the others don't render anything on the screen, and the Configuration is missing.

I see a blue LED blinking next to the Groove connector. What does this indicate?

teastain2

Hi guys, some common experiences with a new LilyGO ESP32 S3:
You cannot damage the bootloader with your uploaded firmware (sketch), it is hard coded in ROM.
You must download the GitHub repository:
https://github.com/Xinyuan-LilyGO/T-Embed
and copy the entire contents of the lib directory to your libraries directory and be sure to overwrite the files in your libraries folder. This is the most common reason for no display.
-Terry
P.S the blue light means the battery charger circuit is powered

Uhclem

@teastain2 Thanks for the info. So far I have not setup the dev environment yet, I'm just working with the OOB units, adding a battery, memory chip, and case. I will continue to setup the remaining 4 units I have and see if a recognizable factor emerges.

Are the behaviors of the bootloader described somewhere?
Is it possible to configure your local wifi into the configuration?
Thanks,

teastain2

@uhclem Hi!
What are OOBs?

What do you mean by "configuration"?

Do you program with Arduino IDE ?

The bootloader is the permanently resident code that helps you load your programs into your board.

It works with WiFi like all other ESP32's!!!

I do not have a T-EMBED to test, but I will help where I can.

Uhclem

@teastain2 OOB Out-Of-the-Box.
When you reset this unit, you get two on screen buttons: "Self Test", and "Into UI".
The Self Test does a wifi scan, lists all the APs it sees and then outputs: connecting to xinyuandianzi sprays lots of dots on the screen as it goes. On the battery device, this waits forever. On the USB-C powered device I get
Connection timed out, start smartconfig wait for smartconfig ... Please use EspTouch Apps to connect to distribution network.

Picking the Into UI button, I get a LilyGo logo animation, some sound then it displays 6 choices: Light, Controller, Wireless, Music, Mic FFT, and Configuration.
Light demos the LEDs, Controller shows some gauges which you can use with I/O inputs.
Music evidently can play music files... not sure how you get anything in there.
Mic FFT is some sort of Microphone test. This unit has a built in speaker and microphone.
The Configuration consists entirely of a button labeled Deep Sleep, which when pressed puts the Embed unit to sleep... which after you have a charged battery installed is useful.

It may be dependent on sensing a battery. I'm not repeatedly getting the animation on the battery powered device.
More experimentation is needed.