@eliott I'm not sure about this product.
Are you asking for the exact firmware that shipped with your watch when new?
Here is a link to example sketches at the LilyGO repository:
https://github.com/Xinyuan-LilyGO/TTGO_TWatch_Library/tree/master/examples
To be sure, you may raise and "Issue" on this site, which may take a long time.
I have found that a nice inquiry at their office address works:
sales@lilygo.cc
Also LilyGO suggest this GitHub repository:
https://github.com/sharandac/My-TTGO-Watch
Hope this helps!
-Terry

@luki743 said in CAN Transceiver Support:

T-Embed

Yes. ESP32 supports CAN and these are featured S3 boards.

@luffe LilyGO products...generally yes, they charge all the time while plugged in to USB.
You should conduct a simple test with your actual unit, as the documentation is very sparse.
(I could not find a schematic for your board)
-Terry

@danardi It is indeed annoying and it gave me trouble, but I figured out that you can edit the pinconfig.h that appears in the Arduino IDE off to the right with your own SSID and Password and avoid the ESPTouch nonsense. (this 'ESP touch" has nothing to do with the optional touch screen, BTW)
If you are new to LilyGO T-Display S3 I made a support GitHub repository here:
https://github.com/teastainGit/LilyGO-T-display-S3-setup-and-examples
-Terry

@teastain2

(you need to cross over TX to RX so that the TTl TX is the LilyGO RX !)

@ivan Hi Ivan, this site is a volunteer user community site and anything I say is simply "advice".
LilyGO make no claim of waterproof, but it seems well sealed.
I think accidental splashing such as washing hands would be OK.
Otherwise I would "Damp-Cloth" it as you say!
-Terry

@abdnatsheh The Board needs 3.3V obviously, but the recommended battery is 4.2V type rechargeable only.

@brekel
Yes.
The screen is held down with spongy two sided tape and the ribbon cable plugs into a connector on the board.
You might soften the the tape with rubbing alcohol.
They are very fragile.

@ripple_biz
Thank you for that link to the Adafruit ESP32 uploader.
LilyGO has problems with forking the TFT_eSPI, LVGL and other libraries, so it is nice to be able to upload a .bin of a compiled 'good' program.
-Terry

@thejaxco Ideally a (famous) 18650 type battery.
But any rechargeable battery between 3.3V to 5V volts.

@tiak See here!
https://github.com/Xinyuan-LilyGO/T-CAN485
The empty header next to the Power In socket has GPIO and so could be setup in your sketch as Standard Speed bit-banged SPI.
You should pour over the pages of the Espressif documents for your ESP32 and see it any of them are High-Speed, etc
-Terry

@crisant Right away I don't recommend the blank Arduino IDE "New Sketch" without something for it to do, such as a delay(100);.
People have found that they cannot connect afterwards because of the short scan time not allowing any other activity!
I made this sketch to test that the board is working by printing to the serial port:

//words preceded by "//"" are comments and are not executed
bool ticktock; //declare ticktock as a boolean flag

void setup() {          //runs once on start up
Serial.begin (115200); //open the serial port for USB cable
}

void loop() {         //runs in circles!
ticktock = !ticktock; //every pass through reverse the flag
  if (ticktock) {     //test current value of the ticktock flag
    Serial.println("tick");  
  } else {             //prints one or the other to the USB port
    Serial.println("tock");
  }
delay (1000);           //wait for a second and run again!
}

I went to their GitHub repository for uploading instructions and they are different than a normal ESP32
https://github.com/LilyGO/ESP32-Paxcounter#uploading
so try following their ESP32 with LORA instructions

Also when you pull down the board type menu in Arduino IDE where you select your board type, there is also the available ports.
Check to see that the USBmodem is stable.
Sometimes when I get the Failed Uploading error I have to reboot my computer. This has been a "bug" I have faced for years.
-Terry

@brekel Folks have cracked the LilyGO T-Display S3 display inserting into a plastic breadboard...ouch!

@brekel I don't have a touch screen LilyGO T-Display S3.
Even the the LCD cable would be a stretch to extend 10mm, and again that 10mm would require a lateral displacement offset of the LCD relative to the PCB, like a Z.
-Terry

@brekel
Yes.
The screen is held down with spongy two sided tape and the ribbon cable plugs into a connector on the board.
You might soften the the tape with rubbing alcohol.
They are very fragile.

@patofoto Well, it took months and months but finally some guys over on the GitHub for ESP-Arduino finally found it!
https://github.com/espressif/arduino-esp32/issues/8324#issuecomment-1725784617
The helper util file in the onewire lib had an outdated notion that there could not possibly be pins greater that 33.
I edited mine and now it works!
Wow, what a ride!
-Terry

@_flyflo_
"The Guy with the Swiss Accent" is an expert in Arduino and RF.
Check out his posts for more info!
https://www.youtube.com/@AndreasSpiess

LoRa
https://www.youtube.com/watch?v=hMOwbNUpDQA

@teastain2 OK, so I made this as a starter for you, but I cannot do the entire project!
Give me your email address and I will send you the program.
-Terry