@rs77can Volos Projects on Youtube has started making videos on how to use SquareLine Studio with certain Lilygo products.

Hi guys, long time since I posted.

I just finished my breadboard adapter for the OG T4-S3 and before I burn something up I thought I should ask where I can find info on what Voltage is accepted on the VBUS pin?

TIA.

I have managed to "unconfuse" myself regarding my last point about Lilygo's labelling of pins.

Somehow my brain made a connection between physical pin number on PCB and GPIO. It seemed incorrect that they were identical.
I see my mistake now.

But the other questions remain. I accidentally ordered the version without soldered pins, so it's a bit difficult for me to test if all GPIO's on PCB are available for us.

I'm finding myself curious how many of the existing hardware pins (GPIO's) are available for us to use?

The Touch version of the display would logically need more connections to the MCU than the non-touch version?

For instance, GPIO 1, 10, 11,12,13,14 are marked with TOUCH (in blue) on the pin layout (see attached picture) that Lilygo offers. Does this mean that these 6 pins are not available to us?

Also, the orange/yellow marked pins, for instance MTMS, MTDI, MTDO, are these pins availble to us when using the TOUCH version?

EDIT: Upon further inspection and comparison with the ESP32-S3 Datasheet, something is not correct with Lilygo's labeling. For instance IO44 is marked MTCK from ESPressifs datasheet, but Lilygo put this at pin 39?

@teastain2 Thank you for the additional information.

Where do you see that the 2nd connector can also be used for i2c?
And also, which connector is which?
So little information from Lilygo

@teastain2

The H681 model is a different board completely. See the extra QWIIC? connector? I find zero documentation on this layout.

Hello, this will be my first post.

I have noticed that the board layout is different for Touch vs non-touch models.
I can only find description of connectors for non-touch models.

Does anyone have a description for H681 connectors?