search

Xinyuan-LilyGO / LilyGo-T-Display-S2

47 stars 16 forks source link

Pinout #1

Closed bonnom closed 3 years ago

bonnom commented 4 years ago

The pinout image for this board on the website is not completely clear. The SD card pins aren't mentioned and the pins for the LCD doesn't show all the pins. Also it is not mentioned what the PS_RAM pins are.

From what I can read from the code is that the sd card pins are:

The image on the website for the LCD pins:

But if I take a look at the code in this github the pins for the LCD seems to be:

What exactly are the pinouts SD_card, LCD and PS_RAM?

eirinnm commented 4 years ago

To add to this: a schematic would be very useful!

DIYman commented 4 years ago

Following images attached are from their website which doesn't even have ssl certificate :D It's probably accurate but I wouldn't count on it.

image image

Also I believe a maker board is supposed to have open source schematic and layout so people after evaluating the technology might develop their own products, or even understand if you have a pull up somewhere or if is a pin actively connected to ground over a resistor and so on... A good maker board is supposed to have 3d models in git or on product wiki so you can build enclosures around the product you are buying, or at least the god damn dimensions of where the screen is what is the thickness, nobody needs to take a caliper in hand in 2020 to measure a maker board they buy.

That's why I always recommend paying just a bit more and getting a board by adafruit, sparkfun and good quality well documented, much more working examples even in depth videos on their youtube, products like these are infinitely better, they save you time which is eventually the currency of the century. So I am sad you ended up here looking for answers because you ended up getting your hands into a piece of silicon&copper trash, I did also, some initial research and writing this message is the most time I will spend, We had to buy few thousand modules for a project but no way I am even getting a second module with this kind of absence of any support

skieast commented 4 years ago

The pins from the code appear to be correct as the SD Card and LCD work. I'm not sure as to the MISO on IO4 as I cant get that to work reading back the LCD_ID from the ST7789 controller. Could be a bug in my code or in the demo code.

lewisxhe commented 3 years ago

The schematic has been uploaded.