Essentially nothing is loaded on the PCB except the T-Display-s3 and I've verified the traces are all as expected on the PCB. I can load everything and the SD card SPI, UART all function fine, but any I/O defined as a INPUT_PULLUP does not work.

Well, I wish it was that easy. Just for some background I'm an EE with a specialty in RF, so you know where I'm coming from. I've had some really inconsistent issues with the T-display-s3 and have been buying them directly from the manufacturer to hopefully get fully tested good quality. However I h...

This problem has been driving me crazy. I have several T-Display-S3 modules and I have nothing connected to gpio 1 and 16. I have verified there's very high impedance on both lines. I can drive them both high and low with out any problems (using high impedance scope probe). However when using the ar...

I am at my wits end here with this T-Display-S3. The only I/O pins I can get to work reliably are the ones on board for GPIO0 and GPIO14. I was previously using GPIO16 in my post above, but because it goes in and out of sleep mode I thought maybe somethings not quite right with the RTC IO. I tried s...

I have 2 TTGO T-Display-S3 boards. I've been working with them for a while, one is unused and brand new. I'm running the Arduino platform with VS Code. I have a single input pin for a button but lately it has gotten sporadic and seems to be stuck low according to digitalRead but both my DMM and anal...