270pF capacitors between 36 - 37 and 38 - 39 GPIOs about ttgo-t-display HOT 5 OPEN

There's no information about their role in the ESP32 datasheet, but they've got a short description in the ESP32 hardware design guidelines :

from ttgo-t-display.

Is it possible to remove them from PCB?

from ttgo-t-display.

Thanks @ddosoff - I didn't catch this on my project. I've gone ahead and removed those CAPs.

I hope we get an answer as to their intended function.

from ttgo-t-display.

My guess is these have a role in touch sensitive switch .. But not shure how

from ttgo-t-display.

I found an article about these capacitors, they're related to an LNA (low noise amplifier) that's actually included on the ESP32, but didn't work well so it was simply removed from the documentation, even if it still exists in the chip.

Someone took the version 1 of the documentation (where it was still described) to find out how to use it.

Full story here : https://github.com/krzychb/esp32-lna
And detailed operation here : https://github.com/krzychb/esp32-lna/blob/master/docs/lna-operation.md

from ttgo-t-display.