Newbie: I baught a ESP32 with a weird pin layout. How to identify GPxx pins?

NiklasG
Posts: 2
Joined: Thu May 16, 2024 4:39 pm

Newbie: I baught a ESP32 with a weird pin layout. How to identify GPxx pins?

Postby NiklasG » Thu May 16, 2024 4:49 pm

Hello everyone,
this is my first time working with an ESP32. But I have some Arduino experience.
I baught an ESP32-WROOM-32D and now I try to find documentation to the pin layout but cant find it (I didnt know there are SO MANY different versions).
My plan is to follow a tutorial to connect a round display (GC9A01) with the ESP32, because my Arduino is so slow and has not enough memory for bigger pictures.
https://www.youtube.com/watch?v=k2c2zCmC_X0 This is the tutorial.
https://www.aliexpress.com/item/1005006 ... pt=glo2deu this is the ESP i baught

My problem is, that I cant find the following GP Pins, because my ESP only has "Dxx" Pins and i cant find good documentation about it.
How can I identify the following pins?

GP23
GP18
GP22
GP16
GP4

The only pins I can identify are the GND and 3v3 ones :D

Thank you for helping!!

mikemoy
Posts: 627
Joined: Fri Jan 12, 2018 9:10 pm

Re: Newbie: I baught a ESP32 with a weird pin layout. How to identify GPxx pins?

Postby mikemoy » Fri May 17, 2024 12:23 pm

This site here looks like the same pinout you have.
https://www.electronicshub.org/esp32-pinout/

Also, legit boards from espressif can be found here.
https://docs.espressif.com/projects/esp ... rted-guide

Basically treat the Dxx pins as GPxx.

NiklasG
Posts: 2
Joined: Thu May 16, 2024 4:39 pm

Re: Newbie: I baught a ESP32 with a weird pin layout. How to identify GPxx pins?

Postby NiklasG » Fri May 17, 2024 2:10 pm

Thank you very much! Really helped!

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