ESP32CAM board "AI Thinker" available pins

[zliudr]

I've just started tinkering with this AI Thinker esp32cam board:



I looked up the pins. It looks like the whole left side is the SD card pins. I plan to use the SD card slot. Even one of them is also driving the flash. So I can't use any of those pins for other purposes.

Then the whole right side has but one free GPIO pin, the IO16. IO0 seems to be related to the CSI camera, then OI1 and IO3 are the console UART port.

So am I correct that there is only one free pin, GPIO16, that I can possibly use for something like a button or other stuff?

Thanks.

[al1fch]

Hi !

According to the following schematic GPIO16 serves as Chip Select pin for the on board PSRAM
https://i1.wp.com/randomnerdtutorials.c ... ttachment]

[zliudr]

Wow thanks! I missed that. So really no available pins at all.