ESP 32 Dev Board Pin Out Difference

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tomc938

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I've been looking at various ESP32 dev boards and have noticed that the board I have seems to be different from the board shown in the schematic at https://www.touchdro.com/resources/adapters/diy/esp32-diy-dro.html (Yuri's page) at least in the location of the pins. (and I have 38 pins vs the 30 shown)

In the schematic W_CLOCK_IN is connected to IO34.

This is my question: is IO34 a constant across all dev boards? (I believe so). What I mean is, does W_CLOCK_IN connect to IO34 regardless of where the pin is actually located on the dev board?

Just want to confirm this before I start building this on my breadboard for testing.
 
tomc938 said:
I've been looking at various ESP32 dev boards and have noticed that the board I have seems to be different from the board shown in the schematic at https://www.touchdro.com/resources/adapters/diy/esp32-diy-dro.html (Yuri's page) at least in the location of the pins. (and I have 38 pins vs the 30 shown)

In the schematic W_CLOCK_IN is connected to IO34.

This is my question: is IO34 a constant across all dev boards? (I believe so). What I mean is, does W_CLOCK_IN connect to IO34 regardless of where the pin is actually located on the dev board?

Just want to confirm this before I start building this on my breadboard for testing.
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Yes. This is how it works in general. The code knows about chip's internal IO mapping. What happens on the board layout is irrelevant.
Regards
Yuriy
 
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