Note: not all GPIO’s are accessible in all development boards, but each specific GPIO works in the same way regardless of the development board you’re using. Note: I bought mine ESP-WROOM-32 chip here On the bottom of this blog, you can download the PDF with the ESP32 – PinOut! Use this diagram if you’re using an ESP32 bare chip in your projects. The following figure illustrates the ESP-WROOM-32 chip pinout. What pins should you use? What pins should you avoid using in your projects? This blog is a simple and easy to follow reference guide for the ESP32 GPIO’s. Not all pins are exposed in all ESP32 development boards, and there are some pins that cannot be used. There are many questions on how to use the ESP32 GPIO’s. ![]() ![]() The ESP32 chip comes with 48 pins with multiple functions.
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