ESP8266_UNO V1.0

Video Link:
Bilibili Video -- Function Demonstration and Introduction
Project Overview: This project
designs a UNO-style system board based on the ESP12-F, adding several analog interfaces and reserving a 0.96-inch OLED display interface.
Project Functionality
: The project uses the ESP-12F, adding a 74HC4051 to achieve analog multiplexing, increasing the number of analog interfaces, solving the problem of the ESP8266 having only one AD pin, and reserving an OLED interface. It uses a DC-DC power supply with a maximum input voltage of 35V.
Project Parameters:

The AD section of this design uses GPIO12 (S0) and GPIO13 (S1) as control pins. By switching the high and low levels of these two pins, one AD pin can detect four analog quantities.
This design uses a 0.96-inch IIC OLED display;
this design uses a PJ7805TE, with a maximum input voltage of 35V;

Download Method:

Press and hold the download/reload button to enter download mode, or you can directly modify the schematic to ground GPIO0.

Physical Images :
A demonstration video is provided in the attachment .