[Verified] ESP8266 Minimum System Board

The PCB has been tested and verified. It's a minimum system board for the ESP8266, using the ESP-12F module.
 
 
 
A 0805 package is used to minimize soldering difficulty, and the easiest-to-solder 4-pin Type-C package is also chosen.
You can order the PCB directly, and components can also be purchased directly from LCSC. Buying the ESP8266 module on Taobao is much cheaper.
 
For Arduino IDE
 

, select NodeMCU 1.0

 
for downloading.
 

Connect the serial port: RX to the ESP8266's TX
, TX to the ESP8266's RX
, 3.3 to the ESP8266's 3.3,
and GND to the ESP8266's GND.

 
Downloading steps
 

: Before downloading, open the serial port tool and observe the module's startup or reset print information at a baud rate of 74880.
Press and hold FLASH, then press RST to restart the ESP8266. Afterward, you can release both buttons.
If the serial port tool displays the following characters, the module has entered download mode (the numbers in `cause 1, boot mode:(1,7)` may vary, but this is not important), and you can proceed with the download normally. ets Jan 8 2014,rst cause 1, boot mode:(1,7)
In the Arduino IDE, click Download, wait for the download to complete, and then press RST to manually reset.