Here's a YouTube video where you can see the whole process of build, and test.
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Step 1: ESP8266 Programmer and Tester Shield (My Own Dev Board)
The ESP8266 it's a very famous shield for IoT and DIY projects due it's easy way to be used and programmed with the Arduino IDE (never AT commands XD).
So I designed for you this shield that lets you test and programmed your ESP8266 just as an arduino board.
Step 2: Circuit Diagram and Materials
Step 3: PCB Gerber File and Manufacture:
Step 4: Build and Welding Process:
With the PCB already build and your materials on hand, begin welding everything in place and done.
Step 5: Finally, Update the Drivers for the FT232RL
It's necessary to connect the board and go to "device manager" and search for the yellow sign that says us to update de drivers of the USB to TTL converter.
1- Right Click on the device.
2- Update firmware.
3- Click on update automatically from the internet.