Colorsilk screen ESP12 and ESP32 quick downloader burner

It saves a lot of money on buying a development board, and you can use it on the card. It is very friendly for program burning and testing.

The PCB of the antenna part is cut off for easy disassembly without affecting the signal.
Pictures can be customized.
The colored one is the second version. The esp12 pad of the first version PCB was wrong. It has been changed now.
The following black PCB picture is the first version.

The following color PCB pictures are from the second version
If you don't want to proof color PCBs, just delete the pictures and icons in the project.

Test chart.
Press RST when downloading ESP8266 and press BOOT when downloading ESP32.
Then it's about the test rack.
I chose three types, and also adopted some methods from other open source projects. It is recommended to use pins because they are convenient, fast and cheap. The second one is specially designed for test racks, but it is a bit expensive so I don’t recommend it. The third test pin is also OK, but still not as good as a pin. There is another option to use 0.3mm or 0.4mm spring steel wire to fold the shelf yourself. I have not found a way to tin the steel wire. If you have a way to tin the steel wire, you can still use this solution. If you are too lazy to bother, pins are the first choice. Please refer to the picture above for the installation method. Pay attention to safety during installation as it may irritate your hands. If you are not careful, a bloody hole will be formed.
The links to purchase the required components are attached below. If you have some components, you don’t need to purchase them all.
The circuit may still be improved, and you are welcome to optimize and share it.