ESP32 8266 ink screen development board

I have modified Tangtang, the open source circuit of the duck guys, and added an ESP32 module. Generally, you can use the disassembled ESP32 solo. It is very fragrant and cheap, and the memory is large enough. You no longer need to worry about ram.

At the same time, the weather calendar firmware in the attachment is provided. It is open source and has a link. It is also a modification of someone else's. It is a very preliminary version with many bugs. If you don't mind, don't use it.

There is no problem in driving esp8266 in this pcb. When driving ESP32, it will prompt a voltage problem. Just turn it off in the code and it will not affect it (there may be a problem with my ESP32).

The measured voltage and current are enough to drive the ESP32. If you are not sure, you can modify the power supply part.

In the picture, my flying wire directly supplies 3.3v to the ESP32. There is nothing special about it. You don’t need to fly the wire.

FPC positions of various specifications have been introduced, connected up and down, compatible with many boards, and parallel ports are planned to be introduced in the future.

The USB download part is powered by 5v. I forgot to modify it before, which will cause the voltage to be too high and the wifi signal to become low. It is recommended to use battery power. It will not affect normal use.