This is the backplane of a 2.9-inch ink bottle that I plan to make myself, and I drew the PCB myself based on the schematic diagram provided by Wei Xue.
I haven't tested the board myself yet. Students who want to use this project should be cautious
I have tested the board myself and the verification passed.
Weixue's 2.9-inch board is now version 2.1, but this is still the schematic diagram of version 1.X.
Moreover, there are differences between the schematic diagram of the latest board and the picture on Taobao. I will not upgrade to Weixue version 2.1 for the time being.
test
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