Lead out all the available pins of 32u4, try to compress the volume as much as possible, and use the type-c interface, which is more practical than pro micro. The basic components are all from the Xuan master file. In fact, there are a lot of materials left over from the original. In order to save some money, I originally wanted to Make a separate pad for VCC D+ D- GND. It is convenient for everyone to weld the Type-C interface with flying wires to adapt to the Type-C holes at various locations. I may not have time recently. I hope you can comment more on this project. It is best to correct the errors in the project and publish it to the platform. Our DIY works provide better convenience. If you are interested in DIY keyboards, you can also join the Penguin group 784926090, where experts will answer questions 24 hours a day!
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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
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