Modified from the open source project: https://www.oshwhub.com/TheLight/zi-ding-yi-jian-pan, just adding a WS2812B rgb lighting effect, and there is a breathing light effect after the button is pressed.
2021.12.7 -- USB D- adds a 10K pull-down resistor, which fixes the problem of the device disconnecting after running for a period of time.
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