Use Essence's ESP-C3-12F-M WiFi chip, input data through the CH340N chip, and then use AMS1117-3.3V to step down the voltage and then supply power to the chip. Use the "Essence Technology" WeChat official account to perform WeChat network distribution. To realize the interconnection between mobile phones and clocks, since it was the first time to practice and use Lichuang EDA tools, the project did not make a lot of innovations.
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