feat: 全量同步 254 个常用的 Arduino 扩展库文件

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yczpf2019
2026-01-24 16:05:38 +08:00
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#FreqCount Library#
FreqCount measures the frequency of a signal by counting the number of pulses during a fixed time.
http://www.pjrc.com/teensy/td_libs_FreqCount.html
![FreqCount and Test Equipment](http://www.pjrc.com/teensy/td_libs_FreqCount_1.jpg)