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3 年
用BH1750环境光传感器制作一个照度仪 - 电子工程专辑 ...
Nokia 5110 led out接地 ---- Arduino GND接地引脚,这时LCD又背光。 如果不需要背光,就将Nokia 5110 led out接地引脚连接到Arduino板子的5V引脚。
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