关于Arduino从11号插头输出5V时我有点混淆
5V和GND间置电阻 插针上没有电压
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Pong例子带软件显示插针对面电压
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++谢谢
需要为Arduino提供电源