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为什么通上电了无法脱机运行，Vin通了3.3V的电压，电压表测量到3.17V，试过用电池供电，也无法正常执行，不知道是不是电池电量不够，目前正在充电，试过点灯程序能脱机运行，但是我自己写的一个人脸识别代码却好像无法正常脱机运行
Vin要5v电压