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 为什么openmv这个口被单片机供电不可以，而云台配给的那个蓄电池就可以供电？如果单用这个接口接单片机的话，openmv是不是只用接单片机的TX,RX口，而不用接GND的口？
OpenMV的供电方式：
VIN引脚，3.7V～5V。
供电需要GND。
数据传输也需要GND。