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openmv如果硬件连接的话，是不是将蜂鸣器的vcc接openmv的3.5v，蜂鸣器的end接openmv的end，再用蜂鸣器的io口接openmv的引脚就好了？
所有工作第一步，看说明书！没有说明书就找厂家要！
看蜂鸣器的说明书，里面有蜂鸣器的供电电压，和逻辑电压。