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micro:bit 实验06 - 拧旋钮控制屏幕，读模拟量 · App Inventor 2 中文网
... 三、界面组件
四、分步搭代码块
第 1 步：把 P0 配成模拟输入
第 2 步：把读数映射成位置和百分比
第 3 步：读数太抖就滤一下
五、排错表
六、下一步
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