8. Ring:bit六合一搭建套件案例06：投石机#

8.1. 目的#

  • 使用Ring:bit六合一搭建套件制作投石机

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8.2. 使用材料#

六合一积木搭建套件（淘宝购买链接）

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8.3. 背景知识#

8.4. 积木搭建#

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***注意：接线时黄色线需要连接在端口上方标有数字（0/1/2）的位置。

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通过下面链接下载PDF文档即可获得详细的搭建步骤图 Github下载

8.5. 软件#

微软makecode

8.6. 编程#

步骤 1#

在MakeCode的代码抽屉中点击“高级”，查看更多代码选项。

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为了给Ringbit_Bricks_Pack套件编程，我们需要添加一个扩展库。在代码抽屉底部找到“扩展”，并点击它。这时会弹出一个对话框，搜索”servo”，然后点击下载这个代码库。

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*注意：*如果你得到一个提示说一些代码库因为不兼容的原因将被删除，你可以根据提示继续操作，或者在项目菜单栏里面新建一个项目。

步骤 2#

当按钮A被按下时，设置连接P1端口的舵机转动180°，暂停300ms，设置连接P1端口的舵机转动90°，暂停1000ms，设置连接P2端口的舵机转动0°，暂停1000ms，设置连接P2端口的舵机转动90°，暂停1000ms，设置连接P1端口的舵机转动0°，暂停300ms，设置连接P1端口的舵机转动90°，暂停500ms，设置连接P2端口的舵机转动180°，暂停1000ms，设置连接P2端口的舵机转动90°，暂停1600ms。

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*注意：*由于我们使用的是360°舵机，而Makecode的servo扩展库是适用于180°舵机的，所以在使用360°舵机的时候，设置舵机转动到0°或者180°会使舵机顺时针转动或者逆时针转动，当设置舵机转动到90°时，舵机停止转动。

程序#

请参考程序连接：https://makecode.microbit.org/_VdHDyY6HJFso

你也可以通过以下网页直接下载程序。

现象#

当按钮A被按下时，投石机执行发射动作并自动上弹。

8.7. 思考#

8.8. 常见问题#

8.9. 相关阅读#