用到了io和time，先设置IO的map方式，然后是引脚。接着死循环，交替的让18脚输出高低电平，中间是时间。 原理是很简单，通过快速的改变18脚的开关状态来工作，延迟时间用音调计算而来。 初始化的韩苏护创建一个check_var的成员变量，包含了一个bool的变量，未 ...

Mike Lopez has created a new piece of hardware that Raspberry Pi enthusiasts may be interested in called the Avocado Pi. The new piece of hardware has been specifically designed to provide a way of ...

Since the pandemic continues to spread around the world, it seems likely we'll be spending the winter staying safer at home. And with cooler temperatures keeping us indoors and making outdoor ...