bitcraze-crazyflie-firmware

代码说明：

  一个关于四轴飞行器的国外源码，bitcraze-crazyflie，很出名的一个国外飞行器开源组织开发的源代码，已经通过测试，其中包含卡尔曼滤波等自平衡算法(A source of foreign aircraft on four axes, bitcraze-crazyflie, very famous aircraft of a foreign organization to develop open-source source code, has passed the test, which includes self-balancing algorithm Kalman filtering)