四轴飞行器之飞控程序，感兴趣的同学下载吧！-Four-axis aircraft of the flight control program, interested students to download it!

四轴飞控，关于飞控板的PCB原理图，很实用，亲测可用。建议下载。希望有用时可以分享给其他朋友。谢谢！-Four-axis flight control, flight control board on PCB schematics, very practical, pro-test available. Recommended to download. I hope useful when you can share it with other friends. Thank you!