运用proteus绘出的电路板，程序请联系我，我给你。-use proteus design PCD for speaker. it is good for your use.

四旋翼无人机飞行程序设计，包含电调，电路板设计，pCB等部分。分享给大家。-Quad-rotor UAV flight procedure design, including power transfer, the circuit board design, pCB other parts. To others.