DIY FPV mini drone QAV-R 180 quadcopter pure carbon frame kit + EMAX1806 2280KV motor + CC3D / NAZE32 + Dragonfly 12A ESC 2-4S diy mini drone fpv race quadcopter qav250 zmr250 pure carbon fiber frame run with 4s kit naze32 10dof emax mt2204 ii 2300kv