QWinOut Micro Pix 32 Bit ARM Flight Controller PXI PX4 PIX 2.4.6 Upgraded Mini Board for DIY FPV RC Drone Multicopter Quadcopter This amplifier suits the users who have some electronic knowledge base to DIY transformation, it may require to set and calibrate ,wiring and so on Micro Pix main controller x 1 ;Pwm to PPM signal convertor with case x1 ;Buzzer x 1 ;Unlock switch x1 ;Wire x2 Size:38*38*11mm Effective pictures,Product do not include other electronic configuration For DIY FPV RC Drone Multicopter Quadcopter