Arduino Based Flight Controller with MultiWii Software Connection Problem

Hi everybody,

I am trying to build an Arduino Based Flight Controller for my QuadX. I am using Arduino MEGA 2560 as a board, GY-88 IMU, MultiWii Software and Flysky iA6B receiver. I can read the values coming form IMU sensor but the Board did not read any command coming from the remote controller. Do anybody know the Connection schematic of the MultiWii Software for Arduino MEGA 2560.