Required Parts:
1x  2-6S BEC / 5.3V-3A / DF13-4p

1x Sensor Hub X2

2x  HS-050-LV or 2x HS-100-LV or 2x HS-200-LV Sensor Board

1x Adapter Cable for Pixhawk 2

Optional Parts:

1x Enclosure for Sensor Hub X2 -> Highly recommended as shrinking tube is not possible here to protect the board

2x HS-xxx-xx Enclosure -> To protect the Sensor Board
1x 2-6S Backup BEC for Pixhawk 2