Ok this is my ArduMega Setup. I am using the ArduPilot Shield V2, A locosys 4hz GPS, SCP1000 Pressure Sensor (not connected to I2C yet) and the IMU ADXL330/LISY3000 Breakout board.
I purchased the Ardupilot Mega and a bunch of components for a UAV project on my Easystar. The problem I am running into is that the components require 3.3v. I don't see any source coming from the Ardupilot Mega that can provide the 3.3v yet I
