I'm thinking of using the following for an autopilot:
Arduino Mega connected to:
9 Degrees of Freedom - Razor IMU - AHRS compatible
Serial Servo Controller -> connected to at least 3 micro servos
65 Channel SUP500F 10Hz GPS Receiver with Smart Antenna
Ultrasonic Range Finder - Maxbotix LV-EZ1
The reason I haven't gone for an ardupilot or similar specialised UAV hardware is that I want maximum control and flexibility with the system (and potential for reuse in other projects).
Currently I am having difficulty finding the serial mode that the 9 Degrees of Freedom - Razor IMU - uses....I plan on using the hardware UART's on the Mega for both the GPS and the Razor module.
Therin lies another problem...that GPS looks to be LVTTL and the Mega seems to need TTL serial signals...what does this mean I need to do to make them compatible?
I'm hoping some of you can advise on these possible issues and point out any other compatability problems I might have....if you do see something, please suggest an alternative! Or indeed any improvements!
I also could do with some minature Pitot tubes for airspeed, but not sure where to find these.
Looking forward to hearing from you!
P.S. A search on Sparkfun will find all those components (I just didn't want to post links in case it contravened some user agreement)