i have had-like many fellows from DIYdrones - a great success with AP from APM, but the think that made me really excited was the real plug n play performance. i just connected everything on APM2 and Bixler, load the param file from wiki and threw it on the sky! the latest code recognized all my new gear automaticaly (solderd onboard GPS, external ublox, RFD900) and Mission planner UI guided me throu a 5min setup.
No tuning! nor Balancing for the extra GoPro, nothing! I just flew for 5-7 minutes for the auto declination do its magic and then switched to Auto!
if you are a new comer searching for a cheap trusty platform and for a super DIY autopilot you are in the right place!!