I had a spare ArduPilot Mega1280 Board and would like to built a small Arducopter something similar to this http://diydrones.com/profiles/blogs/indoor-fun-with-a-tiny.
I will be only using folowing additional features
I would like to know if the latest code Arducopter 2.0.55 will fit in ArduPilot Mega1280. If not till what version will the code fit.
yes it will. You'll only loose the logging capability.