Hi there.
I got project is to fly the helicopter with computer and Arduino
I've searched the internet, they do have the codes, but it doesn't work
Is anyone can help me and provide the working code?
A lot depends on the helicopter you want to fly.
A stable coaxial helicopter will be a lot easier to control (with a human or by a computer).
I think quadcopters are a lot easier for computers to control than collective pitch helicopters.
I think there may be some autonomous collective pitch helicopters now a days but helicopters can be very difficult to control and it's far from a trivial task to make one autonomous.
What sort of helicopter were you wanting to use? It would be a good idea if you were able to fly the helicopter yourself prior to attempting to get the helicopter to fly autonomously.