OK, I will now trying to draw something in GIMP.
Here's picture; I hoping that you understanding.
I am trying to find a solution to not use several bytes and read/write memory;
I know that there is easier way to use stepper motor, it would require a lot of processing power if I am using microstepping which are a lot better because of precision.
Here's a solution:arduino card sends output to #1 heading, X and Y coordinate position to/from airplane#2 heading and X Y position read from #1 with logic, arduino reads input from #2 heading position, then arduino reads angle between heading #1 and #2 then send to the autopilot so it turn to the angle that I have set input instead calculate each realtime of heading #1 and #2 and don't use logic.