IMU+GPSmodule+compas | Development Universal Pointer

test and description of the "Universal Pointer" development process...
you can check the "arduino uno" c_ode in THIS LINK :
drive.google.com/open?id=1leJ...
for arduino pik the ... v2 folder for read pick the ...txt folder, open both
For now work as expected, i ned to improve optimization of software and hardware uses, build a portable user interface with an lcd and buttons...
think on a cheap structure for hold the thing...
the project must be simple and cheap .. no more than 40$...
PLEASE COMMENT, AND ASK ..