I'd assume the electronics are very modular and probably just clip into place in a single unit. You do need a battery compartment or something though, and the buttons need to fit well. Wheel can come from donor mouse.
Unfortunately they are not. Mouse motherboards are generally shaped like the mouse, i.e. right-handed, and the side buttons are on ribbon cables too short to move to the other side. Impossible to reorient without serious work.
Unfortunately they are not. Mouse motherboards are generally shaped like the mouse, i.e. right-handed, and the side buttons are on ribbon cables too short to move to the other side. Impossible to reorient without serious work.