I went for the following parts:
- 5.6" 1280x800 LCD-display with controller board.
- Air mouse instead.
- 3D printed enclosure.
- Plastic "Google cardboard" which was modified in order to fit the printed enclosure for the display controller board, mouse and button. The lenses are fully adjustable, which was a must.
- Total weight: approx 330 grams
- Total costs: approx 200,- (dollars)
The air mouse is quite accurate, but drifts a little bit over time (not directly noticable). It gets its power from the display controller board, instead of two AAA batteries. It was also cut down a bit to reduce its size. In order to reset the mouse, the button on the right side is pressed and tracking resets and resumes normally. The printed letters are a little obnoxious, but I had 0.2 meter black fillament left
Things to improve:
+The only major disadvantage is that the power and HDMI cable come out underneath and pull your head a little bit down. Maybe something to improve and send all the signals over a single cable.
+Add headtracking through an Arduino and gryo, for now I went for the quickest solution
+ Refine the enclosure, in order to reduce the overall size and weight a bit more (when the 1st adjustment is made)
