I'm developing these so some parts will probably change.
EDIT - 15.11.2018
I uploaded a new facehugger piece. It a lot more comfortable. I use 6 mm open cell foam glued to mine and I can use it for extended periods. Facehugger03.stl
I also uploaded a new lens holder. It can hold four lenses for extra magnification. If you can't find the right glasses for it you can get the biggest you can find and grind them to shape, or use my frame as a reference and design your own. Lensholder06.stl
I also added a new extension for the 5,6" goggles, which is shorter and can be used with doubled up lenses for a larger FOV. Extension5.6-04.stl
I also added a new strap piece which can hold a 35 mm wide battery using a rubber band. Strap03.stl
EDIT - 29.06.2018
Uploaded an improved extension piece for the 7" panel which lowers the LCD so that you don't have to look up, and moves the top strap mount forward to improve comfort. It's a lot better now.
EDIT - 08.02.2016
Improved the last 5.6" electronics box. Ends with 03. I removed the audio jack port for clearance on mine. The hole where the jack sits is for a female jack connector to solder wires from the receiver.
EDIT - 05.02.2016
Added a new 5.6" electronics box for a new driver board. Work better than all the other 5.6" boards. http://www.ebay.com/itm/251966755469
EDIT - 03.02.2016
Added electronics box for 5", and a picture of the 5" LCD with the board I have.
EDIT - 01.02.2016
I added an extension for 5 inch LCDs I hope it fits when I get my LCD from Dx:
EDIT - 28.01.2016
Uploaded a new 7" electronics tray with room for a Tarot mini video Rx.
EDIT - 27.01.2016
Uploaded new 7" extension with room for 7" EJ070NA-01J 1024x600 LCD panels, which are slightly wider than the 1280x800 panels.
Clips are for clipping wires to the straps.
I designed two electronics compartments for two different driver boards for the 5.6" goggles. Pick whichever you have or modify /make your own. I will make a third because these boards didn't work to my liking (firmware and io problems). The 7" goggles have a blank box as I haven't received my 7" LCD and controller yet.
There is a flat on top of the extension tube for installing a Fat Shark Trinity head tracker. I mounted the receiver to the top strap with velcro to reduce the weight of the goggles.
The lens holder is made to fit the lenses of locally sourced +3.5 reading glasss lenses (Europris, Norway). If you can't find the exact same glasses simply adapt some other glasses to fit and install with dabs of hot glue. They usually have acrylic lenses which are easy to sand/cut to fit.
The extension tubes are made for up to 5,6" (HV056WX1-100 1280x800) and up to 7" (N070ICG-LD1 1280x800, or similar) LCD panels, but smaller panels will fit. If you fint it difficult to focus because the tubes are too short for you you can stretch them in the slicer to make them longer. I find they work well. I prefer smaller and higher resolution panels for FPV because of the high FOV and low resolution of the signal.