by WickedAndy, published
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This thing is great! I was working on my own HMD when I came across it, but I had a smaller driver board and different LCD attachment tabs on my
HV056WX1-100. However, your LVDS to HDMI cable adapter board worked like a charm for mine, and I was able to adapt some of the lens holder measurements from your model as well. Next up is the welding helmet mount!
I'm still learning the ins and outs of stereoscopic imaging, so I wanted to ask about your choice of lens spacing. Was that just a personal choice based on your IPD, or did you want to maximize outer peripheral vision while keeping the focus close to the center line? I put the lenses 65cm apart, due to my personal IPD, which gave a pretty good fit and let me avoid sanding anything, but I get the sense that the coverage on the screen is a little bit non-standard (compared to a lot of images I'm seeing) and will require customization in whatever software I use it with.
Thanks for posting the design!
Awsome job! I've wanted to do this for years (but with a phone for the screen) to play with head tracking. I am lazy, and now there is a crowdsourcing project (Oculus Rift) doing it, so I'll wait for them.
Still something to consider for the DIY community; something you just slide your phone into might be cheaper... (but now becomes more a software project than hardware)
(NOT an endorsement of these products! just examples.)
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on the Ultimaker, but I believe the Replicator should be capable as well.
Total cost of all parts comes to around $450 (see BOM below)
1. download the .stl files provided here and print them out
2. while waiting for the prints, order parts needed from the following BOM
3. this is going to be a bit of a work in progress, I am working on a
complete build log, with step by step instructions, might be a week
or 2 before it's complete, check back!
(the exploded view photo here should give you an idea how the pieces fit)
4. follow progress on my build at the mtbs3d.com forums.
* the zip file contains the gerber files needed to make an LVDS -> HDMI
breakout board, just send the zip to a place like itead studio etc.
or etch your own.
* you need to print 2 of the RA_HELMET_MOUNT.stl, the 2nd one should be mirrored
There are 2 "Lens Plates" in this design, one for a LEEP optics variant for the 120+ deg fov, and another that uses 50mm lenses, that give you a 90+ deg fov. the choice is yours, if you do use the LEEP optics, read the notes below regarding the lens grinding jig.
* if you printing the leep lens holders for grinding the lens edges, you need to do the same, print 2 of each and mirror the 2nd one, for left/right lenses.
the holders are used to clamp the large lens of the 2 lens set, you then use a belt sander to grind the edges down till they are flush with the printed jig. simple..
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