HoloLens Spectator View Mount

For more information and background, please read:
http://www.thetylergibson.com/improving-spectator-view-a-usable-hololens-mount

Amazon wishlist for all the optional goodies that make life easy with this mount:
https://www.amazon.com/gp/registry/wishlist/2CVA3M6A6YEED/ref=cm_wl_list_o_3

Three mounting options

All three of the brackets are 3D Printable on most consumer 3D Printers. With a build volume of just under 200mm*95mm*75mm, and two of the three are designed to print without any supports.
The center mount point is positioned at the HoloLens’ center of gravity at a height offset that should fit nearly every DSLR camera on the market today.
You will only need to remove the nose-piece before installing any of the mounts. You will need to drill each screw hole out to size after printing. I did this to enable you to use M5 machine screws if desired, or drill out to use 1/4”-20 screws. I used a #3 drill bit with very good results, but you should measure twice and drill once.
I highly recommend using either PETG or ABS as your print material. My mounts are all printed with Hatchbox PETG @ 250c on a e3dv6 hotend with .2mm layer heights. I used 50% infill and 3 perimeter layers with 8 layers top and bottom. This will produce an extremely rigid part.

Mount 1: Light and simple

The first mount option is for folks who want the absolute least weight. It has a single hot shoe screw mount. You will need to purchase a set of Velcro cable ties, a Tripod Screw hot shoe adapter and one 1/4”-20 nut. You will need to print this mount with supports. Print, insert into the cutouts on each arm of the HoloLens and use 4 cable ties through the cutouts to secure the arms to the mount securely. Ream the tripod mount hole with a drill bit. Press fit the nut in the cut-out (you may need to use a pair of pliers or a clamp to get the nut securely pressed into place) and then secure with the tripod screw hot shoe adapter.

Mount 2: Simple and flexible

The second mount option uses the same Velcro ties, but has a more traditional mounting plate configuration. It provides 1/4"-20 holes spaced 9mm on center alternating with 3/8”-16 holes. The tripod drop mount still provides a standard 1/4"-20 center hole with countersink for a nut. The drop mount area also features additional 1/4"-20 holes for more secure mounting to camera cage rigs as well as ARRI 3/8”-16 mounts with pogo pins for alignment.
This mount is useful if you want to mount other gear to the bracket, especially if you’re mounting to a camera cage. I use the internal volume to mount my Tascam audio recorder and wireless mic receiver.
You can optionally use the top mount plate with this mount for a super-secure and rigid rig. The top plate slots into the risers snugly. Secure the top to base with two 1/4" bolts through any of the internal holes in the cheese grid.

Mount 3: Heavyweight

This mount provides the most flexibility for professional operators. It moves the drop mount to a separate printable adapter and just provides the base plate with cheese grid. Similarly to mount 2, you can secure with Velcro straps or use the top mount place with 1/4” bolts.
This mount is useful if it is being installed as part of a larger camera rig system or larger cage.

I hope this helps you create even better mixed reality experiences, and happy coding!

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