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How to make virtual reality glasses?

You can assemble an unusual VR helmet with a cardboard case yourself or buy kits ready for assembly. Such a device was codenamed ” Google Cardboard”. Glasses cannot be called a full-fledged device for immersing in virtual reality, but it will be useful to twist it in your hands to expand your horizons. We have written assembly instructions and prepared a PDF template for your convenience, you can download and print it.

Specifications of finished products

The package  completely depends on the store where you buy. The classic version on the official Google website is a regular cardboard box, where the insert for the smartphone is held on with Velcro. On other sites  , the kit may additionally include an NFC chip, headphones with deep 3D sound , Velcro for the head, a special sticker that prevents the smartphone from sliding on the box.

As for the technical side, the Cardboard can be safely called a universal platform that will fit a modern smartphone with a diagonal of 4 to 6 inches. This is where the technical characteristics of the “cardboard VR ” end, the rest of the parameters depend on the phone.

Namely: a high ppi value (pixels per inch), and the higher it is, the better. Let’s explain why this is so important. When a user holds a smartphone in their hands, it usually happens at arm’s length, that is, about 30 cm. At such a distance, the human eye does not perceive a number of pixels on the screen. But when it comes to using the phone as VR , the distance is reduced to 5 cm, and the owner begins to distinguish visible squares, these are pixels.

We recommend purchasing one of those products that are presented on the official website https://arvr.google.com/intl/ru_ru/cardboard/get-cardboard/ , as in these models you can adjust the comfortable distance between the lenses and fit it to your phone. In Chinese cheap glasses, this feature is usually not available.

The screen resolution is the most important – for a pleasant use of virtual space, it is worth considering modern developments with a 2K display.

The presence of a magnetometer in the phone will come in handy – this is a sensor that evaluates changes in the magnetic field and determines the position of the device in space.

Support for NFC technology is desirable, it allows you to switch applications to VR mode when you put the phone in a helmet.

What you need for self-assembly:

  • Cardboard. Look for thick material, similar to shoeboxes, rather than thin material, like from under TVs or refrigerators. The average leaf size is 25 × 59 centimeters.
  • Magnets. There are two of them: neodymium in the form of a circle, the other ceramic in the form of a flat disk.
  • Lenses. Biconvex lenses with a focal length of at least 4 centimeters are preferred. They are the hardest to find. You can take it on Aliexpress , the cost of the kit is less than a dollar, but you have to wait.
  • Velcro. Comfortable fasteners for the head, measurements are individual, in the fabric department or in the atelier.
  • Elastic band or non-slip sticker. Needed to fix the gadget inside the helmet, at least 8 centimeters, or look for a special non-slip sticker
  • Template for printing on a printer

Remember that cutting out the cardboard and then gluing the parts together will have to be done with the utmost care and precision. Is the game worth the candle? Wouldn’t it be better to purchase a ready-made kit, which is enough to assemble from ready-made parts, or to get it already assembled?

On Aliexpress you can find good options for a couple of bucks. And the store shelves are full of ready-made Cardboards in insanely bright, stylish colors, featuring characters from TV shows, movies and video games. Such helmets will allow you to adjust the distance of the optics, which guarantees the safety of glasses for vision, and the mounts will be reliable. Plus, such stores put nice additional accessories in the kit: from an NFC chip to high-quality headphones. True, for this option you will have to say goodbye to $ 10-30 and resolve the issue with delivery, there is no direct transportation from Google to an address in canada.

If you want to save money on VR and want to understand the assembly of the helmet, then look for components or buy a ready-made gluing kit. If you want to enjoy virtual reality without risk to your eyesight, without wasting time, and want the accessory to please with its design, and most importantly, if you are ready to pay a few tens of bucks, then get a ready-made device. In any case, the savings are significant compared to the competition with plastic cases.

Applications and video games

To get started, you need to download the Cardboard app to your smartphone from the App Store , Google Play , or Microsoft Store.

And the games are searched for by the abbreviation ” VR ” in the title . All programs with a virtual reality cardboard icon on the icon will work fine.

For starters, you can try:

  • Volvo Reality
  • Roller Coaster VR
  • Mercedes VR
  • Hang Glider

If you want to connect your device to your computer to enjoy full-fledged VR games, then you will need a phone cable and the TrinusVR app. The program is paid, but there is a demo version for 10 minutes.

Conclusion and expediency of purchase

Of course, it is silly to compare this simple and inexpensive product with giants like Oculus , Sony , HTC , Valve . Professionals in this field engineering and software achieve the highest quality detail in the world of virtual reality. The cardboard helmet is not very durable and is far from perfect. Nevertheless, it is the Cardboard that can become the first discovery of the VR world and give a general impression of this technology. Plus, mobile gaming will appear to you in a completely different light. In addition, it is inexpensive and does not require a lot of time to set up.

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