Write in front

First of all, I would like to thank Lei Feng.com and Bird Watch for giving me this opportunity to evaluate Pico1. The author has always been interested in the field of virtual reality. As a graduate student, there is an Oculus DK2 in the laboratory, so he often experiences some virtual reality applications and has developed several experience demos. Pico1 mobile terminal head display should be my first. There was a Google Cardboard before, but now it is basically gray. I am very happy to get this evaluation opportunity. First, I have not experienced the non simple mobile terminal head display. Second, I have my own mobile terminal head display, so I don't need to use Cardboard anymore

Unpacking

Pico1 The packing box of is shown in the figure above,

When I first got the express, I felt a little strange. It seemed that the box was much longer than I expected. The packing box feels very good, with the front printed Pico Of logo , below A new reality It feels like this device can take you into another world. A label of Lei Feng's trial is attached below. There is a label on the back with some product related information, such as manufacturer and place of origin.

When I opened the box, I saw a label for Lei Feng's trial use at the first sight, indicating that the box had been opened. Alas, I'm a little disappointed, but since it's a trial, I don't need to care about it. There are thick foam pads on the lid and inside the box to protect the equipment from collision during transportation.

The box is mainly divided into two parts. There is a small accessory box with a sheet on it Pico Of VIP The membership card has a card number on it, which can be used in PicoVR I guess you can enjoy any discount in the app. There is a helmet strap, a spectacle cloth, a manual, and a data cable in the accessory box USB External interface should be used for charging. I was curious and tried to squeeze these small parts to make the space of the whole packing box smaller. I felt it was difficult. So I think the layout of the packaging box is very reasonable. It not only looks clean and has high space utilization, but also ensures the safety of the whole package during transportation.

There is a layer of protective film on the lens and transparent front cover of the helmet. When I just took it off, I felt a little strange. I didn't know what to do when the front cover was made transparent. I scanned the manual and saw that there was a button that could open the front camera of the phone. At this time, I found that the indicator light on the top was on. Maybe I accidentally touched it when I was playing with it. I pressed the round button next to it. It should be the power button, but there was no response. After a long press, the red and blue lights began to flash alternately, and it could not be turned off. I tried to check the manual to see what state this indicator represents (associated with my Bluetooth headset, I think this should be the state of Bluetooth pairing with the mobile phone), But I read the manual from beginning to end, but I didn't see the meaning of red and blue flashing alternately. It was a bit strange. I felt that the manual was not detailed enough, so I had to put it on again and let it flash. It was estimated that it would not flash when I was tired of flashing.

On the top of the helmet is the power button, the status indicator, and a myopia adjustment knob. When you see one knob, you will naturally associate it with a problem. The helmet cannot cope with people with different myopia levels in both eyes; One of the two sides is Logo On the other side (the right side when wearing) are some keys. Layout and GearVR Similarly, there is a touchpad, on which is a return button, and in front of the touchpad is the volume increase and decrease. Suddenly, the question is what to do with left-handed people. Try to turn the helmet upside down, so that the touch area is on the left side, and the helmet will not be worn. This is not good. It seems that if it doesn't GearVR Make it the same Rink For left-handed people, interaction is really uncomfortable. Either use a non habitual hand, or put the Monkey King in a pose to experience the helmet. The lower part of the phone is the headphone jack and the charging line jack; The whole helmet is still very light iphone5s The weight seems to be about the same.

The mobile phone is put into the helmet in the form of a mobile phone compartment. Since there is no socket between the mobile phone and the mobile phone, the interaction should be completed by Bluetooth. It suddenly occurred to me cardboard The first time I saw them, I and my classmates worshipped them for a long time. But I'm also curious about whether the mobile phone compartment will become loose after repeated use because it has no place to lock the phone. I used my iPhone to try it out. The cell phone compartment swelled a little because of a cell phone being crammed into it, and it fits more closely with the surroundings. However, after two shakes, I still threw the cell phone compartment out together with the cell phone. Fortunately, I tried it in bed. I made up my mind whether the force I used just now will produce the same force when my head shakes. I felt that it should not have such a great force when my head shakes. However, after using it for a long time, I still worried about whether the parts will become more loose, and finally the phone will be thrown out.

Instructions and assembly

It is Pico1 I followed the instructions step by step.

First of all, there is a strange problem. It seems that I am missing one accessory. There is no helmet top wearing component. Maybe you forgot this accessory after you opened the box T_T 。

The manual specifies the vision requirements for the experienced person, and myopia is less than eight hundred Degree, binocular difference is less than two hundred Degree, astigmatism less than two hundred Degree, pupillary distance at 54mm to 71mm Within the range. The head display of virtual reality has always been a complex and important problem for people with myopia, which was previously useful Oculus DK2 Did a few Demo People with myopia say that they are vague, but they just want to experience it, so they are too lazy to adjust it. I don't know if there is any way to solve this problem in terms of rendering, so that hardware manufacturing will be easier. I also wrote thirty It's better to have a rest for ten minutes. It's not recommended because of vision development problems twelve For children under the age of.

In terms of applicable mobile phones, the instructions specify the market 5-6 Inch Android phone, preferably 1920*1080 And above, with gyroscope.

Pico1 with headband assembled

use

First of all, because I have always used the apple, so there is no Android I borrowed the machine five Three machines, Samsung Note2 , Samsung Note3 , Samsung S4 , two millet and red rice, including Note2 function PicoVR When the mobile phone is stuck, other mobile phones can work normally.

Let's talk about it first PicoVR this APP , flashback often occurs, many times when downloading games. So I didn't play any games, only tried a few three hundred and sixty Degree video. There is still a lot of content in it. Without the use of the head display, I clicked on several 360 degree videos and felt that the definition was not very high (I mean the definition of the video itself).

The next thing I want to complain about is the problem of cell phone hibernation. To be honest, I think this problem is a bit low-level and should not occur. Because I have selected several mobile phones, and I have a general memory, every time I insert the phone to look at it for a while, the screen goes black, and I have to take it out to reset it. After the experience, I forgot to turn it off and do not sleep. As a result, my classmate told me that the phone was always on, but there was no power. I think the Android SDK must have left an interface for setting the phone not to hibernate. Haven't the team developing the app tested it? When they tested it, they didn't find it troublesome to switch to hibernate?

The problem about Bluetooth connection appears on Xiaomi Hongmi's mobile phone. I don't know why. Every time the Bluetooth connection is connected PicoVR When everything is normal, enter PicoVR After that, the Bluetooth connection is broken. So every time the phone is placed in the head display, there is no way to control it. There is no way but to play video outside the head display, and then put it in the head display to see quickly. Samsung's three phones do not have this problem.

After that, the distance sensor does not work randomly. Wearing the head display several times, the APP does not switch to VR mode. I don't know why. Is it because my face is not cleaned~~

As for the mobile phone compartment, the mobile phone compartment is still tightly clamped to the mobile phone, resulting in Note2 ， Note3 The volume keys on both sides of the two mobile phones were touched by mistake, as shown in the above figure. After five or six attempts, they failed. Finally, they tore a piece of paper and used the original adjustment rack in the warehouse to raise the phone in the warehouse to solve the problem, which was a bit inconvenient. This problem has also occurred on Cardboard. That's how I see it. Some people say that the fragmentation of Android has seriously affected the development and adaptation of related devices. There are too many brands, and the resolution is very different. I think if a mobile head display wants to adapt to more mobile phones, its experience will not be very good. For example, GearVR only supports three mobile phones, which I think is a guarantee of experience effect.

As for the myopic adjustment knob, I also wrote earlier that because of a single adjustment knob, it must not be able to adapt to people with different myopic eyes. I chose a nearsighted friend whose eyes are not too far apart（ two hundred and fifty Degrees, fifty Astigmatism) and my parents. When they put it on, they felt that the picture was not very clear. I asked them to adjust the myopic knob, but they said there was no change. But it is not sure whether what they said is really caused by myopia or the low definition of the image itself. When I tried, I felt that because of the resolution of the phone, the picture itself was not very clear, and the screen effect was very obvious. So when I adjusted the myopic knob, the picture did not change significantly, but I did feel that the picture was changing.

Last but not least, after unpacking, I found that this head display has almost no heat dissipation. I blew air through several holes around the lens. I felt that the air flow was not very smooth, so I suspected that the lens would fog after a period of time. It turns out that water drops begin to appear on the lens after wearing it for only three minutes, which is a serious problem affecting the experience.

summary

Combined with the price and the advantages and disadvantages of the head display itself, I think that first of all, if you want to experience the effect of the head display on the mobile phone is not bad, you need a mobile phone with good processing power and screen resolution; Secondly, the support of the content platform is also critical, PicoVR There are still many undesirable aspects in flashback, hibernation and interaction; Then, the problem of fogging is very serious GearVR , polar curtain or PlayGlass That kind of fan with active cooling; But compared with the price, I think the performance of the head display is commendable. People who experience it for the first time will be amazed. Thanks again to Birdie and Lei Feng.