159.99$, Eachine EV100 New FPV goggles Fatshark's killer? - RC Groups
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Jul 26, 2017, 05:53 AM
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SeByDocKy's Avatar
Mini-Review

159.99$, Eachine EV100 New FPV goggles Fatshark's killer?





INTRODUCTION

The Eachine EV100 is announced/advertized to be a Fatshark FPV goggles killer at least in term of price. This binocular goggle is sold close three more cheaper than Fatshark models. To obtain such low prices the main trick for Eachine is to use builtin screens with smaller FOV: 28 degrees only where competitors offers a minimum of 30-32 degrees. No DVR as well but the EV100 is announced to have IPD and focus ajustements available for each eye. Builtin screens offer a resolution of 720x540. The 5.8G receiver welcomes two antennas and can trigger 72 different channels. I received a pre-release version with very little difference with the final product. I will highlight them of course. Let's discover ths new model


BOX CONTENT



+ 1 x Eachine EV100
+ 1 x 1000mAh 2S LiPo
+ 2 x 5.8G linear antenna
+ 1 x Velcro band
+ 1 x USB to microUSB cable
+ 1 x cleaning tissus
+ 1 x Instruction manual (Chinese/English)

As you can see, not a lof of accessories .... Since the EV100 is able to display an HDMI source via the 3.5mm jack port, I regret the absence of such specialized cable in the bundle. More the instruction manual is printed on a super small paper's size .....


OVERVIEW

The Eachine EV100 is on the paper a potential competitor of Fatshark, skyzone, aomway goggles in the sens we have here some features usually only available for 350+USD model. Here is the complet list of the technical paremeters. Impressive to find some 720x540 screens here .... but the real question is how large/big they are ? and what will be the associated Field Of View (FOV).... Only 28 degrees. One will say that the Aomway are 32 degrees and even some Fatshark 30 degrees.... so 28 degrees in theory should be not a big deal.




As screen settings, we can ajust only the brightness and the contrast via the top joystick button but the more important is the ajustement of both the IPD (x-axis) and the focal distance (y-axis) for mypia < 400 degrees and hyperopia < 100degrees... The last degree of freedom ajustement is just impressive for a so "cheap" product. A total of 72CH grouped into 9 different bands is supported by the receiver part. Notice the presence of two RP-SMA antenna connector ... so the presence of diversity seems to be here... Of course, only by disassembling the goggles will answer to this question. No builtin DVR..... so you will need to connect an external module via the AVout located on the right side.

The general build quality is good with a good plastic. In hands, the EV100 looks super light, a good point for long FPV flight session, at least for the neck muscles.... (not sure for the eyes )




Installed on the EV100, a clipsable facial mask covered by a large foam element itself attached via a velcro band to the mask.



In pratice the foam part is limiting the horizontal opening to 115mm ... so it's narrow and not adapted for large head. The trick is to cut/reduce the height of the facial foam at last with a factor 2.




Without mask, the general opening is much more wide (> 140mm) and compatible with almost any head. The headstrap is good and can simple installed/removed thanks to the central hole of the latteral clipsing system.




-Front view


Not a ton of buttons/port on the frontal/upper part. As expected for such price, no frontal camera too (as we can find for some Advanced Skyzone model). We can find just a basic Eachine Logo printed front






-Rear view

Here, no possibility out of the box to install a diopter system since it's possible to set the focal distance independently. Anyway for astigmatia correction, this possibility would have been a big plus.




Centrally there is the hole fan






-Side view

The left side welcome the 3.5mm jack earphone port and a microUSB port. This latter is used to power the EV100 via an +5V USB power source, a powerbank for example. The port can be used also to flash a new firmare too.




The right side shows the main DC input port and another 3.5mm 4 positions jack port used by default as AVout. If long press /click more than 12s the central joystick button, you turn off the RF module and this port is transformed into an AVin to import an CVBS source of course but also, via a special cable, should also import an HDMI source. Unfortunatly this cable is provided.. You can assemble these twi products to input an HDMI source:

i) https://www.banggood.com/1_5M-5Ft-HDMI-Male-to-3-RCA-Video-Audio-AV-Cable-Cord-Adapter-for-TV-DVD-1080P-PS3-Xbox-p-1049322.html
ii) https://www.banggood.com/3_5mm-Mini-AV-Male-To-3-RCA-Female-Audio-Video-Cable-Stereo-Jack-Adapter-Cord-p-1111434.html





-Upper view

We can find from left to right: up/down Arrow buttons, the fan vent and the mini-joystick (four directions + central click).





The up/down arrows buttons are used to increase/decrease the current Vfreq Inside the selected Vband if short pressed. If pressed more than 3s, you can cycle between the 9 supported Vband. If long pressed them togather than short press for example the up Arrow you can turn off/on the OSD informations displayed.

For the joystick, the up & down direction increases/decreases respectively the brightness. The right & left directions are for the contrast settings. Beeps are emitted when you press in one of the four directions but I regret deeply there is no OSD indication of the current brightness/contrast value. The ajustement seems to be divided into 30 intervals.

-Bottom view

Probably the most interesting part of the EV100. First of all, the noze section is compatible with large noze It's a good news. But the more interesting is the possibility to ajust independently for each eye the IPD and the focal distance !!!!



The horizontal slider set the IPD between 58-68mm... On can regret that range of IPD setting is a bit narrow, especially the upper bound. Something around 72mm... would have been great. The other button is a small Wheel tuning the lens distance to your eyes... and in practice the is super efficient to obtain a perfect focusing. My eyes start to be old, and got a small astigmatia... and I was able to obtain a crisp image. A very important point for those we were correction glasses. In general with Goggles Mask, you need to mod them in order to install between the Fresnel lens and your eyes a third party correction glasses. Here with the EV100. for moderate mypia and hyperopia, just use these wheels to set the focus!!! That's great




This tiny button is the on/off for the Fan. With the final EV100 product, is printed "on/off". Notice than the fan is super quiet !!!! Another good point



-Weight







222g in total it's at least 40-50g lighter than other competitors




-Battery

A basic 1000mAh 2S LiPo with DC connector. So it's easy to find other battery with larger capacity. With the provided model, you can use it during 30-40min before to hear the LVC alarm buzzer.



A small button when pressed will show the current emainung charge of the battery with 4 different blue light (25%,50%,75%,100%)

The battery must be recharged via the microUSB port



Don't use the incomplete balancer plug. This latter must be use with the upcoming dedicaced DVR module.




-Screen display & OSD information



As you can see, no Diopter bay available out of the box.... so for correction > - 4.... you will need to mod your EV100




There is already a video showing such mod (Courtesy Albert King)

Eachine EV100 Goggle Diopter Mod 👓 (5 min 17 sec)




A large green OSD shows the current selected Band, the #CH Inside the band, the Vfreq expressed in Mhz. For the final version, the battery level is also displayed in the top right. As written previously,, these OSD information can be turned off....



If you long click the joystick more than 6S, you run the autoscan procedure where all the 72CH will be visited and the channel with the stronger RSSI will be picked up. During this scanning, only a beep is emitted when going from a channel to another one. I regret the RSSI is not displayed for each channel as RSSI plot vs channels. Maybe it can be added by a future firmware update...






UNBOXING, ANALYSIS AND TESTING

Ok after the first contact where I was impressed by the lightweight of the goggles, I plugged the battery and no sign of activity .... In fact the battery is shipped almost "flat" in term of voltage .... So can be partially damaged already even before to use it. It's a known problem and this fact will be solved in the next EV100 batch according to my BG contact. So after charging the batttery for a while (You need to press on the button to check the current level of charge, no progression bar animation available in the battery), as soon as you plug the DC connector, the screen turn on .... and whaoooahhhhh it's tiny !!!!! super tiny.... It look almost twicer narrowrer than the aomway in term immersion feeling ... A side by side comparaison with the Aomway Commander




Strange coz the Aomway are only 32 degrees for the FOV so should be just a lot more larger than the EV100. In practice it's not the case ..... I really not sure we have 28 degrees FOV (even in diagonal)... for me look more closer to 20... .... So it's a potentially problematic for close range low riding FPV when a lot of trees and branches. Small details can't be seen perfectly.... In another hand, the quality of the screen are good, really not bad at all for a such price model. Better than my former Boscam GS922 in term of precision, color rendition but there are still far of the quality of the Skyzone V02 and the Aomway comannder ... especially in term of black intensity.....


Eachine EV100 FPV goggles Unboxing analysis and testing (Courtesy Banggood) (32 min 10 sec)


In term of RF sensibility .... we have something in the average..... No micracle with these basic RP-SMA linear antennas. You will need to provide some much more efficient.

When disassembling the EV100, we can notice the presence of one unique receiver chip but feed with the two antennas. Can we call this system a real diversity system ? no ... why..... A diversity system will pick up the two RSSI values of two independant VRX to send them in a smart demultiplexeur taking the most powerfull/higher RSSI input. Here with the EV100, we have as inputs the two RF signals, not their respective RSSI.... It means that another integration is done. The best would be to "add/sum up" the two analog FM signal to have a stronger one. But it's not an easy task for HF signals.... In practice, each antenna collects an FM signal... so basically a sinusoid where the instantaneous frequency is modulated by the data signal... If there is a small delay/phase between the two received signal.... the sum not only won't be stronger than each individual one but can be destructive.... It's proportional of cos(phi) where phi is the dephasage betwwen both. As you interstood, I really hope the two signal merging is done efficiently.... at least they need to estimate this phi value correctly... In practice, it's often by a PLL circuit. To resume, the EV100 doesn't have a real diversirty system but an hybrid circuit offering better results(as soon as phi is well estimated): mono-antenna<EV100<diversity. Some users already attemps to swap the current VRX module for a real diversity one.... Clearly if a future EV100 upgraded will appear, I hope true diversity will be here.


Another important test is the level of cropping introduced by the EV100. I will use the maximum bounds we can have theoritically obtained with betaflight OSD. In practice, I never met a VRX able to display it perfectly either for NTSC or PAL formats. The Aomway commander are close to that bounds ... but not yet completly. The best I have are the Boscoma GS922. For my testing, I placed four OSD elements in each for corners.

Here is the theorical PAL layout



and here is the layout I estimated from the EV100 until I can see clearly the four elements. As you can no massive cropping but up and bottom parts are slihgtly cropped for few lines (~10-20 max). Nothing really catastrophic, but you have to be aware, especially for machines where OSD settings are not available.



The same for the NTC system. The theoric one:



And the estimated one for the EV100...



Here seems the level of bottom cropping is more ore less the same than for NTSC but the upper zone is less impacted. To resume... PAL suffers less than NTSC in term of cropping... but the general level is accaptable... In practice, especially for PAL source, there is no big difference between the aomway and the EV100.


Anoter point, I observed at least with my pre-release version about the AVout used with a DVR. All recordings were more dark as we can see Inside the goggles....


EV100 AVout test recorded with the BlackBox D1M (0 min 25 sec)


Probably an impedance matching problem ... at least in the pre-release circuit. According to some reports, the final version don't suffer of such problem. That's good


CONCLUSIONS

A very interesting first Eachine FPV goggles.... with a lot of interesting features already introduced. What I really like are the quality of the screen the distance lens ajustement system. I also approciate the lightweight of the goggles... and the different connectivity included. Are they a Fatshark killer ? Clearly not...... With such small FOV... it's not as confortable to fly acrostyle FPV like with the Fatshark/skyzone/aomway one. So Is it hard to fly with EV100 ? no ... but less confortable. More ... If you don't have any specific problem with your eyes, a good FPV mask with larger FOV can be maybe more interesting. For example the EV800D with an excellent builtin DVR. If you more problem with eye correction, the EV100 will probably fit your view without any extra modding required with mask... but your eyes with be more tired with the limited FOV.... No free lunch. I will rank the EV100 with an average of 12/20 ( with 17 for the Skyzone/aomway I own). In a future revision of the EV100, I think larger screen will be introduce, probably a builtin DVR ... but the price will be closer to 300USD. The EV100 was a super deal when sold at 100 USD... Now at 150 it's still ok ... but the price is just in the border line between cheaper mask and more expensive efficient goggles ....


PROS

+ Good 720x540 builtin screens
+ IPD ajustement
+ Focus ajustement
+ 5.8G 72CH receiver
+ Lightweight
+ Basic OSD informations (Vfreq, battery)
+ Quiet fog fan remover
+ Can be powered by a +5V source via the microUSB port
+ Competitive price

CONS

- Small FOV: 28 degrees but look even smaller
- Small amount of cropping, especially in NTSC (both up & bottom parts are cropped a bit)
- Potential black bars/horizontal distortion (fixed from second batch)
- Some black sporadic black screen
- No real diversity system
- No brightness/contrast OSD info
- Basic band scanning OSD info
- Potential AVout dark DVR recording (fixed in the final version)
- Battery shipped almost flat
- Small horizontal facial opening due to the large foam
- Absence of a HDMI to AVin cable in the bundle
- No diopter tray (for more severe visual correction)


This FPV goggles have been courtesy provided by Banggood in order to make a fair and not biased review. I would like to thank them for this attitude.
You can find it actually for 160USD at https://www.banggood.com/Eachine-EV100-720540-5_8G-72CH-FPV-Goggles-With-Dual-Antennas-Fan-7_4V-1000mAh-Battery-p-1182469.html
Last edited by SeByDocKy; Oct 18, 2017 at 03:06 AM.
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Jul 26, 2017, 05:53 AM
Registered User
SeByDocKy's Avatar
Black bars/Horizontal distortion fix

http://fishpepper.de/2017/10/11/each...al-background/

https://www.rcgroups.com/forums/show...postcount=2318
Last edited by SeByDocKy; Oct 18, 2017 at 03:05 AM.
Jul 26, 2017, 05:53 AM
Registered User
BGjim's Avatar
* The battery problem only appears on 6 beta version samples due to the limit time.It wont boom when overcharge.
The factory didn't match capacity and voltage for those 6 betteries.So this causes voltage difference after charging.

Except for the 6 beta version samples, we promise there is no such problem on the public version.
Feel free to use it.


* We do recommended not to charge the battery via balance port or DC port.
That balance port is designed for power supply for external DVR
DC port is for discharging.
You can charge via micro-usb B port.



--------------
Free Sample Activities

1.Surmise the features of this goggles

Here are the guys who are close to the specs before release.
1.rasqba
2.mlilasic
3.SeByDocKy
4.ricardovasc
5.Sumfear


2.Think up the new features and suggestions
Think up the ideas after your brainstorming.
You will get this for free or free samples of the next generation once Eachine catches your suggestions and ideas.
Quota:unlimited

1.RICHARDELLIS


View it on banggood:https://www.banggood.com/Eachine-EV100-720540-5_8G-72CH-FPV-Goggles-With-Dual-Antennas-Fan-7_4V-1000mAh-Battery-p-1182469.html
Last edited by BGjim; Sep 14, 2017 at 11:02 PM.
Jul 26, 2017, 06:28 AM
Registered User
My guess is it comes with diversity, a battery(on the side in the picture), and even a fan(but maybe that's just a vent hole). I know for the price they can't be feature rich, but if it has features close to the vr007, or (I hope) like the vrd2's, then I'll buy a pair.. I would love to review them.
Jul 26, 2017, 06:38 AM
Registered User
I think it will come with diversity receiver, a fan, foam face plate, VIDEO IN, AUDIO OUT, bettery level indicator, automatic channel scan, adjustable IPD, OSD (I'm not sure about those last two ) there will be 3 color versions, would be cool if it had DVR too.

My suggestions is: for the diversity receiver include a patch antenna, like in VR-D2, also adding a spectrum analyzer would be really awesome.

Awesome product!
Jul 26, 2017, 06:45 AM
Fan of just about anything RC
SoloProFan's Avatar
High resolution, diversity, DVR, good wearing comfort, ventilation. Some things I think/hope these goggles will have.

It would be interesting to compare these to the single screen goggles that I've been using and testing so far.
Jul 26, 2017, 07:08 AM
aka RCFlyer85
Irock1985's Avatar
Quote:
Originally Posted by BGjim
Free Sample Activities

1.Surmise the features of this goggles
We will select 5 guys who are close to the the answers
Dual 4K screens, Liquid cooled, 50 Km range, powered by Unicorn tears????

But honestly

Specs other than screen size I suspect will be similar to EV800D's with a 1200 mah external lipo

Quote:
Originally Posted by BGjim
2.Think up the new features and suggestions
Think up the ideas after your brainstorming.
You will get this for free or free samples of the next generation once Eachine catches your suggestions and ideas.
Quota:unlimited
Suggestions for Goggles in general ... Add a microphone to the Goggles for voice overs/ narration of flight in DVR
Jul 26, 2017, 07:43 AM
Registered User
SeByDocKy's Avatar
Quote:
Originally Posted by irock1985
suggestions for goggles in general ... Add a microphone to the goggles for voice overs/ narration of flight in dvr
+ 1000000 !!!!
Latest blog entry: Youbi XV-130 130MM FPV Racer
Jul 26, 2017, 07:45 AM
FPV addict
mlilasic's Avatar
1.Surmise the features of this goggles
  • 2 way diversity with 2 lin. pol. antenna provided
  • two separate LCD screens with WVGA resolution
  • FOV: from 30 to 35 degrees
  • auto scan of CH&Bands
  • rechargeable battery
  • AV in
  • AV out
  • earphone out
  • Adjustable Interpupillary and Diopter for eyes
  • Adjustable brightness and contrast
  • NTSC/PAL video format supported



2.Think up the new features and suggestions

  • DVR
  • HDMI in
  • built in FAN
  • support for 3D video
  • RF Analyzer
  • one lin. pol. antenna and other directional antenna provided (there is no point in diversity with two antennas od same kind)
  • dual axis head tracking (gyro, inertial and compass)
  • OSD or outer LCD/OLED display of receiver CH&Band and other settings - something like this:



Last edited by mlilasic; Jul 27, 2017 at 04:58 AM.
Jul 26, 2017, 07:52 AM
Registered User
SeByDocKy's Avatar
For me

- 32degrees FOVminimum but not too large too (< 42). 34-36 should be a good value me
- 800x600 screen with super black level (> 1000 cd/m2)
- Screen settings ajustement (brightness, contrast, color)
- -95 dBm diveristy receiver
- AVin, Avout, HDMIin, earphone in
- DVR able to record perfectly @30 FPS without cropping in D1 NTSC (720x480) and D1 PAL (720 x 576) with automatic and manual selection !!!. With high bit rate recording (mp4 format ...)
- Autosave file even with a powerdisconnexion
- microUSB port (to export recorded files)
- Fog fan
- Easy facial sponge replacement
- Headtracker plug + extension module
- 72CH
- Band scanner + manual Vfreq selection
- microUSB
- OSD informations : LiPo voltage in Volt and %, current Vband, Vfreq and freq in Mhz, current RF channel (A,B,diversity)
- Buzzer at low voltage
- IPD ajustement (60-75mm)
Last edited by SeByDocKy; Jul 26, 2017 at 08:00 AM.
Jul 26, 2017, 07:54 AM
throw new IOPilotException();
IceWind's Avatar
Well seems to have diversity and cooling/ventilation fan.
Maybe built-in DVR as well, other than that all is a mystery.

Please make them with a decent FoV, 45 or above, with that yes it would kill the fatshark.
The market at the moment is lacking that, competition that brings a decent FoV.

A plus would be to accept the existing dominator modules, like LaForge, FuriousD, RealAcc and others...
Jul 26, 2017, 08:04 AM
Registered User
I think the Eachine 2017 FPV goggle brings a diversity receiver with 48CH, 854x480 WVGA screens, HDMI input, earphone in, FOV with 30, switchable 16:9 and 4:3 aspect ratio, Equip with fan, foam face plate, a 7.2V battery, 2 x linear antennas, automatic channel scan with OSD, IPD ajustement (60-68mm)
Jul 26, 2017, 08:07 AM
Dutch RC Reviewer
Dutch 79's Avatar
Nice goggles, Looking forward to them.
SeByDocKy you don't count in the competition :P you're too close to Eachine for this,.
Jul 26, 2017, 08:22 AM
Registered User
I think it will have 25 degree FOV, 320 X 240 resolution and some kinda antenna diversity instead of a real thing.
Jul 26, 2017, 08:59 AM
Registered User
Evan D's Avatar
My thoughts...

Has to be comfortable to wear and light weight.
Video has to be clear and crisp.
Adjustable IPD.
Has to have excellent range.

Nice to have;
OSD band, channel and voltage or voltage indicator.
Adjustable contrast, brightness and color.
Both a scan and manual band and channel setting.
Fan.

Removable face plate. With my F640 glasses I have found that it's nice to be able to see below them for walking and take off. Either that or a forward camera built into the goggles.

Easy to do-

Put some stickers in the box so people can put them on the front of the goggles.. Some goofy eyes, scars, something fun to make them personal.

I don't care about a DVR but I know others would want it. Maybe make it optional?
I don't like the battery on the side like the Chubbysharks. Build it in or on the band in back of the head.
Save your money and don't give us the linear antennas.
Last edited by Evan D; Jul 26, 2017 at 09:09 AM.


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