RC India

RC Models => Multirotors => Topic started by: satyagupta on August 10, 2013, 09:18:31 AM



Title: How to Make Cheap FPV Goggles
Post by: satyagupta on August 10, 2013, 09:18:31 AM
https://www.youtube.com/watch?v=ja79vmdi0is

EDIT: argghhh how do you embed the video?? this used to work.. :banghead: :banghead: :banghead:


Title: Re: How to Make Cheap FPV Goggles
Post by: atulrajguru9 on August 30, 2013, 01:47:02 AM
Just remove s from HTTPS

http://www.youtube.com/watch?v=ja79vmdi0is


Title: Re: How to Make Cheap FPV Goggles
Post by: satyagupta on August 30, 2013, 07:54:46 AM
oh thanks Atul :thumbsup: :hatsoff:


Title: Re: How to Make Cheap FPV Goggles
Post by: girishsarwal on August 30, 2013, 11:01:10 AM
Satya/Atul, check this...

http://www.youtube.com/watch?v=2H_PvU82o7A

My ski goggles are on way. I am wondering if one can easily use swimming goggles as well, as they are easily available in any sports shop.

PS: the music in the bg is equally interesting. Will post build log when I get the ski goggles. I will need to do some mods to the ski goggles for ventilation to bear Delhi's heat ;)


Title: Re: How to Make Cheap FPV Goggles
Post by: satyagupta on August 30, 2013, 11:37:43 AM
Thats good stuff, what is the material he is using to make the box :headscratch:


Title: Re: How to Make Cheap FPV Goggles
Post by: girishsarwal on August 30, 2013, 12:48:46 PM
packaging thermocole perhaps. I was also thinking of using sunboard, but it will be heavy and thermocole will give tighter fit at corners


Title: Re: How to Make Cheap FPV Goggles
Post by: VC on August 30, 2013, 03:01:45 PM
AFAIK, Pravesh uses one of this DIY FPV Glasses and they work fine.


Title: Re: How to Make Cheap FPV Goggles
Post by: pravesh736 on August 30, 2013, 07:28:14 PM
The simplest way to making them is to use
*5 inch(best balance of quality,availability and price) or smaller monitor(480p min) not 7 inch(its too bulky) and
*3x or lower magnification fresnel lens cut to required dimensions,
*elastic to hold it, foam(to make it comfortable at contact points with your face)
put the monitor inside the box and place lens 2-3 inches ahead of the monitor towards your eyes. keep some gap between lens and eyes(3-4 inch).  ziptie/stick/glue them together and done.
resulting picture is big and 'sharper' than fatsharks (i tried it side by side, i have fatsharks too). both work great, but HMDs downsides are weight, size, bluescreen if using non static monitors.


Title: Re: How to Make Cheap FPV Goggles
Post by: atulrajguru9 on August 30, 2013, 07:41:21 PM
That is very cool girish!

Pravesh, i have 2 part question

a) where can i find '3x or lower magnification fresnel lens' 
&
b) how to cut them? can optician do the cutting ?

Thank you,
Atul


Title: Re: How to Make Cheap FPV Goggles
Post by: pravesh736 on August 30, 2013, 08:20:26 PM
Hi Atul,
a)ebay. i have to thank VC sir for mine. :)
b)scissors. they are made of some kind plastic.


Title: Re: How to Make Cheap FPV Goggles
Post by: atulrajguru9 on August 30, 2013, 08:23:36 PM
Wow, that's cool. thank you pravesh.

VC sir will you be able to provide the link from where you brought the lens?

Thank you,
Atul


Title: Re: How to Make Cheap FPV Goggles
Post by: VC on August 31, 2013, 01:27:05 AM
Ebay - just type 'fresnel' in the search box and press enter............


Title: Re: How to Make Cheap FPV Goggles
Post by: Dharmik on September 02, 2013, 07:17:09 PM
Good update Satya bro. I have 4.3 inch lcd screen and off road goggles with me. Let me try if i can make one as shown in the video.


Title: Re: How to Make Cheap FPV Goggles
Post by: pravesh736 on September 02, 2013, 08:15:19 PM
what ever you make, use fresnel lens, thats the main trick. :) . its like with and without simonk(just an example). those dirt bike glasses will work.


Title: Re: How to Make Cheap FPV Goggles
Post by: Dharmik on September 02, 2013, 08:35:33 PM
Pravesh bro i have fresnal lens as well. In the video above  guy made googles w/o fresnal lens. Is there any specific distance required between screen and eyes?


Title: Re: How to Make Cheap FPV Goggles
Post by: pravesh736 on September 02, 2013, 10:32:27 PM
if he made it without the lens, he would have remade by now with a fresnel lens after his first session. lol
total distance of 6-8 inches is fine(eye and monitor front) with the lens in between where ever you get best focus


Title: Re: How to Make Cheap FPV Goggles
Post by: girishsarwal on September 03, 2013, 11:55:47 AM
I have been able to find a local stationery shop who stocks magnifier sheets, which I believe is a Fresnel lens, will check when I goto him in about an hour. Asking for 200 rs. for an A4 size :D...

I am going to add on the audio output using earphones and this is going to double up as my private home theater when have to watch Ancient Aliens and the wife complains :D