diy projector

to cmjsajith...I am always saying lumenlab is pioneer.they are the first of its kind in diy pj field..thats undebatable....
.

Lumenlab may be the first to sell the DIY kits. What one has to do is to assemble the kit as per the directions, even without knowing about the underlying principles. But IMO, that destroys the real DIY spirit. How ever that effort helped may to achieve their dream to have an affordable projector. To that extend it is commendable.

......I started this thread to share my build fun for those who are interested....
We also are here to support and advise, whose who are interested. But having gone through the stages, some introductory remarks/ opinion is in order. the wise guys will heed these suggestions and opinions. For example, when I started to read on the matter there were many advices that 250W MH lamp is not sufficient. But having seen the brightness of a bare lamp, I decided to try with 250W, and practically leaned the truth, at cost of Rs.3000/- Had I been heeded the advices and bought a 400W lamp, this would not happen.
So don't be furious when some one criticises you or pass some unpaletable truths. Now we all have completed building a projector, we may have different views and opinions. Even while we stick to those views, we can give meaningful advices to those follow us in choosing to build their own projector.
 
Cool buddy...cool...
You started the thread in a public domain and people are here who had done all kind of experiments and know the in and out of a diy projector and had experienced it even before you had heard about a diy projector. When I saw this thread I just went thru' to check out if there is any change in the diy design as the lumenlab is no more doing this. Also I had posted my interest in selling my diy pj parts thinking that it will be helpful if somebody wanted to try the diy design. I couldnt find anything interesting and any change in the design, but on seeing some crap false claims made by the OP its my duty to inform everyone on its genuineness as I had experience in building that. There is no point in getting ashamed or frustrated when people dont praise you or speak the truth.

It is you had claimed that by using the so called "God" 's leds and screen the brightness of more than 1000lumens is easily possible. You had only experience with a 250w hid lamp and from the google experience you are blindly claiming that its possible. Me and a bunch of my friends tried all the possible experiments, by using small arc bulbs / 7" / 5" lcd screens and couldnt get any noticeable change in brightness. BTW, a 400w osram hid we could get a decent brightness.

Another blunder that you yourself claiming was that you had used a true 7" 720p panel, but when I checked your post, it was not a true 720p and later you started it is near 720p and also another blunder that your magical controller can enable / disable the scaling, boss please understand any fixed panel will scale it to its native format irrespective of what ever you select. Now dont comeback with another blunder that your panel is not a fixed one and it can be selected in your "magical controller".

Another BS claim was the diy pjs have the quality of 1 lakh commercial pj, have you ever compared any commercial pjs, if so which one. I am damn sure that you had read only the first paragraph of all the diy projector builds and simply repeating it here. By just seeing the screen snapshots you are comparing it to the commercial projectors. Any good photographer can easily take a very eye catchy screen shot even without any screen door (another drawback of the DIY PJ).

To me, investing anything more than 15-18k for a 720p or even a 1080p diy projector is utter blunder as it comes with lot of limitations and there will not be any difference b/n a 15K or a 25K diy pj wrt the PQ. A basic commercial pj will be far better in pq compared to a 25k diypj. I had spent around 16K (1280x720 panel was expensive) and I have got a decent pq but on compared to my current pj it was miles behind. A diy pj is a starting point for anybody who want to go for a big screen with a limited budget and also it gives the fun of diy. Once you climp up the ladder which is beyond the diy pj capabilities, you need to go for commercial ones for the compactness, easy to handle and less niggles etc.

As a DIYer, I congratulate you for the build, try to get the best out of it. But dont make any kind of false claims like the end of pjs wrt pq and .....not interested in any more arguments, take it or leave it.

For reference : A screenshot from the HD movie "Cars" in my diy pj using my mobile camera
(I will try to post the same screen shot from my current projector, if the movie is still there in my archive)

PJ1.jpg
 
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off course you are very wellcome for critisizing a build.in fact that makes the output much better.that helps to find a flaw.thats very true.no problem with that.:)
and there is no competetion I am claiming with any particuler model of commercial pj.
the claims I made about hertzblaster led pjs are execellent....yes okay I am claiming it.how can u say its not possible unless u have experimented it urself.it needs money and time which hertzblaster is spending...not like u just posting comments.so he is god.

if u want to be a public figure u also spend money and time......dont just post comment.
I did not even tell anyone to that guys please dont buy commercial models.and blindly follow and buy diy kits:ohyeah:.........its completly personal choice

also if you are so inetersted to help new diyers to get parts u could easily create a new thread..right??U advertised about ur parts in this thread that too as ur first post.........really now arguing...

and you are frustrated with ur build ..not me:D..thats why u are so interested to sell it off:lol:.......any diyer will love to retain his diy stuff alongwith the most exopensive model.

u are claiming u experimented with leds and small panels.may I know the specifications led power and panel reso,lens Fl etc..........or its like ooops powerstar not powerball story

whom I am saying God of diy pj is not a god because of his builds or pj images........but beacause of his dedication towards this hobby.he maintains a site.always shares and supports diyer in diy pj field.and if you think its his business to sell diy kits..its wrong.last year hardly 7 buyers in a year including me bought parts from him that too at a less price than market rate.so offcourse he is god.

if you are so Duty proned to help and share knowledge then please spend your valuable time in such kind of a job.but you can only post comment....isnt it??
if you are duty proned why dont you stock difficult to find in india such imported diy pj parts for us indian builders........can u do it...can you spend your time and money in it.....or anything else for indian diy biulders...you cant do anything but complain....:clapping:

about the controller feuture please increase your knowledge by all means my friend.yes my controller has a setting of scaling ON/OFF.that too vertcally and horizontally different different.its a lcd tv board and proggmed to run some specific tablet screens.
and please dont critisise like women about simple words.i mentioned true 720p to discriminate with some panels come in 800X600 range and are marked 720p or semi hd......thats it.


and please... about led lights open ur mind.....its simple it throws lights in a straight direction that too in 120 degree only.so just think how less light will be wasted....unlike a bulb where light gets scatterd into every direction...
yes its a costly affair for led,its power supply,its special liquid cooled heatsink.
thats personal choice whether someone will go for it or not.everybody may not be like you who want to do it cheap way....

about 1000 lum or higher from led diy pj I will post only with a proper documented proof.wait.otherwise u wont belive

and I checked ur shot.may I ask for ur diary or like that anything in diyaudio or in any other site....just to check your parts specs...and build method..

also u mentioned any good photographer will take a diy pj shot hiding screendoors.belive me I dont have any screen door even at 3 ft.......yes its miles behind than a commercial pj in terms of overall brighness.the image almost vanishes in lit room unlike a branded one.......but not at all screendoor.its upto u to belive this or not.

if you are so experienced in diy pj field why dont u create a site for indian diy pj builders......may be we will refer u as god also.........try it

why be jeolous??
type hertzblaster in google and google wont let u type it fully.......dont belive..try it.jeolous ehhhh
 
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:ohyeah::ohyeah:feeling jeoulous about the google case..
ya I am a child...feels good to have open mind and excitment like a child.not like a boring buddha
 
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I think what Cmsajith is trying to say is DIY mostly makes sense when u have a big cost saving involved ... If good branded 720p projectors are available for 30-35k then building a DIY one for 25k does not make sense... Now if a DIY one cost say 15k then that would be a diff story... & cheaper lamps is not a good enough justification... Normally 720p projectors have 4000-6000 hours which can normally last most ppl 3-4 yrs(even more sometimes)... Then there is an option of going for a LED projector which wont even require a lamp change... All this is in the 30-40k range which seems like testing out a DIY projector for 25k odd plus ur time does not seem worth it... Now in speakers we are always seeing DIY builds & even Cmsajith Bhai is a active member of the DIY community as far as I know but over there u get huge amt of cost saving which kind of justifies investing that much time into it... Something to ponder on...

Edit
Ok while I was typing this post u edited ur post with some really lowly age related comment... Now I know y Cmsajith said he does not want to deal with ur childish comment... This is a pretty decent forum & I have met a lot of members during the 3 meets I attended... All have been very nice to get to know & always helpful... Obviously there are always points where many would disagree with the others point of view... But respecting the other persons point of view(even if u don't agree with it) is very imp... Falling to the low lvl of name calling is just sad & makes me question ur place in this small hifi community that we have... I would request u to respect other ppl's point of view just as they are respecting urs... Respecting is not the same as agreeing...
 
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Edit
Ok while I was typing this post u edited ur post with some really lowly age related comment... Now I know y Cmsajith said he does not want to deal with ur childish comment... This is a pretty decent forum & I have met a lot of members during the 3 meets I attended... All have been very nice to get to know & always helpful... Obviously there are always points where many would disagree with the others point of view... But respecting the other persons point of view(even if u don't agree with it) is very imp... Falling to the low lvl of name calling is just sad & makes me question ur place in this small hifi community that we have... I would request u to respect other ppl's point of view just as they are respecting urs... Respecting is not the same as agreeing...

yes rajadeep I edited that post I agree.but the prvs post was also edited adding childish.this word childish can be disrespectful to someone...right??
all person have different thinking platform isnt it??
at ur platform if you see a train moving right..I, standing at the opposite platform will see it moving left.we both will be correct in the perception.

and about respect I heard a very old saying..respect is nowhere sold even in million dollers....respect is sold only in exchange of respect...if you want respect u have to earn it with respect...
so I am very ashamed if I am disrespecting some person..but somehow I felt that Mr hertzblaster and his builds were being continiously being disrespected in the prvs arguments...which I simply cannot tolerate....he is the god for me...its definitly not a crime.. I think.. thinking him god and being reactive while someone disrespects him......
 
For reference : A screenshot from the HD movie "Cars" in my diy pj using my mobile camera
(I will try to post the same screen shot from my current projector, if the movie is still there in my archive)

PJ1.jpg

Using player other than vlc say MPCHC will give more detailed PQ.
 
Using player other than vlc say MPCHC will give more detailed PQ.

I had tried MPCHC and couldnt find a difference in the DIY Pj but I could find difference in my current PJ (Optoma HD20) and hence I am using it now (HD audio bitstreaming using ffdshow is another reason). Need to combine it with XBMC.

While doing the diy pj, I had compared it with some projectors in my office (Sharp / Viewsonic / Epson) which are entry level. What I observed was that the PQ was better in them (not huge), but when we go up the ladder the difference was becoming day n night even for HD content. (I am talking only about the PQ, not based on the other factors like screen door / even lighting which are related to the projector design).

The PQ which I am getting in the above picture is somewhat the best possible at a 110" 16:9 size from a diy pj (its slightly more sharper in person). Any claims for PQ similar to commercial projectors are nothing short of utter lie. To me DIY is more of fun and learning and it doesnt make any sense to spend similar to the branded ones for diy as I dont have time n money to waste and no intention of becoming a human god with followers as we have seen a hell lot of them.
 
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picture015qd.jpg


posted some screenies...i have not changed the 250 watt osram normal wala bulb yet.so no reflectopr and condenser is used now.got the small 250 watt(just like phillips cdm-t)...bulb.will install it alongwith condenser reflector...hoping to get more better picture...
 
hello friends,I live in india.I recently build a diy projector under 25k:yahoo:.
posting some pics.if it creates interest in somebody I will share theory,build method,parts sources and prices every detail.:D
I got the idea from various diy projector forums.







my wife is standing beside image.image size 80 inch diaognal.





all the image quality is not at its full potential as screen is only whitewashed wall witha blue tint.:p:p



hello sir

I am lokesh

were i can get fresnel lens and triplet lens in india (if possible specially in chennai)


i need
two Fresnel lens of focal length 220mm and 330mm respectively.

and triplet lens 330mm

i am in need of it

please help me sir.. guide me
 
you will get exact 220 and 330 fresnel at lensel pune.mail them.also 317mm triplet i think.
pleaese share your total plan( mainly budget...)
it would be easyier to suggest you best
there are good projectors at 50k inr..you can get them.
do this diy if you are completely into it.its not cheap.a good resukt which can compete with branded projectors will cost you 25k..(shipping,customs and all etc)..so think acordingly and decide acordingly.
you can see my results they are not bright as i am using normal 250 watt bulb.for best results you have to use 128 led(water cooled) from hertzblaster and other parts acordingly.
except hertzblaster they are avilable in e bvay china,optolife etc places...but price wise hertz is best and one stop shop for all parts and super after sales support...i think you also visited diyprojectorphils...you were asking to satish...correct?

so my final word is think and think then decide diy or branded...dont waste your money on cheap part diy pj...that would end up as an experiment only...no use and all your money lost....if want to go diy..use the best parts.

you can pm anand in diyprojectorphils who is also from chennai....he brought parts from diyprojectorphils....
 
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HI, really appreciate your Diy projector... have been planning myself to build one but been in a fix whether to buy one or build one. I couldnt decide on buying one coz the cost of replacement lamps always scare me.. is it really an issue ... can you please guide me on this issue ..
thanks
 
thanks for the compliment.
see diy or branded is a big question.
there are good inexpensive projectors in the market.
acer k330-38k.led no replacement of bulb
optoma hd66-47k......bulb..really great performace..4000 hours avg..now 4000 hrs is huge...weekly 3 movie..just calculate..many many years...so relax

now diy

well a nice built which can compete with branded will cost you around 30k with liquied colling 128w led powered...no lamp replament here also..
but very fine tuning is needed to match up branded quality.
so think acordingly will you do this or just buy a branded.

see my results.everything is perfect except light output.here is the challenge of diy vs branded.mine is osram 700 rs only..brandeds win here..they can easily perform in ambient light also...
but in a dark room a 30k diy led pj properly fine tuned is a winner just beacause of one reason..................PEACE OF MIND..if any part of a branded pj goes kaput..you are gone..but in this diy pj..even after very rough use..there are no sensitive parts..so no fear..
check what a led 30k diy pj can do...............Board Message

branded k330 is a good option with low budget.
if still intersted in diy...
[email protected] me
 
DIY projector parts are available in india online ebay.in The HD LCD kit is best buy to purchase & start your work immediately
 
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