Ok, I started with the idea to build a projector like a year ago and now finaly one year later i got all my stuff. here i'll present a list:

LCD: (€120)
Panel Size 15.0" (381mm)
Contrast Ratio 500:1 / 300:1 (Typical)
Display Resolution XGA 1024 x 768
Input Signal Analog, s-video*, CVBS and component video*
Response Time: (15ms / 10ms) / ( 5 ms / 20 ms) (Typical)

HQI 400W Bulb (5100K and 36000 Lumen) € 113,40

Weissglas 32x24 cm € 27,40

lensset: (€ 71,98)
- Fresnellens 320x250mm f= 220mm
- Fresnellens 320x250mm f= 330mm
- Cold mirror reflector D=70mm
- Objectief triplet f= 320mm
- Condensor 90mm

FFC Kit € 12

i also has the big lumenlab fresnels but i don't think i will use them. maybe later for a bigger screen.

total cost right now: 344,78 Euro

I hope i can build a decent projector with this stuff and have alot of fun building it.

Here are some pictures of the LCD stripping i did half a year ago. I fixed the FFC issues today and i will post those pictures tomorrow.

Here is a picture of the lcd i'm using:






the backlight is still there on this pictures but now it's gone:)

Well as promised. here are some pictures of my lcd frame and the fixed FFC Issue

oke (clickable)
[link]

I have a similar FFC issue and I can't seem to get the lcd to work with the extension. I can't seem to close the little socket that was included with the cable. I tried hot glue but the lcd only partially worked. Any suggestions?

yeah i also had the same problem. the socket is very small and it was rather difficult to get both cables straight in and closing the connector. Please watch out playing with the FFC. i read many story's bout wrong FFC-extending ending up with a non-working lcd.

Well i'm going to get the mfd in a minute. This is the current plan i have with the distances.



I hope this all will work out propperly

Long time ago that i posted here. well we worked hard @ he project last days and finaly its going to be something.

well the current status of the project is like this:


yesterday i painted the lampunit black with bbqpaint but now i heard that won't protect the wood so i have to go for another solution now.

For the cooling i also want to share my idea with u guys cause i don't ow if it will work this way. here is my idea. I want to make an open slide above the LCD so the air will be forced to stream between the lcd and the 1st fresnel. then in the back of the box i have to sucking 120mm fans like this:





Will this work out ?

I'm not an expert by any means, but I bet that will work OK. The only issue I can think of with what you're suggesting is that the fans will be sucking hot air. It's possible this will cause more wear on the fan, or maybe melt it or something.

One thing I have been noticing is alot of builds do not have metal heat guards all around the bulb (except in front of course.) The bulb in mine was hot enough to scortch the dowels that cross near it! One even was pretty well charred Tinfoil fixed this.

I agree with Hirudin.......Im not sure if the fan or even the bearings will handle that heat. When you say sucking fans is the sucking air in or sucking air out?

Also, with twin fans most forget that if one is weaker at some point (which usually happens) the other fan has to work even harder. This is especially the case with setups where fans are not "in line".....in other words they are working in different directions splitting the airflow in the box. This could also pull air down along the sides of the box and not necessarily across the bulb. Not sure if all that matters. May work with only one fan.

You also have to make sure the intake is maximized for the volume of air the fans can handle...kinda like the three bears....not enough...too little....just right!

I would really like to know how this setup works. May others have similar split airflows that work great!
After seeing the charred wood in my box I have been carefully monitoring the thing. All seems great so far.
Good Luck!

Ok after all the discussion about using wood or not i had enough of it and made a new metal lampunit. Results:







Now i still got 2 questions:

#Is it possible to cool this frame from behind (with a 120mm blowing fan) without damaging the reflector or something?

#I wanna place another 120mm fan 13cm just abobe the bulb sucking the hot air out but will the plastic fan hold the high temperature?