DIY Video Projector

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#2,461
Re: Your taking from laptop, right?

SushiMasterX said:
I don't think you will be able to use it. You will still need to buy a controller board.
I think what is attached to the panel you will buy, is just the driver board, not controller. You will still need to buy a controller!

I don't know which laptop it is from, but, I think you will definitely need to purchase another board. Could cost up to $350!

Why don't you wait?! Tell us which laptop it's from and the model # and then we can help you decide.
I hate to have you waste your money, if we could tell you to not buy it.
Please tell us more detail of that panel and then we can help you make an informed decision.
You can email me directly, if you wish.
(below, push email button)
Click to expand...

the guy says its coming out of a impaq laptop.

he doesnt know what resolutions it has.

Torisan TFT -LCM scherm MXX133022020
13.3" tft panel.

I hope that you guys can help me.

already thnx for the help.
 
#2,462
if you ask me, its probably going to a laptop panel, just like any other of the zillions you can get on e-bay. It will be lacking a true controller board, and the only way that you will be able to make it work is if you had the specific laptop. Its probably going to have a ribbon connector that normally would plug into the laptop. I can about guarantee you that it won't have a DB-15 VGA input, which is what you need.

I'd be very, very cautious.
 
#2,463
Undream said:
if you ask me, its probably going to a laptop panel, just like any other of the zillions you can get on e-bay. It will be lacking a true controller board, and the only way that you will be able to make it work is if you had the specific laptop. Its probably going to have a ribbon connector that normally would plug into the laptop. I can about guarantee you that it won't have a DB-15 VGA input, which is what you need.

I'd be very, very cautious.
Click to expand...

how can the guy check if it has a db-15 input ???
 
#2,464
hddb15m.gif


standard VGA connector, so that you could plug the LCD into a computer, or other VGA source.
 
#2,466
Hey Undream,

I noticed that you are using a metal halide setup. I am not familiar with the wiring of a ballast and capacitor to these bulbs, don't you also need an ignitor?

I Am trying to get hold of a ballast setup for a double ended metal halide lamp (which i have found, 400w, 38000) to upgrade my OHP with (just gonna shove it underneath the condensor. I'm just asking if these are easy to wire etc. I don't want to go killing myself over it ! 🙂

Does it take time to get to full lumen output? does it safety cutout if there is a prob with the bulb?

Cheers, any help appreciated
 
#2,467
misc thoughts

I've been looking into the laptop screen/controller board idea for quite a while. It seems pretty easy to get a XGA screen for under $50, but the controller boards seem to stay between $200-$300. It seems that, unless you get really lucky, the only practcal way to use a laptop screen is if your going to use a laptop as HTPC, which would be great especially if you foud an extra screen for your laptop. Imay pick up a screen just for S&G.

Also, it may be of some interest that when i tried to use a 500w halogen (home depot) bulb that i had with my OHP fresnels and lenses, the light ouptut was about half of the projector bulb--i didnt even bother putting the lcd in front. The projector bulb has a decent reflector built right in to it. id be curious to see the inside of an OHP with switchable bulbs to see how the two bulbs are aimed. it might be possible to use two at once.
 
#2,469
URGENT 🙂

Hello all 🙂

Quick question:

My friend bought a Sharp 1650 off ebay. BUT it doesn't come with the vgacable nor the remote. he wants the vga cable but buying one costs 150$.... yes... 150$ for only the cable!

Does anyone have an idea how to make these cables? and if it would be easy to make? Mainly i'm curious about the pin arrangement from one end to the other. I have the vga cable, but don't want to rip mine apart to find out how it's wired.

any specs, help, info, links, etc... would be awesome 🙂

Thanks a bunch. 🙂
 
#2,473
Re: URGENT 🙂

multiplexor said:
Hello all 🙂

Quick question:

My friend bought a Sharp 1650 off ebay. BUT it doesn't come with the vgacable nor the remote. he wants the vga cable but buying one costs 150$.... yes... 150$ for only the cable!

Does anyone have an idea how to make these cables? and if it would be easy to make? Mainly i'm curious about the pin arrangement from one end to the other. I have the vga cable, but don't want to rip mine apart to find out how it's wired.

any specs, help, info, links, etc... would be awesome 🙂

Thanks a bunch. 🙂
Click to expand...

i'm looking into this recently... i want to try and see what the options are. I have found a few things for around $10-$20. I want something that you can just buy, because its a common problem among projection panels.

I also have a site where you can get VGA extension cables CHEAP! i got a 50' HIGH quality cable for $25. It's as thick as your thumb, a really good cable. I'll post the site when i get home from work. (if you have ever tried to find long vga cables, you notice they are pricey. best buy for instance is like $80 for a 25')
 
#2,474
mycamel: Actually, I drew the curve by hand. I used string, a T square for perpendiculars, and a protractor to measure angles. I plotted about a dozen points on this curve, and then played connect the dots. I tried to make a curve that would toss every possible angle of light from the bulb towards the fresnel at an angle that would be as close as possible to it coming from a single point. (target is to make a non-point light source as point-source like as possible).

The result ends up being a curve that doesnt resemble an ellipse or a parabola. The curve could possibly be unique to my setup, so, I wont go into great detail. I can say one thing though, I end up with a rectangular shaped area, slightly larger than my fresnel, of highly focused light.

thelaw: wiring your stuff isn't bad. You'll need a multi-tap ballast that will run off of 120V, capacitor (normally comes with ballast), base (if you have a double-ended bulb, you'll need a double-ended base, if you have a screw-in socket bulb, you'll need a mogul socket, or medium socket), a power cable/w plug you dont mind cutting up (I cut up an old computer power cable), and of course, the bulb itself.

Heres a quick drawing of how its wired.

An externally hosted image should be here but it was not working when we last tested it.


multiplexor: Sharp QA series uses cables that are DB-15 on one end, and DB-25 on the other. somewhere in this thread there is a link to the pinout of the Sharp cable. It can be built easily. If you absolutely need me to, I can write you a pinout. I have the cable, and, actually I possibly can acquire a second cable manufactured by Sharp for a QA-75, if you can't build it. I would send it for a nominal fee ($8 + shipping) after testing it to make sure that it works with my QA-1750. let me know if you can't find the pinout and I'll take Mr. Fluke home with me. If you cant build it, also, let me know and maybe I can get one for you as mentioned.
 
#2,477
vga cable

sounds like your panel is set up similar to mine. not a sharp though. the cable that plugs into this port is a Y cable which allows you to connect a monitor up to the same source. i could find the info as it relates to my unit(infocus), but can't guarantee it works for yours. anyone who has this cable could figure it out with a multimeter.
 
#2,479
Undream said:
mycamel: Actually, I drew the curve by hand. I used string, a T square for perpendiculars, and a protractor to measure angles. I plotted about a dozen points on this curve, and then played connect the dots. I tried to make a curve that would toss every possible angle of light from the bulb towards the fresnel at an angle that would be as close as possible to it coming from a single point. (target is to make a non-point light source as point-source like as possible).

The result ends up being a curve that doesnt resemble an ellipse or a parabola. The curve could possibly be unique to my setup, so, I wont go into great detail. I can say one thing though, I end up with a rectangular shaped area, slightly larger than my fresnel, of highly focused light.

thelaw: wiring your stuff isn't bad. You'll need a multi-tap ballast that will run off of 120V, capacitor (normally comes with ballast), base (if you have a double-ended bulb, you'll need a double-ended base, if you have a screw-in socket bulb, you'll need a mogul socket, or medium socket), a power cable/w plug you dont mind cutting up (I cut up an old computer power cable), and of course, the bulb itself.

Heres a quick drawing of how its wired.

An externally hosted image should be here but it was not working when we last tested it.


multiplexor: Sharp QA series uses cables that are DB-15 on one end, and DB-25 on the other. somewhere in this thread there is a link to the pinout of the Sharp cable. It can be built easily. If you absolutely need me to, I can write you a pinout. I have the cable, and, actually I possibly can acquire a second cable manufactured by Sharp for a QA-75, if you can't build it. I would send it for a nominal fee ($8 + shipping) after testing it to make sure that it works with my QA-1750. let me know if you can't find the pinout and I'll take Mr. Fluke home with me. If you cant build it, also, let me know and maybe I can get one for you as mentioned.
Click to expand...

hmm I let my friend read the post. He is also interested in building the lcd panel projection thing 🙂 hehe

he says he is interested in possibly buying a cable off you for the 8$+shipping and handling...
If you can send me more information 🙂 My friend would be very interested. If you want to take this to email, my email is multiplexor@hotmail.com. If not, then i don't mind discussing it here. 😀

Thanks a bunch, this will help out my friend alot 🙂
 
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