My ProView 15.4" 1280x800 HD project...

Status
Not open for further replies.
Jump to Latest
#62
I did find a bunch of tubes... but 1 project at a time 😉

It was amazing the amount of electronics stuff he had there. Lots of old Heath kits for radios, TVs and RF generators (no projector kits thou 😀 ). Unfortunatly, my grandfather had a bad stroke when I was very young and is no longer able to share that knowlege.

I was able to find just about everything I should need except LED backlit switches. Radio shack here I come...

The only thing important that I still cant find is a proper spherical reflector. Anyone else had any luck in that department???
 
#63
There is a site that sells perfect sphere "mixing bowls" that apparently work very well for diy. I have seen a post on it, but I can't remember where, and I cant remember where the site is. Do a search. BTW, they are not cheap...not expensive, but not $5 either.
 
#65
jdevo2004 said:
There is a site that sells perfect sphere "mixing bowls" that apparently work very well for diy. I have seen a post on it, but I can't remember where, and I cant remember where the site is. Do a search. BTW, they are not cheap...not expensive, but not $5 either.
Click to expand...

If all else fails I may go that route, but I'm hoping to find a nice spherical concave FS mirror. 80-100mm dia 25-35mm fl would be ideal for me.

spamh8r said:
Inkoq... I'm a fellow Louisvillian planning to build a projector with this same panel... I'd love to see your progress and help in any way I can. Thanks!
Click to expand...

Sounds good. Keep looking here for updates and feel free to ask questions and post comments.
 
#66
I partially striped my LCD to get measurements of the PCBs and wires lengths so I could start on the LCD bracket. I took several pics but they came out very poor so I'll just attach one.

I managed to get it back together (and still working 😉 ) so I can still use it as a TV until my optics ship. I've started the bracket and will post more pics once its complete.

:devilr: It is underway! :devilr:
 

Attachments

  • pic4.jpg
    pic4.jpg
    86.2 KB · Views: 1,040
#68
simple

f ratio = focal length / aperature

So a 76.2 mm diameter f 10 mirror has a focal length of 762 mm, and therefore a radius of 1524 mm. This is a telescope mirror, not a lamp reflector!

Lamp reflectors have a radius somewhere around 50 mm and thus f / = around 0.3
 
#69
Hello, I'm coming from French Website called Allinbox, I would like to know something:

Does the Proview PS576W deportable???? (you can remove all electronics card to sides that allows to use all the panel)

I'm moving on a HD projet with this monitor, but I need to buy it before, and 280$ could be expensive for a monitor which could work with our project.

Thank in advance.

Ibanana
 
#72
Hezz said:
Inkog,

If possible can you post the dimensions of the LCD and control cards for this LCD.

Hezz
Click to expand...


Sure thing, but it will have to wait until I get home tomorrow afternoon.



I ordered the 400w kit and a extra bulb from LL, and it should be here by next weekend. Alan at DIYPC emailed and states that the fresnels are still on track for 3/8. So if all goes well, I should have a working PJ in the next few weeks. 😀

I ordered 2 of the Ikea napkin reflectors to use until I can source a good spherical reflector. This should at least help some, and for 6 bucks I figured they were a good investment until something better arrises.
 
#76
more kitchen reflectors

These quiche molds are perfect spheres:

http://www.dr.ca/e_pcercle.html

Look at the "Stainless steel half sphere moulds" section. They have many different sizes, so you can find one to fit your lamp. All are very sturdy mirror-finish stainless steel and have a perfect spherical shape if you cut an inch or so off the top.

Shipping to the US (and maybe to anywhere outside Canada) is expensive, so it would be good to find some local partners so you can buy more than one.

I cut one and got it silver-plated to increase the reflectivity, but I think they are as good as stainless steel gets just as they come.
 
#77
I am building a projector with this panel as well, with a design inspired by the 'bakery' projector. I am using solid woods for the sides and front, and 1mm copper sheeting wrapped around the bottom, top, and back.

While I hate to take this thread further off topic with reflector talk, I am quite interested in what others think about reducing heat by attaching a large CPU heatsink on the back of the reflector venting out directly.

This copper skin along with the HS on the rear of the reflector should dissipate heat much better than a MDF enclosure and allow me to run perhaps just one 120mm fan on the bottom (ceiling mounting the fan) and a vent on top. The question is, how to attach the heatsink to the back of the reflector? How well does copper weld when attaching to SS?

Thanks in advance all... will keep you posted as things develop.
 
#78
Hezz,

Sorry bro, I got tied up last night. I'll do my best to post those dimensions for you tonight if you still need them.


Guy Grotke,

Thanks for the link. I have no idea what the diameter of the ikea reflector is so it may very well be useless to me. If that is the case the 6cm quiche mold is looking very nice.


spamh8r,

I was planning on making 'fins' with increasingly smaller holes drilled in the center and compressing the unit together with nuts and bolts using the ever popular fan grill to hold the reflector. This would make a good heat sink I'm thinking. You could also apply some thermal paste for good measure. I also planned on using the 'fins' inside my light engine with many small holes to allow airflow, but provide a much greater surface area for the transmission of heat into the airflow. I think this will be necessary due to me using a 400w light 140mm away from my fresnels. I'll post pics of my idea later.
 
Status
Not open for further replies.
Top Bottom