Let's start off with some Wikipedia: HID =
High-intensity discharge lampVarieties of HID lamp include:- Metal halide (MH) lamps
- Ceramic MH lamps
- High-pressure and low-pressure sodium vapor lamps
- xenon short-arc lamps
Nearly all of us use HID lamps.
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Below is a little tidbit I give to newcomers:
The best place to start is
The Lumenlab PRO DIY Projector Guide V.3.
Once you have a grasp of the basics, you might want to peruse the pinned topics at the top of the
Beginner's Forum. This is also where you should go to create your own threads when you have questions. When you start your build, you can
create your own PLOG to chart your progress and to ask questions about your particular build.
Then you can move on to the pinned topics of the
DIY Video Projector Design forum.
When you're ready, you'll need to decide what parts (LCD, Fresnels and triplet) you'll need. To do that, you can use the handy
FocalCalc. FocalCalc will help you determine your enclosure measurements and will let you experiment with different parts before buying anything. This will also tell you how far from the screen your projector needs to be (throw distance).
I've found that
Google Sketchup is handy to use to design and visualize what your projector will look like. And best of all, there's a free version you can use.
A lot of the questions you might have probably have already been asked and answered several times. While most of us do not mind answering some of the same questions repeatedly, you might get more satisfaction in finding the answers yourself. Unfortunately, the built-in Search feature on most of these online forums is quite limited in what it can do. You might find it easier to search using Google using the "site" parameter. Below is an example:
Google search:
site:lumenlab.com +"12.1" projector +plansYou can find other parameters by clicking the Google links in my signature.
You might run across a "quirk" when searching using Google, however. If you notice the thread looking "wonky" like
this image, simply go up the the top right corner of the thread and click on
Options and then
Switch to: Standard.
I hope this gets you started on the road to your new obsession and I look forward to seeing your progress.
Welcome to the obsession!