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How To Flip Projector Screen
Most operating systems offer screen rotation options to help you install an external display. This can go very wrong when a user accidentally starts it on the home screen and flips the screen upside down. Learn how to solve problems using shortcuts or menu options.
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Hold down control, alt, and up. If that doesn’t work, go below and identify the setting you need to change to fix the rotation. My Optoma HD25 is starting to have a band-like theme in the projected image. The band changes position every day or two, sometimes swinging continuously:
I sent pictures to optoma and they suspect the motor module and stick module are faulty. Does anyone know of similar problems caused by these two modules? The problem is that if I swipe the image from left to right and top to bottom, the problem is that the image doesn’t change. It remains on the screen. So that image is independent. Does this fit the wrong motor and stick module?
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PRot3us said it looks like a hair on the lens road. Click to expand… It looks like it, but Optoma Technologies doesn’t think so. I don’t know what motor module and core module are. I wonder if people on this forum know.
Thanks @pRot3us @Zone. You are both correct. I checked with Optoma again and they explained that it was dirt on the motor module or stick module. I thought I’d make a screen that doubles as a picture when scrolling. I love how it feels like there’s no TV on while enjoying this amazing piece of art I’ve created. It was a lot of work, but I’m very happy with the results (I’m good, some are bad) even though most of it wasn’t what I expected.
Anyway, I thought I’d put together what I’ve learned and post it so that people can make more awesome screen+drawing machines.
First, you need to assemble the frame. I went to a lumber yard and got some regular unfinished lumber (40mm x 30mm) to make the inner frame. I also got the wood ready to use as the outer frame. You’ll also need an L bracket, a wood screwdriver, a staple gun, and a mounting bracket (if possible, use one of the included blades for sure).
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Now it’s time to build the inner frame. Saw the unfinished tree and created a 16×9 aspect ratio rectangle (I made the joints, but it would be easier and better to make simple joints because they don’t show anyway). I put a cross in the middle to ensure the structural integrity of this thing.
So far so good, the next step is to close the case. I started on the side where the painting was to be placed because I had material on that side and also because the material was thin enough that it would not interfere with the stretching of the material on the other side. For this I used a regular clear roll from IKEA. When cutting, it is important to check that there are no sharp corners that can tear the shade (since I made the joints, this one joint was not aligned correctly, I had to smooth it out). You should have a lot of material, so you need to stretch at least 20 cm on each side.
The stretching process requires a lot of work, as the fabric must be stretched tightly to avoid the unpleasant effects of bubbles. You start by placing the fabric in the center of the frame, folding it back, and placing something outside the frame in the middle of each side. Don’t put the staples too “low” or you’ll have a hard time removing the excess fabric when you’re done. The first one is the hardest and needs to be pulled and tightened several times before it looks good. At this stage, it doesn’t matter if it looks cool. You can place three or four staples around each primary staple and tighten until satisfied. Always alternating sides reduces the risk of the fabric fraying, causing blisters.
Once you’re satisfied with the initial cross, you’ll work your way towards the corner, in a square. For best results, switch sides and bend when cornering. A word of warning: even though I’ve stretched the whole thing four or five times, it still has small wrinkles/bubbles in the frame (especially in the morning), but if the light is right, I’m looking at 170 degrees. Angle. I was deeply engrossed in these things, but eventually decided that enough was enough and I might as well not watch the movie anyway…
Papan Putih Tulis Dengan Projector Screen Papan Tulis / Papan Flip Chart Selangor, Malaysia, Kuala Lumpur (kl), Petaling Jaya (pj) Pembekal, Penjual
Then it’s time to do the opposite. Try not to stain the stained side during this process, as it will be difficult to clean. The material I used for this is called Barracuda, and it’s a plastic sheet that looks like the stuff they use to print billboards. It’s thick, at least a few millimeters, so it’s harder than stretching, and you’ll need a mate to help you. Other than that, the process is pretty much the same. Be sure to remove excess fabric from the other side with a pair of sharp scissors (box cutters are too sharp for good results).
Before placing the outer frame, you should paint the edges so that the part where the outer frame meets the picture looks as good as possible. But to do that you need to know what you’re painting. So you start by finding good intentions. The only thing to remember at this stage is to choose an image that only shows two colors. This means avoiding images with lots of clutter and small details. I knew I wanted to make the film the theme and I looked at a lot of Bogart images, unfortunately almost all of them were too messy to work with, so I ended up with Steve McQueen’s best thing walking around in his pants. Scenes from Bullitt.
So we turn to Gimp (I’m sure a few other applications do as well, but the examples are in Gimp). First we convert the image to grayscale (Image->Mode->Grayscale), then we remove the details we’re not interested in, which makes the next step a bit easier. Next step is the Threshold Tool (Tools->Color Tools->Threshold) and fine-tune the detail until you’re satisfied.
Before moving on to the next step, we need to make sure that the white parts of the image are transparent and not white (which they probably aren’t). The easiest way is to go back to RGB, add a background layer and fill it with another color and make sure you have an alpha channel (Layer->Transparency->Alpha Channel). Then use the tool (actually “Fuzzy Select” is the correct name) and start selecting all the white parts and delete them (zoom out to make them smaller).
Projection Screen Images
If the image is small, now is a good time to resize it before applying the oil filter (Filter->Art->Oil). Before oiling, the image was very “quick”, but oiling takes care of that and the end result looks really professional.
Now create an image for the hard part. I was inspired by this old poster of different shades of orange, so I divided the image into three vertical areas. I played with many ideas before settling on four inches
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