TIL: How to build a See-Through Holographic display for PC or TV (on a budget)
til·@anomaly·
0.000 HBDTIL: How to build a See-Through Holographic display for PC or TV (on a budget)
<html> <p><img src="http://localhoststudio.com/img/Hologram1.png" width="640" height="480"/></p> <h1>It's actually a lot easier than you might think.</h1> <p>First I'll start with the parts that I used:</p> <p>1 <a href="https://www.amazon.com/gp/product/B006QZ7JXO/ref=ox_sc_act_title_3?ie=UTF8&psc=1&smid=ATVPDKIKX0DER">Acrylic Sheet</a> = $20</p> <p>1 <a href="https://www.amazon.com/Cosco-Resin-Folding-Table-Black/dp/B017W26Q9C/ref=sr_1_10?ie=UTF8&qid=1481833682&sr=8-10&keywords=folding+table">Table</a> = $35</p> <p>2 <a href="https://www.amazon.com/Bessey-CM22-8-Inch-Malleable-Clamp/dp/B0006694HI/ref=sr_1_4?s=power-hand-tools&ie=UTF8&qid=1481833530&sr=1-4&keywords=c+clamp">C-Clamps</a> = $4 online (you can probably find them cheaper elsewhere)</p> <p>1 <a href="https://www.amazon.com/ASUS-VS228H-P-1920x1080-Back-lit-Monitor/dp/B005BZNDOO/ref=sr_1_6?s=pc&ie=UTF8&qid=1481833867&sr=1-6&keywords=monitor">PC Monitor</a> = $100+</p> <p>To be honest I already had almost everything I needed just laying around the house, I only spent $20 to buy the Acrylic Sheet. It arrived with both sides covered by paper to prevent scratching (acrylic can get scratched easier than glass). You can get tinted acrylic for a better reflection, but I found that the totally see-through kind works perfect for my needs and also provides a more 'invisible' display experience.</p> <p><img src="http://localhoststudio.com/img/Hologram2.png" width="640" height="480"/></p> <p>The first thing I did (after some experimentation and thought) was clamp the acrylic sheet to the back of my folding table, they both turned out to be the same length so it worked out perfectly. The acrylic is a somewhat flexible material and I was able to push it a little to make it bend approximately 45 degrees over the table. Having it lean like that was important so that it can reflect the monitor (laying on its back face up on the table).</p> <p><img src="http://localhoststudio.com/img/Hologram3.png" width="640" height="480"/></p> <p>Note: In the above picture it looks like the acrylic sheet is leaning away from the monitor, but that's an optical illusion, what you're really seeing is just the reflection of the monitor, not the see through acrylic material (which is very hard to see in this picture). Also, please don't mind the mess in the background, I was rearranging my room now that I've got this awesome new display.</p> <p><img src="http://localhoststudio.com/img/Hologram4.png" width="640" height="480"/></p> <p>The only real difficulty I ran into when making this was that the reflection in the glossy acrylic sheet was mirrored horizontally and I needed to find a software approach to 'un-mirror' it. In Windows the flip screen option actually rotates the display 180 degrees. So for Windows, I needed to download a program called <a href="https://www.realtimesoft.com/ultramon/">Ultramon</a>.</p> <p>The only problem I had with Ultramon (aside from not being completely free) was that it would only seem to mirror the image from one monitor to another monitor. I was hoping to use the holographic display as a second screen without having to take up the other screen in the process. So I chose to install Ubuntu Linux onto my computer instead of Windows.</p> <p>Under Linux flipping the display horizontally was a piece of cake. It only took one command line code:</p> <blockquote>xrandr --output DVI-1 --reflect x</blockquote> <p>First I just had to type 'xrandr' at the linux terminal to see which display I wanted to use for the output, in this case it was DVI-1. Also, typing 'xrandr --help' brings up a nice guide on how to use the xrandr program. I'm sure there's probably a way to do this with Mac OS X as well, but I haven't tried it with a Mac yet.</p> <p>All in all, I'd have to say that I'm really happy with this new holographic see-through display. Small text is a little harder to read than with a regular monitor, but adjusting the resolution can help with that. Also it helps if you turn up the monitor's brightness settings.</p> <p>I got the idea for this project from YouTube. Here's the video that showed me how the idea works:</p> <p>https://www.youtube.com/watch?v=CVimPY5cobU</p> <p>(The photos above were taken by me on my Android Phone. Video credits go to YouTube user 'channel48'.)</p> </html>
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