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BLUEBOX portable generator
Wall-mounted Kitchen PC
How to make your own LED lightbulbs
That lamp looks amazing!! it's a great idea for those like me that can't find the original lamps in our countrys!!Very Impressive
LED Projector Lamp v.2.0
hi i have my projector with 2000 lumens can i increase lamp capacity to get 4000 lumens. Mine is 220v 230w lamp as of now.
Had I known that my instructable would get me CERN-level comments, I would have just posted pictures :-). Thank you for your insights. But we're all beating a dead horse. I gave up on this. I find Xenon bulbs a much better alternative. Not as good as the original, but it does make a projector usable.
Heh... The grounds for the premise is solid, but your premise is wrong.http://www.projectorreviews.com/projector-categori...Most of those don't have Laser LEDs... Your premise fails on a few fronts. 1) 20k Lumens == 20k Lux == 20k Candellas. 2) The emitter source for the high pressure mercury arc is NOT constrained to 20 degrees, but rather 360- which makes the Candellas without the proper lumiary assembly down to 3k Candellas.3) A similar "proper" lumiary assembly can be made to constrain the LED Emission profile to about 20 degrees.4) With "1", all things being equal, if you constrain the light to 20 degrees of emission profile with low losses, X lumens *DOES* equate to X candela.5) once you get past the 100 lm/watt range, you're in the domains beyond even UHP mercury vapor for luminous intensity.Now, had you said it was "easier" to accomplish the focusing because of UHP being a point source for the light and the LED's being "more spread out", I'd have bought the statement in spite of the handwavium you're putting out. However, since you went where you went...I need chest waders for it.LED's have a potential to be made as good or better with performance levels exceeding 200lm/watt now with the right luminaries. It may or may not be that you can retrofit a projector gracefully with such gear, but it's worth trying. The reason why they have as many "fails" as we seem to have (with a few recent successes, albeit ugly as hell) is that it's harder to get the focusing you need to keep the light going in the right directions for projecting. It's not that it's impossible (you're seeing 800+ lm projectors in that list...)- it's difficult.I'm happy for the challenge.
LED Projector Lamp v.1.0
Right now I'm building mine with a 32" LED tv and a LeapMotion for hand gesture tracking. It will be on a tv full motion adjustable wall mount, so we can turn it towards us in the kitchen. I'll be using Cortana for now with AI assistance, but looking to integrate Alexa from Amazon.Cant wait to complete it and post on here. Thank you for sharing this DIY project. Very Cool and inspiring!
You could use the internal lens array from an old slide projector, though it may be too large to fit in the space.
Might you do a photo of the bridge of wire? It is that I have not still had it very clear, I have the same projector. Sorry my english
I thought about doing myself one like that. I even sort of did, if you take a look in my instructables. But what I didn't liked about the all-in-one case solution is the fact that you have to keep it all in the sun. A lot. Have you tested it? I mean, sure, as a proof of concept it's great, but leave that case out for a full day in a hot sun. You won't be able to touch the solar panels. The case beneath them has no vents and it holds li-ion batteries. Take a look at the chart below. Beyond 40 degrees Celsius, accelerated battery aging sets in. Above 80 degrees you'll get a fire. Even with vents, it will still be too hot. BMS WILL cut down the charging rate, trying to compensate for the high temperature detected. So you'll get undercharged, hot batteries.Also, the black plastic case under the intense UV treatment will get brittle and crack. That's from experience. Things aren't better with aluminium boxes, either. As I said, until batteries evolve to cope with high temperatures, their place is nowhere near the solar panels. I can see something like that working in slightly negative temperature environments where the cold would keep things in normal ranges - but the UV argument remains even stronger.
Nice job. But that's one unfortunate base shape. :-)
how to calculate component value manually if i using 12 smd led's of 0.5 watt.
Nice post friend.I bought a panasonic pt ax100u projector which has a bulb expected to live around 800 hours around 700 it started to shut off once then have to be turned on and worked fine...well after 4 months later and having to turn the darn thing on 5 times before it stays on im curious as to if its a bulb issue or something else.for more details: http://www.tvlampsforless.com/
I have done this before ran into an issue though the light I got was massively bright and hot melted the case and the color wheel never really messed with the type of light I purchased before but hoooo man you want to talk about blinding light this thing was insane. On a side note a typical 100wat bulb is 1600 lumens ... But I think the fella that had the idea from the car light hit it right on the money... Anyhow your post is fairly old and LED has come a long way since then so I am sure you have found the way... Easy way to find the circuit to trick is look for two optocouplers actually often you can just trace these out and just cut and splice wire that is there to make it work.Anyhow I enjoyed your posting a bit nostalgic for me ;)
The multiple LED lightsources with a single reflector system do create light of course but most of the light will not make it through the projection system. This is due to the so called 'Etendue' of any optical system, the product of the area through which the light traverses or from where it originates and the spatial angle it occupies. A loss-less system can only exist if the source's etendue is equal to or smaller than that of the rest of the optical system. If the etendue of the source is much larger than that of the optical system, most of the light will not be guidable through the system. The projection system has been designed for a high pressure arc lamp that is characterized by an enormous luminance, a light flux emanating from nearly a point, i.e. a very small surface. These lamps have many negatives (short lived, UV, explosion, modest energetic efficiency) but are hard to beat when it comes to their optical geometry, all the light comes from one small point and facilitates an optical system to capture, guide, and image it. The Luminance of a high pressure Mercury arc lamp is in the order of 4 Giga Candela per m2. That of a LED about 8 Mega Candele per m2. A factor of 500 less!So when it comes to converting electrical energy into light energy without many contraints where that light goes, the LED wins (lumens per Watt) but when it comes to creating light that is useful in a projection system the LED is far inferior. Conclusion:Most projection systems are designed such that they operate, even with a high pressure arc lamp, in an etendue situation that is already not lossless.So the total light emitting surface of the LED should not be bigger than that of the arc in the arc lamp. Assuming for simplicity that the arc is a little sphere with radius 0.5 mm, its surface is 4 * pi * 0.5² = appr. 3 mm².Unfortunately from such a small surface a LED can only produce a few lumens. Had this not been the case of course all projectors would have been using LEDs to start with. Latest solid-state trend is the use of laser diodes. They achieve much higher luminances than LEDs can but are costly at the power levels needed.
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