Step 5: Final projector

Now you only need to find a place where you can put it. You should carefully choose a place with a lot of sunlight. The advantage of the used solar garden light is that it only lights up at night when the graffiti can be seen. I've tested mine on the balcony the last days but I have to say that the sun here in winter is too weak to give the energy for a whole night of projection. Perhaps I should wait till spring until I expose my projector to the street. So watch out, perhaps you will see one of these someday in Munich.
<p>Cool idea! </p>
Oh man, you should be in GRL... I love this!
Sweet project.
That's a really good idea. I have to ask though. Does the solar panel have to face the sun directly for it to be efficient??
shadow07, I havent experimented with these small panels much though I do have some solar walkway lights (currently buried underneath the snow = not very effective). From what I have read about solar water heating panels, and should be true for all solar panels, is generally facing your panel south and with a little bit of tip toward the south (instead of the panel looking straight up) you are going to get just about the same results (within 10%) of getting a solar contractor to come out to your house and align it for the 100% best angle.<br/>
south facing for northern hem, north facing for southern
thanks. good catch. I guess I was thinking too locally. these here "internets" are kind of a big deal ALL OVER the world, huh? ; )
yeh can't blame you for forgetting. i don't seem to be able to get the lens. so none of this information is helpful to the southern hemisphere. but thats no fault of the people here, its the damn lack of people in Australia and lack of demand for a simple convex glass lens.
Go to any pharmacy and look at the 'readers' bifocals glasses...would any of them do the job? Can you not shop on the ubiquitous Internet?
I didn't have the chance to test it, but I think a clear sky would be sufficient. I often see these lights in the neigborhood and they are very dim in winter. I would suggest aiming for a better solar panel.
they work fine as garden lights not pointed directly at the sun, i don't see why the changes would make them work any different.
<br>LED ALADDIN Limited <br> <br>All light sources in our houses or at work must give an appropriate amount of light depending on the type of activities we perform. While working on a task that requires medium concentration the illuminance in a room should be at least 300 lx. The desks and keyboards while working at a computer should be illuminated with about 500 lx and while performing tasks that require high precision and concentration the luminous flux density should be about 750 lx. For comparison the amount of light that is enough for relaxing and watching tv is about 20 lx. Under this value the human eye is not able to recognize the features of a face. <br> <br> <br> <br>Examples of suggested illuminance in rooms <br> <br>Living room <br> <br> 1.main lighting: 100-200 lx. <br> <br> 2.surface of a table for reading and writing: 300-500 lx. <br> <br> 3.dining table: 300-500 lx. <br> <br> 4.computer stand: 500-750 lx. <br> <br>Kitchen <br> <br> 1.main lighting: 200-300 lx. <br> <br> 2.under shelf lighting: 500 lx. <br> <br>Other rooms <br> <br> 1.hallways, stairs: 50-100 lx <br> <br> 2.bathroom and toilet: 300-500 lx <br> <br>Other exemplary values <br> <br> 1.facial features recognition: 20lx. <br> <br> 2.sunny day: up to 10 000 lx. <br> <br>Multifunctionality of lighting <br> <br>While designing lighting in a house or flat it is important to keep in mind, that very often one room is used for many different kind of activities. For example a living room is a good place to relax and watch TV (where a subtle, slightly diffused light is most appropriate) but also for family meetings and meals for which the luminous flux density should be about 300-500 lx. This is why we should not limit the light sources to only one, but to few different lighting points that can work independently from each other. <br> <br> <br>Many sources of light in one room <br> <br>Due to the fact that most of the rooms in our homes are used for different activities, it is suggested to use multiple independent lighting circuits. A very good solution, that is more and more popular in interior design, is diffuse lighting. Diffused light may be produced both by a reflection of light from a completely nonspecular surface and by using multiple small point light sources. <br> <br> <br>Energy efficient and environmentally friendly <br> <br>While designing the lighting in a house it is good to choose light fixtures that can work with energy saving light sources. This environmentally friendly lighting not only helps to save money, but it is also shows our care about the environment. <br> <br> <br> <br>Good quality light sources <br> <br>We should always remember to choose good quality light sources. Very often a theoretically cheaper light source is actually more expensive because of its shorter lifetime and because its performance is much lower than stated by the manufacturer. <br> <br> <br>Contact LEDaladdin <br>LED Aladdin Limited <br>No.406 HongTeng Building, <br> <br>No.392# Xihong Rd,Gulou. <br> <br>Fuzhou,Fujian. <br> <br>350002 <br> <br>China <br> <br>Tel. : +86 591 6310 1956 <br> <br>Fax. : +86 591 2285 5952 <br> <br>E-Mail : info@LEDaladdin.com <br> <br>WEB: http://www.ledaladdin.com/index.html <br> <br> <br> <br> <br> <br> <br> <br> <br>
Dude this rocks.
does it have to be a solar lantern<br>
What is the size of the lenses?
what does RDN stand for?
the doods name irl is prob rodney.... now shorten it rdni or rdn1.. thats my guess
its the dudes name on instructables
grab one of those cheap LCD alarm clocks and remove the back layer of the LCD and put it in the tube and, DIY PROJECTOR ALARM CLOCK! get it?
or even just a whole telescope??
can i just use a lens from a telescope or something?
can anyone help find a supplyer of the lens in australia. or a place that will ship them to australia. thanks
This is a great project. A practical use for it could be to project your street address on to the pavement at night allowing for easier location of your hosue by the pizza guy... and we all want our pizza sooner, right? : )
Really like this one, and very clever too! Questions though: what type of lens did you use (in milimeters, I mean) and is it convex or concave. Also, how large is the projection? What would you have to change to get a really large projection? Thanks everyone!
Petrus, keep in mind that there are only so many lumens coming out of that LED. As you focus the image to something larger it becomes weaker. that being said, to make the image larger or smaller, experimenting with differnet lenses would be one thing, the easiest would be moving the lens closer or further away from the light source.
here is the whole thing for $2.50<br/><a rel="nofollow" href="http://www.allelectronics.com/make-a-store/item/SPL-06/SOLAR-CELLS-W/CHARGING-CIRCUIT-1-AMBER-LED/-/1.html">http://www.allelectronics.com/make-a-store/item/SPL-06/SOLAR-CELLS-W/CHARGING-CIRCUIT-1-AMBER-LED/-/1.html</a><br/>
That looks uncannily like a Martain War Machine from War of the Worlds.
thats just what i was thinking
agreed.<br/>it also looks just a <em>little</em> bit evil...<br/>
heheheh make sure no jackalopes popup!
I wonder how the transparency from a view master disk would look,<br/><a rel="nofollow" href="http://en.wikipedia.org/wiki/View-Master.">http://en.wikipedia.org/wiki/View-Master.</a><br/><br/>
Cool idea and nice work! :-) I wonder if the same could be done with enough combined solar cells from old/broken garden lights to power a laser pointer to project a brighter image even farther. I'm thinking against the side of a large building. ;-)
This is very cool. You can also try it with one of those RGB LEDs that has a build in microcontroller that makes it flash in various colors (Rainbow LEDs)
I like the micro controller idea I was also thinking on making a version that uses one of those cheap nokia LCDs converted to a projector of course that would take more power then your typical solar light can supply.
That's a really great idea. You can post an Instructable with that idea. I think many people would love it.
I will when I figure out how to make one transmissive the color nokia I took apart didn't show much promise blocked way too much light after ripping the back off so maybe I might look into those cheap DVD players.
What are you planning to use as the light source. some LEDs?
OK, good luck.
agreed! that is brilliant! I am going to work on that. Microprojectors are my new project. And If I can make them cheap enough, i can scatter them around town. For now these static image projectors will have to do, though.
Cool. When you've made it, send a link to me!
Sorry! I use certain abbreviations without thinking. One question mark would have sufficed, though :) No problem!*
Tip: a colour changing led will not work with most solar powered garden lights. I tried and found out there is the following problem: most solar lights use only one battery cell and convert the 1,2 V to a higher voltage with a switching circuit. The higher voltage might just be enough for a colour changing led, but the problem remains the output voltage is not stabilised and the led is constantly being reset and does not get passed it's starting colour. So, you would pobably build your own system working at a stable voltage adjusted to the led used.
you're right, but there are many different color changing LEDs out there. Some requires 3V and some requires 5V. maybe it would be possible to find a suitable LED.
I am afraid the colour changing still gets reset each time the voltage goes down (which it does at high frequency). I expect you will need to stabilise the voltage first. That can be done of course with some extra parts.
You might try <a rel="nofollow" href="http://allelectronics.com/">http://allelectronics.com/</a> for the lenses. I got a package of lenses from them for a small amount. They also have LEDs and various other electronics. -Michael<br/>
PS: they also have solar cells + charger circuits & leds for < $5 US ...

About This Instructable


299 favorites


More by RDN1: Solar Powered Light-Graffiti Projector
Add instructable to: