Optical illusions are fun

How many animals do you see?

Posted by Downunder35m 2 years ago

mouse reassembling

How to reassemble a broken optical mouse?

Posted by krishna_ei 8 years ago

10 Optical Illusions in 2 Minutes

The new advertising is a little longer, but a little more entertaining as this short video is a good example of. I don't care much about getting a new phone, but kudos to Samsung for making a playful video that compiles some classic optical illusions.via Techeblog

Posted by fungus amungus 10 years ago

magic town

I visited the sculpters shop in manitou springs colorado micheal gorman there is an unbelievable display called magic town, in the model building have scenes within the building which change between two scenes there appears to be a glass panel, at 45 degrees some of the objects in the scene are attached upside down and when the scene changes they appear in the next scene there are small light bulbs which go on and off as the scene changes his is not a good description but can anyone explain to me how this is done its driving me crazy

Posted by oldgiza 5 years ago

Jesus optical illusion

Does anybody know why this works, its so cool! Stare at the 4 dots in the middle for 30-40 seconds, then look at something like a white wall. Then blink, what do you see?

Posted by guyfrom7up 10 years ago

Group:Optical Illusions

 Heeeelllloooo!So i just wanted to talk about my group Optical Illusions,and yes I know it looks like there is 3 I's but it's actually 1I and 2L's.This group is about magic or DUH optical illusions.Ibles and videos must come to me before published.I will post updates every Tuesday,Friday,or Saturday.If I have time any other days I will update.My only rules are if you try to post a bad video I might give you a warning first but the second time you try I will kick you out.Well that is all you need to know.Oh wait one more thing...I will change the picture every month. 

Posted by Knave125 8 years ago

Optical Mouse Help!

I need someone to explain a typical optical mouse circuit to me using diagrams and such. I could do it myself but I only have one optical mouse on me at the moment so Id have to go to the store to get a really cheap one. I'm on the verge of a kipkay quality instructable!

Posted by emuman4evr 10 years ago

optical pulse oximeter

Hello everybody, I have a big problem. I want to do for the optical pulse oximeter project was a link posted here.  I need the code and the circuit diagram in there to do the project. this is an emergency. can you help me please? Can you at least provide me access to people who share the project's e-mail address? thank you and I am waiting for your help. my e-mail adress: merveebudakk@gmail.com

Posted by mervebdk 2 years ago

Researchers Play Tune Recorded Before Edison - Earliest Audio Recording Deciphered

This is a great story. In the 1850s, a Frenchman develops a device that records audio as optical data. With modern technology, we can playback his recording.Researchers Play Tune Recorded Before EdisonFor more than a century, since he captured the spoken words "Mary had a little lamb" on a sheet of tinfoil, Thomas Edison has been considered the father of recorded sound. But researchers say they have unearthed a recording of the human voice, made by a little-known Frenchman, that predates Edison's invention of the phonograph by nearly two decades.The 10-second recording of a singer crooning the folk song "Au Clair de la Lune" was discovered earlier this month in an archive in Paris by a group of American audio historians. It was made, the researchers say, on April 9, 1860, on a phonautograph, a machine designed to record sounds visually, not to play them back. But the phonautograph recording, or phonautogram, was made playable -- converted from squiggles on paper to sound -- by scientists at the Lawrence Berkeley National Laboratory in Berkeley, Calif.Check out the full article to listen to the 1860 recording.via eit and Rawhide

Posted by ewilhelm 10 years ago

Printing a Random Pattern on the desk

A couple of weeks ago, I bought an Ativa (Office Depot store brand) wireless mouse on sale for $15. It appears that they were clearing out stock, because they no longer list it on their website, but this is the closest thing I've found. I like the mouse, particularly because there is a built-in charger in the wireless tranciever for the two Ni-MH AAAs it takes. Yes, AAAs, the link is for a different mouse.Problem: Lousy resolution, I think. the wired Lenovomouse that came with my computer worked just fine on my smooth, blank desk surface, but this one requires much more of a pattern. I don't like mousepads. Scribbles with a pencil work well so far, but they smudge after a day or so. I want to put some sort of pattern on my desk for it to read. My best idea was a laser-cut random bitmap stencil and a can of black spray paint, but I don't have a laser cutter. Ideas?

Posted by CameronSS 9 years ago

Which Direction Does She Spin?

Check out the optical illusion below. Since the figure is totally black, there's no depth- you can see her spinning either clockwise or counter-clockwise. Which way do you see it first? Try reversing the spin direction- moving your finger in a circular motion at the rate of rotation can help you reset. How easy is do you find it to swap perspective? Does it make your brain hurt?

Posted by canida 10 years ago

Freaky Optical Illusion!

Here is a cool optical illusion I got in an email:'The Brain'This is quite amazing..If you see this lady turning in clockwise you are using your right brain. If you see it the other way, you are using left brain.Some people do see both ways, but most people see it only one way.See if you can make her go one way and then the other byshifting the brain's current.BOTH DIRECTIONS CAN BE SEENExperimentation has shown that the two different sides, or hemispheres,of the brain are responsible for different manners of thinking.The following table illustrates the differences between left-brain andright-brain thinking:Left Brain Right BrainLogical RandomSequential IntuitiveRational HolisticAnalytical SynthesizingObjective SubjectiveLooks at Looks atparts wholesMost individuals have a distinct preference for one of these styles of thinking. Some, however, are morewhole-brained and equally adept at both modes.In general, schools tend to favor left-brain modes ofthinking, while downplaying the right-brain activities.Left-brain scholastic subjects focus on logical thinking,analysis, and accuracy. Right-brained subjects, on theother hand, focus on aesthetics, feeling, and creativity.If you look away, she may switch from one direction to the other.I found that if I just look at her feet or relax and look at the floorwhere the reflection shows, she will switch direction!

Posted by Arbitror 10 years ago

Fiber Optic Illuminated Heels

I found these gorgeous Fiber Optic Illuminated Heels on Fashioning Technology.  These heels from Anastasia Radevich's Kinect 2011 collection.  They are illuminated using fiber optic technology and turn on with switches placed at the ankels.

Posted by Carleyy 7 years ago

how to convert usb optical mouse to wireless

How to convert my wired optical mouse to wireless? please help me...

Posted by christin_meghan 7 years ago

Does anyone know the pinout of this chip?

Hello fellow Arduino-ists I've got an old laser mouse (DELL M-UVDEL1) and I want to get my arduino uno or mega (I've got both) to read the data it sends out and print it to the serial monitor. First, can anyone tell me the pinout of the chip on the following picture: http://imgur.com/oy4si, bakside: http://imgur.com/B4sQM, then I think I can work from there, unless anyone wants to help me even more by posting an example code, that would be great

Posted by mdanielsson1 5 years ago

New group started - Optic fiber

I'm read a lot of document about optic fiber, and I've seen that: -many people are interested in optic fiber (it's magic, just like leds are) -people make some good craft with optic fiber, but sometime don't have the needed understanding of how it works, how to cut it, sand it, bend it, ...) -reader of the nice instructables here have trouble buying optic fiber when they want to start new project. I hope this group will help people learning from eachother, leading to new more interesting project and instructables. tReg.

Posted by treg 10 years ago

Efficacy of cheap laser pointer optics

Are cheap laser pointer optical units suitable for adapting with high powerlaser diodes from DVD-RW drives. I don't have access to internet transactionsso I can't get a laser module.

Posted by volthead 8 years ago

where to get fiber optic scraps for art project

Where can I get fiber optic scraps, 1-2mm glass for an art/tech project? 2-5 ft long about a laundry basket  to small truck bed full.        Houston TX

Posted by broodinghen 4 years ago

Extend optical mouse range

Hi all, I'm wanting to make a jig for a production project requiring a sensitive optical measure of movement with a focal length of 5-10 mm. I thought an optical mouse might be a good start but the lenses in a few I've tried require the device to be too close. It needs to be no bigger than the electronics of a mouse. If anyone has a lens that could be perfect or other ideas I'd love to hear them. Thanks, D

Posted by Qball007 5 years ago

how to make 2-way optical fiber comm. system?

Hello, I’m doing my project about 2-way (full duplex) optical fiber communication system. From what I knew, currently there is only 1-way (half-duplex) optical fiber communication system. Thus, I need to upgrade this system to be in 2-way communication system. How to make it? Can I just replace the transmitter and receiver with the transceiver in order to make it and how? Really need help..TQVM in advanced.

Posted by kamiladnan 8 years ago

Fiber Optics Bed Bed Cover - Way Too Cool

What do you guys think? Possible to make by hand? Comfortable if done DIY? http://www.thefancy.com/things/210657943979299025 Awesome.

Posted by Myrloc 5 years ago

Digital pen

Can  an optical mouse be turned into a PC screen writing gadget or digital pen? Optical mouse have a low resolution camera. By using a software that coordinates what's being shown on the screen and a modified optical mouse, it could be possible to draw on the screen or turn this combination into a touch screen application.

Posted by oobi07 8 years ago

any ideas for a new function for my optical mouse?

I have this optical mouse (completely useless, i have a new one.) and i want to give this mouse a new purpose :). But I have no ideas :D So, what can i do with this thing? oh yes, i'm a beginner...

Posted by vollmond 11 years ago

I need help rewiring an optical mouse

Hello, I started a project I don't have the tech know-how to finish. I'm trying to rewire a wireless mouse to an arcade style interface. Is there a way I can rewire an optical mouse so as to accept input from an arcade joystick?  Thanks!

Posted by quantumgun 4 years ago

fiber optic transmitter and reciever booster

I am a hobbist/inventor/sculptor/geek. I am looking for plans or a kit to build a fiber optic booster transmitter and reciever. Or even a unit that can send and recieve data and video signals. The signal must be able to travel a minimum of 300 ft. I am trying to build a submersible rov that I can afford. The other option that I might have is a rf to fiber optic converter. Would anyone be able to help me out?

Posted by batguanno 11 years ago

How to use Fiber Optics?

I am making a super-discreet earpiece/IEM that is intended for any use where you feel bored, where you are not supposed to use electronic devices. Meetings, lectures, classrooms, etc. Basically, it's a 3.5mm jack wired to a Balanced Armature driver. Essentially, I remove the big, thick and bulky housings of earpieces and leaving the smaller drivers in place. I've been using thin copper cables in the earpieces I buy. They work, but are still visible. I found that optical cables are near invisible, glass-like. I intend to wire them into my earpieces. So, do I require lots of circuits? I can do those, if they don't poke a black hole in my wallet. No more than USD100, if entirely possible.  I just want to know how to change electricity into light and back again, and allow for audio transfer from MP3 player to earpiece drivers.

Posted by chua_erei 5 years ago

Surround Sound Help(connection to an Xbox), and my dream media setup

I couldn't decide what forum to put this in(since surround sound could also be a Home thing), but i decided that Music would be best. Basically, I bought a $79 Logitech surround sound system a few weeks ago and hooked it up in my room. For the money, it's pretty awesome. The sound is lacking though, it's fine, but the frequency response is anything but linear. Some songs are more noticeable than others. Either way, I've been looking at the Logitech Z-5500 THX Certified surround sound speakers. BTW, all these are 5.1, not 2.1 sets. The reviews on youtube and elsewhere give it 5 stars, and some go as far to say that the sound matches $500+ units, saying its the best midrange speaker system around. The ten inch sub is appealing too(movies- watching The Patriot would become just that much more real because of the explosions). Reviews say that the satellite's sound is sharp, clear, and pure, no static or buzz.That's definitely a big deal to me. So yeah, the Z-5500 set is $300+...and the others were $79...I think it's worth it to someone who praises music like I do. If you listen to music occasionally, then you might not get where I'm coming from, but I listen to 3-6 hours of music every day, sometimes more. MY PROBLEM:I already installed the surround sound(the cheaper one) in my room, and it would be retarded to get another set. Not to mention a waste of time and money. I need money to buy the nice set. So, my brother agreed to buy it from me if I install it for him. He wants it to be hooked up to his Xbox 360. Good deal. However, I don't know what kind of output it has. I think its a Toslink Optical Audio output, but I'm not sure. The "receiver" on the sub has three inputs, a black 3.5mm female input, as well as a orange-red and light green input of the same type. These are the direct analog inputs to the speakers; it was a cheap set so they don't have an optical in.MY QUESTION:Assuming that my brother is still interested by the time I have the money to buy those speakers, do they even make a Toslink Optical adapter that will work? I tried google, but I wasnt sure what to search for. Thanks. Also, if anybody has the Z-5500 system, let me know how you like it!My hopeful media setup:Dell Inspiron 1501 laptop with vista2TB Mybook External hard drives(two 1TB drives, either in a RAID setup or not, idk)Videosecu VGA to Component Video adapter32" TVCreative Sound Blaster external 5.1 surround sound cardLogitech Z-5500 5.1 surround soundDream setup:Mac Pro with dual monitorssome kind of adapter to get the video to the 32" TV aboveSame surround soundSame hard drivesSome kind of surround sound cardBasically the only difference between my (hopefully) future setup and my dream setup is the couple thousand $$$ of Mac and Apple stuff. Apple is so much better, but it comes with a price most of us cant afford. It's really too bad lol. For the first setup I only need the hard drives, the surround sound card, TV, and the surround sound to make it complete. Of course, theyre the most expensive parts...darnThanks!

Posted by John Smith 8 years ago

fibre optics

Hello, Hope to find here some information about Optical Fibres. I am building an under water housing for DSLR. I want to use it just under the water surface. Controlling (through an air bridge) and exposure (through optical light guide) are on land. The question is about optical fibres. I need a 160 cm long Fibre Optic Lightguide. A 1/4 inch diameter guide costs near 200 GBP. When I would make one myself of 1/2 inch diameter, I could safe 75 % + the entrance surface is more than 3 times larger, which is important, since I will have to guide the light of a flash gun! BUT, I doubt wether such a diy bundle of 1,5 mm diameter plastic fibres from ebay will give me roughly the same or preferably more light output as/than a professional guide? How do these plastic ebay fibres compare to professional or glass fibres in terms of light transfer efficiency? Any suggestions? If not, then a reference to another forum where they might be able to answer my questions, would be much appreciated.

Posted by butterflies55555 4 years ago

optical sensors from projection TV

I have a *lot* of junk from old TVs -  projection lenses, a fresnel lens and pcbs. so far I've only used caps and resistors in small projects. recently I came across a set of 4 optical sensors anchored to the inside of a projection TV, I believe they are used for auto alignment of the RGB images on the mirror. What is a good project to use these in? could I use them to possibly build some sort of solar tracker ? perhaps using an arduino ? any ideas appreciated.

Posted by dhymers 8 years ago

Refinishing Optical Media

I was thinking about ways to actually get good data off of a fucked disk. I figured for a permanent solution, instead of grinding the disk down, or filling it in with greasy things, actually reforming the surface of the disk with some clear resin or acrylic. Comments?

Posted by Crash2108 11 years ago

a DIY optical port

I have been intrested in optical computer for a while but found them rather expensive to build so I tried to look for cheaper ways to build some key features like the gates. The basic idea is to use solar cells that power a led. For and OR-Port you use solarcells where it is enough that one of the side gets light to make the led burn. To make and AND-port, you can put a resitor in between so that it really needs the power form both channel sot make a led burn. For a NOT-port you put an invertor in, so that when it burns it gives no signal, and wheren it does not receive light it burns this because of a battery it caries. A NOT-port is almost like a led-throwie.I do hav emore but wanted to know if this would be a good place or not, or if someones intrested in hearing on how to build a full optical computer, still basic, but almost completly optical, or if it would be better to post this on the microprocessor group at the opencourseware of the MIT ?

Posted by Floris Vermeir 11 years ago


Do someone know how to make a kind of motorized optical zoom? it need to be cheap (mayB buying some cheap stuff at the dollar store (binocular some stuff like that)) (shorting all this means: I need to make a optical zoomer that i can control whit some button) thx Koax

Posted by koax 10 years ago

Mouse wheel. How do I replace optical encoder with rotary encoder?

Hi, I have a Belkin Nostromo N52 controller. It has a mousewheel that can be custom programmed independently from the wheel in your regular mouse. I want to use it as a jog dial so I want to remove it from the original place and replace the rubber wheel with a jog dial. Basically it is to rotate the wheel 90 degrees as they did here with a mouse: https://www.instructables.com/id/Desktop-Scroll-Wheel-and-Volume-Control/?ALLSTEPS The problem is the Nostromo wheel uses an optical encoder instead of a rotary encoder (the typical used by half of the mouse wheels in the world). The mod I want to do would be a little complicated using the optical encoder (I would have to use a piece of PCB perpendiculary soldered to the main PCB and the height of the resulting device would be very tall for what I want) but it would be very easy if I could replace the optical encoder with a rotary encoder I salvaged from a mouse since it can be laid down on the PCB pretty well. The problem is the signals of the optical encoder and the signals of the rotary encoder are different. The middle leg of the receiver in the optical encoder is connected to +5vcc while the outputs are connected to ground using 10KΩ resistors. In the rotary encoder, the first leg is connected to ground and the other two go directly to the mouse IC. I tried to remove the optical encoder of the Nostromo and connect the two outputs of the rotary encoder to where the outputs of the IR detector go and the third leg to ground but all I get is a permanently actived scroll down (as if the wheel was scrolling down all the time). I didn't dare to connect the third leg to Vcc just in case I blow the thing. I think there must be a way to replace the optical encoder with a rotary encoder and get the same signals and I think this involves using the Vcc line and resistors but since I'm not very good at the electronic side of things, I don't know how to do it. I'm enclosing a diagram of the optical encoder circuit. The diagram on the right enclosed in question marks is what I guess would be the equivalent circuit for the rotary encoder but I'm not sure. Can anybody confirm it or point out the appropriate corrections? Thank you.

Posted by jedikalimero 4 years ago

Help! Flash/fiber optic wire question

Help help! I was following the instructions at http://tutorialgeek.blogspot.com/2010/11/fix-flash-on-nikon-d70-dslr.html to fix a flash on a camera I got on ebay. All was going great until the black wire came out. I tried putting it back in and got a terrible shock, and the flash no longer worked. So I thought it was a grounding wire. I tried to strip it and put it back in its little holes, but it did NOT want to strip. Downloading the service manual later showed me that it didn't want to strip because it's really fiber optics in there. In trying to fix it some more, I got shocked a few more times, pretty strongly (with the battery out, even). I'm not sure if I've fried a component or not, but at least nothing smells bad. I'd like to try to put a new fiber optic wire in there, but I have no idea where to find one. Can anyone help me? The gauge of the wire is pretty standard for small electronics. Please let me know!! Susan

Posted by susanrm 7 years ago

Old Renco Optical Encoder Wiring with DB29 Connection

Today, I went out and found this old Renco Optical Encoder. At three dollars Canadian, we might as well have a go at it, eh? Unfortunately, my search concerning information on this thing hasn't gone too far. My question is, does anyone know how to wire this up and what data it gives out? I was hoping to use it with an Arduino, but it depends if this would work. The connector has been identified as a DB29, and has the following written on it: OPTICAL ENCODER MFD. BY THE RENCO CORPORATION GOLETA, CALIFORNIA CODE IDENTIFICATION NUMBER 34479 MODEL NUMBER 25AE - 3/5 SPL - 7A3 - S UNITED STATES POSTAL SERVICE ASSY. NO. 199506 SERIAL NO.     D1174   /   DATE     7704 If you've got any info regarding such encoder, please reply!

Posted by chamag1996 7 years ago

usb over fiber optic cable

My house was once part of a business that was connected to neighboring structures via fiber optics for Internet.  I want to put in a security system with some usb cameras and of course we know what those limits are.  I have successfully made 25' usb/cat5 cables using this site... they work great but I need 50 - 60'.  I was wondering if it was possible to utilize these fiber cables for the data side of the usb and somehow power it by other sources?  I know a little about fiber like putting in connectors and such and I do have 2 transceivers.  I can make rj45/usb connectors for the tranceiver ends but I'm just not sure of the details or even if I'm barking up the right tree.  I'm not sure where the power fits in either. Any of you geniuses know how I could do this? Thanks

Posted by cornflake000 8 years ago

what do i do with 420 meters of adss optical fiber cable

I have recently purchased 420 meters of ADSS fiber cable from a local utility company. Why you ask? Cause it was cheap. It was manufactured in 2008 by Alcoa Fujikura.  Here are the specs that I have .701" diameter 144ct fiber Single mode 8 buffer tubes 18 fibers per tube Does anyone have any suggestions for what I should do with it? Or just any ideas on who's hands it should end up in?  Any help would be greatly appreciated 

Posted by idontknownothin 3 years ago

How to make your own fat optical fiber for solar device?

I'm prototyping a solar energy device, and need to transport a concentrated light beam a couple of meters without loss or, ideally, burning anyone's hand off. I was thinking of some kind of 'total internal reflection' medium, such as glass, but it needs to be cheap and easy to make/find, and it would be great if it had at least a little flexibility. Is there any way to make your own? Some kind of gel, or crystal, or maybe water if it wouldn't attenuate or absorb too much of the energy? Failing that, is there some existing material I could wrench out the back of something? Cheers, Daniel.

Posted by SolarFlower_org 9 years ago

​Make an optic close focus.

I want to be able to put my night vision monocular in front of my 2x scope on my airsoft.I need a combination of lenses to put between my scope and the NV to let the scope focus at a couple of inches (instead of 30 feet), and reduce magnification because otherwise I’d just be looking at a tiny part of the phosphor screen heavily magnified.I know it’s possible because a commercial unit is available, I just don’t know if it’s feasible for a guy like me (doesn't have a degree in optics) to build (I'm thinking no, but I figured I'd ask).Thanks for any help you can offer.

Posted by instrucables360 2 months ago

Using lenses to create a beam of normal light??

If you had, say, light from a torch or whatever, directed it through a metal pipe or fiber optic to get it kind of directional, and then into some arrangement of lenses; what kind of maximum range could you expect before it completely lost focus? And would it still obey the inverse square law, or is that just for expanding spheres of light?

Posted by SolarFlower_org 9 years ago

Lens for a project

Hi! Im gonna try out this project, Telescope , as I know nothing about optic or lens function maybe someone could just let me know if I should go for a Tele-Auto 6.3/400 mm or a Sigma 70-300 mm F4-5,6 DL Macro Super. I asked the creator but as time runs out for me I hope this gives a faster response =) Thanks

Posted by Suizezem 6 years ago

Plastic Optic Fiber

Hi, I made a lot of research in order to find some plastic optic fiber in europe, and I finaly add to buy some full rolls of the one I liked. It it PMMA fiber with 0.3dB/m light loss, it polish well, and when use with long length, gives a sligher yellow / green color to the light (noticeable on white light, but really lower than the other I've tryed). If someone need some, I can make a kit with : -27 meters of 0.75mm diameter -15 meters of 1.00mm diameter - 7 meters of 1.50mm diameter I think thati ncluding shipping to anywhere I can send it for tens euros. If someone is interested, let me know and I will check shipping price and paypal fees. Regards, tReg.

Posted by treg 9 years ago

Temporary Car window Tint

How can optically clear(not hazy) window tint be applied such that it can be removed at night?

Posted by Toga_Dan 3 years ago

Motor and base design for optical toys

Hello everybody! I'm in the process of building a reiteration of a series of optical toys (like this one, or these) with motor, stroboscopes and little music system. The thing is their discs measure about 1 m (like 3,2 feets) and one of them (praxinoscope) is a heavy one due to the mirrors it possess (see photo [it isn't it's actual state]) so I created a metal base for it with a tube, three metal angles as legs and washing machine 115v ~60hz 70W 250VAC single phase motor soldered on (with capacitor), so the disc sits on top of the motor, and the thing is that after an hour of so of being tested on continuous duty it stopped and started to smell like burnt. What could the problem be? Could it be a design problem since the motor has all that weight on top? Should I have used gears and pulleys? How can I make it last longer without it being to complex?  If someone can help or has some ideas I'd appreciate it , thanks in advance! Benkos M. G.

Posted by BenkosM 2 years ago

Positive affirmation box

I am trying to make a positive affirmation machine so that when my students turn in homework it will either give an audio message or display a message that says something good.  I know I need to build an optical sensor but I was wondering if there is a build that you can suggest that I can modify?  I have moderate skills with building electronics and access to plenty of materials but I am lost as to how to start.

Posted by Mr.E1 3 years ago

What on earth is this???

I have a weird peice of unidentified optical equipment, got it at a garage sale, does anyone have any clue as to what it is or what/how its used?

Posted by The Ideanator 8 years ago

Solar 3w led fibre optic outside tree decoration

So I have salvaged a solar panel and the battery that it charged from a wireless alarm. The battery is 6v 1.2amps. My plan is to have the panel charge the cell during the day (its Ni-Mh) and using an LDR light a 3w led when its dark. The led will be connected to a number of strands of 1.5mm fibre optic cord, with a number of these attached to a tree to make it look.....nice. I have tested three strands of fibre optic cord with lengths of 2m with a lesser led and all appeared fine. I have a 3.7v 700ma driver (coming from China) which will drive one 3w led, along with heat sink. Now is where I am struggling a little, I am not massively experienced in electronics. I think I want a diode attached to the solar panel to avoid battery drain. Then a resistor to reduce my 6v to 3.7-4v and the LDR. Does this look like it would work in principle? Would the battery run 2 of these drivers/leds or would it discharge too rapidly? Thanks for any input!

Posted by earton 4 years ago


I would love to use SOLAR POWER and ELWIRE (electro luminescent wire) and if I can find a source of offcuts, some FIBRE OPTIC CABLE in a recycled junk sculpture. Being a female I never had a chance to learn much about electrical matters, soldering wires etc. If someone can give me some clear instructions on how to incorporate SOLAR POWER and ELWIRE it would be invaluable to me, and much appreciated. I would also like to know the best ways to link Fibre Optic Cable to a light source. I am hoping to source some solar panels from discarded solar garden lights. If anyone knows where I can source offcuts of FIBRE OPTIC CABLE  in  Western Australia that would be a big help too. Any information that will help me to understand how to use these materials will be most appreciated. If I can create what I am hoping to build, I will keep records and photos of the process and post pics on Instructables at a later date.

Posted by zoe-australia 5 years ago

Portable hole?

I recall there was an instructable about making a portable hole, or optical cavity with lights in it. As far as I knew, it was used as a coffee table, but I can't find it now. Has it been removed?

Posted by octochan 10 years ago

Home brew digital camera?

I came up with an idea for a project. I have a old *1913* bellows *pocket camera*. It would be a collectors item..but it's in baad shape. But the optics are fine. I want to rig up a really simple digital system inside. No complex metering. No exposure time controls. Really just an on/off switch. Exposure would be controlled by the optics already in place.Does anyone know where I could find a guide to make/modify a digital camera to do something along the line of what I want to do? Or any advice in general.

Posted by Drackar 11 years ago