audio spotlight?

Any one know how to make one of those sound from ultra sound gadgets? I saw an instructable for a kit once but I can't find it. thanks in advance!

Topic by clasic_traveller_diehard   |  last reply


I want to create an RGB pinspot for my disco ball.

I would love to use a color changing RGB (I will buy the bulb) I just want to find some way to make the spot light as tight a beam as possible? Maybe a fixture that works to tighten the beam or using the frame from a 36 par light and putting it in a reflective coating. Any idea is a good idea (mostly...)

Question by rcroft   |  last reply


Hack Needed: Rechargeable Halogen Spotlight

Greetings all, I'm in need of a hack to replace the lead acid battery in a rechargeable halogen spotlight purchased at a local store. The spotlight came with a AC recharger but 15 charge time hours returns only approximately twenty minutes of usable light. I'd much like to replace the power source with something of a longer duration than the current one third of an hour. As much interested in simply rewiring the device to work from my car's AC outlet if possible. Mind I only have a few dollars invested in this device still I'd like to see if a replacement power source is worth the effort. Thanks to all who reply.http://ledmuseum.candlepower.us/third/fixit.htm

Topic by patron_zero   |  last reply


DIY Outdoor Event Searchlight

In am interested in building an outdoor event searchlight or advertising spotlight that you might find at the opening of a Hollywood premier. Basically, an intense beam of light projecting miles into the sky to attract people to a location.  I searched Instructables and found some projects for stage spotlights but nothing like an outdoor searchlight. I did locate some complicated Carbon Arc and Xenon lamp projects but these involved a lot of expertise in electrical engineering! I am a novice but I am comfortable with basic "household' wiring. With that said, my thought was to try using 7 or 8 (maybe more) 55w car Xenon HID (6000k range) headlights as my light source. Xenon HID produce three times the light output as standard halogen headlamps (3000 lumens vs 1000 lumens) and require less energy. The "conversion kits" come with the igniter module and inverter ( ballasts) which reduces the amount of electrical wiring. At this point, the power source could be to use 110v household AC current and then, using a AC to DC converter, turn it into DC voltage and let the "conversion kit" components change it back to AC.  From what little I know, Xenon HID take about 25,000 volts to start a Xenon bulb and then 80-90 volts to keep it operating. During operation the AC ballast frequency is usually in the 250 to 450 Hz range. Each bulb draws around 6.5 amps at startup and then stabilizes at around 3.8 amps. Next, I would place the bulbs into the center of a Ellipsoidal Reflector to direct the light skyward. Basically, the 7-8 Xenon HID bulbs would be secured to a piece of sheet metal and then surrounded by a reflector so it would be like a VERY large headlight pointing into the sky. In one of the YouTube videos, the guy used a trashcan as the housing. I am not looking for something this large but similar in concept.  I located an Ellipsoidal Reflector on Ebay for about $55 and then I might just build a housing around it.  But would the reflector be enough to concentrate the light into a strong beam? Or, would I need to have some sort of lens to focus the light? If anybody has constructed something similar of if you have any pointers on what to do, please let me know.

Topic by leblanc9425   |  last reply


Author Spotlight Interviews: Nominate an author!

We recently began a new round of author spotlight interviews. For the first interview, we chose to reach out and chat with Nikus, who recently won the grand prize in this year's Epilog Contest. You can check out our interview here: Author Spotlight: NikusThese interviews are a great way to learn a little more about individual contributing authors here on Instructables, and see what makes them tick! Is there someone who is an active author that you'd be interested in learning more about? Now's your chance to nominate a fellow author. There are no set requirements to be eligible to be nominated. But generally, we're looking for authors who've shared a good handful of high-quality projects, which made a notable splash within the Instructables community.And yes, if you're feeling bold, you may certainly nominate yourself! : )

Topic by seamster   |  last reply


Know of a good light source for a Bat Signal?

I wanted to make a quick and inexpensive Bat Signal for Halloween (to shine on a wall, but clouds would be nice?) and purchased one of those cheap 10 million candle power lamps.  It has the brightness and power, but unfortunately it doesn't have the point-direct light necessary to maintain the cut-out shape; the bright beam has some scattering.  So I thought I would ask if anyone here happened to know of something that would work?  Thanks!

Question by Spunk-Monkey   |  last reply


Using 12VDC spotlight charger on LED's? Answered

I have an old rechargable spotlight that I never use, so I figured I would use it for parts.  Could I use the charger 120VAC/12VDC to power some LED's, like if I wanted to make an under the counter light? If so, would it be better to run the LEDs parallel or in series?  I was reading an instructable on beginning LED's and saw that series will divide the 12 volts to each LED (4 LEDs at 3 volts each), and running parallel will send the entire 12 volts to each LED.  Would I use resistors even if I ran the LED's in a series?    If I ran the LED'S parallel, would the follow crude schematic be correct? 

Question by pennsteve   |  last reply


low voltage photoelectric switch for led spotlight

I need help. I am making an led spotlight to mount on the flagpole and light up the flag at night. I have the lights from a 46 led flashlight. I've attached 2- 3.7v Li rechargeable batteries and a solar cell charger. Everything works great, except I want a photoelectric switch to turn light on and off. Right now, it is on a manual switch mounted to the pole. I cannot find and don't know how to build a 3.7v photocell circuit. I've tried 12v (all I can find except for 120v) and they won't work. I need to know what I need to make a 3.7v circuit/switch, and how to tie it in to the existing system. Can anyone help me? Thanks for any input. I am a novice, so be gentle. BJ

Topic by cottnpickr   |  last reply


How can I control a tilt-pan servo using my pc or arduino?

I am looking to control something like this http://www.lynxmotion.com/images/html/build16a.htm Using my PC or arduino so that I can get to to preform a random scrolling type of pattern, I want to mount model spot lights to them so I can use them in a model city scene. I know this is possible, I just have no real idea where to start. Thanks!

Question by finlander700   |  last reply


I have a PCB BOARD set up for 150x 5mm IR LED's would Fifty 1/2w 56 ohm resister work?

Infrared spotlight project. I have a PCB BOARD set up for 150x 5mm IR LED 1.5-1.6 forward voltage. Forward current is 60 mA 150 LED’s are divided into 50 groups (3 LEDs each + 1 resistor) What ohm resistors are needed for the 50 groups of three LEDs each? I was thinking of using x2 18350 Ultrafire 3.7v x2= 7.4 volts. Suggestions on more or less voltage using increments of 3.7. Infrared spotlight project. I have a PCB BOARD set up for 150x 5mm IR LED 1.5-1.6 forward voltage. Forward current is 60 mA 150 LED’s are divided into 50 groups (3 LEDs each + 1 resistor) What ohm resistors are needed for the 50 groups of three LEDs each? I was thinking of using x2 18350 Ultrafire 3.7v x2= 7.4 volts. Using the online resistor led calculator. For 150 LEDs grouped 3 LEDs + 1 resister The answer given was x50 1/2w 56ohm resister needed. Being a broke novice I don't want to order and wait for fifty wrong resisters. Do you think this is a safe bet? To better understand my confusion please refer to item #251216249922 on eBay or look up pcb board for 150 x led 3mm or 5mm. The third photo completed tells a lot. Thanks again for the help!

Topic by Magnum50ae   |  last reply


converting a 6v rechargeable halogen spotlight so it can use a standard CFL bulb. is this a stupid question?

  i have a 1 million candle power spotlight form home depot ($10) it has a 6v 1200mAh battery in it.  I want to make the rechargable light able to use low powered CFL bulbs.  can it be done?  Anyone know?   Thank yall 

Question by firemount   |  last reply


Are umbrellas parabolas? Answered

I am trying to make a homemade spotlight and I need a parabolic reflector. Instead of sketching one out on my own (which I'm only semi-confident I can do correctly), I thought it might be possible to use an umbrella coated with tin foil as a reflector. I remember reading that they were parabolic somewhere, but I can't remember where I read it. Are they parabolas?

Question by ElectricUmbrella   |  last reply


Is there a way to make an ultrasound-to-sound "audio spotlight" DIY?

Http://en.wikipedia.org/wiki/Sound_from_ultrasoundThe Holosonics Audio Spot Light sells for $2,500, and the competing Sennhieser AudioBeam sells for $4,500.Is it possible to do something like this home-made?

Question by endolith   |  last reply


How many white leds(super bright white leds) would I need to produce the same brightness as a 60w, 240V spotlight bulb.

I have a standard lamp that uses two separate 60w, 240v filament spotlight bulbs. What I want to do is convert it to using white leds or super bright white leds- one led disc to replace a bulb. What i need to know is: how many leds of this sort I would need to use on one led disk to produce the same amount of light as one of the above bulbs.

Question by mdog93   |  last reply


Has anyone put battery operated mini LED spotlights in an acrylic display case?

I was  given  a Bradford Mint 1:24 scale 1966 Mustang convertible model car for my birthday. I want to display the car in a lighted acrylic 10" cube and a 3" base. I am asking the Instructables community for their help, as I have never undertaken a project like this before.To begin the car measures about 8" Lx 4" W x roughly 4" H. Now, here are my three questions. First, would an AA battery power source run a switch plus 4 LED violet spotlights? Second, what can I use to attach the LED's to the base? And is there a way to harness the LED light to only highlight a specific point on the model car ? I have never undertaken anything like this before. And although I can picture the look I'd like to achieve in my head; I'm very much in the dark about a lot of the details needed to get the job done.Any help on any one or all four of my questions would be greatly appreciated.  Thank you, Cathy

Question by polus   |  last reply


How simple would it be to generate electricity on my model steam vehicle? Answered

I'm in the process of designing a steam powered vehicle could be tank or truck depending on how it performs with tracks. I aim to have a fully remote control tank with active flame throwers and spotlights, other additions may came later. To power the RC gear I'm happy to use battery but i would like to be able to power the spotlight which will just be LED via the engine which is going to be 4 single action pistons though i could get more (i lack the materials and tools to make a tidy double acting cylinder.) they opposed and in V formation. The size of the vehicle is gonna be roughly a foot wide, 0.5 feet tall and 2-2.5feet long. I want to know how i could do it if its possible so i know how much more i need to add to produce the electricity. thank you.

Question by Scotty3000   |  last reply


Surveillance Camera System?

Automated pan/tilt surveillance system. Camera will be mounted under/inside a clear dome. Want to add Infra-Red spotlight. If light is mounted inside the dome with the camera, I'll have reflections from the inside surface of the dome causing a problem for the camera. Can't find a "non-reflective" spray coating but even if I do, it will affect the camera view (fuzzy picture) Anybody have any ideas ?

Question by retiredlawman   |  last reply


Please help to select a power source for 100W LED?

I want to make a spotlight using 100W LED powered by a 2200mAh LiPo. I understand I need a power booster for this. Please suggest one of the correct specification. The LED: http://www.ebay.in/itm/100W-LED-COB-Chip-CW-WW-Blue-Red-Green-Super-Bright-single-color-/331632451175?var=&hash;=item4d36d59e67:m:mxsTE0PLt5bDCjp8vJJs5CQ The battery: Standard LiPo of 11.2V. max current of 55A Thanks a lot

Question by AlekhK   |  last reply


Artbot 2008!

Well, it is that time of year again. It's time to free your artbot from the closet and let it shine in the spotlight! All are encouraged to apply:We have no fixed idea of what qualifies as robotic art; if you think it's a robot and you think it's art, we encourage you to submit your work. Regardless of whether it's hi-tech, low-tech, or neg-tech, we're interested in the ideas you're working with, not just the gear. Proposals for workshops, performances, and other kinds of participation are also welcome.Check out the site for details on how to apply.

Topic by randofo   |  last reply


Switching

I have five existing wall lights that are hard wired to a single switch, running on 230v a/c It's impossible to run alternate wiring as it's all embedded in the walls (which are three feet thick.)   I am going to convert each light to be dual-function, with (a) background candle-LEDs and (b) a couple of 5w LED spotlights Already I have acquired 12v LED drivers and step-down transformers (12v to 5V) for the candle LEDs.   What I wanted to figure out was some electronincs to allow me to control them all by using the existing in-wall wires and perhaps replacing the wall switch with a push-button switch. What I had in mind was to be able to achieve different functions sequentially, possibly using an IC like a 4017. However, I'm only a beginner at electronics, and I haven't been able to figure out a way to do it.   One sequencing that would be effective, commencing with an all-off situation, would be:   1st press = candle lights only on   2nd press = LED spotlights on (Candle bulbs remain on)   3rd press =  All off   Cycle then repeats.   If this proves to be impossible, I also considered the idea of short and long presses, which could trigger a timer for the long press to acomplish some switching   The power of 230v a/c will also be travelling down the same wires to give power to the 12v LED drivers in each lamp, so I'm actually talking about sequential presses on a 230v a/c circuit.

Topic by colinstcharles   |  last reply


Our latest project

Read this description: So I haven't posted anything in a long while, and, as well as work, one of the this was down to me and a few friends getting together and forming a YouTube channel called "MTNunlimited". It started out when we did drama at school (a subject which we no longer take) we had a tonne of ideas that we never got to use, and so we can now showcase them on the YouTube channel. Recently, our local youth theatre announced it's closure this Easter, and so we've decided to offer some kind of alternative to anyone who wanted to join in with amateur film-making. Our goal is simply to have fun. If you click onto our channel here, you'll see that we still have a long way to go before we're near the same calibre as a lot of current Internet filmmakers. This is why we have turned to the instructables community for support. We have a few ideas, but we would love to hear other people's thoughts on what we could possibly base a new video on. We'd also greatly appreciate any tips or tricks of the trade that we have not yet been enlightened on. Don’t consider this ‘spam’, as that’s very much the opposite of why I made this forum topic. I posted this to hear guidance and advice from people who have a bit more experience than us. Here's a little montage I made of what we do, in the form of a cinematic trailer, enjoy! And once again, thanks for any support offered :) - Lowney

Topic by Lowney   |  last reply


Need help making large radio controlled boat

I'm planning on building a rather large radio controlled boat fro scratch, but really don't know where to start. What I have done is started designing the hull and superstructure in SketchUp, which I will chuck into Pepakura designer to make a template to cut out of either plastic sheeting or 1mm metal. I'd be glad if anyone could help me out with finding circuit diagrams, kit sets and even links of online resources. I'm fine with the actual building of the hull and superstructure, it's just everything electronic I am having difficulty figuring out. Definite specs: - 2 metres long by 40ish cm wide (6ft by 16 inches I think) - Single hull - Radio controlled, with a 600ft/ 200m transmission range Planned specs: - Preferably two motors (electric) with speed control, as I think one may not be powerful enough to push such a big craft - Servo/stepper motor rudder - Two side thrusters towards the front, one each side (no speed control necessary) - One bow-facing 'turret' with a small wireless camera on - One fixed stern-facing wireless camera - Port and starboard LEDs (on/off switchable) - At least 9 other channels available for other additions required on/off switching such as spotlights and suchlike - 2 more channels for additional servos The actual boat design at this point in time is modular, meaning that one can mix and match features such as turrets or spotlights in the four bays that are available

Question by minerug   |  last reply


Community for Artists who sell their work - lots of great features

By hand is a great place for promoting your handmade items you want to sell or finding handmade items to buy. It's a social networking community that's completely free. It's brand new, only a month old, but growing fast.http://www.byhand.meAs a member of ByHand you can take advantage of the following features:+ Free listing in the artisan directory - list all the venues you sell on and your social networks in one place+ A growing membership base+ 5K average unique visitors a day+ Member contests+ Direct consumer advertising from ByHand to buyers+ Your own blog - write your blog entry on ByHand then import it to your blogger/blogspot blog or wordpress blog - RSS for your blog posts+ Member forums+ Handmade wishlist - add favorites to your wishlist from seven handmade venues without ever leaving that venue and with just one click - you can also instantly import all of your etsy favorites for easy organization+ Spotlights - fun curated, etsy treasury-like feature that you can post anywhere with clickable links+ Window shopping - post it to your blog and see random products from spotlight submitted products+ Clubhouse - these are like groups or teams, each with its own forum+ Apply to be a featured artisan or for an artist interview, or both (details in links and opportunities forum)+ Get your item featured as item of the day+ Get additional exposure on ByHand's business page on Facebook+ Follow ByHand on twitter+ Get an ad free profile page and personalized urls for your profile and ByHand blog, add up to 5 RSS feeds+ Feel good participating in a non-profit community+ More features always being added

Topic by soapdeli   |  last reply


11-Year-Old Boy Bites Pitbull to Ward off Attack!

I'm sorry. I just had to.I saw this article and immediately thought, "This would be perfect for the "Offbeat" section back at the I'bles forums:Offbeat - Man Bites DogSee?SAO PAULO, Brazil - An 11-year old boy is in Brazil's media spotlight after sinking his teeth into the neck of a dog that attacked him. Local newspapers reported on Thursday that Gabriel Almeida was playing in his uncle's backyard in the city of Belo Horizonte when a pit bull named Tita lunged at him and bit him in the left arm.Almeida grabbed the dog by the neck and bit back — biting so hard that he lost a canine tooth.Wow.Full article here via MSNBC

Topic by Labot2001   |  last reply


DIY Green Projects - On ABC News

"We're going to look at some of the best Do It Yourself green projects" ABC just ran a piece interviewing Julie Gerstein from The Daily Green about their Heart of Green Awards.  The interview spotlighted the Trash-to-Craft Challenge in which The Daily Green teamed up with Etsy to show off green projects that highlight the resuse and repurposing aspect of the materials.  And as luck would have it, all of the projects shown in the interview can be found on instructables!  You can go check out the piece on ABC News, and check out the instructables here! In order of their appearance: #1 - Bike Chain Bracelet #2 - Tin Can Reading Lamp #3 - Succulent Plant Quilt #4 - Cardboard Chaise Lounge #5 - Vertical Vegetable Garden #6 - DIY Sock Creations #7 - Berry Picker

Topic by StumpChunkman   |  last reply


What LEDs for a light signalling system that needs to be visible at over 1000 yards?

I'm building a light signalling system for a gliding/soaring club that will be used for indication to the winch driver. This is done by means of flashing lights where the on/off timing indicates the launch phase (take-up-slack, all-out or stop). The original plan was to use car spotlights (2 x 55W) but I am considering LEDs. Assuming LEDs would be suitable for this application (I have no experience of using high intensity LEDs) can anyone enlighten me (pun intended!) on what would be the best type to use i.e. colour, brightness, quantity etc. The light will be located at the launch point (i.e. where the glider starts from) and needs to be easily seen by the winch driver who is over 1000 yards away. It needs to be usable in bright ambient light conditions e.g. on a summer's day (yes we do occasionally get them in the UK!). Thanks

Topic by Biffo Bear   |  last reply


Things to do with LCD backlight guide plate and polarisation films?

I received about 15 damaged laptop screens and took them apart to get the CCFLs and inverters which I'll combine into a modest spotlight for video recording. From each laptop I also gained some films and the light guide panel. I believe one of the films from each is just a simple diffuser whilst the other two appear to also be blurry polarisers. Finally, each screen has an acrylic light guide which refracts the light 90° and does so evenly by having some kind of bumps or dots spaced out according to the "diffusion equation" so there are more further away from the source of light (which comes from the side).  Any ideas for what I might use these films and plates? I do have a lamp project for which I can use the diffusion film but the polarising films would probably absorb too much of the light.

Topic by THX 1138   |  last reply


Color changing stage lights?

I'd like to make a light that will accommodate 2 or three light bulbs/spotlights/floodlights so that one comes on, and ideally fades into the other. It would be used in haunted houses. I am pretty sure this is a simple build, but I'd appreciate direction or advice.  Or a full on Instructable. A simple setup with a switch (foot pedal?) that simply shuts off one color and turns on another would do.  A button that begins to fade one color out and another in would be better.  One that can be set to fade from one to another automatically at a predetermined interval would be awesome. Such a setup can be used to create a transformation effect as simple as Jekyll into Hyde or as elaborate as girl into gorilla. The reason I would prefer it to be automatic is so it can be "plug and play" with only one actor, and work even if it's a different actor each night. Probably something like this exists commercially, and A), I don't know what it is called B) I'm doing it for the Boy's and Girl's club, which has no budget, which means I'm paying for it, which means it needs to be as low cost as possible. C) If I can build it well and inexpensively, I'd like to play with variations on the theme.

Topic by justjimAZ   |  last reply


Light Socket Extension help

Can you help me find a safe way to build a cheaper version of this: http://reviews.lowes.com/0534/3125483/reviews.htm?   Here's my situation: I want to convert double-lamped can lights into adjustable spotlights without making any permanent changes other than unscrewing a lightbulb and replacing it with something else.  It needs to be able to go back to a lightbulb very easily.  The cans stick out from the wall and each socket is oriented vertically, so one points up and one points down, effectively washing the wall up and down with light.  The wall of 8 or so are wired so the tops are all on one circuit and the bottoms are all on another circuit. The item from Lowe's works OK, but is $17 and more flexible than I need.  Here's what I started to put together:   At the top is a 100W Par38 spot light, screwed into a single outdoor metal lampholder.  That is attached to a 1/2" pipe (PVC or metal), about 12" long.  Now, at the bottom of the pipe, it needs to screw in to the socket to get power.  I either need to get an E27 lamp base onto that pipe, or use a two-blade outlet adapter that screws in, and get a two-blade plug that is rigidly fixed to the pipe.   Is there anyway to do this that the NEC would smile at?  Absent of that, a way that is still safe and secure, and safely removeable without changing the existing light socket arrangement?

Topic by kpatrick2   |  last reply


Instructables safety

Hi! I love the site and all of the features. I do however have one concern, that is regarding the safety of the users/builders. I believe it's just a matter of time before someone gets killed or seriously hurt by attempting some of the instructions. I've seen way too many instructions without any type of warning text or concern about user safety, these instructables often involving high voltage, significant overheating risks and high powered lasers. A couple of these have also been featured instructables. My suggestion is something like big red bar just above every page of the instructable, saying like "DO NOT ATTEMPT THIS PROJECT WITHOUT ADEQUATE KNOWLEDGE/EXPERIENCE". To make this bar show up I suggest one final pop up question before each project is published saying something like "Could building/using project possibly cause any risk of injury?" and if true the banner would appear. Admins should also be able to turn on this bar manually. I believe the current focus is to prevent project that intends to cause harm, but many other projects will likely cause harm if the builder doesn't have enough knowledge. Especially if the original maker himself also lacks knowledge about the risks with their design. I would ask you to consider not allowing instructables that involves tampering with high voltage connections if you don't like the idea of a warning banner. I don't want to see some kid loosing their eyes after attempting to build a DIY laser engraver or worse, killed during a rainstorm holding their ungrounded DIY high voltage spotlight.

Topic by johanmoberg   |  last reply


(newsletter) Auto-Aiming Missile Turret, Batman Light, Pirate Raid...

Aug 14, 2008 Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup1","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); } Welcome back! The Horny Toad Invent-a-Sport Contest has closed for entries, and is now in the judging phase. Vote for your favorites now!Everyone loves pie! Enter our Pie Contest, share your favorite recipe by August 17, and win an excellent pie cookbook to help you get your just desserts.Upcoming...Two cool new contests will be coming soon: a Faberge egg contest to show off your decorating talents and a craft skills contest to further the knowledge of the crafting ways! Start planning now, and we'll give you the full details next week. USB Auto-aiming autoturret by toelle Tennis Ball Chair by wholman How to Start a Business by ewilhelm Fabric bend sensor by Plusea Worm bin bag for indoor composting by amyoungs Floppy Disk Bag: Install Disk 2 by imanalchemist Banana Chocolate Pudding Pie by joshf Pirate Plunder! Plan a Costumed Raid by lamedust Nintendo Lunchbox by fluctifragus Glamorous Fallen Angel Wings by fairywingsandthings Grow Propagating Peppers! by thenear1send Tube Screamer clone by jonboytang Vote now! 10 great Instructables for the home Coming soon DIY USB "Hard Drive" by gmgfarrand Techno-geek Roulette by AndyGadget Stovetop Apple Pie by trebuchet03 USB Batman Spotlight by KaptinScarlet Now go make something awesome, and I'll see you next week! - Eric Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup2","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); }

Topic by fungus amungus   |  last reply


Reusing desktop and laptop monitor CCFLs and power supplies to make a floodlight

I'm using a collection of broken laptop and desktop monitors I got free from a repair workshop to assemble a floodlight/spotlight from the CCFLs and their inverters. The desktop monitor power supplies take mains voltage (240 V) and power the CCFLs but also seem to provide a 5 V and 12 V supply to the electronics that control the LCD. The laptop inverters themselves accept either 5 V in some cases or 12 V in others so naturally I want to run the laptop inverters off the 12 V and 5 V supply because otherwise it's wasted. The problem is that I don't know how much power I can draw from the 5 V and 12 V of the power supply. I've had a look at the back of a monitor that says it draws 0.7 A at 240 V. What translates to 168 W which is more than I was expecting. Assuming that the four built-in CCFLs use 8 W each, that would still leave 136 W. Assuming the power supply is only 60% efficient that leaves (168 W x 60%) - (4 x 8 W) = ~68 W. I've no way to tell how that's distributed across the 12 V and 5 V but if it's 34 W each then I can draw 2.8 A from 12 V and 6.8 A from 5 V? I figure I can probably, maybe attach eight laptop inverters to each desktop PSU (four on 12 V (1.6 A) and four on 5 V (4 A)?

Topic by THX 1138 


why do halogen lights keep blowing? Really scared of fire!

I live in a rented attic flat and just before Christmas four of the ceiling halogen spot lights in my hall and livingroom blew.  I called the landlord (he is an electrician) and he replaced them - then charged me £50!  Two days later the same lights blew again.  There seems to be condensation or something around a couple of the bulbs. (They are sunk in the ceiling.) The next day I went away for two weeks for Christmas, came back yesterday and this morning there was a 'pop' noise and all the five lights in my bedroom blew. (I hadn't just turned them on. They were already on.)  I can't locate the fuse box and I am worried about an electrical fault causing a fire.  It is a new flat (five years old, and the landlord did all the wiring - he is an electrical contractor.) I have to be out all day tomorrow, leaving my little dog there, and I am scared there will be a fire.  I am going to speak to him tomorrow and try to get him to come and sort this out tomorrow night when I get in, but it took ages to get my landlord to come and sort the last thing out, I am living in semi-darkness, and I can't afford to pay hundreds of £ every time the bulbs go.  I have only lived there three months.  What should I do?  Is it safe? I would feel better if I could turn everything off at the mains before going out tomorrow, but I don't know where the thing is to do this - and I don't want to meddle with stuff I know nothing about.  

Question by Mandylou2014   |  last reply


Cosplaying next August, any one else?

Hey every one, huge making project coming up for me (in terms of time, not size) because I'm going to SMASH! Cosplay Convention, Sydney, Australia in August 2010. I'm going with a group of friends from my school as Vocaloid characters and I get to be Kaito! Would any one else in Australia be going? Any way, it should be awesome and I'm excited like hell even though it's 9 months away. I'll keep every one posted on how the out fit's going, I'm going to see if I can get the wig off eBay next week. Then we're all going to Spotlight (fabric store) a little after christmas to get a tonne of the same fabric, but different colors for each character. Then I'm doing the scarf, then the pants, then the undergarments and then the coat. Any tips and tricks would be greatly appreciated, I'm not amazing at sewing but it should turn out alright, I'll probably start the coat about 6 months from now because I don't want to grow out of it before the convention! By the way, any tips on dying my hair / getting a wig of bright blue? And also, dying my eye brows? (God, this'll look weird at school...) Update #1        18/10/2009 More pictures. I've added some drawn pictures (mine) of my design, you can see the front and back here. First picture: Another cosplaying Vocaloid group, but no Gakupo or Megurine Luka. I'll be the one at the back left. Second picture: SMASH! convention logo.

Topic by Kryptonite   |  last reply


Remotely controlled starship

Hi,I hope this question is appropriate to this forum, I'm new here, but I'm about to start building a PolarLights 1/350th scale Enterprise. If you're unfamiliar with the kit, it's styrene, large and very cool. Get one to express your innner geek.Anyway, I want to hang it using steel wires, painted flat black and it will be displayed against a black background, with the illusion, I hope of it floating in space. I plan to run power to the model via the wires, like those little track bar lights you might find in a coffee shop.All the electronics for the ship will be inside (it's a big kit) and I have the schematics to make the lights blink and the photon torpedos fire. But I don't want the torpedoes to constantly fire. I'd like to be able to push a button and have them fire. But with only three wires going to the model, I can't control the navigation lights, strobes, impulse engines, spotlights, etc.I could install DIP switches in some inconspicuous spot, but how much cooler and geekier to trigger the effects from an infrared remote control shaped like a tricorder?I have found a company that sells a remote (I'll have to hack it into a tricorder), a sensor and a PIC preprogrammed chip to decipher the remote codes (http://kitsrus.com/pdf/k92.pdf), but the schematic shows that all the outputs are high. Pressing a button on the remote sets the appropriate output low.So, can anyone suggest what I can do to trigger the effects? They sell a more expensive and I'm sure much heavier kit with relays (http://kitsrus.com/pdf/k142.pdf) that actually reverses the outputs -- pushing a button sets an output to high -- using inverters. (They also sell a kit with four relays, using a UHF transmitter -- a car remote.)But I'd like to do this without a relay. I know very little about electronics -- just enough to follow a schematic and wire it, hoping there are no mistakes in the schematic. But I thought a transistor, like an SCR thyristor, could be used as a switch. Could I take the first kit I mentioned, add the inverter to switch the output to high when a button is pressed, and use the thyristor to basically be a solid state switch? Essentially doing the work of the DIP switches?I fear the 5V outputs of the PIC module would be too high for the thyristor and maybe that's why the relays are necessary.I appreciate any help and advice.JenniferPS All the kits I mentioned are at http://kitsrus.com/kits.html

Topic by virtualight   |  last reply


User profile pages have been changed, for the worst

Instructables has reworked user profile pages in a radical way. Profile pages are now wholly different from what they used to be. Content is no longer divided by its type (instructable, forum, comment, favorite, etc.), it is divided into two sections: the user's projects...and everything else. The section on everything else encompasses every activity related to the user in question. This cluttered list of activities can include everything from viewers favoriting the user's projects, replies to the user and even (deleted) spam comments left on the user's projects. There is no way to divide things up to look at them by their individual types--you must sift through everything manually. As far as the user's content goes, only five projects are visible to the marauding viewer at a glance. There is no indication to viewers over how many projects have been posted by the member in total. Versus the previous layout: Fewer projects are being shown The total number posted by the user is now unclear The number of subscribers had by the user is now unclear The 5 projects which are shown are displayed with smaller images than before. Absolutely every aspect of presentation was superior under the old layout. The only vaguely positive new development is the ability for an author to control what five projects they desire to spotlight. In light of the massive costs, it is not a major plus. If the viewer does make their way to the page which carriers all of a user's projects, they will again find its contents unfiltered. There are no filters to weed out content by featured status, views or popularity. There is still no indication of how many projects there are either. Patches do not appear to be of any value anymore, as they are nowhere to be seen on profile pages. ------------------------ This change has destroyed profile pages. I have been around Instructables for many years and have seen many layouts--this layout is, without a doubt, the worst yet. The layout of profile pages must be reverted to the previous style. Content is being downplayed like it never has been before. Most of a person's profile page is now dedicated to what other people have done. Users' profile pages--what were once pages dedicated to their stuff--are now dominated by others' stuff. When a user goes to my profile page, I want them to see what I have posted. That is why they went there--to see my content. They are not there to look at others' content. Under this new layout, viewers will have to work harder to find results on these profiles and are more likely to lose interest in the content of the user. The lack of intuitiveness to the layout will only aggravate and put off viewers. Content creators will probably bear the brunt of the fallout of this change if it's not quickly undone. Interest in and viewership of their content will likely decrease in time if things do not change. In turn, content creators may decide not to withdraw and discontinue sharing their works. Whomever made the layout what it is now may have had the best intentions. However, it is time to accept the fact that the new layout is completely inferior to the previous one and that it needs to be scrapped.

Topic by OrigamiAirEnforcer   |  last reply


Jurassic Spark kids game: how to distribute fun more evenly?

I recently made up an outdoor kids adventure game that is really fun for most, but could use help with making the game more fun for all the kids. I conducted an anonymous survey afterwards and a few kids were sad that they didn't get to find the batteries (explained below). My question relates to this. I'm asking here because I figure teachers have tons of experience with kids!The game is called Jurassic Spark. I've written up the details with lots of pictures in this Instructable for the game, but I'll summarize here:Target kid age: 4 to 7 years old (although I plan to continue adapting as kids get older) Scenario: The Jurassic Spark electrified fence has lost power and many dangerous dinosaurs are on the loose. Can our brave explorers (kids) find the high power batteries to energize the fence before it's too late? Watch out for the T-Rex!Player roles: explorers (kids), small dinosaurs (adults), and the terrifying T-Rex (adult)!To win: the explorers need to find and return the 6 high power Batteries back to the Power Station to energize the electric fence before the dinosaurs tag all the explorers. Because the kids are young, the dinosaurs (adults) aren't playing to win, just to make it an exciting challenge. The game lasts around 15 to 20 minutes.Getting tagged: When a dinosaur tags an explorer, the explorer has to freeze and put their arms out like in freeze tag. Frozen explorers are encouraged to yell for assistance "Help! Help! A dino chomped me!" and can be unfrozen by being touched by another free explorer.Tail stealing: The explorers are not completely defenseless, however. The small dinosaurs have tails that can be stolen and they hate that! "Roar! Who stole my tail!?" Tail lacking dinosaurs must return to the dinosaur pen before they can regrow their tail and return to hunting. I feel that this is a very important part of the game as it brings balance and a whole lot of fun. It also encourages lots of exciting team building as kids will often gang up on a dino to take it down or distract it. Once the electric fence is powered up, dinos that have their tails stolen are trapped in the pen until the game ends (usually only a minute or two).T-REX: To up the level of excitement, we add a T-Rex wild card into the mix! The T-Rex cannot be stopped and loves chomping on explorers! There's nothing quite like seeing a giant roaring T-Rex head chase or stalk their cute tiny prey :)We played the game with 20 kids, 6 small dinosaurs, and 1 T-Rex.Question: How can I make the game more fun for the kids that feel left out because they didn't find a battery? We made a rule that a kid can only return one battery per game, but there are 6 batteries and 20 kids. The older kids tended to find the batteries each game. My gut is telling me that I wouldn't be able to handle a game with 20 batteries.The part that makes this extra challenging is that the kids are young and I can't make too many complicated rules. We'll add complexity as they grow older with tranquilizer darts and stuff like that :)If you are interested in reading all the survey feedback, it is near the bottom of the Instructable.Thanks!Adam

Question by afraser-kruck   |  last reply


Top 50 2008: Instructables

Yesterday we looked at the Top 50 commenters for 2008 and today we'll be looking at the numbers for the top 50 Instructables of 2008. Since there's no one way of declaring a list of Instructables, we created three top 50 lists. These cover Instructables in order of rating, pageviews, and comments. Instructables on these lists were all published in 2008.Let's go to the graphs and charts!Top 50 Instructables: Pageviews   Instructable Views 1   Body-Mod: Elf Ears 347738 2   Use your laptop as an Xbox/Xbox 360 "Wireless Adapter" on Windows XP/Vista, and Mac OSX 220780 3   Fix the Red Ring of Death! (without towels!) 177285 4   Laser cutter, start slicing stuff for under 50 dollars 159647 5   Run Backups on any Wii Without a Modchip 159408 6   How to build a 72Volt electric motorcycle 159261 7   How to make out 145713 8   Inverted Bookshelf 137198 9   Munny Speakers 124736 10   Awesome led cube 118293 11   Firefox Pranks! 117449 12   How to make an Iron Man Arc Reactor 116481 13   How to French Kiss 115958 14   How To: Make Bath Bombs 108287 15   Gift Ideas 107914 16   DIY USB "Hard Drive" 96588 17   Safely Shaving Your Pubic Hair 96144 18   WinXP Overhaul Guide: How to make it look like Vista, run like lightning, and stay productive, fast & smooth 94980 19   Laser Tattoo 94705 20   DIY Vinyl Wall Art 92752 21   How to refill a "disposable" Brita brand water pitcher filter with activated carbon. 89724 22   Make your own Roll-Up Keyboard 89558 23   Hidden USB Storage 86430 24   how to add EL wire to a coat or other garment 84340 25   Build a 60 Watt Solar Panel 82286 26   Grow a square watermelon 82275 27   LeGummies brick shaped gummy candies 81368 28   USB 80875 29   How to remove most of the seeds when cutting up a watermelon 80822 30   How to Make a TRON Style Lamp: The MADYLIGHT 80281 31   LED Cube 4x4x4 78936 32   Covert Spy Sunglasses 78633 33   Build a water mortar 77090 34   Super Nightvision Headset Hack! 76634 35   A better laptop stand for bed 76101 36   Amazing plasma globe tricks that you never knew before!!! 74842 37   How to get a Free Itunes Account (No Credit Card Needed) 74490 38   Make an iPod Video Projector 74026 39   Homemade Gifts 73478 40   Lasers 73242 41   Remote shutter trigger for Digital Cameras 72911 42   Ergonomic Laptop Stand Made From a Coat Hanger 72321 43   MAKE A HIGH VOLTAGE SUPPLY IN 5 MINUTES 71744 44   Protect Your Home with Laserbeams! 71387 45   Iron Man Helmet 71358 46   Get Big Money for Dead Batteries 70261 47   How to Put on a Condom 69805 48   How to make an Iron Man Mask 69617 49   How to build a 96-Volt Electric Motorcycle 68924 50   Nintendo Lunchbox 68164 Top 50 Instructables: Ratings   Instructable Rating 1   Build A Plasma Speaker 4.64 2   Build A Net Gun 4.62 3   Wall-E Robot 4.60 4   Sew your own Instructables Robot Plushie! 4.60 5   How to Make a Portable Game System 4.54 6   Build Your Own Butler Robot!!! - Tutorial,Photos, and Video 4.54 7   Electromagnetic Floater 4.52 8   LED Cube 4x4x4 4.50 9   LeGummies brick shaped gummy candies 4.49 10   DIY Vinyl Wall Art 4.49 11   5-minute Chocolate Cake 4.48 12   When a Phillips is not a Phillips! 4.48 13   Airgun with eXplosive air-Release Valve 4.47 14   How to Build a Robot - The BeetleBot v2 ( Revisited ) 4.45 15   How to Start a Business 4.45 16   Gandhi: 17' Tall Cardboard Avatar 4.44 17   turn signal biking jacket 4.44 18   Hidden USB Storage 4.44 19   Cyber/Steampunk Futuresque Sci-Fi Hand Gun 4.43 20   LED Chess Set 4.41 21   Build your own Electric Car! 4.41 22   LCS-1M - A Full-Featured, Low-Cost Hobby Oscilloscope 4.40 23   Build a World's Smallest Electronic Shocker! 4.39 24   Lego USB Stick 4.38 25   MAKE A PILLAR WITH A DECORATIVE CAPITOL AND BASE 4.38 26   EGG FLOWER VASE 4.38 27   Aliens Powerloader Halloween Costume 4.38 28   Munny Speakers 4.37 29   Giant 100mm LED 4.37 30   Coilgun Handgun 4.37 31   How to Thank Instructables 4.36 32   Guitar Tube Amp 4.36 33   How to get a Tshirt for GoodHart 4.34 34   Creepy Cobweb Shooter! 4.34 35   Grow Your Own Bioluminescent Algae 4.32 36   How to make a Portal Gun 4.31 37   how to add EL wire to a coat or other garment 4.30 38   Duct Tape Messenger Bag + Hardware 4.30 39   Firearm Safety: The "do's" and "don'ts" of enjoying guns safely. 4.29 40   The Stirling Engine, absorb energy from candles, coffee, and more! 4.29 41   Recycle Old Light Bulb 4.28 42   USB Batman Spotlight 4.28 43   Coffee table upgrade! 4.27 44   Steampunk Dystopian Sniper Rifle (Mercury Bow) 4.27 45   Building Small Robots: Making One Cubic Inch Micro-Sumo Robots and Smaller 4.27 46   How to grow flowers on a military base in Iraq 4.26 47   How to make your own LED lightbulbs 4.26 48   Iron Man Helmet 4.25 49   Cardboard/Fiberglass Halo 3 inspired Master Chief Costume 4.25 50   Build Halo Armor 4.25 Top 50 Instructables: Comments   Instructable Comments 1   Build a World's Smallest Electronic Shocker! 812 2   Knex Heavy Cannon 645 3   Awesome led cube 637 4   Simple Xbox 360 Rapid Fire Mod 591 5   Build A Plasma Speaker 494 6   DD-27 V2.75 compact AST rifle 454 7   WinXP Overhaul Guide: How to make it look like Vista, run like lightning, and stay productive, fast & smooth 453 8   The accidental pocket jet engine... 427 9   Scavenge free electronics, food, and help the environment 400 10   How to make your PSP "Better" or how to have more fun on a Sony PSP 379 11   Laser Tattoo 376 12   Amazing plasma globe tricks that you never knew before!!! 376 13   DSman195276's sidearm --updated-- v1.5 is here! 371 14   MAKE A HIGH VOLTAGE SUPPLY IN 5 MINUTES 363 15   Wall-E Robot 352 16   Knex Heavy Cannon v5 - Handheld 342 17   Fix the Red Ring of Death! (without towels!) 341 18   How to Build a Time Machine (Vortex Distortion Space and Time Dilating Device) 340 19   Knex Heavy Cannon v2 - Mini 339 20   How to get a Tshirt for GoodHart 338 21   Run Backups on any Wii Without a Modchip 336 22   Make A Water Leyden Jar 331 23   Park 52 knex sniper 327 24   Build a simple Marx Generator 323 25   Knex Guinea Pig Trap 318 26   TRUELY semi-auto knex gun 315 27   L96 308 28   How to Build a Knife 307 29   Pineapplebob's Sniper Rifle 306 30   True Trigger, 10 Round, Auto-Loading, Knex Concept Rifle 299 31   Fire Shaving 290 32   DJ Radio's knex SPEC-9 sniper rifle 285 33   How to UPGRADE from Vista to Windows XP on an Acer laptop 283 34   How to dodge a draft 279 35   Protect Your Home with Laserbeams! 279 36   Hidden USB Storage 277 37   Knex Compact AST Pistol 276 38   Cyber/Steampunk Futuresque Sci-Fi Hand Gun 276 39   Steampunk Dystopian Sniper Rifle (Mercury Bow) 275 40   Pocket sized survival kit 274 41   Knex Pistol "TDS" With Simple Slide Action *Updated as of 8/26/08* 271 42   Use your laptop as an Xbox/Xbox 360 "Wireless Adapter" on Windows XP/Vista, and Mac OSX 269 43   Body-Mod: Elf Ears 266 44   Knex M4 Carbine (True Trigger) 257 45   How to make a Portal Gun 255 46   DSman195276's sniper rifle 254 47   Reaper Crossbow 254 48   fully automatic knex gun (UPDATED) 252 49   Build your own computer 252 50   LeGummies brick shaped gummy candies 252

Topic by fungus amungus   |  last reply