Help me reproduce this door here look http://www.livescience.com/9310-high-tech-door-star-trek.html
Asked by tinker234 7 years ago | last reply 7 years ago
Is a possible way to super cool a gas (nitrogen or oxygen) to liquid temperatures by using a sub-zero tank of 5000 psi compressed air to blast that gas over a radiator and therefore cool the gas in the radiator to a liquid, then quickly pump it to a chilled high pressure insulated tank.
Asked by jj.inc 7 years ago | last reply 7 years ago
Well im about to be 21 soon and im looking for cool alcoholic ideas, such as vodka gummy bears, and the vodka clementines. something i can use alcohol in so i can get drunk from it. Other than jello shots and mixed drinks. Sorry i can't explain better and i hope someone has a cool idea.
Asked by noname420 9 years ago | last reply 8 years ago
I'm building a power supply for my cnc machine that gives off about 37volts at 8 amps, and 12 volts at 0.9 amps. All of the transformers are from radioshack (using 6 heavy duty, 25.2volts, 2 amps transformers, 4 in parallel giving off 25.2 vdc at 8 amps, and 2 12.6 volts in parallel. Together in series gives about 37 volts at 8 amps. using 1 25.2 volts 450mA transformer, center tapped) My case does not have enough room for proper cooling such as fans. My case is water tight though, should I fill it up with something like mineral oil to keep the transformers cool?
Posted by guyfrom7up 11 years ago | last reply 11 years ago
So in the last week I've had loads of comments from mates and stuff about my shirt, just stuff like 'aww sweet shirt is that a robot, where'd you get it' and I realised instructables is pretty cool, it's now in the running for coolest shirt I own, though my famous target t-shirt wins along with one of the ACDC I got recently (so what if i already had three different ones) but people are like 'wow robot' so I turn round and they take the address. hopefully they'll buy a few raising funds. ok woulda had a nice wee photo but my camera's being a tit.
Posted by killerjackalope 10 years ago | last reply 10 years ago
I'm a sucker for statistics. Check out what I Stumbled on.This website lets you see statistics on just about any forum or message board on the web. It's pretty insane.As an example, here's some stats on the Community Blog forum.On this particular forum, Goodhart has had the most posts this week, followed by Adrian Monk and then Keith-Kid. With Labot2001 at a strong tenth. ;-)Just thought I'd shared something of interest ;-)
Posted by Labot2001 10 years ago | last reply 10 years ago
My idea is that instead of putting ice in the same spot as the beverages, you put them away from them. In the cooler, instead of four walls and one bottom, there would be eight walls and two bottoms. In the inner walls(the walls in the cooler) will carry ice water(with salt to make it colder perhaps?) and so would the very bottom. The center will of course carry the beverages which would become cold by the ice from the bottom and the sides. For a lid, I was thinking of just plain of latches, or a ledge on all four sides to support a lid. Also, which is better for a cooler? Foam or plastic?
Asked by Rock Soldier 9 years ago | last reply 8 years ago
Hey whats up the names Jason. I am 13 and like to play with computers but not like Halo (although i am guilty of occasionally playing Halo) what interest me is computer logic and programming. So right now i am half-way decentish with Qbasic and consequently Visual Basic, but the language i am most fluent in is just plain old DOS scripting (batch files). My math teacher at the begging of the year my math teacher announced that once o twice a month we would have a pop quiz on square roots and squares of numbers 1-20. Now to say the least I am poor with memorization. So i tried flash cards and starin at a sheet with the squares and square roots on it. but I was pretty consistently getting 60s and 70s. Now being a pretty good student this upset me and my parents weren't exactly happy. So then i decided i would make a batch file to quiz me on this, my first one was on sqrts. writing this took forever so even still i made another for squares. These programs help me study immensely and i now get a perfect 100 every quiz.. i then started thinking that there must be a way to speed up the writing of a simaler quiz program. thats why i wrote this, and i know it is probably mediocre but i like it so be nice. (You can do whatever you want with this source code, and while not required i would prefer credit if you distribute a mod of this batch file.)Here it is:rem The purpose of this batch is to automate the process of making another batch that is used to quiz a person@echo off:startclsEcho Make a Quizecho.echo.rem this part creates a variabl that wil be used in creating the final batch fileecho enter the name of the fileecho .bat wil automaticaly be tacked ont to the endSet /p filename=echo.echo.rem This just creates a ariable that is the title of the the game to be createdecho now enter the title of the quizset/p title=echo.echo.rem this is where the user inputs question part one and it becomes a variableecho enter question part 1Set /p quespt1=echo.echo.rem this ask for the second part of the question echo enter qeustion part 2set /p quespt2=echo.echo.Rem this declares some variables just for shorthandset line=echo.set ec=echoRem this creates a file that user named a while back and then fills it with some preliminary textecho @echo off>%filename%.batecho :start>>%filename%.batecho cls>>%filename%.batecho echo %title%>>%filename%.batecho %line%>>%filename%.batecho %line%>>%filename%.batrem this part is called midstart because ideally later you can repeat this multiple times depending on how long your quiz isset next=0:midstartset /a next=%next%+1rem now we ask for the question of the questionecho now enter the question for the current questionSet /p questmp=echo.echo.rem now we ask for the answer for that questionecho now the answer to that same questionSet /p anstmp=rem More txt inserting (the %%answer%% is used so that in the batch file being created it shows up as %answer%)echo echo %quespt1% %questmp% %quespt2%>>%filename%.batecho set /p answer=>>%filename%.batecho if %%answer%% == %anstmp% goto next%next%>>%filename%.batecho echo you lost>>%filename%.batecho pause>>%filename%.batecho goto start>>%filename%.batecho :next%next%>>%filename%.batecho echo You got it right>>%filename%.batecho %line%>>%filename%.batecho %line%>>%filename%.batecho you have asked %next% question(s)echo.echo.echo If you would like to make a new question simply type "n" and press enterecho However to input your last question type "l" and press enterset /p endchoice=if %endchoice% == l goto endif %endchoice% == n goto restart:restartgoto midstart:endset /a next=%next%+1rem now we ask for the question of the questionecho now enter the question for the current questionSet /p questmp=echo.echo.rem now we ask for the answer for that questionecho now the answer to that same questionSet /p anstmp=rem More txt inserting (the %%answer%% is used so that in the batch file being created it shows up as %answer%)echo echo %quespt1% %questmp% %quespt2%>>%filename%.batecho set /p answer=>>%filename%.batecho if %%answer%% == %anstmp% goto next%next%>>%filename%.batecho echo you lost>>%filename%.batecho pause>>%filename%.batecho goto start>>%filename%.batecho :next%next%>>%filename%.batecho echo you won>>%filename%.batecho echo !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!>>%filename%.batecho %line%>>%filename%.batecho echo click to exit>>%filename%.batecho pause>>%filename%.batEcho And thats it your doneecho.echo click to exitset /p end=And thats it so have fun and feel free to comment
Posted by lemonshark10 10 years ago | last reply 10 years ago
Hi, all! I foster dogs and cats in Baton Rouge for several non-profit agencies. Lately, I've had more than a few feral cats needing a temporary home. I had an idea (inspired by something I saw online) to use the trunk from the crepe myrtle tree my boyfriend chopped down to "catify" the carport where they like to seek shelter at night. Considering that I've never owned a power tool until now, I think it's coming together nicely so far (pics attached). Please keep in mind that I'm no carpenter.... This is south Louisiana where the Summer temps are high and the humidity is even higher. I can only imagine how awful that must be when you are sporting a full fur coat outside! Here's where I need your help: I want to make cool gel mats to fit the odd shaped green shelves you see attached to the walls. I have been sewing for many decades, so making these "cool" cushions to fit is not a problem. The problem is how to make the GEL that goes inside the mats that keeps the pet cool. I'd rather not use any toxic chemicals, just in case one of them punctures the gel mat causing it to leak and then decides to drink the gel. So, maybe there's a chemist out there, or just some intelligent individuals that might have the answer to my problem? Any and all suggestions are very much appreciated! Thank you, Linda
Posted by Lbcaswell 1 year ago | last reply 1 year ago
I am the kind of person that flips over his pillow every fwe minutes so my face can be on the cool side for a bit. I was wondering if anyone has ever created a pillow that keeps one side cool the entire time. Can anyone help?
Posted by astrozombies138 11 years ago | last reply 2 years ago
Hi, my name is Michael and I'm from Austria. Nowadays we have about 38°C (100°F). We have a Terrace which has a area of 33m² (355.21ft²). This terrace has a roof, which consists of polycarbonate plates. We have the problem that it is very hot on our terrace although we use awnings. Now I've discovered some ideas how i could cool down our terrace. The first one could be a water cycle, with a container and a pump. Then the pump could pump up the water. The water flows down the roof and flows back into the container. I don't know if this is a efficient way to cool down our terrace? The 2nd possibility I discovered is water mist. I found this video to show the principle: http://youtu.be/bYTcMCm2zWg I don't know if it is possible to sit underneath the water mist without getting wet?? I just want some Ideas and oppinions. Maybe some of you have realized their own cooling system? I know how to program an Arduino and other microcontrollers and I am able to develop electronic circuits. So I think i have the basic knowledge for building such a system, but I can't decide which principle i should use? I am sorry for my bad english skills, but i hope that you can understand me. Thanks in advance Mike
Posted by MiKe1753 5 years ago | last reply 5 years ago
I'm tying to setup a 12 volt 2.5 amp injector cooling fan in a car and I want the fan to turn on for X minutes right after the ignition key is OFF. I was looking at this programmable relay - https://www.amazon.com/Miniature-cycling-Cycling-Industrial-control/dp/B015Z2EQCU/ref=pd_lutyp_simh_1_3?_encoding=UTF8&pd;_rd_i=B015Z2EQCU&pd;_rd_r=5202NNSP2PM3EE5DZVTA&pd;_rd_w=SKMnb&pd;_rd_wg=rJ4Td&psc;=1&refRID;=5202NNSP2PM3EE5DZVTA Here is the website for that relay with instruction manual - http://www.3rdbrakeflasher.com/ I'm not sure if I need another relay and hook to 87a or if there is a better circuit I can make.
Posted by pphantom 1 year ago | last reply 1 year ago
These are some good papercraft links.. at least by my standards...Canon 3D PapercraftVarious papercraftYamaha Motor PapercraftPapercraft motorcycles and such. There's also animals Professional Level.papercraft space vehiclesUm.. I don't really know anything about this one..I just found itPaper robotsI like this one. Transformers that really transform. And various other robots..3d Paper ModelsRecommended by jtobakoIceberg PapercraftsRecommended by jtobakoPaperToys.comRecommended by SFHandymanFlying-Pig.co.ukRecommended by SFHandyman. I believe you have to pay for some.(Some Free models can be found hereHalo 3d PapercraftGreat site recommended by Chicken2209. Requires Pepakura. (For more info on Peparuka, and how to use it, click hereNintendo PapercraftRecommended by xupower. The name says it all.Paperkraft.netRecommended by GorillazMikoPapercraft ParadiseBlog Format. Great stuff.If you know of any papercraft sites, plese list them below. Enjoy!
Posted by Keith-Kid 11 years ago | last reply 1 year ago
I am currently gathering information about vortex tubes for my repulsine project. There are plenty to choose from on a commercial base but I struggle to find any technical drawings with proper dimensions. Several home made varities can be found as well but wither with poor performance or incomplete drawings. So I was thinking that someone here either uses a commercial product at home or work and might be able to take some basic measurements for me? I am most interested in the relation between inner tube diameter and lenght for the hot and cold ends as well as the size for the vortex chamber itself. If there is an orifice used on the cold end the hole diameter would be required as well. My aim is, based on a properly working original, to create a device that might be less efficient but can be used without a compressor. Would like to see, correct transfer of dimensions given, a vortex tube like system was used in the repulsine. Some old documents state that there was a "seperator" which removed "heavy air particles" and created a temperature differencial between top cone of the repulsine and the wave disks.
Asked by Downunder35m 3 years ago | last reply 3 years ago
Asked by XxAwesomexX 9 years ago | last reply 8 years ago
I have set up the underfloor tubes for heating but still havent bought the pump and the heater core so i`m thinking of trying to cool the floor and hope to cool the room cos its unbearably hot. small pump 3w running ffrom a 5w (i think) solar panel cold water in a bucket and add ice cubes from time to time ???
Asked by turbiny 2 years ago | last reply 2 years ago
I've heard of a form of cooling done by lasers known as "doppler cooling" because it is based on the Doppler effect. I think this is neat and would like to try to make a laser cooling device. I can't seem to figure out how though. I did some google research and all I get is cooling options for lasers rather than cooling options from lasers. What wavelength would you need to do this? Is there a particular way to do this rather than just shining a laser continuously at an object needing cooling. Would this work through a translucent object? I appreciate any help or guidance you could offer.
Asked by mykiscool 3 years ago | last reply 3 years ago
So I'm going to be making a full-body space armour type costume (Samus from Metroid Prime) eventually and I want to try to design an active cooling system that isn't too heavy, can be concealed within the costume, doesn't require too much replacing of coolant , and doesn't use obscene amounts of energy. I know the way it's done in commercial active cooling vests is that they run ice water through plastic tubes in a vest. The problem with this is that there is a big, huge tank of water with a big pump that the vest is tethered to and it needs to be plugged into an outlet. The way I'm thinking of doing it is by putting a network of copper wires in the garment I'll be wearing under the armour that lead to a cooling system in the back of the suit that, right now, I'm thinking will involve ice packs and/or a fan array. I feel like it might not work, so the alternative is to design a custom water or liquid cooling system. I'm planning on using lithium ion batteries for the cooling system and lights if I can. Any ideas or suggestions?
Posted by Icetigris 10 years ago | last reply 8 years ago
Is there a better way to do this? I was thinking of this , instead of taking your lunchbag to the fridge at work to have the lunch theives scavange it, Have a USB Cooling Lunchbag. I made a prototype but am missing the Peltier unit. Go straight from home to your desk, and keep your lunch cool the whole time instead of a hard cooler. Then unplug it from your usb port and tuck the cables in the pouch, an go. can someone tackle this ?
Posted by yogadude 10 years ago | last reply 10 years ago
Recyle your old broken hard drives. Take them apart and scrounge the powerful magnets out. They make great ways to attach anything to your fridge or metal surface. See my 64 Corvette Stingray Fridge Magnet Instructable. It has flashing tailights! As ever -TRIUMPHMAN.
Posted by triumphman 10 years ago
This article in the Orlando Sentinel does a nice job of giving an overview of a few people in the DIY community. They even give Instructables a nice mention and then go on to talk about this guy:He has posted more than 50 projects on Instructables, including a sound-activated camera made from a disposable camera and an old computer speaker, and a method for taking ultraviolet photography using a broken black-light bulb.Hmm... who could that be? Link
Posted by fungus amungus 9 years ago | last reply 9 years ago
Title says all it is very random and cool so join it now.
Asked by BIGHAIRYDUDE 8 years ago | last reply 8 years ago
Where is it
Asked by XxAwesomexX 9 years ago | last reply 9 years ago
Just want something to work with
Asked by KIPPstar 9 years ago | last reply 6 years ago
I went out to the car yesterday at around mid-day and saw what I THOUGHT was the light of the sun refracting off the trunk lid of my car......I WAS WRONG. I looked up into the nearly cloudless (except in one area) sunny sky, and saw two large clouds "near" each other; with a HUGE bright rainbow in between them. This is the first time I have EVER seen a rainbow in a sunny, rainless, snowless day. Below is a Close up and a normal sized picture of the bow. In the second picture, there is a speck up there, that is a crow, IIRC.
Posted by Goodhart 8 years ago | last reply 8 years ago
Hello everyone!. i was thinking of making a air cooling system, based on thermoelectric elements. maybe use 3-4 thermoelectric plates (at 12V, i don't want to exceed 30amperes ). do you guys think that it will be enough to cool a car cabin?? or what do you think?? (yes, i know that the same can be achived using the existing technology with ac compressors :P )
Asked by settra 4 years ago | last reply 4 years ago
Hi instructables...I have made a small electromagnet for a project of mine....actually I made it to make an electromagnetic or relay switch...I intend to use it in a robot...I have this awful problem..it keeps getting hot..I would really appreciate if you told me a way to cool it down...and increasing the number of turns of coil or using less voltage or current is not an option...is there any other way...I used a cooling fan but it didn't work...so is there any other way?
Asked by Wisaam 6 years ago | last reply 9 months ago
I have my workshop building i am trying to cool without spending a 1000.00 bucks. I havea small chest freezer forget the cubic feet but it is around 2 ft. by 3ft. in size. I was wondering if i fill 75 5 full of water and instal a coil of 100 feet of 3/8 copper tubing in a coil on the inside running to a 36 inch fan with 75 ft of 3/8 coil on the front and set it to pump 32 degree water to the fan . Do you think this woudl bring a 10ft by 16 ft building down from 100 to 80 degrees ? This would probably be cheaper on electricity over all than a a/c if i could afford one. Can anyone share there thoughts? Thanks alot Andy
Asked by andy1917 7 years ago | last reply 7 years ago
I am planning to make a motorized shoe (you strap your shoe to it) and the design and every thing is mostly worked out, but I don't know what motor to use, I was thing this: (http://www.jaycar.com.au/productView.asp?ID=YM2712) Would two of these work, one for each wheel, then would I be able to connect it to the wheels axel, I will use scooter wheels or something similar, kind of like this: (http://www.kickstarter.com/projects/petertreadway/spnkix-wearable-mobility) , but the shoe will be on top of it and there will be a non-powered wheel at the front, any help with the motor etc, would be great.
Posted by ModderMan 6 years ago | last reply 6 years ago
I just discovered that when you search "really cool stuff" on Google that Instructables is the second one on the list. I think that that's pretty awesome. (don't ask why I searched "really cool stuff" on Google..) -Tqwerty
Posted by tqwerty 7 years ago | last reply 7 years ago
Hi everyone, Just checking in from Taipei Hackerspace. We have just finished out Build Night last weekend. It was 5-6 of us hacking away on electro-luminescent wire projects. Started in the afternoon, fortunately got dark by the time we had anything to try. The results are: [Hack] light into the night, and maybe even party Simple neon display, or pimped up to be light beats for music Galloping horse display Animated display, go horsie go! There are more photos on our Facebook page. It was fun, with some lessons learned: * I should have checked out the hardware we get before the event, had to scramble to find some example code for the Cool Neon Shield, how to use it * the Shield behaves a bit weird, when the driver is used in the "on" setting (as opposed to "blink"), the light "latches" - once the arduino turns it on, it won't turn off until the power is removed. Worked around this by using things in blink mode, but not idea * will have to use a wall-plug driver for the shield later, as the batteries are not powerful enough to make it look good when more than one EL wire is on (it's brighter on the pictures/video than with eyes). * people love things that light up :) Cheers! Greg
Posted by taipeihackerspace 4 years ago
Here is a link to a listing of really Cool Gadgets and such... And what is up with this ? Newtonian Fluid ? I think I want one of these chairs :-) As well as the Sun visor @ mp3/.TV/.DvD listed there. Items like the Rubik's Cube for the blind are cool too. There is even an RC camera car and matching virtual headset combo :-)
Posted by Goodhart 10 years ago | last reply 8 years ago
I have had an idea for creating cool non childish fidget toys as jewelry. My real idea is to create something which could use an ir sensor to pick up someones pulse and then play it back to them through a vibration motor.. (its similar to baby's reacting to there mothers heart beats in the womb an has a massively calming effect on most people,,, to the point where build a bare workshops has the option to include a beating heart) I submitted the idea to Quirky but it wasn't taken on for one of there projects.. I think it still has legs an could be a commercial success. being there's already a bit of interest from educators who has seen research pointing to fiddle toys as being the best thing since the carbon atom arranged itself into cool new shapes. There are a few other alternatives which could be developed.. an i think it would be awesome to develop a whole range of these things an see them in jewelry shops looking like ailion artifacts with documents about how they can help you.. I think everything about it should be play with able , so magnets textures ect ect Here is the initial idea ____________________________________________________ People fidget,, A lot of people fidget. A lot of the time.. They fidget during presentations, on commutes, whilst thinking of ideas and whilst being productive on the internet. And that’s not a bad thing. Fidgeting helps people to be who they are. They wouldn’t do it if there wasn’t a good reason for it. From what I understand different parts of the brain are responsible for different things. And some of them are associated with each other. Interestingly for most people learning is enhanced when there doing something. Much more of the brain becomes active when any movement is involved. Retention of information becomes greater and creativity is increased as the parts of the brain associated with these things become active. I did some independent research on the strength of the book (Fidget to focus) when I did my teacher training, And found that though I didn't have a class full of what some would deem the unteachable I did have a class full of tappers, twiddles and shakers. When I gave them all the option to utilise just a simple shaped piece of wood, and the permit ion to fiddle with it during session they loved it. The feedback I got from the use of the wooden shapes was terrific. With 8 of the 15 students “forgetting” to give the shapes back at the end of the session. And the class being more engaged during the session. The Solution I aim to develop a range of warble fiddle toys primarily as jewellery. Jewellery is now gender neutral, A fiddle toy worn around the neck would allow for an easy accessibility in comparison to being fixed to an item of clothing. Jewellery can allow for a range of shapes to suet different people and allow for a shape or shapes ideal for those wanting to play. So far I have made a shape and seen that people like to play with it. I think the minimum next step would be to make this shape in different materials to give different textures weights and looks. But what I would really love to do would be to introduce all sorts of awesome new functions into the fiddle toy jewellery. I would love to include a number of different haptic responses potentially echoing the users pulse. This has been shown to calm infants simulating a factor present in the womb I know the sound of a heart beat is known to relax most people and has been included into calming music I suspect the same as a tactile would be just as calming helping someone to come from an elevated heart rate to a calmer one in a sympathetic match. Or starting off strong and diminishing from its trigger. Iterations could include a variable trigger like an old school stress relief toy. Magnets with a ruggedized coating to avoid clicking, tracking a whole host of things which could be useful in giving the user the best tools for understanding when they fiddle and why. __________________________ For the Quirky proposal which is pretty much exactly what is above https://www.quirky.com/invent/1603684/action/vote/query/view=trending&categories;=all
Posted by world of woodcraft 3 years ago | last reply 3 years ago