Net-Bed / hammock style / Mattress alternative?

Hi Everyone, I saw this bed on a blog and it keeps coming back to me. Unfortunately I don't know anything about it, who made it, and how. I did some research (didn't find the source) but learned that many people consider sleeping on a hammock very comfortable. So maybe this could be used as a real bed? This is a burning question because I'll might have to buy a new mattress at the and of the month but I feel like DIY :) So, any ideas on how to build such a thing, or on how usable it is? Or maybe you are the guy in the picture? ;) Thanks, elbotho

Topic by botho_cc 7 years ago  |  last reply 5 weeks ago


L293d and extrnal powersupply issue !!

My main problem here that i have a doubt that tinkercad can go somehow wrong ! In this connection that i think is right , the l293d burns beacuse enable pin has higher voltage than powersupply pin or vc2 . But in conncection the 9v battery is with vc2 not the enable and the multimeter shows that , is there any thing can be wrong ?? (Enable is connected to arduino directly to send pwm values )

Topic by mohamedsaad194 5 weeks ago  |  last reply 5 weeks ago


Login

Yesterday when I tried to log in, it said my password was incorrect.  I am sure it was not.  So I had to do the reset login thing where they send a message to your email.  That message had a 21 length temporary password with letters and numbers!  21 characters!!  You would think I was trying to break into Hillary Clinton's email!!! I got logged in, changed my password.  Later in the afternoon, the same exact thing happened, with the new password.  Once again I received an email with a new 21 character temp password!!  After a couple tries I was able to get logged in and once again created another new password.... This morning, same thing!  Only this time I logged in with Google+, so I was able to log in.  But I am on my regular computer, if I try on my tablet, I can't get logged in at all!  Not even with the 21 character temp password.....I am still amazed it takes 21 characters to change a password....I think Instructables.com  can make it easier, if they can't,  maybe they can get instructions from someone on Instructables.com! BTW, I would of brought this to the attention of someone under the "Contact" category but if I clicked on any of the emails given, they would not work.  Yes I could of logged into my email and typed in their email and sent it that way.  But at this point I am tired of going back & forth so much with this website. I really enjoy this website and wish some things were not so complicated. Thank you.

Topic by CandeeS2 3 years ago  |  last reply 5 weeks ago


Collaboration Credit

I’ve recently collaborated on a few projects. Although the function works, it doesn't allow the co-author to get any credit. It seems like a simple solution would be to place the project on both author's pages. I see the question has been asked before without a decent response.https://www.instructables.com/topics/Collaboration...https://www.instructables.com/topics/Collaboration...

Topic by mtairymd 5 weeks ago  |  last reply 5 weeks ago


An open letter to the support and those running this website

For a few years now good people using this website tried to make suggestions, make requests or just attempted to provide helpful feedback and bug reports.Severe bugs are usually dealt with promptly and I like this very much.For everything else though at least I start to develop a feeling that tells me your end either does not listen or does not care.Users are what keeps this section and website alive.Users provide the content that allows you to place ads to make a bit of revenue.Users fill your servers with their ideas.Users are those you should help to have it easy and enjoy being an active part of the community.I won't repeat the things users stated or requested thausands of times already.But I do state that at least got enough excuses and promises over the past few years to think I am being taken for a ride.You state the users are highly valued - valued as what exactly?You suck in user's creations like a vacuum cleaner and promote it all through endless numbers of sponsored contests.You create volume and website hits only.Quality was reduced to forcing restrictions and often totally useless standards on the user.There are articles explaining what a successful Ible needs and how to write one so it fits into the greater picture here.But where is the information how to embed pictures with the text? Oh right, that would be too nice for someone doing it or reading it, so we just plaster a block of images in a meaningless location on top of the text...I was a forum admin for a few years and if there is one thing I learned from it than : Don't mess with the users by "improving" things....Sadly Instructables never got that experience and we saw a lot of "improvements" that really absolutely no one using the website wanted or needed.The storm from that again showed how badly the user is neglected here as even reverting back to something close to what worked before took many months.The request to have some sticky postings informing the user about progress and what features might come soon was rejected again and again.Although I realised the offical suggestion to rework my last Ible so it can be published was a mistake:It highlighted the expectations you have when it comes to how you want users to create their Ibles.Creativity is not just the project in question but also how the creator wants to present it here!!I call it censorship if a person is forced to comply with standards that no one needs nor wants.We get excuses, we get promises but we simply never get anything that actually helps the user to be more creative and have it easy to create posts and Ibles.How long was it until we at least got a half working sorting option in the community section? About a year or so?You want more and better Ibles, a functioning community section again, even more revenue?Well, then give the user what they want or at least what they need to be creative again.Talk to the boss and tell him or her that we need more coders or preferably a new platform for all that actually works and is not just patchwork.Take a look at forums, blogs or other community websites that offer postings and content.See what is possible and what users create, how they create it.Search through the endless numbers of complaints here to find what you missed again, again and again.Instructables won't lose the ongoing supply of new Ibles thanks to contests but as said, volume and quantity is not quality of content ;)A user who is left struggling year after year will give up one day.Users who realise that it is not worth it won't come back after their first and only posting in the community section.And well, someone who created a really outstanding Ible for a contest and does not even make it to the final rounds might never bother again.Why is there no "open system" for contests?Anyone deciding what Ibles make it through should be open about it, post it and allow users to suggest entries he or she might have missed.Even more so for the winner selections.How many votes? What exactly made it a winner? Was it promoted by featuring it or listing it elsewhere?I don't know about you guys but even in a schools science contest the winners will be announced with some meaningful words why they actually won....Sadly, right now, I only see taking, restrictions and ignorance for the user here.The few posts from the support are highly appreciated but only a drop of water onto a red hotplate.Just for imagination:I took tons of pictures detailing my project right from the start.I took a lot of notes while creating it.I am ready to create a great Ible with it all so everyone can build or create it, I want to world to know about it.Then I click on the button to make my Ible and am greeted right away with an image uploader....Dumb enough I upload all my pics in one go.I start writing, I want to include a picture with the text so the user knows exactly why for example that screw needs to be done exactly like the picture shows.But wait...I can't drag the image down from that studip bar.Instead I am forced to create a new step for each picture that has a pecial meaning or purpose.Making a list of parts?Well, lets do it manually and by wasting precious time because there is not usable listing option anywhere to allow the creation with bullets or similar.Oh well, several hours later than expected it is time to take a preview of my creation.The images are clustered up and in no way usable to floow the text, so I start again, add more steps, drag it out even more.In the end I have about 50 steps for something that was fine in MS Word on a few pages.....To finnish I just need to somehow figure out how to get my cover images to fit into this tiny box.Cropping, resizing, again and again only to realise I might have as well used the thumb image IrfanView created in my folder...Then I do the final check.I try to make sense of the unplanned order of things and that no images makes enough sense because I need to click back and forth between steps all the time to undestand it.Then I take another look at my MS Word printout and the Ibles lands in my draft folder.When a suitable contest comes along I might try to check if the editing options have improved enough to post it.Well, I now have more drafts than published Ibles...Now imagine I would not be the only one....

Topic by Downunder35m 5 weeks ago  |  last reply 5 weeks ago


Creating copper nano particles

Be it conductive ink, decorations or just a special pigment for your paint project, Copper is nice.Only problem is grinding this soft metal fine enough to be of any good use.A not so well documented feature of food additives is that they often have "unwanted" side effects.In our case E300, Ascorbic Acid or just Vitamin C.So how to make copper nano particles with it you might wonder?Prepare a well saturated solution of Copper Sulphate, you find the blue crystals in the gardening section together with fertilisers.It is best to use destilled water and not plain tap water, if in doubt go at least with the demineralised stuff for batteries.Adding E300 either dissolved in water or directly as crystals will start a nice reaction.The copper solphate is reduced back to metallic copper.There are a few problems though...For best results you need a saturation copper sulphate solution, low temperatures and a magnetic stirrer.This produced the finest particles for me at around 5°C.But even warm or at room temp the constant sirring is beneficial for even particle sizes.The ascorbic acid is used up in the process as well.You can start with a little and see how much you end up with in terms of a layer of copper particles at the bottom.Adding more E300 will cause a "rain" of fine copper particles - once this no longer happens you know the copper sulphate is used up as well.A dark greenish color of the solution will indicate this as well.Getting the copper out of the glass...Keep in mind the copper is extreme fine!As long as it stays in the solution it won't oxidize or otherwise react.Once out and in contact with just water and air oxidation happens quickly, after all it is pure copper...I found removing the watery solution and then adding destilled water to repeat the process is a good start.The waste from the first round can still be usefull though...In the final round I try to remove as much water as I can and then add methyled spirit to prevent the reactions.You can use oil as well or do a quick vacuum drying and store it in a sealed and oxygen free container.What to do with it?As a condictive paint with the right binder it only needs some rubbing with a smooth tool to create a conductive cover with a low resistance.In a clear paint or resin it provides some stunning color effects.You can even dust the dry powder onto a freshly painted surface to get a copper look.Leave without a top coat and you quickly get an old copper or even green look.If you ever wanted extreme fine metal particles you will come up with more ideas...Like shielding or sintering....

Topic by Downunder35m 5 weeks ago  |  last reply 5 weeks ago


how adjust 25 inch Sony CRT TV(155watt) with normal China TV kit(75 watt)

Assalamu alaikum hi brothers, iam an TV mechanic and I get an very older Sony Trinitron 25 inch TV with dead mainboard I will adjust in it universal China kit but problems have 1- horizontal output transistor too mush heat and short 2- supply transistor is over heat and short 3- I can't get big ore wide size picture on this Sony screen any solution I components changing to get better results I will adjust an Sony flyback in TV china kit but this flyback creat more problem I get black lines on screen I don't understand how I solv these problems I have two month search and gone some other mechanic's but he will not help me this is my wish i manually make an simple TV board for sony 25_ inch screen are any help me here please

Topic by manzarHOSSAIN 5 weeks ago  |  last reply 5 weeks ago


Favorites

Cannot find my favorites. Where to Look?

Topic by sgriffith62 5 weeks ago  |  last reply 5 weeks ago


chainmaile aspect ratio

First of all , I welcome all . I fell in love with chainmail . I love its simple complexity , its beauty . I respect the time it takes to create a piece of jewelry . I made a couple of bracelets and necklaces for my kids and for my wife. I had no idea about the aspect ratio , or how a pattern should be loose or tight. Once the AR is firmly determined and once in range . I'm having fun , but I would like to know what your AR experience with certain patterns. Anybody willing to share some wisdom? DP ( Croatia )

Topic by Damir Podvinski 3 years ago  |  last reply 5 weeks ago


Rebuilding NordicTrack ski machine drive rollers

Many people still buy and use a NordicTrack Ski Machine, although these machines are not as popular as they once were. I have talked to people who say they just plain wore out a ski machine. The part that wears is the one-way clutch inside the drive rollers. NordicTrack makes the one-way clutch sound very mysterious. In reality it is a one-way needle bearing and is available from Amazon or locally from a good bearing shop. The internal diameter of the one-way needle bearing used in my machine (Challenger, similar to a 303) is 5/8 inch. The outer diameter is 7/8 inch. The width of the one-way needle bearing from end to end is 5/8 inch. I originally had hopes of being able to install new one-way needle bearings, myself; but, they together with the bronze sleeve bearings on either side of the one-way needle bearing inside each drive roller are pressed into place. Pressing bearings is not a job for the average home tinkerer but requires a bearing press capable of exerting tons of pressure in a very precise manner. You can often have a local machine shop press the bearings in your machine's drive rollers. Or, you can send them away to Nordic Track Guy and have them rebuilt for about $33 with a one week turnaround. The core of the rollers really does not wear out, but new rollers are available on the Internet from $65 to $95, depending on the vendor. From what I can find, some models used an alternate size. Check to be certain you order the correct rollers, if you choose to replace. One of my drive rollers suddenly began to hiccup. It seemed that the clutch did not always release immediately when I pulled my foot forward. Then I noticed a little mush in the response when I began to bring my foot back on the push stroke. Before you rebuild or replace your rollers, try this: Remove one side of your Ski Machine. See the second photo and check the exploded diagram in your manual. Four nuts and two screws, all plainly visible, need to be removed. Slide the washers and the roller off of the top side. The shaft and flywheel can be wiggled out of the other side without removing anything from that side. Remove the washers and the roller from that side, too. Flush the one-way needle bearing by squirting some penetrating oil, like Liquid Wrench, into the bearing. Work it both ways with your smallest finger. Push a facial tissue into the shaft hole in the roller and sop away the penetrating oil and any metallic dust it lifts. Do this several times. Let the rollers air dry. A little lubrication is good. People who comment on lubrication for one-way needle bearings use Tri-Flo (I am not familiar with it.) or they use a little ATF transmission fluid. You want enough to lubricate, but not so much that the bearings slip. (But, see the comments below where the oil impregnated bronze sleeve bearings are supposed to supply enough lubrication for the needle bearings.) Put the rollers back in place on the shaft. Check to be certain they grab on the rearward stroke and release on the forward stroke. Reassemble the machine. Do not forget the washers between the roller and the side board. My machine works again as it should. The day will likely come when this simple fix does not help, and I will need to rebuild or replace the rollers then. But, for now, my rollers have a new lease on life. What follows is for your information. The first photo is of a portion of the back cover of the manual that came with my machine. It shows a cutaway image of the drive roller. The black printing is mine. Notice the three cylinders inside the drive roller. The outer two are bronze sleeve bearings. The center one looks like a roller bearing, but is a one-way needle bearing. A one-way needle bearing is essentially a roller bearing, but the rollers are able to move forward and backward a little in their cage. There is a wedge shape for the axle of each roller that causes the rollers to bind between the bearing cage and the shaft when the rotation is in one direction, but they are free in the other direction. Here is a description of how they work with graphics. This link is for an Instructable about a number of modifications I made to our NordicTrack ski machine, including how it can be stored vertically in a closet. If you do not have a digital monitor for your skier, or need to replace one, here is an Instructable on how to make your own from a digital bicycle speedometer.  Check NordicParts for any parts you need, also Nordic Fitness Ski Machines. Danny at Nordic Fitness Ski Machines has some very nice new rollers for sale.

Topic by Phil B 7 years ago  |  last reply 6 weeks ago


Preventing Lockpicking?

(Please forgive me if I'm in the wrong category.. Fairly new on the forums) Hi, I'm quite a lockpicker in my life time but word spreads through out my "Friend Network" And most of them attempted on my door. I never do it to anyone without a damn good reason, but they do it for fun and pleasure.. So i always wondered cause i have a Keypad lock with a key hole. How do prevent them from picking my door to my valuable stuff while I can still use my key? Please help me out! (And i know ill get some replies saying to jam the key hole and use the number pad to open the door, what happens when the batteries dye out? I'll be stuck outside my room!)

Topic by Jasekillingspree 10 years ago  |  last reply 6 weeks ago


Front door unlock with face recognition

I have a "Danalock" attached to my front door ( works with Bluetooth ) and compatible with Apples Home kit. As all standard front doors there is a small "spyhole". All works perfectly I use Home kit to lock and unlock the front door. This idea just poped in my mind that, what if i use one of the "raspberry pi " cam or any other small cams put it in the spy hole, then some how program it to connect to Pi so it can use face recognition.lets say I avoid using any app at all as soon lets say I or any user arrives at front door the face recognition allows the user and just for the fun of it plays a greeting "hello & welcome user1". So there is Pi cam + pi and Danalock. I would appriciate if there are any ideas or sloutions or comments etc.

Topic by ruler68jg1 6 weeks ago  |  last reply 6 weeks ago


Fire fighting Robot controlled wirelessly via hc-12 using a Joystick

Hi all!I would like share videos of my project "fire fighting Robot". Here are the links ! Enjoy!!!

Topic by weFwe123 6 weeks ago


Not able to open drafts.

Hi Team,I am unable to open drafts. Clicking on profile pic, its shows drafts, but nothing gets showed up once I click on it.Please help resolving this.Regards,Vineet

Topic by IoT Cloud Guru 2 months ago  |  last reply 6 weeks ago


Straight line art - what is the technical name?

I remember back in 2nd, 3rd, 4th, and I believe even 5th grade, when I was in a gifted program, we had to draw. We drew only straight lines, and when we did it right, it made a curve. We would get a paper with 2 lines, connected at a vertex, at a 90 degree angle. We would draw points every centimeter or so, and connect the points, far to close, far to close. (It's hard to explain.) I'm searching for it on the Internet, but I can't seem to find the right word. Does anyone know it? Thanks, and if it turns out all good, expect an Instructable on it mid- to late October.

Topic by Bran 11 years ago  |  last reply 6 weeks ago


lifes unanswered questions...

Great questions to ponder over (great conversation starters!)Can you cry under water?why does a round pizza come in a square box?What's the difference between a novel and a book?How old are you before it can be said you died of old age?If nobody buys a ticket to a movie do they still show it?if a person owns a piece of land, do they own it to the center of the earth?if you have a cold hot pocket, is it just a pocket?Why doesn't glue stick to the inside of the bottle?Do penguins have knees?Why is it said that an alarm clock is going off when really its coming on?How come people tell you not to stand in front of an emergency exit when if there was an emergency surely you would run through it?Why did Sally sell seashells on the seashore when you can just pick them up anyway?Why are both of Spongebob's parents round like sea sponges while he is square like a kitchen sponge?(isn't this one great?)Does a two-humped camel store more fat than a one-humped camel?If you pamper a cow, do you get spoiled milk?Why is it that if someone yells "duck" they are helping you, but if they yell "chicken" they are insulting you?why do we drive on the parkway and park on the driveway?If the FBI breaks your door down do they have to pay for it?If they have angel food cake on earth, do they have people food cake in heaven?(don't start a war over that, its just a joke!)If you fart and burp at the same time, would it make a vacuum in your tummy?Why do you put two cents in when its only a penny for your thoughts?You know the signs on restaurant doors? No Shirt, No Shoes, No Service? what if someone goes in with No Pants? Would the restaurant still have to serve them?If a doctor suddenly died while doing surgery, would the other doctors work on the doctor or the patient?Why do we sing "Rock a bye baby" to lull our little ones to sleep when the song is about putting your baby in a tree and letting the wind crash the cradle to the ground?Why do we say we're head over heels when we're happy? Isn't that the way we normally are?If the Wicked Witch of the West melts in water... how did she ever bathe?If bald people work as chefs in a restaurant,do they have to wear hairnets?Why do sleeping pills have warning labels that state :'Caution: May Cause Drowsiness?How can Darth Vader breathe and talk at the same time?If there's a wheelchair-bound comedian, is it still called "stand-up"?When the French swear do they say pardon my English?Do people who use sign language see little hands in their head when they think about what somebody said, or do they hear the words in their head?How did Walt Disney figure out how to make people pay to stand in lines all day?Why do people constantly return to the refrigerator with hopes that something new to eat will have materialized?Why is it that no matter what color bubble bath you use the bubbles are always white?Why does someone believe you when you say there are four billion stars, but check when you say the paint is wet?Why do they call someone "late" if they died early?If the serving size on a can of soda is one can, then why is the serving size on the little can one can, too? Wouldn't the little cans be 2 cans?If a king is gay and marries another guy what is that guy to the royal family?Why are red buttons always the most important?How is chess considered a sport?Why is it when your sleeping it`s called drool but when your awake its called spit?If a teacher were to teach a younger grade than they were teaching before, would they be "degraded"?Why does every Abraham Lincoln impersonator sound the same, even though there are no known audio recordings of the man?How's come people tell you to stay a kid for as long as you can. Yet the moment you do anything childish or immature they tell you to grow up.Why does the Easter bunny carry eggs? Rabbits don't lay eggs.If marbles are not made of marble, why are they called marbles?If you dig a hole through the center of the earth, come out on the other side, and then let go, would you be falling down or floating up?Could you be a closet claustrophobic?Could someone be addicted to counseling? If so, how would you treat them?If ketchup is good on french fries, how come it isn't good on mashed potatoes?Where do all the daylight savings hours go?Why doesn't the hair on your arms grow as fast as the hair on your head?What happens if a black cat walks under a ladder and breaks a mirror?Why when people ask you "what three things would you bring with you on a desert island?" no one ever replies, "A BOAT"Why are elderly people often called "old people" but children are never called "new people"?Why doesn't broccoli come in a can?Can you slam a revolving door?What would happen if you found a four-leaf-clover under a ladder?Can a cross-eyed teacher control his pupils?If Winnie the pooh was civilized enough to keep his honey in jars, why did he eat it off his hands? Surely he had spoons?What happens if you get a paper cut from a Get Well card?Can you read a picture book?Why does it say "shake well" on ketchup bottles, but not ketchup packets?Is there ever a day that mattresses are not on sale?Is eating a mermaid considered cannibalism?If mirrors need light to work, what happens if you put night vision goggles on in the dark and look at a mirror?if you're on an American airline, and you land in Canada and stay on the plane, is the drinking age still 21 or does it change to 19?What happens if every team in the NFL goes 8-8?What shape is the sky?If a Jewish person goes to court and is asked to put their right hand on the Bible, do they use a Torah instead? (again, don't start a war over that)Why is it written "May contain traces of peanuts or other kind of nuts" on peanut butter jars. Are people stupid enough not to realize it themselves?If you only have one eye...are you blinking or winking?If you have a gun and you ask, "can I ask you a question?" and they say "fire away" should you shoot them?What is a chickpea if it is neither a chick nor a pea?Why is it called the People's Republic Of China when China's not a republic?Why are dandelions considered weeds when daisies are considered flowers?Why does Sea World have a seafood restaurant?Whenever an adult is kidnapped why isn't it called adultnapped?Why do black lights look purple?Did Yankee Doodle name the feather, hat, town, or his pony Macaroni?Why is it that people duck in the rain, do they really think the rain won't hit them?Why isn't the caps lock capitalized?If someone with a nostril ring takes it out, then blows their nose, do they have to cover that hole as well as their nostril holes so that snot doesn't blow out everywhere?Isn't it weird that if you rearrange the word "teacher" you get "cheater"?How come whenever you start to sing, you automatically sing in a higher voice than you talk?How come people say they ate the last piece of gum, when they really just chew it?You know the saying "throw ya hands in the air like ya don't care"? why bother doing that if you don't care?Why is there no pine or apple in pineapple?Why do water bottles have a "best if used by" date?\If you called the police station to talk to an officer and he was not there, would that be considered a cop out?Why do they put holes in crackers?How come on TV the bell always rings and then the kids go to class, but in real life you need to be in class before the bell rings?Why can the saying "it's all downhill from here." mean both that it will be easy and that it is going to get worse?If all of ACME's products backfire, why does Wile E. Coyote keep buying them?Why do "cool" and "hot" mean the same thing?If you sneeze and fart at the same time, does a vacuum form in your stomach?Why does triangularly cut bread taste better than square bread?Does a baby feel the umbilical cord being cut off?Is it legal to name your kid "Anonymous"?If you have a pet with 2 heads do you have to name both heads?Why can't liquor freeze?If you dig a hole in the south pole are you digging up or down?How come they don't add the time that we are in our mom's to our age?Why do people squint their eyes when they can't see? Wouldn't that just make it less space to see out of?What is a hacky, and why is it in a sack?Who was in the kitchen with Dina?Why do we have to pay a toll on "freeways"?Why do they call them pepperoni if there is no pepper in it?How old does something have to be to become an antique?Can a school teacher give a homeless child homework?Do babies produce more spit than adults?How come French fries are not considered a vegetable, they are just deep fried potatoes?Do cows have calf muscles?Why is shampoo clear but conditioner not?If conjoined twins participate in sports, do they count as one or two players?If a singer sings their own song during a karaoke party, is it considered karaoke?Why do mattresses have designs on them when they're always covered with sheets?If you died with braces on would they take them off?If a person suffered from amnesia and then was cured would they remember that they forgot?Can someone have their head in the clouds and be down-to-earth at the same time?Why is Joey short for Joe, when Joey has more letters?If you were a pastor, and you were getting married, would you hire a pastor, or would you do the wedding yourself?Is there a certain temperature at which it stops being qualified as cold? At what temperature does it qualify as hot?if someone tells you not to be your self, who should you be?Why is most lunchmeat bigger than the bread?Why is it that whenever you sing to the radio, your voice is higher? Even when you have a low voice?How come toy hippos are always blue, or purple, when real hippos are brown?Have ex-mathematicians become dysfunctional?Have ex-locomotive engineers been derailed?Have ex-civil lawyers been distorted?Have ex-bankers become disinterested?Are there seeing eye humans for blind dogs?You know that little indestructible black box that is used on planes, why can't they make the whole plane out of the same substance?After eating, do amphibians have to wait an hour before getting out of the water?Can fat people go skinny-dipping?You know how most packages say "Open here". What is the protocol if the package says, "Open somewhere else"?Would a fly without wings be called a walk?Why isn't there mouse-flavored cat food?Why isn't phonetic spelled the way it sounds?Why isn't "palindrome" spelled the same way backwards?Why is there an expiration date on SOUR cream?Why is the word "abbreviate" so long?do the ABC's and twinkle twinkle little star have the same tune?Why is the alphabet in that order? Is it because of that song?Why is Mickey Mouse bigger than his dog Pluto?why does Goofy live in a house and Pluto in and dog house if there both dogs?Why is it, whether you sit up or sit down, the result is the same?Why is it when two planes almost hit each other it is called a "near miss"?Why is it called 'after dark', when it is really after light?Why is it called a TV "set" when you only get one?why is a pair of underwear one item?Why is it called a "building" when it is already built?Why do we say something is out of whack? What is a whack?Why do women wear evening gowns to go out at night? Shouldn't they be wearing night gowns?Why is the man who invests all your money called a broker?Do Roman paramedics refer to IV's as "4's"?olive oil is made out of olives, and peanut oil is made out of peanuts. What is baby oil made out of?!If drinking and driving is illegal, why do bars have parking lots?If someone leads but no one follows... are they just out for a walk?After they make styrofoam, what do they ship it in?Are part-time band leaders semi-conductors?Before they invented drawing boards, what did they go back to?.............the list goes on and on, maybe i will make a sequel.i can not take credit for all of these, most of them were from this website

Topic by dsman195276 11 years ago  |  last reply 6 weeks ago


UCSC IEEE Technology of Today and Tomorrow Conference

UCSC IEEE, is hosting our 3rd annual Technology of Today and Tomorrow Student Conference, otherwise known as TTT on May 4th, 2019 at Baskin Engineering. The Conference consists of an entire afternoon of speakers and demos for students to interact with. We are bringing tech companies right to the doorsteps of our UC Santa Cruz students. They will discover how engineers are using science to solve real world problems. The Technology of Today and Tomorrow Student Conference is created by students for students. It is an amazing opportunity to see the endless possibilities waiting for them outside the university. I wanted to reach out to the wonderful creators and engineers in this group to ask if anyone wants to be a speaker at our event. If you created a cool project, are working on cutting edge research, or want to present on interesting work, we would love to have you come speak! If you're interested, please fill out the form linked and we will get back to you within a few days and feel free to reach out if you have any questions!Presenter form: https://forms.gle/mah37TLkQgf5UHPg7Thank you, Vaishnavi DornadulaRobotics Engineering Electrical Engineering Minor UCSC IEEE Vice-Chair University of California- Santa Cruz Class of 2021

Topic by va.dornadula 6 weeks ago


Can't delete collections / Can't change order of collections

As the title reads, I am not able to delete my (even empty) collections.I would also like to see an option to change the order they are shown in the dropdownlist while browsing i'bles. I think there MUST be a way to delete unused/empty Collections or even move their order.And as a programmer, I don't think it is that complicated to create a "delete" button (or a "change order" button maybe).Would love to read that this will be made soon..Cheers!

Topic by Dwargh 6 weeks ago  |  last reply 6 weeks ago


Motor Help for Horse Walker

Hi ppl,Somewhat just agreed to help a friend and his family build a 'horse walker'!I know sounds weird but they want to have a go at building one rather than buying one. Basically as none of them know about electronics they asked for my help.....And now i ask for yours......Now i assume that the motor will run from mains, will have to be pretty beefy, if anyone has ideas on this please link me!Next, speed control, i can probably acquire a relay module from my dad (electronic engineer) and program a micro processor to turn the motor on and off for set periods of time to exercise the horses. Whats the best way of getting speed control?Thanksdrummerianhttp://www.show-jumps.co.uk/horse-walker.jpg

Topic by drummer ian 11 years ago  |  last reply 6 weeks ago


Wanted: Experienced software writer for micro controller

Hi there. I am new the forum so direct me to where needed but am looking to leverage someone’s experience in writing Code for a Microcontroller and setting up a prototype from beginning to end. Essentially, this protyoe will need to be able to track the time between audible sounds. There will be additional features. Skill level: between intermediate and advanced In exhancge for services provided an agreement of compensation (payment) will be established. Please reach out or comment for us to be but in contact. Must be willing to provide previous work that you have done.

Topic by cdubs88 7 weeks ago  |  last reply 6 weeks ago


Instructables Image Compression

Does Instructables compress images once uploaded? What is the recommended file size so as to avoid compression of the image?

Topic by ElectroGuruji 7 weeks ago  |  last reply 6 weeks ago


That is it for now. Until next time. CLOSED 3-month membership giveaway

Thank you for playing. :-)

Topic by WUVIE 7 weeks ago  |  last reply 6 weeks ago


Re-using Smart TV board from dead TV to make another TV smarter...

Hi, I have just bought LG 47GA6400 TV but I damaged LCD screen (CRD31092201) when I was assembling it.  I couldn't find low cost LCD to replace and I started wondering how I can reuse any remaining parts of this TV. Actually there are many people like me wondering what to do with dead Smart TV. Few years ago you would receive a standard advice – throw it away. But today Smart TV parts are powerful and with your help might be re-used again... Here is an example: My LG TV has mainboard with dual core CPU,  Google TV inside and cool remote controller with QWERTY keyboard and tons of applications.... I wish I could reuse it with other, not so smart LCD TV I have.  The only problem, how to connect Smart TV mainboard to a HDMI.  It doesn't have HDMI out, it has only input ports and one LCD interface cable.... Is it a crazy idea to convert LCD interface back to HDMI or VGA ? Can you create an instructables to show how to do that ?

Topic by alexgontcharov 5 years ago  |  last reply 6 weeks ago


Dremel Micro Repair/Reuse

Recently at the end of 2016, I acquired a Dremel Micro cordless rotary tool from a garage sale/yard sale for about $20. I used it maybe 3 - 4 times until it didn't want to hold a charge for long. Basically when I put it on the charger, the LEDs scroll top/down indicating it is charging but after a minute or two they stop their normal scrolling sequence and they all stay lit up, which isn't even mentioned of in the manual. The fuel gauge battery indicator shows up red meaning it's near its battery life. At this point, I'm considering either to salvage the motor or buy a new battery for the dremel (which are 2 Sanyo 14650 batteries that are soldered onto a circuit board inside). I'm just wondering is there something that I have failed to do that would make the dremel not hold a charge? Thanks in advance!

Topic by TXVisual 2 years ago  |  last reply 6 weeks ago


DVI to VGA Conversion on a Budget

I didn't make this into an Instructable because my wife is visiting Minnesota and took the digital camera with her. If anyone wants to build this and photograph their process, just include me as a collaborator and I'll be happy... :) I just acquired a new (used) video card for my Mac. Unfortunately, it has a ADC (Apple Display Connector) and a DVI (Digital Video Interface). While the card is capable of driving two displays, I only had a DVI-VGA adapter and ADC-VGA adapters run $50-100US! I decided that I'd just have to figure out how to wire my own adapter and run it to an unused PCI plate. The following schematic is a DVI-VGA adapter. I've included the pins that would be used for the equivalent points on an ADC connector. I just finished wiring an ADC connector to a VGA connector on another plate. It works perfectly! I hope this saves someone else a few bucks... Vegas

Topic by LasVegas 11 years ago  |  last reply 6 weeks ago


How To Unscrew Three-Pronged Screws Without a Three-Pronged Screwdriver?

I have a Gamecube controller I want to take apart, but it has triangle screws. They're like Phillips (four-pronged) but only have 3 prongs instead. I don't have a screwdriver for this, so I need a way to unscrew them.EXAMPLEUPDATE: Not trying to be impolite, but I am NOT looking for a place to buy this kind of screwdriver. I am looking for a way to unscrew them WITHOUT the specific screw driver.

Topic by Aeshir 11 years ago  |  last reply 6 weeks ago


Very old shielding materials and techniques for permanent magnets and resulting possibilities

Forromagnetic meterials are not just called that for no reason.It comes from ferrous - iron.Iron has the highest permeability at normal temperatures.That means a magnet is attracted to it very strongly.We utilise this for transformer cores, the stuff inside a relay and the moving latch of the relay itself.Like current from an electrical system magnetic fields like to take the easiest route possible.Air is a very bad medium, so any iron close by will be prefered even if it is at a slight distance.You can check with a magnet, a steel bar and some iron shavings - please cover the are with plate first ;)Slightly less known is the option to also guide and extend the magnetic field this way.If you check how far the magnetic field of a magnet reaches and note that distance,then you can add some steel bars or rods at the poles - the field will extend through the metal.The most powerful example of this are the shielded magnets used for hooks or speakers.Except for a tiny area the entire magnetic flux goes through the metal.So in this lefover area the magnetic flux density will my many times greater than what the magnet alone would be able to.What most people don't know is that magnets also interact with other magnets in terms of their fields changing and distorting.The Halbach Array is a good example of this.Seen as a single magnet the array would have one weak and one strong side instead of even strenght for both.Wherever magnetic fields change a conductor can produce electricity or current.This in return causes an electromagnetic field that opposes the one from the magnets.Just drop a magnet through a copper or aluminium pipe ;)Since these distortions are widely unknow to the hobby tinkerer mistakes can happen ;)In the early days of exploring science some people already knew about shielding.And they also knew that certain metals have certain properties.Where it is quite hard to create a good coil from steel wire, copper works fine as it is not magnetic.What would then a copper shielding do?If you have two moving magnets with only a tiny gap then the resulting field distortions are quite huge.A copper shield around the magnet like a pipe would then react to these changes and also create a megnetic field that works in relation to the enclosed magnet.In simple terms it means the shield would let the magnet appear weaker or stronger depending on the field change.A quite old document I found gave some hints on how people thought in different directions back then.It was in regards to the design of a magnet motor by the way.Here various magnets were shielded in tube made of a copper-bismuth-alumium alloy.These tubes were then electrically connected so it created a single loop conductor.The claim was that the resulting electromagnetic field of this ring would drive the fields of the enclosed magnets sideways out of alignment.Like bending straight pastic tubes sideways.This "pulsating" would always happen when the magnetic binding forces reach max and so basically drastically weaken this binding effect.Another document talks about a "magnetised brass rod".A holes of the rod diameter is drilled through a block magnet.Not from north to south but through the middle where the flux is greatest.The claim here was that if that rod rotates fast enough a very low voltage with a very high current will be generated.Sounds easy and interesting enough that I might have to test one myself one day.The best one however is what I consider a hoax or being as good as Starlite.Someone back in 1908 claimed to have created a material the reflects magnetic fields.In lame man's terms it would be like an insulator around some electrical wire.The claim and some pics showed it, was that no magnetic field can pass the material.Or to be correct only a tiny fraction of what would be possible through air.A small magnet inside a longer tube of this material would create almost the same attraction to steel at the tubes ends as on the magnet itself.Measurements showed the field strength would be almost equal to a long mangnet of the same field strength.Imagine guiding the field of a big and powerful magnet through a tube around some corners or other magnets and then end in just a tiny hole for the entire flux...Too bad he never shared his secret formula to anyone knows to mankind.Isolation...Imagine you have an array of changing magnetic fields and quite strong magnets.Then you might face the problem that your focus on the "working" end neglected the other end of the magnet (stack).Providing some iron core material will keep thes field lines contained and away from interfering with your setup ;)But it also allows to use te otherwise unused end of your magnets more directly.For example by guiding to another magnet to affect its field strenght ;)Placing a sheet or steel between two magnets in a setup provides a "shared pole" so to say.If you have a north and south pole on a rotor at a distance of 5mm then a sheet of steel between will drastically weaken the strenght and reach of this combined field.It is like pulling the arch between the magnets down to make it more flat.And at and an angle the resulting field will also be slightly angled ;)Capping...When I first encounter this many years ago I couldn't really make sense of it.Quite complex..If you check the magnetic field lines with iron filings or similar then you notice how they go in a rounded manner from pole to pole.This is because the single field lines are of equal polarity and will dirve apart like opposing magnets.By capping the ends of a magnet you provide a short.Instead of diverting out like mad they will follow the cap and create very intersting magnetic field in return.If both poles are capped it is like pressing the magnet flat but without having a field on top of the oles - only aorund the center part.For this the thickness much must match what is required for the flux density.As a rule of thumb: if the end is still very magnetic then it is not enough material tickness ;)Interacting fields in a tube...This one is quite old too and seemed to have found no usable inventions apart from simple magnetic spring replacement systems.But it gave me some clues about Tesla "earthquake machine" ;)If you place a magnet in a tube and at it's ends magnets with opposing fields to the one inside then you can fix this magnet in place.Push one magnet deeper and the distance from the inner magnet to the other end will shrink the same amount.In this old paper two coils were around the pipe with the inner magnet between them.In this gap and at about the same width as the magnets length another coil was placed.Violent shaking would then create electrical energy at much higher level then modern shaker torches.In return an AC current on the outer coils would cause the inner magnet to move back and forth to create electricity in the center coil.According to the paper possible uses include: core less transformer, measuring minute changes in AC voltages, providing free power from a running motor...The last one had me stumbled for a very long time.Until I considered a different configuration.The whole thing is basically a linear DC motor - with correct timing of course.And in some motors we use permanent magnets.I am starting to wonder what would happen if we would design a rotor magnet like this?The running motor would be subject to constant field changes that affect the rotor.And a normal motor is always "even".By using four magnets instead of one we can push the field really flat.This means the area where the coil would operate (about 1/5 of the magnets area) will have a much stronger field.The resulting torque should be higher by about 25% !!Even a simple two coil model setup should show a significant increase in performance here.Timing is critical here but I tried some calculations based on 8 poles and the required "on times" for the coils.In a standard motor configuration with a single rotor magnet the coil is active for about 12° of the rotation.With a 4 magnet configuration this "on time" can be reduced to under 8° of the rotation to get the same amount of torque.An energy reduction of about 4% if you neglect losses and only think in time.If you think in terms like impulse energy then we are talking of about 15% !Shorter on time but still much higher flux density overall than for the long standard timings.Going the long run now:If you check how most DC motors work then you realise soon that for most one rule seems to followed.Only use one coild pair at a time.This is quite contradictive if you consider the geometry and options.A dual commutator would allow to use a second coil pair with a field OPPOSING the magnets instead of being attracted to it.After all: on you bike you pedal with both legs and not just one...And if you do it professionally then yu do the same as I suggested for the motor - you use the up pull of your legs as well.Doing it brushless only requires amodified h-bridge desing to drive the second coil pair at the right timing.Some will now say that it requires twice the energy, I say that for the same motor size your get twice the torque!Just imagine what that means in possible weight reduction for a motor - or its size to deliver the same torque at the same power levels when a normal motor is used ;)The more poles the more complicate the precise timing but no big deal really with modern electronics.Can it be improved even further?I though long and hard about that one until I considered EMF.A DC motor produces a lot of it when the elecromagnetic field collapses in the the coils.We do not utilise this energy...There is a tiny delay until the released energy levels are at max.My theory is that it should be possible to divert this energy into another coil set.If that coil is not the next active but still within a strong enough field area then the EMF would actually add to the drive of the motor.Only downside is that according to my calculations at least 16 poles would be required to get an optimum result.Way above of what I can create in my little garage :(In theory it should then be possible to reach about 98% efficiency for the motor....

Topic by Downunder35m 2 months ago  |  last reply 7 weeks ago


People powered woody garden waste shredder

Would someone please make an instructable for a hand or bike powered 'shredder' or 'chipper'  that doesn't involve welding.  Bahi did a great one, but it requires welding, and we don't have that available. The woody stuff that needs making into much smaller pieces are: orach stems, collard and kale stems, summer squash vines, perpetual spinach roots, tomato stems and Florence fennel stalks (they get to be about eight feet tall each year). 

Topic by mole1 8 years ago  |  last reply 7 weeks ago


Active Noise Cancellation for cars not equipped

I am playing with an idea. Higher end cars come with active noise cancellation systems to make the drive quieter and more enjoyable. However compact and subcompact class cars do not. With the noise canceling technology is available on every shelf for headphones, I am wondering if this could be hacked and repurposed to reduce road noise in a car. The system (Im presuming) would require one microphone, one noise canceling circuit board, and one speaker per wheel well. So it would require two pair of noise canceling headphones to accomplish. The idea is to improve the cabin noise quality in an off the shelf kind of way. Currently there are no aftermarket systems within the normal financial reach of most people. Only a hand full of aftermarket systems out there are available and priced @ 4K USD or more. If this works, it could be marketed at around 100 USD per unit. And provide a much nicer driving experience to the compact and subcompact cars.  By placing the microphones under the carpet and on the wheel wells metal surface the system should ignore the stereo, and correct road noise transmitted from the wheels to reduce cabin noise. Stereo interference is a common problem with cabin mounted microphones on OEM systems. So, your mission if you choose to accept it, is to devise a way to reduce road noise in a compact or subcompact car using off the shelf noise cancellation circuitry available to the average person. If your successful this should be a very easy way to upgrade most cars not equipped with such a system. Having a noise canceling system in a car reduces noise fatigue, and improves the driving experience for all of us.

Topic by ydeardorff 5 years ago  |  last reply 7 weeks ago


Can I use a security cam dvr to record my tv shows?

I found a working(turns on) digital video recorder with a hard drive in it. Can this be used to record tv shows off my smarttv? It's a Samsung SDR-B74303n, it does not have a remote. Any advice appreciated. Thanks.

Topic by LoriR76 7 weeks ago  |  last reply 7 weeks ago


where to get Strike anywhere matches

Their are tons of instructables with strike any where matches, but i dont have any!!! and i cant find a store that sells them! iv tried a hobby store which mostly sells boyscout/ camping stuff they have water proof matches but not strike any were matches iv tried sporting good stores with a second level devoted to camping fishing and hunting but they still dont sell strike any where matches. so-dose any one know where to get strike any where matches in the US

Topic by i make shooting things 11 years ago  |  last reply 7 weeks ago


Cancel Membership

How do I cancel my 'instructables' membership? as well as block emails. I tried to change my email alerts but there was an 'error' on the page???

Topic by 1crazymama 9 years ago  |  last reply 7 weeks ago


Does anyone know if instructables will make it where we can post a picture inline with the text.

I feel like that would make things easier for people to understand. something like;Do this step. It should look like this:*Picture of step*Now do this. It should look like this:*Picture of next step*.Other forums have this. seems like a basic feature that would help encourage people to post more meaningful projects.

Topic by Terabull 8 weeks ago  |  last reply 7 weeks ago


Funny login bug!

Today I had to log out and back in again to do replies, despite all showing I am still logged in.So this "older" bug is still going around here.What was new though was tha after the login I ended on Rick's page instead of mine.As I am nice and also know him I did not do anything I might regred, but I had full access until clicking on the community pages - from there on I was me again.Landing on a wrong profile is one things but being able to check private messages and more until leaving this are could be a potential security problem.I mean, I could have changed the Email and Password and just taken Ricks account over today... ;)

Topic by Downunder35m 8 weeks ago  |  last reply 7 weeks ago


Wanted Arduino code writer (will pay)

Hi friends. I need someone to help me write Arduino code for my project. I will pay 20 US$ for each code you make...will put the money to your paypal account, or if you like can order something for you from EBAY and ship to your address.. please msg me I send you the flowchart and what the code is sopposed to do. Thanks

Topic by goldenshuttle 4 years ago  |  last reply 7 weeks ago


Make a ultrasonic Dog Barking machine??

I need someone to make a ultrasonic dog barking machine. I have a neighbor who allows their dog to back early in the AM and all during the day, so I want a powerful ultrasonic device that when i turn it on it will make their dog howl at 3AM and wake them up, similar to when the fire engine goes by, so that they will get a taste of what they do to me. This has been going on for a year and I can't get them to do anything to train the dog, they just don't care. I am willing to pay for a device that will work. The dog training devices like you see advertised like "Barkoff" have to be in the same room and all I have read is the ultrasonic dog trainers available don't penetrate walls. I don't want to train the dog not to bark, I want to annoy the neighbors and give them what I have been getting. Evil, maybe, justified, YES! email me direct   myxpykalix@hotmail.com        THANKS

Topic by myxpykalix 8 years ago  |  last reply 8 weeks ago


What happened to the HTML Editor?

I used to be able to create tables using the HTML editor, but I can't seem to find it anymore.

Topic by ElectroGuruji 8 weeks ago  |  last reply 8 weeks ago


My condo apartment smells of chemicals like paint.

I am living in a condo (apartment Building, 2nd Floor). For the last 5 days my house smells of chemicals like paint or something very close to the paint . In the living room we have small office area with computer and printer where smells very strong. Also this smell is in the kitchen, in the bedroom, all over the apartment. I am the only one that can smell it. It is not paint. The refrigerator works ok, the stove is electric and the furnace is turned off.  The Consumers checked for gas, but there was non. Who should I call in order to come and detect where  this smell is coming from? 

Topic by Aladana 4 years ago  |  last reply 8 weeks ago


CAR AC TO A SMALL BED CABIN

HI GUYS,can be placed a car ac in a bed cabin which is arranged as the same size of a car or a van? if the answer is yes, is that possible with solar energy?

Topic by mahmoodks 8 weeks ago  |  last reply 8 weeks ago


Email Alert Sent for New Contest Please

I know this has been asked for before, but I'd like to send it in again. I would LOVE to know when a new contest is created, the earliest the best. Being busy I don't always remember to check Instructables, especially if I haven't been doing any project work lately (dang work!).Getting an email for new contests would be awesome.Thanks

Topic by gdufford 8 weeks ago  |  last reply 8 weeks ago


Please help Electronic (problem in power bank)

One of a resistance it's blow up in the power bank and i don't have the number of it !! and I could not find any scheme for this Motherboard of power bank and chip that use in this power bank is mt4606 and name of this Motherboard is yd178_b

Topic by maatoubi 2 months ago  |  last reply 8 weeks ago


anybody using on demand hydrogen to heat hot water?

Hello all - I am interested in either converting an existing gas-fired hot water heater to burn homemade hydrogen gas, or building an on demand heater powered by same. Is anybody doing this? What are the issues, beyond safety of making your own highly flammable gas? lol... I am thinking jet/hole size on the gas burner ring for efficiency considerations, corrosion issues, etc..... THanks in advance... Matt

Topic by concreteblue 3 years ago  |  last reply 8 weeks ago


What brand and method is used to glue inner tubes?

I have several Instructables that I want to make using inner tubes.  I have used a couple of rubber type glues and sanded the inner tube and it still does not bond well.  I will appreciate any suggestions.  I need a good bond.  Thanks. Sunshiine

Topic by sunshiine 7 years ago  |  last reply 8 weeks ago


How to make seed counter with arduino

I want to seed a number that counts the number of seeds. Also, the number of seeds counted, if the number entered by the kaypad was equal, then a relay would be illuminated.

Topic by hoosseina 8 weeks ago  |  last reply 8 weeks ago


please add keywords problem

OS: OSX Browser: Firefox 30.0 URL: https://www.instructables.com/editInstructable/publish/EX7SVNOHX6ARZTM Can't publish instructable - get "Please add keywords" even when keywords are present. Example keywords: "onstar hack privacy camaro gm". I have tried others, nothing seems to work.

Topic by uhclem 4 years ago  |  last reply 8 weeks ago


Is it possible to link Arduino modules with a portable induction stove?

Hi guys! I would like to get an opinion on my first ever project. I would like to link an Arduino module to my portable induction stove. I was hoping that it would be able to do this: ---------- START ---------- 0 min - Start recording sequence Press[Rec] Heating Value: 0 Systems records no change in heating level 1 min - Puts ingredients and increases temperature by 3 levels Press[Increase Temperature]x3 Heating Value: 3 System records an increase in heat by 3 levels upon reaching the 1st min. 7 min - Dish is heated up, let it cool for a bit, decreases temperature by 1 level Press[Decrease Temperature]x1 Heating Value: 2 System records a decrease in heat by 1 level upon reaching the 7th min. 9 min - Dish is cooked. Decrease heating level to 0. Press[Decrease Temperature]x2 Heating Value: 0 System records a decrease in heat by 1 more level upon reaching the 9th min. 9.5 min - Stop recording sequence Press[Stop] Heating Value: 0 System stops recording. Recording is saved and ready for 'reading'. ---------- END ----------- Upon completion of the recording, this set of sequence should be able to upload back to the stove to replicate an identical set of heat change with respect to time. As such, would this project be possible? I would like to modify on the existing parts on my stove that I have. It comes with an interface or some sort that is linked directly to the buttons on the stove. (the buttons available are some commonly used presets and timer settings and an increase and decrease button for the heating level and timer) Any opinions and feedback would be greatly appreciated!! Thank you very much!! - Eddie (Newbie in electrical and programming)

Topic by eddiewoo 6 years ago  |  last reply 8 weeks ago


Mystery object

Can anyone identify this object

Topic by martian101 6 years ago  |  last reply 8 weeks ago


Repulsine - the great mystery...

Even before the repulsine saw some attention during WW2 there were sightings of what we know call the classic UFO shape.Be it in Austria, Poland or other places in Europe, people reported weird disk like thing with a dome flying around.What leaked in images and documents after the war shoed that the repulsine looked basically identical to what people saw as a UFO in the sky over big parts of Europe.Then again, the repulsine appearently never made it a usable stage, same for most jet fighters at the time and still they flew around...If we now just take it for granted that actual test flights really happened back then you might wonder why we did not see any after the war anymore.For most critics it is a simple sign of facts and "confirms" that the replusine might have been a nice idea but never anything that really left the ground.As said, I often like to dig deeper and in this case the digging took far more years than what I planned on.I can not provide any solid proof for the following but I am sure even a sceptic will come to similar conclusions after reading it.Try to find some "eye witness" reports from people who saw the so called "Roswell UFO".Yes the one that made Area51 so secret and famous...Reports can be boiled down to some essential features of the hull, for those who saw it proof that it is alien.Three distinct round shpes on the underside, like you add the bottom of an egg to a round disk.Said disc of the bottom was also shaped like a wing, or the flying disk toys our kids like to play with.On the other side the shape grew up like a half shphere with an added cone or round top on it.On these area they claimed to have see engine outlets or similar and appearently the top cone was spinning in another direction than the rest of the UFO.Now I am no expert for Roswell but if I leave area and time out then I could have been fooled to think these people discribed exactly the same thing people saw a few year eariel flying over Europe.The Roswell UFO was not from another world, just stolen from the looser of a really bad war.What was seen was a working Repulsine, be it an original or something the US created from the 5 prototypes that disappeared after the war.Ha, ha, good one, then why don't we saw them flying after this anymore?Well, for starters it was a testflight gone wrong.Presumable it was planned to be limited to Area51 but the pilot lost control.Considering the Nazies appearently did their best to kill everyone involved in the project before the aliies arrived it is no big surprise.What that test flight would have shown is the impossible manouvers people already witnessed over Europe.90° or more turns at full speed instead of making a turn like a plane, sudden changes in alitude as well as accelleration on a level that makes even modern rockets blush.And if it really was the first bigger testflight they did it explains the big secrecy about the Roswell incident and what followed and created Area51 as we knew it.A "weapon" capable of these things would mean total dominance and options to impove planes and more.So why did they not even do that - or did they?The repulsine was created based on what we call today fringe- or pseudo- sience.If there is only one peroson, or a few that can even understand the claimed working principles that it can't be science as we know it.So, lets take a look what things were already heavily used in the repulsine that "we" claim to have developed or discovered decades later.Coanda effect.When air travels over a surface then it will follow the surface.You can try this with paper strips and blowing on them as well as a stream of water and some shaped objects.Long known but never found any real use until the military picked it up.For example air inlets were then developed to utilise the coanda effect.Remember how a lot of them these days look like a ducted fan housing?The round and slightly conical shape of the inlet will actually act like an airfoil and provide lift - of pulls forward in the direction of the air flow direction of the engine.I supercars we use it to create more downforce and better aerodynamics.Venturi effect.Again a very old one but funny enough also a major factor to make a jet engine work.Tesla turbine.In the Repulsine the rotating copper disks acted like a huge Tesla turbine by using a similar effect.The space between the disks got smaller and smaller towards the outer perimiter.Due to the fast rotation the molecules were accelerated and this created a partial vacuum.We use these principles today for specail vacuum pumps but also in military applications.Harmonics.Without harmonics and resonance the Repulsine would have been impossible.And at a first glance it seems we never made any use from that bit of the machine.Then why do we design exhaust systems in such a way than already the extractors ensure a pump like action and controlled backflow?The sound a good exhaust makes is also based on using the harmonics created by the explosions in the cylinders and expanding gasses.We learned that it is far more efficient to use harmonics and resonance in an exhaust system from somehwere ;)Plasma.The repulsine was said to have emitted a bright glow during certain movements or speeds.To create plasma we need a lot of energy, not so much however if the plasma is a by-product anyways.We learned that a high enough voltage differencial in a vacuum can create a nice plasma arc.From there things like analog TV monitors were created.But we never made anything that creates plasma for any use in an atmosphere.Well, unless you start to check supersonic rocket engines and other things.The working principle is very, very close here in some applications like the ramjet.Vortex energy.Today we see all vortex energy stuff as a free energy scam or at best a waste of time.But from the inlet to the outlet the entire Repulsine utilised what we now know as vortex energy, vortex math and so on.The air is twisted and spun around so many times that it is hard to keep track - but it always happened in a harmonic and resonant fashion.In some way this is implepemented in very expensive cars to keep the ventilation system almost silent even at full power.If you ever take an expensive car apart you might wonder why the air system is not as smooth and straight as you would have expected to get this silence ;)There is more but the list would become too long ;)So, if the repulsine was really that great then why was it taken apart to only utilise fractions of it in other things?If you have something really great that combines a lot of things then no one would suspect if you "developed or discovered" some of it in other projects.And to give you a very bad comparison for the other way around:If you know how to combine a petrol engine with some long blades then you could fly!I know, we did that already but you get the point.I can give you a motor and blades but that would not mean you could build a plane or even helicopter!At that time and still today something like a Repulsine would upset the "balance of power".If claims are correct then the engines of the repulsine were only required to provide the enrgy for directional changes or speed but it flew on "free energy" as the main engine system.In lame words like a jumbo jet that only needs a small engine for the hydraulics and electricity...Another big problem is the replication even if you would have a complete and working model to disect.You see most parts were brazed or welded as screw or rivets would have been problematic in certain areas.Other parts like the Kudo horn like intake systems would even today pose a challenge if you want to replicate them 100% correct.And if your understanding of science and physics greatly differs from those who originally created the thing...If your understanding tells you a dice has 6 sides (we all know that) but in my understanding it would have 16 then you would never understand how my dice rolls ;)Bringing true free energy of any form into this world is only allowed if someone can still make good money from it.Just check solar cells and wind generators - we all can have them but our providers make sure they have enough of them as well ;)Will we ever see a fully working Repulsine again?Of course !Some people like old cars, some collect old planes or old machines and tools.A great project for people in the right trades is always to build thier own little steam engine.So to say as a reminder of how it all started.Same will happen with the Repulsine as the first really utilised free energy machine the world had.The war and killings were not what really scared the world.This happened and will happen over and over again to various extends.Really scary was once certain people realised what might happen if over there the war would end with a victory and people would have time to develop for peaceful things instead.Without the war or this idiot Hitler a peaceful war would have taken over the world by storm.Those making sure we know nothing else but paying for our fuel and energy would have lost their monoply.Times change though...We destroyed our world with our needs for fossil fuels and electricity.What is left we destroy by chopping it down, digging it out or just by building new estates on prime farm land.People are now more desperate then ever to find ways to reduce their energy bills or enviromental impact.Otherwise Google wouldn't make billions on all the fake free energy videos out there.But what would it take to recreate the Repulsine?The person able to come up with the understanding of at least attempting to build one again would need to have certain qualifications and titles.He or she would hold a Nodel price for completing some of our known laws of physics or for finding some of the still missing ones.It would be a quite hard to understand and like person too, maybe even highly autistic.The person would also have an addiction like need to complete things, add the missing bits.And of course a totallydifferent understanding on how nature and the universe work.David T. from England is such a person, or at least the closest mankind can offer so far.He can see math in his head as shapes and images.Complex math problems appear to him like developing landscapes in high detail.He even learned to speak icelandic fluently within 7 days!!Imagine such a person would develop an interest in the old pioneers like Schuberger, Newman, Tesla and so on?Where we normal people fail to see any relevance or connection a guy like David would be able to literally see how all these inventions and ideas connect.He would be able to SEE the math behind it!Knowing how something was supposed to work and combining what is known through patents, drawing, videos or reports would enable such a person to make conclusions.For example where we might just see a nice pattern when we throw a stone into an undsturbed lake such a person would also already know and see the corresponding math the created the waves and why they were created exactly like this.Assuming David has no real interest in such things, then is it possible others already try?Sadly yes and even worse they do it with kids.Learning methods that are different can bring great results.For example while we use a calculator for big numbers some kids attend really strict and performance based classes to do this with an ancient abacus!After years of hard and often painful training they are able to it with a small abacus that only has a single row of discs.Shortly after they graduate to a virtual abacus - they only twitch their fingers in the same motions they would use on the real thing, but the disks and rods are all just visualised in their heads.That however is all meant as an improvement and the kids do it because they want to and not because they are forced to.Like learning to be a chess champion before even being old enough to work...In china however we have a very selective education program.Kids are not just trained slightly different to our kids but also closely monitored on their progress.As soon as one stands out for some skill it is subject to examination.Being well above average here means it is an opportunity for the kid and the parents - on paper at least.We in the western world would see it as a viscious circle though.Over the years china developed not only a better understanding of how these special kids brains actuall do their things but also how to create tests for this purpose.What looks like impossible or nonsense to most kids will trigger a scecific response and understand in those that are special.We would create something that allows parents to know early on where the kid has really good skills and what activities should be promoted.In china though the parents receive a nicer flat or some additional income while kids are send to a far away school.Again we would refer to such a school more as a boot camp.Discipline is at least on military levels, same is the punishment system.In most cases families are not reunited for many years, phone or even video calls only happen in the rare times when western TV crews are allowed a sneak peak.I just say: If a kid would see the parents often enough then it would not only know what to talk about but also be happy to talk to them - this however you won't see.It is like they talk to some distant uncle or such.What is really scary though is how these kids are trained to see their purpose and how important it is to be the best in what they do.Imagine you lost your kid at an early age and the only thing you got over the year was letters from the government saying how well it is doing and that you can be proud of it.Then it graduates and you are not even allowed to be there on that day...After that the kid is gone for good, you get a new flat and your proud kid supports you with some nice extra income.You don't get to know where it is working, what it is doing or if it might just be attending some university.By any standards these graduated kids can be seen as a great number of genius young people.Math, music, languages, science, you name it and they will have the experts aged below 20 for it.But what do they do once school is finnished and life starts?So far no reporter or family was able to figure it out.Means they don't appear in some high profile company, they don't start a successful business or teach at any public or private school.I leave it up to your imagination where thausands of kids find secret employment once they graduated....If, at least in theory we could be able to understand all these old technologies then why don't we at least try?Everyone has a goal, some desire a happy family and nice house, other need fame or just money to be happy.With that comes greed.You might have a really nice car but that does not mean you would give to some neighbour for a trip.Even if it just a nice rose garden, you might not want to share the views with anyone.This is true on all levels and we created a term for it "Need to know basis".If you just operate a press in a factory then you don't need to know when or what the next job is that comes for your press.You will know when it arrives and can check the documents attached.You don't need to know that your council is expanding and it is only seen as a courtesy to let you know on some notice board or in the local newspaper.And even our government does the same.What we do from the first days of our new baby we do on all other levels in the same way.What the baby does not need to know we won't tell or show.But we provide all the littly anklebiter needs to develop and be happy.Changing nappies, feeding, proving comfort when sick or having a nightmare.Later we teach language and other skills like walking.It goes on as you know...Humanity as a whole is like a little kid as well.If we would know all the little, dirty secrets then we would riot and go mad.Things that are of no concern are nothing we need to worry about, so we don't get to know them either.Knowing how build the latest fighter jets is seen as a thing that would give a possible enemy an advantage.Makes a lot of sense to everyone as these things might have to protect us one day.The questions that remain are:If humainty is a child, then how old are we now or when do we graduate?If there is a collection of secret and old knowledge then who owns and controls it?What would it take to force the release of all the things people actually created for a better world and not to be locked away?As funny as it might sound but one answer to all these questions would be to do nice orund trip in your Repulsine.Fly over ever single country in this world.Let their guided missle and what not chase you and once enough show then how quickly you can make a 180° turn to get behind them.So called unimportant countries might ignore you and the people only enjoy a nice show.Those powerful enough will fear you and think it was "the other side" showing their superiority.Once done with your round they all will have to realise there is a new power that is at the helm now: Knowledge and understanding.No more secrets, a repulsine for everyone who wants the plans to build one.A new world would start.Ever thought about that when wondering why all these "Aliens" we see in their ships in our skies never land to say hello ? ;)Even if they would be Aliens and not just some human pilot in some experimental craft:Shouldn't this demonstration of absolute power and control without any violence tell us something?The Repulsine need to come back to life to end all this UFO nonsense and Alien theories out there.You hear the sounds, see the ligh show and impossible abilities.And suddenly most if not all UFO sightings would have a common factor again.Just because the Repulsine is claimed to be lost and that it never actually worked despite film evidence showing the opposite does not mean there is no one using the technology.A working Repulsine available to everyone would also kill the doubt on so many other old inventors and "fringe" scientists.Science and physics would need to be redifined as would be able to find a lot of missing links.I know there is not only a lot of people out there trying to get what they can about the Repulsine but also that there are others who try to prevent this.You have a really easy time getting permission examine some old and histrically important artefact from a museum than getting just a hands on approch for what remains of the Repulsine in various places.Not even decent 3D scans will be allowed.Anything like just getting a tiny pipe cam inside is rejected with the excuse it could cause damage.If the thing is a hoax and never worked then why would it be so important to never touch or move it? ;)I recently got word that two of the remaining Repulsine "artefacts" were examined by the same group of "scientists".This happened in the late 80's and said scientists were claimed to have had acces to a collection of spare parts for the original Repulsine that was lost after the war.A private collector was also mentioned who denied all access but what he had in a secure storage facility appearently disappeared shortly after his refusal.Putting all the dots and hints together it would mean that someone in the late 80's was able to get literally everything that is left of the project in his hands.Those who claimed to have seen these scientists working on the Repulsine leftovers claim they used top notch technology to do so, including 3D scanners - and those were basically imossible to get back then for any uni out there...The laptops used were said to use touchscreens and were connected to all sorts of equippment.And they did it in almost total silence, like a group who studied a performance many times and knew exactly what do when and where without the need of many words.Professional in examining something unknown all all possible levels.I was unable to get any information on these scientist or who they worked for.But if you are one of them and readin this then I would love to hear from you!

Topic by Downunder35m 2 months ago  |  last reply 8 weeks ago


What happend to the favorites button.

OK Who's the idiot that's trying to justify there job with the site down grade and yes it is a down grade in my opinion. This site Instuctables is my go to place for how toes , wish I'd thought of that and to share ideas learn new skills. I spent a week trying to work out what was wrong with my computer. I thought there was a setting problem or graphics card problem only to find out that it,s not my end but your end with a format update.Where to start, how bout the endless white back ground. It burns my eyes after a few minutes. the pics are way to big. What happened to the favorites button ? I have over 1100 favorites saved . I save the posts I like for reference to make review build or cook latter. But this option seems to be gone. What I would like to see is some way to save my favorites in there categories like food workshop home outdoors this would help looking for posts easier to find instead of the random order they were saved in.Is there any way to go back to the old format and let your fans choose, like ( stay on old old format or up date to new format ) but with the option to go back to the old if you don,t like it. I know the sits may have some issues that i'm not a where off and you work hard behind the seens to keep everything running smooth. I think you went to far to quick. You may loose fan over this I mite be one of them. This all may sound very harsh and it's meant to I'm try to get my point across that i don't like the new format. I only say all this out of LOVE for this site. Please don't let it fall on deaf ears. thanks JIMWI

Topic by jimwi 1 year ago  |  last reply 2 months ago


Linear magnetmotor - the basics for a beginner

Designing what is said to be impossible can be tricky, so I will try to give you some tips to reach your goal a bit quicker.A lot of people these days try to start with a wheel.Makes sense in one way as the final goal obviously is something that would rotate.However, considering angles in a rotating system is far easier with a usable baseline!We developed the liear motor well after any rotating electric motor.But only because someone already invented it for us.Making it flat was then more or less about finding a need for it first, like the modern highspeed trains on a maglev principle.If you want to make something move then it makes no big difference if you do it in flat or round.Flat however leaves you more options and much easier adjustments.And you will need a lot of the later...IMHO the best size and option for linear is the N0 model railway system.Tracks are only 3CM wide and second hand carriages to salvage the wheels is cheap.Either way, how would you start?We have multiple choices, like single row of magnets or double, maybe even tripple.Same for the actual magnet orientation.Flat, angled, attracting or repulsing...They all work if you understand how they actually work.Not the principle, the magnets ;)You see, a magnet always has two poles and without trickery both poles will be of even strenght, size, angle to each other and so on.Playing on a small and flat track with little resistance allows to use tiny magnets, like 5mm disc ones.If you follow the common concept of two magnet rows either side at a slight angle then you are half way there.People spent a lot of time trying not only to let the cart being attracted by the first magnets but also to let them pass out at the other end.In case you wonder why:Being able to be "sucked" in means you will have some force pulling on your cart from the next stage.Being able to fully pass through and preferably gain speed, means the cart would go from one set of magnets to the next - motion is accomplished.Let me give you my personal favourites for 5mm disc magnets:1. The rows are at an angle of 4-5° like a slim V-shape.2. Same as above by with the orientation changed by 90°The first basically means you have the magnets facing up while in the second you would have them mounted vertically.Both have good and bad sides and I think it is easiest to start with the first option.Here you would have a row of magnets at a slight angle either side of the track.Lets say it is all pointing away from you, then the north row would be left, south row on the right of the track.If you start narrow or wide depends if you want attraction or repulsion forces to work with.Again, it makes no big difference really, just a different way of operation, most seem to prefer repulsion though thinking the forces are greater - this is not true though ;)A very often copied way of mounting the working magnet (s) on the cart is by placing a magnet with south facing down on the left and one with north facing down on the right of the cart.Here you have the big problem of manipulating fields.The forces are quite strong and it seems the obvious choice but should be left for the advanced classes.Let me try to explain:No matter the site of your work magnet it has a very narrow acting field.Means you have a lot of attraction forces going only downwards and not providing any energy to move your system ;)If you orientate a magnet (stack) so north faces to the right and south to the left on either side of the cart you have more options.If the stack or single magnet has the correct length to match the angle of the magnet rows then a funny thing happens.Assume the outer most magnet is at about the same distance from center as the first magnet in the row.Means the inner most and opposing one is further away and the attraction forces gain the upper hand.While moving along though it moves away from the magnet row and whie still gaining force the last magnet in the row stops the cart dead center.This is the common scenario you see on the web when people try and fail.Now if you change the length of your working magnet and position in relation to the magnets in the row you can use the changes to your advantage.You can add slim disc magnets either side of your stack and observe the change in behaviour and where the cart starts to be repelled or gets stuck.In a bad case it starts fast but then stops with a big wobble back and forth.The perfect balance and size means the cart is attracted once it comes close to the magnet rows.There should only be a tiny sopt of very little repulsion right before the cart takes off.Like a hair trigger on a good gun if you know what I mean.It should then see some accelleration till about magnet 5-7 in a row of 14.From there it should level out and roll trough and keep rolling.I assume your first attempts now get you to the point where you cart start really nice, slows down a bit and seems just to miss a tiny extra push to make it out.It it shoots to the last magnet in the rows and then settles back to one or two before the end you are close!We have now two basic ways of manipulating the magnetic fields in our favour, or to "cheat" phsyics.Closing the gap.You will have realised by now that you need at least two stages for your system to be tested properly.Preferably 3 to get a 120° angle in a rotary conversion, but 5 would make sure there is hickups.This also means distance is now something to play with.Remember the pull before get at the same level with the first magnet in the rows?This is the first force we utilise by bringing the second stage at a distance CLOSE to take over the pull.Close because we don't want it to pull the cart out just like that.It would create a big "bump" and in a rotary system massive and unwanted vibrations.Instead we weaken the last magnet in either row.We still want to keep its pull but not so much the holding force that makes our cart go stuck here.Placing a magnet orientated in the same direction as your rows at the end of the row will change how and where the field of the last magnet in the row goes ;)Just to be precise: If the magnet in the row is north up and south down then the added magnet should have the poles 90° to that and in the same direction as the row.Depending how high, how close and with wich pole you place it the fields will change.You want to lower the locking force by at least 50% here - that will be suffient to overcome the holding force and gives the next stage a good chance to take over.It can also help to provide a sacrificial pole below the last magnet in the row.Again if north would be facing up then the lower magnet would also face north up but with a small distance to the upper manget.Ok, what happens here exactly?If I would want to be precise here you would need to read an awful lot, so make it simple...The lower magnet provides a way for the upper magnets south pole to get somewhere else instead of back to its original north pole.It also means there is another north pole "pushing" the north of the upper magnet more flat at the bottom half.This weakens the field strenght.Distance is key.The added magnet at the end does a similar thing.It provides attraction or repulsion forces that affect the field shape of the last magnet in the row.Imagine you have north facing towards the last magnet:You would push the last bit of the field up while also providing a very sharp end instead of a big round shape.The south pole of the last magnet also gets attracted by this added magnet, even more with one magnet below it.With those two added magnets you should be able to fully overcome the binding effect stopping your cart.It won't start and keep going when you let go of it half way down the track though, you need to start with the first magnet or give it a push to overcome the first binding effect.After that momentum takes over.If it really is that simple then where are all the successful videos about it?They are out there, you just need to look quite long for them.Most people still literally think only linear.A magnet has north and south and we can't change it - but we can...With field manipulations as above and shielding we get so much more than what physics currently dictates.Keep in mind that adding shielding under your rows of magnets will also affect how all works together ;)Some people forget this when using ferromagnetic things way too close to their testing area.Distance is also vital to keep in mind when experimenting.The closer two magnets are greater their forces to each other.You can utilise this for example by lowering magnets that seem to be far too strong in your configuration and cause a binding effect ;)And as said, shielding is nice thing for triack too - imagine what would happen with sielding on the sides of your magnet rows... ;)Make a negative into a positive!Extremly strong binding forces at a certain point in your track design can mean you might be able to utilise it instead of trying to waste it.Added magnets can divert the field to quite some extend.Shielding however can also direct them somewhere else - like in the core of a transformer where it all goes in a great circle.Even strips of shielding connecting magnets from one row to the one on the other side of the track can be utilised.Like that you turn two small magnets into one long one with twisted poles at the end.Provides more field strenght too and makes it good for areas with little to no attracting force to the cart.Then there is bigger design...Some people add a center magnet.With one on the cart and one in the center of the track you can create a cancellation field.The rows bind while the center magnet wants to push.If place where there is still enough forward momentum or even acceleration but close enough to the binding magnets it is possible to greatly lower the binding effect.But keep in mind you need to consider the added repulsion or compensated the field so it is most active towards the moving direction and less strong to where the cart is coming from.Advanced manipulations.You can machine magnets, sandpaper, file, grinder, CNC....Imagine you cut a square dice magnet from one corner to the other.Depending on how you have the field orientation you can end up several variations.But if north faced up in your dice then it will still face up in the cut pieces!Cut a pyramid and you end with a big flat south pole and a pointy north pole - and with extreme field strenth in this pointy bit.Similar story with half moon shapes.Imagine you machine a flat block magnet so you have a half moon with its pointy bits facing down and big round bit up.If north was up in the block and you shape the moon correctly then you end with two strong south pole points and a north pole that is strongest right between those points.Why is this so interesting you might wonder?Imagine you already know a magnets pole does not care if gos back to its own opposite or that of a different magnet.Then you also know you can machine and shape magnets to your will.Now imagine that for a change:Precisely machined pyramids that have the top chopped off.All tops in this example facing being the north poles and big bottom south.If you then machine a precise iron core block you make a nice cube.With magnets we need really good glue and a good press to make it happen.But if the center core is of proper size then we end with a block magnet that has a south pole on all sides.Of course to be 100% perfect we would need a zero tolerance gap but good glue and high forces can come quite close.Works as a sphere too but would even have clue where to start to machine the magnets LOL

Topic by Downunder35m 2 months ago