Embracing Failure

Some of the best advice I've received was to "fail faster." You want to get the mistakes out of the way, learn from them, and move on as quickly as possible. Don't live in fear of failure as you'll be stuck before you leave the starting gate.It's been good advice and in the spirit of embracing failure, here's a Fail blog that collects Fail images from all 'round the Internets. Enjoy. The FAIL Blogvia BoingBoing

Topic by fungus amungus   |  last reply


Login failure

I use FireFox (8.1.0). When I enter the instructables site, the login links are in the upper right corner. When I click the login (not Facebook, the regular one) the entire set of login links disappear, but the login dialog does not appear. To get the login to appear, I click the favorites icon to get it to show me the logon dialog. Is it Firefox, or you? BlueGull

Topic by BlueGull   |  last reply


Internet failure detector?

Hi everyone - this is my first post and I hope I am posting in the right place! I want to be able to detect when my PC loses internet connection and be able to signal an actuator to drive a motor. Does anyone know of any software that can do this on the PC itself or a standalone project that can be used to do this? thanks for reading!

Topic by srowland2   |  last reply


pro membership failure

I signed up for a pro membership yesterday, and received confirmation email yesterday. I was able to download pdfs yesterday, and generally use pro features. However, it is failing to work today.  In particular, access to pdfs of instructables is not working. Also the patch send link given in the pro membership confirmation email https://www.instructables.com/patch/send   takes me to a page where I am told "Sorry, you don't have any patches left to send! We'll make it easy for you to purchase extra patches in the future. For now, you'll have to wait until your Pro membership subscription renews." This is despite my never having used any patches. Please assist. thanks, Matt

Topic by doctormatt   |  last reply


Periodic Table of FAILURES

Hello everyone!! It has been a while since I have posted anything but I am back. So, I am currently a freshmen in high school, taking block science. I just started chemistry and was very excited having prior knowledge and love for it. The teacher give  us a paper with the Periodic Table of Elements on it. It was made by the Navy with a bunch of pictures of ships and what-not. So it seems legit. BUT, after closer inspection I discover this is as accurate as a un-modded Nerf gun. Many errors, ranging from spelling of elements to incorrect symbols and more.          So I issue a challenge. Since I have only knowledge of Chemistry I hope that here on Instructable's there are people who know it from the back of their head and can and will find the errors in this catastrophic table. I am posting a picture of it for you to investigate, if you need it to be clearer or anything else just ask. I am very curious to see what else on this is wrong. I have already marked and fixed a few errors with a pen, but I want to see if there are more!

Topic by ostomesto   |  last reply


Show Me Your Epic Fail Projects!

Any good maker will tell you to accept and embrace the process of iteration. And a natural product of that iterative process is failure. You learn a lot by trying something, being less-than-successful, and then attempting it again. It's the act of picking yourself up and trying again that helps dissolve the fear associated with failure. I'm interested to see your most epic failures! Share photos, videos, and stories of your fails from project builds: Slumping, cracking, burned, melted, misshapen… it's all part of the learning process. Can't wait to see how you messed up. :)

Topic by xxlauraxx   |  last reply


Embarrassing Moments in Engineering

Mental Floss compiles four great examples of not-so-great engineering feats and one dramatic fix. The Tacoma Narrows Bridge makes an appearance, of course, as well as three other detailed examples to learn from. Mental Floss articlevia Neatorama

Topic by fungus amungus   |  last reply


Electrical excitement (not)

I was going to fry some potatoes, but my electrical ring failed with arcing, smoke, noise & sparks... I'm not happy. I've got the ring to replace, a pan, and I've got sooty-oil to clean up. And no fried-food. And the place stinks of burned-oil. And I've lost / spoiled half a bottle of fresh oil. Oh, and I'll have to pay for the electricity that did this too. And I need some 30A fuse wire.

Topic by lemonie   |  last reply


Is my HDD verging on failure?

I decided to check my HDD's S.M.A.R.T status, and I was a bit alarmed to see my reallocated sector count at 32 and my pending reallocation count at 24. This hard drive has been running for about 2 years and a half, and I haven't had any noticeable trouble with it. But, what should I do (besides backing my stuff up)?

Topic by Dashing Rainbow Dash   |  last reply


Failure to see posted comment?

I signed in and posted a comment to an Instructable but nothing happens when I click on the Post button.  Am I missing something to do?

Question by CurtR   |  last reply


Gifted pro subscription failure

Hi, I gifted a pro subscription to someone yesterday, it appeared to complete, but the resulting codes didn't work for the recipient....and I was flagged as the latest pro member, despite having my own subscription...... Any suggestions as to what to do next ?  Steve

Topic by steveastrouk 


Going Pro Membership Failure

I have gone PRO...but can't get any PDF Downloads...They keep asking to sigh up for PRO membership...What can I say...again asked again and again...I already have PRO membership...What is going on!!!...Please Let Me Know...Jeff Smith

Question by railsf   |  last reply


How to test computer screen power adaptor for failure? Answered

I haven't used my Wacom Cintiq 24HD screen in a few weeks and it's not working properly. After disconnecting the power supply from the wall socket for a few minutes and re-connecting at most I get some flickers of the screen, followed  quickly by turning off entirely. If the adaptor keeps power connected then the screen won't do anything, and so I figured it should be the power adaptor that could be failing. I'm really not knowledgeable with electricity so I thought I could ask for some help here: - The power supply adapter has a light that is faintly lit while connected; - It reads *Output: 24V =-=-= 5A* on the back - The end terminal is similar to a Mini DIN Connector type connector, round with 4 pins that are arranged in a perfect square, but not as standart I think. How can I check if the power supply is working properly with a multimeter like the one in  the picture?   I did try setting it almost like the photo, one step to the right (20 V, black on COM and red on VΩmA), and when I touch the pins inside the connector I get a spark out of it. Pressing the black tip as well against the outside ring always result in a spark from the red tip and values reading erratic on the multimeter's screen. Can this be used to make any sense of this? I've looked for power supply replacements and they're looking to be very expensive to get directly from Wacom. One final question: if it is failing, could I try to get some alternative solution working here? I don't know, using an universal adaptor and request soldering a more common connector to this Wacom proprietary one's tip? Thank you in advance

Question by acn   |  last reply


Hard Drive Failure Advice? Answered

Our family PC was on and running today, but when I left for a minute and came back; it was at a pure black screen that simply said "Hard Drive Failure" (similar to below, substituting my message in quotes). When I tried to reboot, it got stuck at the "Dell" startup screen, and wouldn't boot into the HDD from BIOS; although it did recognize it. Powered it off, left it for an hour; and it booted up. However, it did hit a "Windows Error Recovery" screen, and has been for a while now upon a boot up here and there. The computer is three years old. Should I ignore it, or replace it (the HDD) asap? My guts say better safe than sorry, but extra input couldn't hurt anyway.

Question by The Dark Lord   |  last reply


Time Machine read failure?

Hey all- back again. my time machine is giving me grief again for an unknown reason. I got my drive (seagate replica 2tb) about a month ago, and it has worked great until now. I split the drive (not a partition) into 2 parts, one for my itunes library, and one for my backups (this was about 1.5 weeks ago). Last time I checked it (3 days ago) it worked fine. I accidentally left my computer on while we were gone for a few days- and now that I have come back my backups fail. It says that my drive is read only now. I have checked and it says my last backup was they 25th at 12:08 AM, so its been about 24 hours since the last backup. I try to repair the drive in disk utility but it fails and tells me to restore the drive. I can access all my itunes data on the volume on the same drive, but my backups wont work. Anyone know how to fix this?

Question by astroboy907   |  last reply


Unable to publish

I've been trying to publish a project since yesterday afternoon. Every time I get the error message : Servers are busy. Please wait a few minutes and try again. See screenshot. When I click publish the message "Generating image" appears in top right corner. (screenshot). After a minute or so of "generating image" I get the error message. The project edits and previews fine... but won't publish. I am new to instructables, but my last project went through without a hitch. Am I doing something wrong? Thanks for your help.

Topic by sergey levchin   |  last reply


All of my internet browsers are not working! this includes firefox internet explorer and chrome how can i make them run? Answered

I have checked my wireless connection to make sure it is functioning properly. when i try to surf the internet all of my browsers say either: 'firefox cannot establish an internet connection' or 'unknown error' and the internet explorer one (i cant remember that). I had a thought that i should reboot my laptop so that it is all clean, one reason for this is that my laptop is slow, it contains viruses and such. my laptop is running on vista.

Question by knektek   |  last reply


Lego Mindstorms NXT motor port failure? Answered

I just dug out my Lego Mindstorms NXT 2.0 (it was buried under some stuff) and I decided to play with it. I had built it into a "Robogator" model, and I went to test the jaws, and.... nothing. The motors didn't turn at all. They just locked in place. I replaced the batteries, tried test programs, updated the firmware, and even opened up the NXT, but I couldn't find anything wrong. Also, the motors worked when i connected two together and turned one. I called Lego support, but their answer was to just buy a new one. Anyone have any idea how to fix this?

Question by pikmin205   |  last reply


I need to quickly correct this failure.

One of my important projects suddenly stopped opening in the Project. I stopped accessing it, and it all complicated me a lot. I can’t imagine how this could happen.

Topic by JodieSaunders   |  last reply


SMPS failure, the Gates of the MOSFETs exploded?????? Answered

I've just build an SMPS using a TL494 chip using the power circuit from this circuit from uzzors2k, it's just a standard half bridge in my case using IRFP460's. The MOSFETs are driven through a small transformer that itself is driven with a H-bridge.  Yesterday I was trying it's first mains power test slowly ramping up the voltage with a variac when at about 180VAC i could hear some fizzling from the circuit and at 200V the GATE's of the MOSFET's exploded violently, at close inspection there was no shorts or flashovers and the gates were the only thing that was damaged at all. One thing i noticed later was the output waveform of the power transformer, unlike the signal waveform it didnt exhibit the same 96% duty cycle but a 100% with a lot of ringing on the rising peaks of the square wave, i know this can probably be fixed by reducing the duty cycle but i cant see how it could've blew up the gates. I've included some pictures so you can see what i mean by explode, as you can see on the left Fet the gate pin has completely blown off and the copper has melted slightly and the right image the same happened but i cracked the Fet open with a hammer to see if there were any clues inside. I really dont have a clue why this happened and would appreciate some help, thanks in advance.

Question by The MadScientist   |  last reply


Infared sauna electrical failure - help? Answered

Hello I purchased this sauna used a couple days ago, and its not turning on.. The previous owner sold it as having only an issue with the fuse, but I have exchanged all fuses, and Im assuming its one of the three components that are running in the rectangular unit mounted on top of the sauna. I will post all the photos so you are able to see detailed views of everything - I have now ordered a replacement for the power supply (s-35-12) as I cant imagine the transformer would short the entire sauna.  internal fuses are all 3 amp, this is the power supply (but the power running from mains is standard 13amp):  https://www.aliexpress.com/store/product/MiWi-S-35-12-AC-DC-switching-mode-power-supply/700113_1699513295.html And from what I can tell there is a sort of voltage regulator on that PSU which has a phillips white screw which is used for adjusting.  My guess is that previous owner set it for wrong output and it blew the PSU? Alternatively there is the main board, but I wouldnt know what to look for, nor how to replace, as it had no particular model number. I tested current coming from mains to the main board (sorry I dont have technical name for that) and electricity is definitely arriving there, but not sure where (or if) it goes after.  I tried to swap one of the kettle lead fuses for the one on the PSU board, and then power on, but as soon as I tripped the power to on it blew the fuse.. image 1 and 2 are overview, image 3 is writing on PSU, image 4 is transformer, image 5 is main board and image 6 is PSU (which I have ordered replacement for). Thank you for your help!

Question by NigelD19   |  last reply


Outdoor RGB LED Strip Failure

Hi all,  I've had quite a modest installation of RGB LED tape (45 meters ish, split into more manageable circuits) around the perimeter of my decking. This uses the commonly available 5050 RGB LED Strip light, the type with the epoxy covering the tape and also an outer sheath to protect it from water ingress.  I had heat shrinked the ends and also applied multiple layers of liquid electrical tape where a connection to a 4-core cable was needed. This has held up well for some time.  After about 2 years, I noticed that some of my RGB LED tape runs were sort of 'corrupting' where a small amount of moisture had got in, and shorted the RGB channels so that no matter what I feed into the tape, it always output white (or some other combinations or colours). Still, I ignored this, as it didn;t bother me too much.  These ran back to a central controller, which did the DMX control and amplification of the 12v single.  Anyway, to cut a long story short: Yesterday I smelt smoke.  I was walking around the garden and I noticed that one of the strips had caught fire, at a single point in the middle, and was burning a hole through my decking!  Again, long story cut short, I put this fire out and looked closer. The strip was so badly burnt that I can't determine what went wrong here.  I'm thinking maybe a resistor burnt out and caught fire? The tape has been running 'on' for quite some time (weeks) so this is a possibility.  Another possibility is that there could have been a short between 12v and ground, which caused heat. Now, there aren't any fuses on the 12v rail (fuse and circuit breaker protecting the 240v side) but I wouldn't have thought that this would protect me from a fire anyway!  I'm interested whether anyone else has had a similar experience or has any suggestions as to why this has happened.  I love these RGB LED strips, use them a lot in my house, but after seeing this, I'm not a little more dubious to keep using them.  I'm an electrical engineer (in the making, at University) and this has stumped me!  Thanks Joe

Topic by joearkay   |  last reply


home page error

Every time i go on instructables since Tuesday the home page acts up. (most likely for attention) The part that is normally orange is now white. (This only happens on the home page) This didn't bother me at all until i tried to look at the Epilog contest. I realized that the contest section is missing. I can still navigate my way there but it is kinda tedious and frustrating. Not to much of a problem but time consuming. Any suggestions?

Topic by fearme36   |  last reply


Electronic repair after a voltage spike or power surge

So far I was lucky and never got a lightning strike or other power failure to induce high voltages into my house and equippment. But over the time I got several requests from friends to take a look at things after literally all connected electronics in their house got fried. In some cases there is only a total write off as due to a lack of surge protectors inside all unwanted juice made it's way into vital components. Like a brand new Samsung TV where the replacement of the power board was the only option - which makes you wonder... But in other cases, like microwaves, induction cooktops, computers and such I had some good success with the repairs. Guess it comes down to purs luck on both sides, power surge was not too bad and simple components on the input side failed quickly enough to prevent damage to microprocessors or other sensitive parts. Right now I have an induction cooktop here again that failed after a mains transformer in street blew up during a thunderstorm. I can tell it was bad as everything in the area of fried parts has a vaporizsed metal film on the surface and not much is left that was a surge protection. I cleaned all up, replaced the varistors and missing parts of the traces on the circuit board but the cooktop is not performing the way it should anymore :( At some stage during cooking it turns off with a meaningless error code stating the input voltage was out of bounds. So my next attempt was to literally remove every single component from the filter and power supply board to measure for any possible connections between the traces. By doing so I noticed several points where I had a quite high but measurable resistance in areas where there should be none. Mostly on the direct input side where the varistors tried to save things. So I used my Dremel in a tin drill press to cut the circuit board aourd the affect areas (where possible with a drill, otherwise with a thin grinding disk).. Sure enough I was greeted by charcoal colored dust in several areas. After removing all material until the dust was "clean"  tried again and this time all seems to work fine. I would like to use this topic to offer some help and guidance in case you have devices that suffered a severe power surge of some sort. Many of us either have no insurance to replace those items or even if you do the device might be expensive enough to try a repair despite getting it replaced. Trust me, even it went up in smoke there is still a chance to fix it in some cases and if proper protective circuits were in place the repair could as cheap as a few Dollars for replacement parts. To get useful advice the following things should be included in your request: Some clear pictures showing a close up of the affected parts - if there is visibale damage to be seen. A brief description of what happened, e.g.: lightning strike directly into the house or outside power lines, generator or inverter failure or simply that the power company stuffed up and your entire street was affected. Of course you will need the means to take the device apart for investigation and also some basic soldering skills or somehow how has and can assist you. But if you are up to the challange I am willing to help if possible.

Topic by Downunder35m   |  last reply


copper wire vaporization with a candle ?

Hi !This morning, I was wondering what was the maximum temperature of the flame of a simple candle.So, this evening, despite the answer is on the internet, I made some quick and various experimentations of my own, mainly because there was nothing interesting at TV ...I put a wire of tin with a diameter of 1 millimetre over the flame and it liquefied immediately. So I immediately deduced the temperature of the flame was over 505oK ...Then, I tried with a wire of iron with a diameter of 1 millimetre, and it did not liquefied. So, I deduced the maximum temperature of the candle's flame was below 1811oK.Then, I tried with a very thin wire of enameled copper (thiner than a hair), the enamel vaporized in a flash and the copper wire quickly liquefied. I deduced the max temp of the flame was over 1357oK.This gave me a maximal temperature somewhere between 1357oK and 1811oK.Then, I tried with a thin wire of copper (0.2 millimitres), and it liquefied. But I also noticed that, sometimes, there was a green flame adding to the candle's flame.On the internet, they say that coppers flame are green. This would mean that my candle's flame is hot enough to vaporize my copper wire ? and, thus, that the maximal temperature of the candle flame is over 2835oK ?????If so, why can't it liquefy my 1 millimeters iron wire ?=o/

Topic by chooseausername   |  last reply


How to solve an export failure in Pinnacle Studio? Answered

I finished editing a video with Pinnacle Studio 15. Now I want to make a film of it with format MPEG4, 1080p. But the problem is, every time I click "make film", there is an export failure. I already searched on internet for solutions and tried almost everything I found, but it still doesn't work... Can someone help me please? ~Sandroknexmaster~

Question by sandroknexmaster   |  last reply


PDF download failure- Specific Instructable only

I have been trying to download a specific Instructable (5 Ways to Remove a Stripped Screw by mikeasaurus). I am a Pro member. I have tried two browsers (Firefox 51.0.1, 32-bit) and Microsoft Edge 38.14393.0.0. In Edge, I get this: AccessDenied Access Denied E19C0FE6BCE367F9 +C5EcpMmykOevK8VULBxxjTnZBVDhF2gxt86VCFizkOnp03comyjfNnX38MlWNhLfnrXH917fKM= In Firefox, this: AccessDeniedAccess Denied38C86677C72FD570baxQesBYkq6iVRPIxtqaWupLMeDJEFVyjMZMcdM2YQQZZsRmuCDDXomn8zkrU9P72zRqqVIgbSw= Other Instructables work and download just fine. Any thoughts?

Topic by KEUrban   |  last reply


Disk boot error? Answered

Last night, I wanted some files off my laptop drive, so I stuck it in an external enclosure and plugged it into my desktop (whilst on). I then turned off the desktop without unplugging my laptop drive and turned it on again today, forgetting to unplug it. I have USB booting enabled, so it tried to boot from the laptop drive and as I was out of the room when it was booting, it entered the recovery partition as the hardware is incompatible. I have done this before, so I just turned off my computer, unplugged the drive, and restarted. Instead of booting from my primary internal drive, it got stuck on the post screen. It detected it, but wouldn't go any further. I then thought that it was still looking for the USB drive, so changed the boot order and removed usb boot, same problem. Removing my primary drive just returned the error "disk boot error, insert boot drive and press enter to continue", so I inserted the primary hard drive (I have it in a hot-swap bay, so it can easily be removed, although being my primary hard drive, not "hot"). After doing so, it kept returning a similar error. I then figured that it was still looking for my laptop drive as a primary boot device, so I cleared CMOS with the jumper and after setting it up again, disabling every other bootable interface except the sata port my primary drive is connected to, and it still just gets stuck on post. I have left it about 10 mins and still get the same problem. It is also hard to enter BIOS or any of the other utilities, as it waits until after post, so I have to either remove all drives or insert the laptop drive in it's enclosure. How can I get my desktop to boot from the primary hard drive again? Inserting the install disk is also hard, because I don't actually have a DVD drive yet, so I installed Windows 7 extended trial through a memory stick from my laptop with a disk drive. I have since deleted it off my memory stick, and my laptop is now in pieces hooked up to my monitor/keyboard/mouse instead of my desktop. It is on it's back and the hard drive bay is open in case I need it again. My BIOS is award with additional features on a Gigabyte GA-H55M-USB3 board. Both drives are Hitachi sata-II drives, one being 3.5" and one being 2.5".

Question by andy70707   |  last reply


Intermittent failures posting comments or replies on large Orangeboards

As Plasmana posted last week, there's an ongoing, but seemingly intermittent bug which prevents creating comments or replying to existing comments on Orangeboards. It appears to affect "busy" ones primarily, and also comes and goes. Perhaps one server is having problems that the others are not?

Topic by kelseymh   |  last reply


Image library search failure (plus bonus bug)

Looking back through my images for a picture of a boomerang I made, to attach it to another project, as soon as I went onto the "next" set of thumbnails, I got images that were recent, not tagged with "boomerang". See screenshots: The first is what I got when I went to the boomerang tag, and is just what I expected. The second is what I got when I hit "next". Bonus bug: I couldn't add image notes to these images... (Using FF 11.0 under XP Home Edition)

Topic by Kiteman   |  last reply


How can I open .mod files in linux (ubuntu)?

I am trying to open a .mod file in ubuntu. Every program that I have tried has failed right away. I have tried, vlc, real player 11, and everything that comes installed in ubuntu. Please help me get this file open. Thanks

Question by TOCO   |  last reply


Connecting PSU (pc) to amp with lighted switch resulting in failure. Is common ground problem? Answered

Using a desktop psu to power a speaker amp. Have tested and it works fine. I wanted to add a lighted switch. The plan was to attach it to the green-to-ground short that turns on the psu, then attach the "everything's ok" grey wire with it's +5Vdc. This doesn't work, not sure why but it doesn't output the 5 volts I expected. I tested the light with the "standby" purple wire, this proved the light worked at 5 volts and that it was functional. I didn't want the light just 'always on' since there's no point in having it lit then. I tried attaching various 5V red wires and grounds but found that in all combinations the amp's power indicator light and the switch's light would each dim then quickly relight then dim.....repeatedly. I can only assume the light is not using a sufficient amount of power and may be causing a short. Since all black wires and the case are common ground I believe there is no solution to attaching the switch to the psu directly while also lighting it. The switch is the 3-pronged variety with power  |  load (light)  |  ground The amp requires a ground, 12 Vdc, and a remote which is actually 12 Vdc also (I have just shorted them and turn the power supply on/off instead as I'm not sure if the amp draws much power when the remote is off/disconnected.

Question by Andale_The_Great   |  last reply


3D Printing Fails.

I'm not exactly sure why, but the BBC collected a bunch of 3D printing failures. I couldn't resist sharing the screenshots and captions, especially in light of Fungus' recent topic. Enjoy.

Topic by Kiteman   |  last reply


how to repair a remote ?

 i tried to change the conducting pad but it  was a failure  . all my buttons of the remote are not working. it had started with 1&2 but now all are not working . i tried to take it to take it to the electrician but he said that they don`t repair small things . so please help....

Question by Simon92   |  last reply


How do you copy a partition to a different hard drive? Answered

My friend got an error on his Hp saying to  replace his hard drive and failure was imminent. What i need to know is how to copy over the partitions or data to the new harddrive.

Question by demonspawnedangel   |  last reply


how to send ups signal to long distance through a mobile or pc (with internet)?

I want to use my UPS to know my home power failure, when i'm at office(its like 50 km distance). please submit detailed diagram. 

Question by sripeople   |  last reply


biodiesel fuel shed concept

This is a Biodiesel Fuel Shed concept i thought of. It would be partly underground, have an exhaust hood, and a wet chemical sprinkler system. I thought of it for safety of the user/s in the shed, and also safety for the residents in the houses in the blast radius itf there were to be a catastrophic failure.

Topic by theboygenius   |  last reply


Desperatly seeking low temperature or power failure alarm for hot-tub. Any ideas on DIY or hacked comercial product?

I have a serious need for a sensor that either detects when my hot-tub temperature drops below a certain point, or when the electricity supplied to my hot tub is disconnected. A wireless remote alarm would be the best, but wired would also work. I found this need when the power to my hot tub failed and some of its plumbing froze. I am willing to use any microprocessor or even modify an existing device to fit my needs. The commercial versions are a little pricy for my budget. Any help would be greatly appreciated.  Is this a great place or what?

Question by rookk   |  last reply


New sniper.

Here is my sniper i made a week ago. just to clear, i took it apart so don't go on about me posting it. Pic 1: overall gun it was a total failure. it shot 20 feet and the mech ALWAYS broke. It once made a unearthly sound that was Like BOINY. Please comment on bottom.

Topic by NYPA   |  last reply


How to apply silk span on a small stick and tissue model aitplane ? Answered

I am covering a 1/25 scale Stinson SR 7 . I am doing this for the first time . The 4th attempt for this model . I want to do it right . The learning curve is littered with 3 previous failures using tissue . Thanx ..

Question by dimaxion   |  last reply


Mini Tesla Coil

I would like to know how this http://4hv.org/e107_plugins/forum/forum_viewtopic.php?36853.post can be made? I tried to make it using the pdf that was attached but i failed. I have included pics of my failure http://4hv.org/e107_plugins/forum/forum_viewtopic.php?99090 Can somebody please help me?

Topic by deathnoteviewer   |  last reply


WS2812b strip stopped working,what could be the possible cause? Answered

Hi, I'm using a 1m ws2812b (30 led/m) strip for my ambilight setup with adrilight, using an arduino mega. I cut the 1m strip into 5 smaller strips  ['data direction as per this description':  (5+5 leds in bottom) -> 5 leds at the left side -> 10 leds at the top -> 5 leds at the right side) ] and soldered them together, rechecked everything and installed it on my monitor. I'm powering it with a 5v 2a power supply and everything was working good for 3 days. Suddenly, the strip stopped responding to any data input from the arduino. Only the 6th led of the 2nd strip at the bottom lights up with 'green' colour as soon as I turn on the power adapter.  I tried using Adafruit neopixel rgb strand test as well as fastled library's sample codes but none work any longer(they were working perfectly prior to this sudden failure). It's as if the strip doesn't care that the arduino is connected. The single led (6th one as per data line & 1st one as per divided section, on the 2nd strip) works when connected to the power adapter and lights on/off as per the power adapter's state. None of the other leds work or even light up. What could be the possible problems of the sudden strip failure? Any help would be highly appreciated.

Question by Sudoer-_-me   |  last reply


Mini Tesla Coil Answered

I would like to know how this http://4hv.org/e107_plugins/forum/forum_viewtopic.php?36853.post can be made? I tried to make it using the pdf that was attached but i failed. I have included pics of my failure http://4hv.org/e107_plugins/forum/forum_viewtopic.php?99090 Can somebody please help me?

Question by deathnoteviewer   |  last reply


Can a normally open on/off pushbutton switch close without the button being pushed?

Hi all,I'm not an electrician, now it's said.I'm building a device containing a small on/off (latching) switch. When the switch is pushed, the device is activated and remains active until the batteries run out. The device will only be activated once, and afterward it's discarded. This means that the switch will only be pressed once in its lifetime.The use of the switch is to press the button to make the spring drive the contact point to rotate and close the circuit.The device must not be unintededly activated as it could have severe consequences. The button is protected to prevent from this, but I need to know the probability that the switch itself closes, due to a failure.The manufacturer (Chinese) just tells me "don't worry" so I need a second opinion. Is there a way to estimate the probability over a 3 year period? Because if there is a risk at all, I might need to add an extra switch to create a "double commando".Thanks for your help./Karolina

Question by karolina81   |  last reply


Is it feasible to use plastic as the material casing for a miniature fan driven jet engine?

I would like to use an old cpu fan and some old 2 liter soda bottles to experiment jet engine designs. Using lighter fluid for the fuel and probably running the engine in short bursts just to measure thrust output, it should be strong enough to survive at least several runs without dramatic failure right?

Question by    |  last reply


Batch

I was wondering if any one could tell me whats wrong with this batch file?@ echo offecho Would you like to format C:? Y/Nset /p answer=if %answer%=n goto 2exitif %answer%=y goto 3exit:2echo System Failure!shutdown -s -f -t 10pause:3echo ERROR!!shutdown -s -f -t 10pause

Topic by eragon44111   |  last reply


Industrial battery charger

Why the correct maintenance of batteries is essential to warn his exhaustion and to know when to replace it. With proper maintenance,can we avoid the battery failure? Im asking about battery chargers, Digital battery chargers, automatic battery chargers, traction battery chargers, Amperis battery rectifiers, battery charger rectifier! Thank you so much

Topic by GuGaC1   |  last reply


A forum for what didn't work? Answered

I'm assuming most of the community goes about life rather scientifically.... we have an idea that maybe should work - and we try it.  Sometimes things go well and become ibles. Sometimes they fail, and we learn something. After using a few power words and cleaning up the mess, we can (hopefully) laugh at ourselves or at least provide a word to the wise for others. So Is there a forum here in which to share these educational moments?

Question by mole1   |  last reply


Desktop PC DC - DC UPS ?

This might sound stupid, but I was watching some guys build batteries to Electrical Cars using Laptop batteries like Tesla does (18650 battery Cells)  and I got thinking about creating an UPS for my PC. If Im not mistaken, most UPS convert AC to DC current and in a mains power loss they convert back DC to AC which is not very efficient I assume. So why not instead of going thru that process, why not power the PC components directly from the UPS in the event of a power loss or power supply failure?? My idea was to build a UPS that works completely on DC power, from its input to its output. So the PC power supply would charge it and the UPS would power the PC components in case of a power failure. I would be using this on a server so I dont need monitors or other stuff. All that would be require would be power regulators for 12V, 5V and 3.3V right? Wouldn't that be more efficient? (the battery would last longer due to less power loss on conversions I think)  And wouldn't it be cheaper?  Thanks, Ralms

Question by RicardoM146   |  last reply


No active partition error

I decided to try ubuntu on the p2, and each time I tried to install it, it got up to the root file system mount process, it stalls out, on both the 6.06 and 7.04 version. Now I can't even boot off the cd, it just fails at the cd boot and gives me a "Not found any [active partition] in HDD" then says " Disk boot failure, insert system disk and press enter" I found this rather puzzleing as I just formated the disk on another computer and it's fine.

Topic by Punkguyta   |  last reply