Hydroelectric Generator

This is my first topic, so I need your opinion - is this possible? I have all of these items.

Topic by AdvanŽ    |  last reply

Boss DS1 pedal not working anymore, any solutions?

I bought a DS1 not so long ago and the battery had died. I didn't want to go to buy a new one so I decided stupidly to connect a 12V plug that I had lying around. It was working fine for a minute until I started to notice a burning smell. The pedal stopped working altogether and now I'm left without the pedal I use most, and don't have the money for a new one. I don't know wether to throw it out completely or try and fix it if it's just a small component that needs replaced. If i put a battery in the light comes on, sound still goes through, but no distortion. Any ideas on what I should do?  Cheers in advance 

Question by MattB386    |  last reply

HP iPAQ - what can I do with it?

I've got an HP Ipaq HX2100 gathering dust - I used to use it for reading ebooks on, but now use my blackberry. I was going to put it on ebay, but it wont sell for much, so I'm looking for idea's for what I could use it for. Doesn't have wifi on it so it kinda limits the options I suppose. Any idea's? Cheers, Pha3dr0n

Topic by pha3dr0n    |  last reply

knex pocket pistol

This is my knew knex pocket pistol, it can fit in a pocket (obviously) and is very powerful here is the link for the instructable

Topic by dynamite_kid    |  last reply

How do you wrap duct tape and clear tape around irregular objects?

Objects such as funny shaped cardboard art and odd shaped tables. I am talking about wrapping tape, smoothly and cleanly, around objects that don't have smooth sharp edges. How can you do this?

Question by coolcarl89    |  last reply

what is the relationship between cavitation of pumps and pressure of liquid and temperature of liquid?

I want to know the relation of cavitation and liquid pressure and temperature? 

Question by waila4    |  last reply

Interfacing HC 05 with Atmega?

Somebody please tell me the code to turn ON and OFF a Led on atmega8 board using hc 05 Bluetooth module Some what like this

Question by Mayoogh_Girish    |  last reply

What is this; what is/was it used for?

It is tin/aluminum, obviously made to be hung on a wall.

Question by LeighA5    |  last reply

How to cut round disc shapes, 1"-2+" from abalone shell or any seashell?

I know there are hole cutter for different things, but they have a drill bit in the center. I don't want a hole in the center. I see seashell disc all over, but wonder how they are cut. I do know that they must be cut in water to avoid inhaling the toxic shell dust, so a rechargeable drill is a must.

Question by jayj    |  last reply

How to make a mold

Hi there! :) In a couple of weeks I'll receive my first 3D printing! I'm so excited about it! One of my first projects I would print is a Flower Pot and... I'd also like to print a mold of this Flower Pot but I have a question: > First check the image of the Flower Pot dsign< How should be the design of the mold to allow me to make a new models with concrete (cement). I don't know how to solve the holes. Look, if I do with two external parts and one internal part... how can I do the holes and after take out the mold? I will think more about it but, if you have any idea... it's going to be great read it!! Thanks a lot!! =)

Topic by Kitus87    |  last reply

Veteran searching for land in Florida with septic and water, electric.....for tent or small cabin living?

Hi! Are there any tracts of land in Florida for sale well and septic that I could tent or yurt live? I am a veteran...and as you know they are getting to reduce or compensation to less then half..from what I have been told..I fall into that category. So....just trying to prepare... 07 lost everything I had..stage 4 cancer....don't want to wonder the streets. Any ideas appreciated....boat living, rv living....Florida - near water or ocean I don't have a lot of money for a down payment. Thanks Ron

Question by RonaldC83    |  last reply in the Classroom

Hello All, I have been in the Instructables community for the past 9 months on a personal account.  I currently teach computer technology to grades 5 and 6.  I had a thought that this community could be a great resource for my students to look for information and also share. My question to the community is this.  Is there a designated area of the site or community that is solely education based or are there groups of teachers that share how they use this site and contents in the classroom?  More specifically computer tech type classes. Hoping to hear back from some fellow educators. Regards, MyDemonsTech 

Topic by MyWlakeTech    |  last reply

How to restore files automatically removed by Windows 10 update? Answered

Hoping someone here can help me with this. I have been searching online for about 2 hours and found lots of answers in other forums, but none that seem to work for my situation. My computer skills are extremely limited.  What happened, as far as I can tell, is that Windows 10 updated itself sometime last night and, in the process, deleted pretty much everything from my friend's computer, mostly from the desktop file I think.... After poking around for a bit, I found the missing files in "deleted apps" but I don't know what to do about it.  Do we have to download and install everything again? Or is there some way to recover/restore them? 

Question by ThisIsMyNameOK    |  last reply

220v to 12v transformer Answered

Hi I have two questions. In the drawing below, which diodes do i need to use and will this be compatible with a hand crank generator? Thank you for any help!

Question by GhengisKhan1981    |  last reply

Joining carpet pieces

I'm looking for ideas on how carpet pieces might be joined together into a whole (e.g. rugs made from carpet samples). The gaffer tape solution which is posted all over the web in tutorials isn't strong, only lasts a few months and doesn't work well with small carpet pieces.  I've successfully sewn carpet piece in the past with fishing line (so the stitches are strong and invisible) however this technique only works well with larger pieces due to the time it takes and amount of work.  Has anyone here tried any other techniques and been successful with both large and small carpet pieces?  My other idea was to use wood glue to glue the pieces to a hessian sheet.  I haven't tested this but the hessian base on most carpet pieces should merge well with the hessian sheet. thoughts or ideas appreciated.

Topic by garrettlynch    |  last reply

Air cannon

After wanting to make an air rifle for awhile I have finally decided to do it.  I plan to use 80-100 psi from a bike pump to power it.  I plan to use a 1/2 or 3/4 inch QEV (something like this;=1495573897&sr;=8-12&keywords;=3%2F4in+quick+exhaust+valve).  Do you guys know if a 2L soda bottle would be a good air tank or should I spend the money to make a pvc or galvanized steel one?  Would an air gun connected to the QEV work well?  Thank you for your time and help                        -James

Topic by TypeNameHere    |  last reply

How thick should concrete be to keep it strong, non-brittle?

Also, will concrete stick to strong corrugated cardboard, steel, aluminum, plastic? How can you get concrete to take a particular shape (and dry in that particular shape) without it becoming messy and uneven?  These questions are for a sculpture project that I am working on.

Question by coolcarl89    |  last reply

Looking for someone to help buld an Arduino linear measurement project.

I'm looking for someone to help me build an Arduino linear measurement project. I need to measure less than 6" stroke with some accurate repeatability. I'm willing to pay for the programming and any parts I might need. Email me if you are interested in working on this with any questions you have... Thanks, 

Topic by rpmlou  

When does the newsletter come? Answered

I signed up for instructables' newsletter, but I have never got it. I put my email in the first of this year, and I still don't have it. How long does it take to send?

Question by random_builder    |  last reply

Best Smartphone to not use as a smartphone?

I would like to buy a smartphone but a don't want it for calling or texting. I just want to use it for listening to recordings and music and watching downloaded videos and I would like to take pictures with it it and do all the other things a smartphone can do except what it's designed for. What phone would you recommend? I want a phone that has lot of accessories made for it. I would like this phone to be under 150$. I want to also use this phone for lots of DIY projects.

Question by sonic broom    |  last reply

what's the difference between -12V and GND? Answered

first, i thought that if some electronics said -X V, it was just GND, but then i saw both in the same circuit,  so what's the difference? and how can you use -12V

Question by godofal    |  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

direct nodeMCU control?

Hi guys this is my first attempt on automation using the nodeMCU lua ESP8266  My goal is to control the gpio via wifi without connecting the node to my home network it should dependent  I have found e bunch of code but it has to be joined to my homework thanks

Question by Conwyn'    |  last reply

Can liquid starch make cardboard really stiff and hard?

Especially thin cardboard? 

Question by coolcarl89    |  last reply

Transistor touch switch with relay. Will this work?

Hi So, I'm new to electronics, but I'm really interested to learn. As you will see from the diagram below, i still have a lot to learn. Basically what i need to know is, will the diagram below work in practice. I tried it out without the relay and with a led and it works i.e. pos to one side of the transistor, relay to the middle of the transistor and led to the other side of the transistor with the other end of the led to neg. I'n the diagram, i tried to add a relay and replace the led with a solenoid. Will this circuit work?

Question by GhengisKhan1981    |  last reply

Sound effect button?

I'd like some instructions on how to make a button that plays the same 2-3 second audio sound when it is pressed. It should be able to last for a pretty long while if you know how to do that. I want it to look like it's DIY and not from a factory but also good enough that someone would put it on their desk.  I need the cheapest possible way to do this as well as instructions for a dummy who doesn't know much about technology. Thanks to anyone who can help!!

Question by Tofus    |  last reply

Anyone have plans for a queen size bed with 21 inch clearance underneath?

Hi!  I'm looking for plans for a queen size bed with 21inch clearance underneath for storage that is super sturdy.  I have some ideas, but I could really use some more help.  And, like I said, I need something that has proper support but has lots of space underneath for storage bins.  Anyone have any ideas?  Thank you!

Question by E D    |  last reply

Reduced views

I am feeling a little foolish while writing this, but I have noticed that the views per instructables has reduced remarkably. Earlier the instructables featured on the homepage had around 5000-7000 views in a single day and now that number has reduced to 500-1000. for example- and i would like to add that these instructables are Fabulous. Not only this, the views on a normal featured instructables has also reduced. Is it because of that, that too many Instructables are being featured? I don't know, but I think something needs to be done to address this issue.. If you agree or disagree please leave your valuable suggestion.   Credits: Wooden USB-stick by X-plain,  Live Instructables Followers Counter by Nikus,  Sustainable Geometry by ENGL212.

Topic by Pranav Jhunjhunwala    |  last reply

hot end of 3d printer problem? Answered

Hello instructors  i build big 3d printer 1000mm *800 mm *800mm  its working ok . but i have problem with hot end in the second layer stop milting filament  i build three 3d printers but this the first time i see like this problem if any one have ideas what the solution  thanks to u

Question by براءا    |  last reply

LCD screen works from touch?

I was taking apart a small department store card reader and as i was doing so i noticed that the LCD screen would kinda  work from my fingers touching it.  Some parts of numbers and indicators glowed as I ran my fingers across it.  Is this from static electricity is my hands?  Or just residual power in the display.   All wires were removed from it so no capacitors to power it or anything.  I did notice that the silicon-rubber-carbon? thing on the top and bottom of it were attached.  Can someone with a knowledge of how these displays work please explain this phenomenon.

Question by TypeNameHere    |  last reply

Science of Baking class project doesn't work

When I go to the last step of the Science of Baking class to post my class project picture, I get one of two things: 1) The "Class project" / "I made it!" box is missing entirely, and the class questions are visible as normal or 2) The "Class project" box is visible, but contains only the text "Share a photo of your finished project with the class!" and a "Show more" button, which does nothing when I click it, and meanwhile the class questions are missing entirely.  I've tried refreshing the page, re-starting the computer (it re-started itself because that's how it rolls, and then I re-started it intentionally to see if it would help), and trying on two other computers, all with the same results.  The operating systems and browsers I've tried are Windows XP with Chrome, Windows XP with Firefox, and Windows 8 with Chrome. The class projects in the Knitting class are working fine, and the one for Science of Baking was working fine last time I saw it, which was Wednesday. EDIT: Added Screenshots from the first computer (XP w/ Chrome). Apparently sometimes the non-working "Class Project" box disappears and the questions appear when the page finishes loading (hence the loading indicator in the screenshot), but not always. EDIT2: Added link to class project page

Topic by christa627    |  last reply

Can a cracked guitar neck be fixed?

Hi, I finally signed to Instructables. :) My colleague is a big DIY guy and that's how I came across Instructables. Today, while searching for something I came across homemade recipes for musical instruments and that really hooked me on. Especially the one on turning an 6-string acoustic to bass acc. :) I had tried learning the guitar but didn't want to spend too much on the instrument, so I bought a second hand one from a garage sale (proceeds were for the city's stray dogs - so for me it was a bit of a win-win...almost :) ) What I realised much later is that: 1) The wood under two of the tuners (on the under/ventral side of the guitar) has splinters 2) One of these tuners has lost a fastening screw because the hole in the wood has widened and splintered a bit 3) the base of neck, just before the curve block that connects to the box, has a 1-2mm crack running across it (horizontally) Question is, can these issues be fixed so that a beginner like myself or someone who really doesnt have the money to own a guitar but wants to learn can still use it for some time? I never found the time to go to a music shop to have it checked. I also feel they will probably turn me away because they are more interested in selling guitars than fixing them. I really dont want to just throw it away. Second hand it may be, it just doesn't feel right... Your inputs would be greatly appreciated. Thanks! P.S.: Am at work right now but I will try and post images of the guitar as soon as I can. I had taken photographs of it a looong time ago. As a result, tuning goes off every now and again. On a colder day, tension increases and the crack widens. Update: Terribly sorry for the delay in uploading the pictures. I had a set that I had taken a year or so ago but I seem to have deleted them. Just got some time off work, here are the pictures. The crack, which I had earlier described as horizontal, is in fact, vertical. So much for my memory...

Topic by aristarkhos    |  last reply

Make something out of a beer bottle and win up to $1000

Lucky Buddha Beer is offering up to $1000 in craft store gift cards for the best re-use of its bottles. They’ve got less than 50 entries and there’s less than a week left. Check it out:

Topic by luckybuddha    |  last reply

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

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

Topic by THX 1138    |  last reply

how should i set up an electrolysis cell in order to convert magnesium sulfate into sulfuric acid? Answered

hello, after finding out copper sulfate is expensive everywhere, ive decided to try making my own, from sulfuric acid which i intend to make form magnesium sulfate, aka epsom salts. i am going to try and react copper oxides with any formed sulfuric acid then crystalize it and remove it, but, im not exactly sure on how i should set up this cell, to ensure the formed magnesium oxide/hydroxide doesnt react with the sulfuric acid again, as well as what the best voltage/currect would be to minimise polution/ errosion from my lead electrodes (just plain old lead, i plan on forming lead dioxide in this reaction also). any help would be greatly appreciated, also whoever solves my problem will get a best answer form me.

Question by oldmanbeefjerky    |  last reply

Using a 3 wire fan with Arduino? Answered

So I got a couple of 12v PC fans. They have a black wire, a red, and and yellow. So if you just hook up the red and black wires to 12v, the fan works, but you no way of controlling the speed. So this yellow wire, I'm assuming it's much like the control wire on a   servo? If I hook up this yellow wire to the Arduino should I be able to control the speed of the fan using PWM??? I just want to be sure before I fry my Arduino :D Thanks!

Question by HavocRC    |  last reply

What choice of motor for a robot

Hello, I'm making researches about electric motors, I know very little about them and it seems to be a vast world. I don't have any detailled project yet, but I'd like to make a small robot that would be capable to move, that implies using electric motors. Forums have many useful data about them, but what it lacks is precise user reviews: what type of motor would you use the most, and why? Is it simpler to use servomotors over DC, or brushless? Prics must be a criteria of choice, but can I found cheap motors with good performance? Thank you very much for your help

Topic by armandbon    |  last reply

How to make a small 3x3x3 led cube?

Hey I want to make a small 3x3x3 led cube for placing in my desk. I see some of charliplexed cube but they are difficult to understand. So pls hlp me. I want a small cube run by cheap small micro-controller like attiny. Pls give me detailed circuit and code to run. Thanks in advance 

Question by Soumojit    |  last reply

Inbox Improper Message

Hi when I click on my inbox in instructables it gives me my past message and says "Sent a few seconds ago" I'm not even sure if I receive messages anymore. I have a Mac and use firefox to view Instructables.

Topic by Kris82  

Refreshing for every Lesson

Ok, this happened to me on the lastest Google Chrome version on a WINDOWS 10. ..And an Amazon Kindle Fire's Silk browser! The following captures/page were: and

Topic by Bantman    |  last reply

Is there anything that can make thin layers or pieces of cardboard hard as a rock or metal beside poly/epoxy resin?

I want to make the cardboard as hard and unbendable as possible. With concrete? With foam coat? What else is there? 

Question by coolcarl89    |  last reply

build rc car without ASK transmitter receiver module

Hello  unfortunately ASK transmitter receiver modules like HT12E and HT12D are not available in my country and i cannot buy them from ebay  i want to build very simple rc circuit via radio frequency  is there any way to do this without arduino or any micro controller  because i want it to be cost efficient  thank you 

Question by ShadyM1    |  last reply

How do i remotely track if a planted tree is alive or not?

Remotely i need to track/monitor if planted trees are alive or not, growing or not. So could you tell some parameters/characteristics of living trees like pH level of soil, moisture level, voltage across it when tree is alive. & required electronic sensors, technology for remote tracking/monitoring. 

Question by radkol    |  last reply

Is electromagnetic wave can travel with ultrasonic wave? Answered

Is electromagnetic wave can travel with ultrasonic wave.If yes,then how far an ultrasonic wave will travel in air medium.

Question by Rajkumar2506    |  last reply


I am currently taking my DT A-level and as part of our final project we have been instructed to find a client with a product in need to be manufacture and designed and to do this for them, with them in the end being able to keep the final designed product, however they would need to fund the project. So I am looking into finding a client with a unique project, that uses multiple materials and processes for me to design and make for them, that would be willing to give me regularly updates and feedback into their views on the project so the final product will be what they wanted. If you believe this to be you please contact me and we can discuss it further! 

Topic by SophieW24    |  last reply

New Channel for Educators - a call for projects

To the teachers, educators, instructors, advisers, Scout leaders, home-schoolers, unschoolers, and regular folks who just really want to help out a teacher.... I'd like to present to you the new, never-before-seen channel exclusively for educational content! That's right. We're trying to put everything all in one place to make the site easier to sift through as an educator. Need a project to accompany a unit on covalent bonds? What about an activity to teach kindergarteners to share? Hands-on projects are awesome teaching tools, and it's about time for those projects to live in one place. It's a mostly-empty channel at this point with only a handful of guides in it (and select few projects that I unilaterally recategorized because they were too perfect not to include), but it'd be nice to grow it into a large enough section of the site that it becomes actually useful to teachers. If you don't mind spending a little extra time on the site, I'd really appreciate it if you could recategorize some of your explicitly academic content into the new Education channel within the Living category. We're trying to load this new channel with materials that include the following: subject areas for the project, recommended age ranges, and the learning objective(s) for the project or guide. We'll be running a contest for teachers starting in December, giving away class sets of Instructables pro memberships along with the usual fare of Apple products and Amazon certificates. The MOST IMPORTANT elements of anything placed into this new channel are as follows: subject area age range learning objective If you want to recategorize any projects you've done that are specifically for teachers, you may. What would be most helpful is to create a guide of useful projects that is tied to a specific learning objective. Check out what the Children's Museum of Houston did for an example of what we're looking for in this channel. Checking for understanding: 1- What are the three most important ingredients for a project added to the Education channel? 2- What category is the Education channel in? Extra Credit- Do you have to be a teacher to enter a project or guide into the new channel? Extra Extra Credit- What are the three most important components of a project entered into the Education channel?

Topic by wilgubeast    |  last reply

How do I join 2 neoprene sheets in a sharp 90 degree angle?

I'm creating a neoprene casing to a small product and I'd like it to have a rather straight and stiff appearance, almost like a molded detail. For that reason I don't want to use normal seams (flatlock, overlock) to join the sides of the casing as it would cause bulgy surfaces or a too wide radius. How is this done in the industry? Could it be done either like alternative 1 or 2 in the picture? Which one is to prefer and which joining method is preferable (sewing, glueing, tapeing)? All ideas are welcome!

Question by karolina81    |  last reply