good ideas for a van de graff generator belt

I'm making a van de Graff generator and i was wondering what would be some good things to use for the belt could a bicycle inertube work or would that be to conductive i read some were that usually black things have a slightly conductive coloring or something one more thing i was looking at the triboelectric series and was wondering what end the belt should be on aswell as the top and bottom roller

Topic by Tanners 10 years ago  |  last reply 4 years ago


Gargamelknex: I'm back!

The last instructable was a year ago... :( Sorry about that  But..... My ballmachine "limonium" is for 80% done! I will post it in summer 2015.... More k'nex buildings is coming soon! - Gargamelknex - 

Topic by Gargamel-Knex 4 years ago


Vulcanizing Rubber....? From Latex Paint?

                 Vulcanizing rubber... latex.                          sulphur.            Heat!                                           Pressure. those are the basics according to research.  but how much heat?   how much pressure? can i use that old can  o latex paint?  can i use sulphur from the garden store?                    hazards?                    techniques?

Topic by Toga_Dan 4 years ago  |  last reply 4 years ago


Stored energy

    Alot of people have amazing instructables on how to gather energy  be it solar, wind or hydro electric but not alot on how to store it. So I guess what i really need is some storage instructables cuz Im at a total loss. Please help. 

Topic by hackencoff 4 years ago  |  last reply 4 years ago


Robots that Draw Circuit Scribe Projects and More @ Knox Makers February Build Nights w/ Circuit Scribe

We had fun for a couple of Instructables Build Nights in February with Circuit Scribe at Knox Makers. We kicked things off with an Intro to Circuit Scribe night so that everyone could get familiar with the kits, go home, and get some ideas on projects they would like to make. We had one guest who showed up and tinkered with the idea of adjusting motor speed by switching back and forth between short and long conductive ink paths in a unique way, and this led to a later project by another participant that we documented and uploaded as an Instructable. We also had a member of our group who wanted to see if they could get our polargraph drawing machine to draw a Circuit Scribe project. This led to a Featured project in Technology >> Robots! This is a list of the Instructables we came up with: Circuit Scribe Drawing Robot Adjustable Speed Circuit Scribe We also created a 123D Circuits sketch here: Masked Hero Blinkeneyes Overall, we had a great time tinkering with the kits. We may have some more ideas floating around, and we were able to get some basic electronics experience into the hands of new learners who needed the exposure to some foundational basics of electronics. The kits helped with that as a kinesthetic approach, because learners were able to follow through exercises and see with their own eyes what happens when they manipulate electronics with their own hands. We ended up adding the kits to our technology outreach cart, which we share with local libraries, museums, and schools in our area. This was an excellent opportunity and a blast.

Topic by smalltortoise 4 years ago


Weird junk characters in Firefox?

So, I have this annoying problem with Firefox... As I browse the web, opening and closing tabs, I get an accumulation of (Japanese?) characters all over the tabs at the top of the screen.  It starts with one or two, but soon builds up to obscure the tabs, so that I can't find the Xs to close tabs, or even switch between them (see the screenshot). The characters occur no matter what websites I do or do not visit. It eventually gets to the point where I have to close the software to get rid of the mess. The problem has persisted through uninstall/reinstall of the browser, and the only add-ons I have running are a dictionary and McAfee site advisor. Yes, I know I could just switch to Chrome, but FF is my favourite browser. Anybody know a cure?

Topic by Kiteman 4 years ago  |  last reply 4 years ago


IoT server / gateway

Hello Instructables, Like a lot of people lately I'm experimenting with IoT and Home Automation. There are a lot of interesting projects going on, also a lot here at Instructables. But a thing that i run against is the fact of IoT Gateway/server software. On Google I found differed IoT gateways/servers that I wanted to share with you guys. If you have to contribute to my list, please do. All software's have there pros and cons, so more project the better.  - Thingspeak. This is a in the cloud site to witch you can send your sensor data and switch things - Exosite. Pretty similar to Thingspeak - IFTTT. This also a cloud site, with witch you can have your sensor data communicate with other services on the web like google, facebook, twitter - Openhab. Is a open home automation software that runs on the Raspberry Pi, it also has a android app. Unfortunately not that easy to configure. - EasyIoT. Is a pretty new server application, that looks great on the web and phone browser. Still new and in development.  Like I said all projects are have there pros and there cons. If somebody has to contribute to this list, please do. 

Topic by mfaber1 4 years ago  |  last reply 4 years ago


need help with LARP weapon design and construction

Hi crafters.  I'm in need of help with constructing a larp weapon, fighting fan, that could open up with a press of a button or pull of a lever N close itself upon releasing it. could any help me with the design of the mechanics n gear system I could use to make it work? It should not be of electronic nature though. Here I attached a drawing of how the weapon should roughly looks like . i'm thinking of using rounded edge aluminium flat bars(looks like flat metal ruler) as the bone for the 'blades'. Really appreciate the help.

Topic by meowgod 4 years ago


Newbie needing help please

Hi everyone, I'm new here, and new to making circuits. I've been scrapping them for quite some time and feel terrible about how much goodies I've thrown out in the process :(  anywho, I saved a ton of it, And today I picked up a "Futura 100 color graphics at its finest" box, it has 5 knobs on the front for: Hue, saturation, contrast, black, and white, has a power on led and reset button, floppy drive. in the back it has a 3-25pin connectors (2female and 1male) for printers, a video in and video out, power switch and 3 prong plug, fan, keyboard connector, and a 9-pin male test port?  Inside it had a dark drive and has TONS of ic chips. ill quit blabbering and get on with it, does anyone have any ideas on what this can be turned into? One or multiple projects is fine, as long as this thing gets a good use. I'm hoping to make a variables power with led display for my atx.

Topic by Ryan53090 4 years ago  |  last reply 4 years ago


Image Annotations Not Displaying

I am finding that I no longer see image annotations on Instructables. This happens regardless of browser, and is reproducible on two computers (both running Win 7). It does not seem to matter if I am logged in. The annotations are still present if I view my own Instructables in "Edit" mode, but I cannot see them when normally viewing my (or any other) Instructables. Is this a known issue?

Topic by LynxSys 4 years ago  |  last reply 4 years ago


What Did You Build Contest from UP

Here is a contest from Up railroad that might interest this community! Please enter your picture to help support charities.  sunshine~ http://www.up.com/whatdidyoubuild/index.shtml

Topic by sunshiine 4 years ago  |  last reply 4 years ago


Circuit Scribe Makey Makey Build Night @ The Inventor's House

En esta ocasión regreso la BuildNight a nuestro hackerpace y estábamos muy contentos, toda nuestra comunidad estaba muy entusiasmada por recibir la tinta electrónica mas famosa del mundo "Circuit Scribe" nos encantaron los modulos que se incluyen en los kits de desarrollo. Ademas es genial usar 123D para poder simular los circuitos antes de empezar a trazar en físico, aunque aun le faltan algunos extras a la plataforma nos pareció genial Les dejo los links de algunos de los proyectos que realizo nuestra comunidad Mho PlayGround Circuit Scribe Tarjeta de regalo interactiva Y ademas algunas fotos del evento, un saludo desde Mexico, sus amigos de The Inventor's House y muchas gracias instructables y Circuit Scribe

Topic by sabas1080 4 years ago  |  last reply 4 years ago


12v to 120v sine inverter boosting

I have a 20 year old van. The a/c leaked and it is much cheaper to buy a 120v window unit ($140 with a 3-year walk-in exchange warranty) than to pay a shop to rebuilt the vehicle a/c. I chose a 5k BTU window unit that uses 4.1 amps running, and have a 1k watt sine wave inverter. Alone, the inverter will not start the a/c unit, but will power the fan. I confirmed a trick to start motors with an inverter. I connected an 8" bench grinder to the inverter and started it. It took a few restarts to get it up to speed. Then I started the a/c and it ran without problems. The bench grinder motor was able to supply the reactive power the a/c compressor needed to start. Both continued to run without straining the van's alternator. BUT, I don't want to travel with a running bench grinder going, that's not safe. Is there another way to supply the reactive boost that is safe to travel with? Once I get a simple stable way to run the a/c I'll work on a mount to vent the hot side. The van has sliding windows.

Topic by DavidN71 4 years ago


Need a 19.5VDC battery pack for my micro projector

I'm looking to build or buy a battery pack to power my LG HW301G projector. The specs say: LG HW301G 19.5 VDC 4.9 A (on the projector label) 100W (per the manual specs) I'd like to carry it around for guerrilla projection projects. Battery pack(s) should fit on a utility belt or in a backpack. I was thinking about a pack of 13 AA batteries in typical battery holders, paralleling 4 together to maybe get an hour of projection time, but I'm worried the normal wiring that comes with those holders might not handle the current. Anyone have any ideas? Stuart

Topic by unklstuart 4 years ago  |  last reply 4 years ago


MP3 + Speak alternative power supply???

I have posted this this in 'Kids' forum also, I hope that is ok? MP3 Bedtime Stories ..... Battery  Hi, new here so please bare with me.....long story cut short. My Grandson is five years old and I thought it would be great, and get him to sleep quicker at night, if I could come up with some method of playing MP3 stories. I know, CD player, etc. nope, at five years old they want to take EVERYTHING apart. So no mains leads, CDs, etc. What I came up with was buy a simple and cheap (£2.99) MP3 player off ebay, pair it with a small battery powered speaker (£5.99) and away we go.....doh!   Both items are amazing and just right for the job BUT both are battery powered (will go flat after he falls asleep and they are left on) and two, they both have on-off switches underneath which stops me mounting them on a surface. Sorry this is going on so long....... What I thought of doing is getting a loooooooong lasting battery source (would 9v last a lot longer) and bringing ing it down to 1.5v (x2 one feed for each device). Then it wouldn't matter if they were left on overnight a few times -  or am I deluded.  Or better still, can anybody please advise? Both the speaker and MP3 player have internal rechargeable batteries but they rely on a VERY busy mum recharging them daily so I am looking for an alternative. thanks

Topic by TN1946 4 years ago  |  last reply 4 years ago


repairing cellar walls?

 We bought a house last year that had some water damage on the cellar walls. Last summer I redid the drainage around the house as I suspected that that was the reason for the damage. I am now setting out to repair the inside damage. I should not that I noticed no damage to the outside walls while redoing the drainage.  The inside wall damage consists of 'blistering' and loose light cement/plaster. The cinder blocks seem to be fine and I have not found mold. I have scraped away the loose stuff and will now patch the holes.  I have been told to use a polymer-based household cement but would like to ask the instructable community for advice.  I basically have to resurface parts fo the walls and patch a few deep holes.  How should I do this? Thank you.

Topic by Crackpot 9 years ago  |  last reply 4 years ago


Cycle Skates

I once read that technology never dies.  There are people today that still make flint knives and start fires by friction.  Furthermore, these skills have been passed down generation to generation.  To prove the hypothesis, the authors got an old Sears Catalog from the 1890s and picked out two pages of stuff they had never heard of.  They found all of them still available for purchase somewhere. Why then, can I not find the Cycle Skates in this 1923 video?   https://www.youtube.com/watch?v=UjtPn4orR9A They were apparently invented in 1870. (http://pedespeed.blogspot.com/2007/07/following-is-from-leonard-de-vries.html) I cannot find the patent info as they seem to be from France. I know in 2004 someone "re-invented" them as Chariot Skates.   Anyway, I would like to learn how to make my own 1870 / 1923 style cycle skates.    Anyone out there who can help?

Topic by justjimAZ 4 years ago  |  last reply 4 years ago


February 2015 Build Night with Circuit Scribe

#BUILDNIGHT 20 SPACES AVAILABLE Deadline to sign up: Friday, December 19. Accepted spaces will be notified by Monday, December 22. Read our FAQ to learn more about the Build Night program rules and how to make the most out of this event for your space. FEBRUARY BUILD NIGHT We are partnering with Circuit Scribe, a rollerball pen that writes with conductive silver ink, for our February 2015 build night. Sign up to participate in the build night and we will ship you a package that includes the following: (1) Developer kit (2) Basic Kits w/ Book (1) 5x pack of pens HOW TO PARTICIPATE Host a Build Night: pick a time in February to host a project build night using the Circuit Scribe . You can host multiple build nights during February to work on your projects. Post 2 Instructables: post 2 Instructables and 1 123D Sketch using the Circuit Scribe kits. Not posting these Instructables will affect your chances to participate in future build nights. Brownie Points (not required): after the build night post a forum topic on Instructables about your event. Include pictures, stories, etc... Here are two examples from past build nights: Noisebridge and Makers Local 256. We may even feature your photos on the homepage. REWARDS: If your submitted Instructable for this event gets featured by one of our editors we will send you an Instructables Prize Pack which includes: Instructables t-shirt, stickers, and patches. This forum post has guidelines for posting feature worthy projects. Be sure to let people at your event know so they can win a prize pack! Limit 3 per makerspace. RESOURCES 123D Circuits Circuit Scribe Instructables App (for documentation during the build night): iOS and Android REACH OUT TO US ON SOCIAL MEDIA #BUILDNIGHT #INSTRUCTABLES #CIRCUITSCRIBE Twitter: @Instructables, @circuitsio Instagram: @Instructables https://www.facebook.com/circuitsio https://www.facebook.com/instructables SIGN UP: Fill out this form

Topic by Carleyy 4 years ago  |  last reply 4 years ago


Disconnected Wires

So I'm working on a heart sensor, and pulled out the wires. I think I can fix it with a  little bit of solder, because after 20 or 30 minutes of negotiating, i can usually re-establish the connection to the sensor. But I tried just now, and it isn't working. Help??

Topic by kate1171 4 years ago  |  last reply 4 years ago


Can I use this battery at the same time when charging?

Hi, I couldn't find the answer anywhere so i'm gonna ask - is this battery usable while charging at the same time?  http://www.ebay.com/itm/Good-quality-New-DC-12V-Portable-9800mAh-Li-ion-Super-Rechargeable-Battery-Pack-/130693998479?tfrom=131459486190&tpos;=top&ttype;=price&talgo;=undefined I'm thinking about using this battery on my portable speaker with Lepai 2020A+ amp ..

Topic by Wauchy 4 years ago  |  last reply 4 years ago


"related" column acting strangely

Finding that with both Chrome and Firefox: 1. go to any Instructable 2. look at "related" 3. click "see more" 4. I get the same page with five more related 5. this is normal and desireable 1. go to any Instructable 2. click "download" 3. look at "related" 4. click "see more" 5. I get a new page of "everything" instead of the same page with five more related; the address of the new page seems always to be: https://www.instructables.com/tag/type-id/?q= 6. this started for me a week or so ago and seems very consistent (at least for me); would appreciate if someone would look at this 7. maybe this is happening to others? W7 64bit

Topic by corporatelab 4 years ago


arduino Blimp

Hey guys. I'm building an RC Blimp right now and i want to add an autonom landing feature which means the blimb has to realise when there is no more serial communication through the xbee. right now the aircraft gets 3 char-type objects. ech of these 3, for example "1=#" represents the speed for one motor. the 3 ASCII symbols get send every 0.1 seconds. any ideas how the arduino can realise that the connection is interrupted?  heres my code, thanks for helping me out:) #include #include "Wire.h" #include "SRF02.h" /*Testprogramm zur Treiberprogrammierung Team Grün*/ SRF02 srf02[2] = {   SRF02(0x70, SRF02_CENTIMETERS), //Initialisierung der beiden Ultraschallsensoren   SRF02(0x71, SRF02_CENTIMETERS), }; unsigned long nextPrint = 0; //------------------------------------------+ Servo servoLeft; // create servo object     | Servo servoRight;//                         | Servo servoYaxis;//                         | //------------------------------------------+ int motorSpeed; int verticalSpeed; int pinGreen = 8; //rgb colors int pinRed = 4; int pinBlue = 7; int ledPin = 2; int signal = 0; void setup() {   //--------------------------+   Serial.begin(9600);//     | Serial   Wire.begin();//           | Ultraschallsensor   SRF02::setInterval(100);//| Pulsintervall   //-------------------------+   //Servo Liste   servoLeft.attach(6);   servoRight.attach(5);   servoYaxis.attach(9);   char str[4] = {     '\0'  };   char command[3];   int a;   pinMode(pinGreen, OUTPUT);   pinMode(pinRed, OUTPUT);   pinMode(pinBlue, OUTPUT);   pinMode(ledPin, OUTPUT); } void loop() {   char str[4] = {     '\0'  };   int a;   int j = 0;   int mL, mR, mY;   if (Serial.available()>=3){     for (byte i=0; i<3; i++){       a = Serial.read();       if (j == 0){         mL = a;       }       if (j == 1){         mR = a;       }       if (j == 2){         mY = a;       }       j++;     }     if(mL == 181){       Serial.println("Recived Command:");     }     else{       Serial.println();       Serial.println("MotorValues:");       Serial.println(mL);       Serial.println(mR);       Serial.println(mY);       Serial.println("------------");       servoLeft.write(mL);       servoRight.write(mR);       servoYaxis.write(mY);       //---------------------------------_-:+*COLOR*+:-_-------------------------------       if(mL==90&&mR;==90&&mY;==90){         //show zeropoint         digitalWrite(pinBlue, LOW);         digitalWrite(pinRed, LOW);         digitalWrite(pinGreen, LOW);       }       if(mL         digitalWrite(pinBlue, LOW);         digitalWrite(pinRed, HIGH);         digitalWrite(pinGreen, HIGH);         }       if(mL>mR){         digitalWrite(pinGreen, LOW);         digitalWrite(pinRed, HIGH);         digitalWrite(pinBlue, HIGH);         }       if(mL==mR&&mL;!=90){         digitalWrite(pinBlue, HIGH);         digitalWrite(pinRed, LOW);         digitalWrite(pinGreen, LOW);       }       if(mY!=90){         digitalWrite(pinBlue, LOW);         digitalWrite(pinRed, LOW);         digitalWrite(pinGreen, HIGH);       }                 }   } }

Topic by willi1131 4 years ago  |  last reply 4 years ago


MP3 Bedtime Stories ..... Battery supply???

Hi, new here so please bare with me.....long story cut short. My Grandson is five years old and I thought it would be great, and get him to sleep quicker at night, if I could come up with some method of playing MP3 stories. I know, CD player, etc. nope, at five years old they want to take EVERYTHING apart. So no mains leads, CDs, etc. What I came up with was buy a simple and cheap (£2.99) MP3 player off ebay, pair it with a small battery powered speaker (£5.99) and away we go.....doh!   Both items are amazing and just right for the job BUT both are battery powered (will go flat after he falls asleep and they are left on) and two, they both have on-off switches underneath which stops me mounting them on a surface. Sorry this is going on so long....... What I thought of doing is getting a loooooooong lasting battery source (would 9v last a lot longer) and bringing ing it down to 1.5v (x2 one feed for each device). Then it wouldn't matter if they were left on overnight a few times -  or am I deluded.  Or better still, can anybody please advise?  

Topic by TN1946 4 years ago  |  last reply 4 years ago


Instructables member map

Sometimes we find a project that we’d like to actually see and touch. Other times we have resources (components, equipment, etc.) that we’d like to give away or barter for help with another project. This website is an excellent resource to build up a community of makers. Also, 5 years ago I posted a project requesting help and I haven't received any answers, yet. I think that part of the problem is that not everybody reads the forums. In many cases, when we see a project that we'd like to develop, not knowing where the maker is located dissuade us to pursue such project. I think that we need to develop a reference map showing the city or town where we are located. That way we could develop more synergy and by doing that, increase our resourcefulness and benefit all members. Don’t you think so? P.S. I’m not a computer guy, but I understand that for some of you the Google API is not a problem.

Topic by jogarcej 6 years ago  |  last reply 4 years ago


At Camp, Teens Blow Stuff Up, As They're Told

While some teens use their summers to learn sailing, archery or soccer, Brandon Meadows attends Summer Explosives Camp in Missouri to learn how to use dynamite."Some people like baseball, others like math -- I just like to set off bombs," he said. "I figure here, learning how to do it properly is better than messing around with it at home, right?"Meadows is one of 20 teenage campers enrolled in a weeklong explosion camp in the Missouri Ozarks. At the camp, high school students from as far away as Egypt and Hawaii shoot dynamite, TNT and plastic explosives.The camp's leader, Paul Worsey, a professor at the University of Missouri, Rolla, uses the camp as a way to attract new recruits into the unglamorous field of mine engineering. He recruits students to help carry on the industry, which is facing a serious personnel shortage."It's critically important," Worsey said. "These are our workers to sustain this industry going forward."So far, the camp is working. Meadows has already enrolled in the explosives engineering program at the University of Missouri at Rolla for next fall. http://www.npr.org/templates/story/story.php?storyId=11226636

Topic by ewilhelm 11 years ago  |  last reply 4 years ago


Instructables Book

We've published a book of Instructables!Order your copy of The Best of Instructables Volume 1 here!See the latest news about The Best of Instructables Volume 1 here.I just got the contract worked out with O'Reilly Media/MAKE, who is publishing the book. Details are still being finalized, but the book will look something like this: 75 (maybe?) full Instructables and 50 (maybe?) mentions (author, intro image and text maybe?) of Instructables in a community-choice section. The Instructables in the community-choice section will be chosen by a month-long contest open to Instructables published at any point in the past. The top Instructables by votes in the contest will be included. The full Instructables will be chosen by the people at Instructables, the O'Reilly and MAKE editors, and using the results of the book contest. If your project is selected, we'll ask for your permission and give you a free copy of the book. We're hoping to have it out in time for the Austin Maker Faire in October.These details are likely to change, but I'm so excited that I wanted to share them even at this early stage. We'll do a formal announcement when we know more, so consider this your sneak-preview. Updated: Number of full Instructables from 100 to 75. 2008-07-03 Update: Right now, it looks like we'll be including approximately 50 Instructables in the community choice section of the book as chosen by our Instructables Book Contest. This section will have 8-10 Instructables per page and each Instructable will have the author, title, intro text and image. Everyone mentioned will receive a free copy. As usual we'll be eliminating fraudulent votes.75 full Instructables will be included as chosen by editors at Instructables, MAKE, and O'Reilly. Obviously, we'll be watching the results of the contest closely to make sure we didn't miss anything!Since print and internet are such different mediums, part of the selection process is finding Instructables will exceptional images and well-written text. Since any Instructable can be included, now is a great time to make sure your images are top-notch and maybe add a few more, if you can. 2008-09-01 Update: If your Instructable is in the top 50 sorted by user votes, you are definitely in the community choice section. Depending on how many of those 50 are included as full Instructables in the book, the community choice section may include more Instructables. We are working hard at getting everything organized and ready for the book launch in October.

Topic by ewilhelm 10 years ago  |  last reply 4 years ago


Circuit Scribe Build Night at E4D Banjarapalya

Greetings, Just like our previous build night with circuit stickers, this build night with circuit scribes was a huge success. Many participants of our rural Banjarapalya Makerspace participated and built cool artistic projects. Although most projects were made on paper, it brought out the amazing creativity of these kids who are mostly first time learners of computer and English. Some projects: Photo sensing iron man face, blinking house, blinking E4D, Light house, Hulk face. We hope to do many more of such build nights in the months to come, introducing our village to some amazing and fun tech.  Cheers

Topic by asinha13 4 years ago


Minimalist survival kit help

I'm looking at a new prospective for a survival kit. I have an I.N.C.H. bag that i use camping. While I can pack it down to almost nothing, I dont use many of the bigger items. I was looking for ways to essentially minimize my bag. While I'm experience with the great outdoors, the minimalist aproach is a relitivly new concept to me. I want to base the kit on the ten essentials. I live in a harsh enviroment so I'd likely not be changing my shelter much. The shelter is already pretty basic.  This is my must-have gear: Map, Compass, Sunglasses, Extra clothing (a skivvy roll and what I'm wearing plus my hoody and ponchos), Illumination (Preferably no batteries), First-aid supplies, Firestarter, Matches, Knife and Extra food. My current sleep system is as follows: Medium Weather sleeping bag with compression sac, Compact collapsible cot, Goretex bivvy sac, Sleeping role and Grommeted space blanket. I'm more worried about weight than size. I will likely switch the cot for a hammock because it's pretty sizey and the metal rods make half the weight of the system. For food I was thinking keep my hobo stove and boyscout mess kit but im considering adding a hobo fishing rig. My current fishing kit is a multi function compact pole with a fly reel and spin cast reel. While very light weight it takes up some space. About 1.5'x8"x4" roughly. any ideas on additions or subtractions for the kit? I'm mostly trying to reduce weight. I'm strong but lugging around a ruck sack takes more than a simple backpack with this and that.  Any ideas are apreciated. I don't need a whole lot to live comfortably in the woods. The picture is of my I.N.C.H. bag pack in to my freighter frame. The black box is the fishing kit, the blue sac is the cot. Inside the pack is the sleeping bag bulging out. It's Probably my biggest item and in this pic is not in its compression sac as the sac was 'misplaced' while moving. I guess I'm asking for advise on downsizing the I.N.C.H. bag...

Topic by Skwurlito 4 years ago  |  last reply 4 years ago


Band, Miter, jig or scroll saw: the "goto" tool

Hi, I was wondering what people use for prepping materials to fit on small workspace spaces. I am interested in using machinable materials like acrylic, lexan, delrin, hdpe, machinable foam, polystyrene, brass and aluminum. These materials are usually easy to get in the right thickness and width, but the length could be 4'. I need to slice them down to sizes no more than 5.25" long to be used on a small cnc machine (5.5"x4.5"x1.25" build area) What do you think, or have experience with, that solves most of your needs? Thanks, Andy

Topic by AndyWilson 4 years ago  |  last reply 4 years ago


VAWT a new way to wind generation

Guys need help to realise its feasiblity and pros & cons. This project will comprise of a renewable energy source which is controlled by TI msp430 controller by closed loop system. This renewable energy source will use a magnetically levitated vertical axis wind turbine with single phase permanent magnet alternator made by our team. There will be 3 stationary wind guide vanes/flaps of concave shape on the outer periphery of turbine. These vanes will be controlled by dc gear motor for constant wind flow and protection against high speed winds. Using perturb & observe MPPT algorithm on DC-DC boost converter, constant DC voltage for GRID integration is made. A lower energy Bluetooth module will send data on user computer about whole system parameter, hence making the whole system to be smart and hence data is saved in database. https://www.youtube.com/watch?v=fC5hYLjhO9U OR YOU CAN SEE https://www.instructables.com/id/Building-a-new-type-Vertical-Axis-Wind-Turbine-VAW/

Topic by nitcool 4 years ago  |  last reply 4 years ago


VAWT a new way to wind generation

Guys need help to realise its feasiblity and pros & cons. This project will comprise of a renewable energy source which is controlled by TI msp430 controller by closed loop system. This renewable energy source will use a magnetically levitated vertical axis wind turbine with single phase permanent magnet alternator made by our team. There will be 3 stationary wind guide vanes/flaps of concave shape on the outer periphery of turbine. These vanes will be controlled by dc gear motor for constant wind flow and protection against high speed winds. Using perturb & observe MPPT algorithm on DC-DC boost converter, constant DC voltage for GRID integration is made. A lower energy Bluetooth module will send data on user computer about whole system parameter, hence making the whole system to be smart and hence data is saved in database. https://www.youtube.com/watch?v=fC5hYLjhO9U

Topic by nitcool 4 years ago  |  last reply 4 years ago


VAWT a new way to wind generation

Guys is this feasible???? i have made a 12 month long project of VAWT & new power electronics. so have a look on youtube video guys for whole project explaination. https://www.instructables.com/id/Building-a-new-type-Vertical-Axis-Wind-Turbine-VAW/ https://www.youtube.com/watch?v=fC5hYLjhO9U

Topic by nitcool 4 years ago  |  last reply 4 years ago


VERTICAL AXIS WIND TURBINE FEASIBILITY HELP

Guys need help to realise its feasiblity and pros & cons. This project will comprise of a renewable energy source which is controlled by TI msp430 controller by closed loop system. This renewable energy source will use a magnetically levitated vertical axis wind turbine with single phase permanent magnet alternator made by our team. There will be 3 stationary wind guide vanes/flaps of concave shape on the outer periphery of turbine. These vanes will be controlled by dc gear motor for constant wind flow and protection against high speed winds. Using perturb & observe MPPT algorithm on DC-DC boost converter, constant DC voltage for GRID integration is made. A lower energy Bluetooth module will send data on user computer about whole system parameter, hence making the whole system to be smart and hence data is saved in database. https://www.youtube.com/watch?v=fC5hYLjhO9U

Topic by nitcool 4 years ago  |  last reply 4 years ago


need help newbi

Ok guy's i need a little help, or to be pointed in the right direction, backround: i want to buildd a retrofit kit for a existing automatic sandblast curtain.. reason: basically every monument company in the country own's an older automatic blast curtain, that is controlled by limit switches only, and the new ones are cnc and cost 50,000 ish, and the existing machines are screeming for a retrofit kit... i own the "hirons model j" automatic curtain, it an x,y easy as pie thing, my problem is that i can get the parts machined and the rig built, however the g-code is my problem, and i think it will be very easy for someone whom can do it, to do it.. all i need is the machine to make strait passes left to right and back while slowly progressing top to bottom and back, the nozzle will also have a "spindle" motor, that will make it make a circular pattern constantly for the duration of the job, could anyone help with the g-code, ????    i can do all testing as i own the machine,

Topic by ryanH88 4 years ago


Where's the best place to buy good quality very sticky electrical tape for cheap?

Hey everybody, I was board so decided to post a tread to know where to buy good quality very sticky electrical tape for cheap... I'm kind of tired of buying hundreds of electrical  tape rolls and always ending up with the ones that does not stick well, I even tried buying a roll at $10 and it's still the same story. Do you guys experiencing the same  problem? Any recommended place to buy some?

Topic by Electrospark 4 years ago  |  last reply 4 years ago


Good Software For Planning Builds

Does anyone know any good software to help with planning builds? Any type of building type software or such, for small projects. I guess 3d modeling is probably what a lot of people use, but it seems like it has a steep learning curve from what I've seen. I was hoping maybe there is a much simpler modeling program out there for, example,  just throwing a quick box/chest together with dimensions etc. 

Topic by darrellacoustic 4 years ago  |  last reply 4 years ago


Nexus 7 (2013, Gen2, FLO) - internal micro SD mod

With games getting bigger and bigger with every new release and limited storage capacity some of you might think the same: Why not add a SD card to my Nexus 7? The lates Lollipop update basically killed the normal USB OTG funstions, so if you do want to use a USB stick or external SD card in a reader you will need a powered USB OTG cable. I am not sure if this was intentionally or another bug but it is damn annoying. After openeing my tablet to check m options I realised my main problem is space. Even adding a micro SD with a similar small reader is a major pain as there simply is no empty space left inside. So I was hoping someone here might be interested in such a mod and contribute with good ideas during the build and maybe even copy the mod (if I manage it) to confirm it is in fact doable. My findings so far: A custom rom is a must have due to the OTG limits of the original. It might be enough to just find a suitable kernel but so far I settled for the Team UB Lollipop release. It offers some mods based on Cyanogen and claims full OTG support. Other roms also added support for external WiFi and TV dongles, so there is room to play. As said space is a problem I am working on ;) For an internal mod and due to the lack of physical support on the mainboard the only option is to use the standrad USB port for this mod. This means SD, reader and OTG mod must fit inside somehow. It also means some sort of physical switch is required for the times when you need full power during the recharge - although I have to test if this still works with an external SD while the tablet is switched off. In that case I could accept 500mA charge during normal use and 1A or more when the tablet is switched off. The rom should support fast USB charge but I am not sure if this olaso works in host mode. It is possible to use some extra app and scripts to make good use of such a mod. Not only can you use the SD for music, movies and other demanding files but with scripting you can also move the big data files from games to the external storage. Works similar to the apps you can get for devices with a real SD card, where you often find the "Move to SD" option in the app manager. This mod will not be for the faint hearted as it requires serious soldering skills on these tiny components, so if you only know how to solder copper pipes you might need some training on old electronics first ;) Let me know what you think and if you would be interested in such a mod as otherwise I won't bother taking pics during the progress. And without pics there will be no Instructable follwing ;)

Topic by Downunder35m 4 years ago  |  last reply 4 years ago


melting zinc into iron

Hey guys, can you suggest me a way to melt zinc into iron? for making alloy of them... thanks

Topic by bob 1492 4 years ago  |  last reply 4 years ago


dgl-wh070l-12a lcd pin out

I have this lcd from a portable DVD player, I want to use it for my raspberry pi, I want know pin out, it has 2sets of pins, 1set has 4 pins out of which two are for backlight, 2nd set has 14 pins how ever last pin is nt used

Topic by Pranay ReddyK 4 years ago  |  last reply 4 years ago


DVI-D to VGA

Can anyone help me to make a DVI-D to VGA converter? I know that DVI-D is digital only and VGA is analog but there must be a possibility to convert digital to analog. I have a dell 30" LCD which have DVI-D port and I want to connect this LCD to VGA source. Help me plz...

Topic by raza896 4 years ago  |  last reply 4 years ago


trigger signal for video line

Hi, I'm having a project which need to send trigger signal to oscilloscope. i should make a circuit that will allow me to trigger oscilloscope on specific lines in a video signal. Please give me some idea so i can go ahead. thanks in advance

Topic by sofia14 4 years ago


Open Day at Hackerspaces in the Netherlands (and elsewhere!)

This weekend is a great time to visit your local hackerspace, especially if it's participating in the Hackerspaces Open Day. Most hackerspaces in the Netherlands will be and it's worth checking one out. More information on this here: https://hackerspaces.nl/2015/03/28-maart-2015-jaarlijkse-open-hackerspaces-dag/ (in Dutch) Our local hacker- and makerspace, Hack42 in Arnhem, will be open from 10:00 to 22:00 and we have a great programme with something for everyone: lockpicking, computer security, a fun kids activity, free books, lasercutting, 3Dprinting, and soup. All hackers, makers, tinkerers and crafters are very welcome to visit! https://hack42.nl/wiki/Open_dag (in Dutch)

Topic by Moem 4 years ago


Programming Atmega8 using arduino troubleshooting

I am making a POV (persistance of vision) project using atmega8 ,which is being programmed by arduino (uno) as ISP i am following this tutorial videos and blink led code is working well   for me as in the video, I tired the same code by changing the delay for verifying whether the circuit works properly  and i was working nice But i uploaded my persistance of vision code(POV) its no working   none of the leds is blinking I using the correct pin i verified it with arduino uno atmega8 pin mapping Here is my Persistance of vision code int _[] = {0,0,0,0,0, 0,0,0,0,0, 0,0,0,0,0}; int A[] = {0,1,1,1,1, 1,0,1,0,0, 0,1,1,1,1}; int B[] = {1,1,1,1,1, 1,0,1,0,1, 0,1,0,1,0}; int C[] = {0,1,1,1,0, 1,0,0,0,1, 1,0,0,0,1}; int D[] = {1,1,1,1,1, 1,0,0,0,1, 0,1,1,1,0}; int E[] = {1,1,1,1,1, 1,0,1,0,1, 1,0,1,0,1}; int F[] = {1,1,1,1,1, 1,0,1,0,0, 1,0,1,0,0}; int G[] = {0,1,1,1,0, 1,0,1,0,1, 0,0,1,1,0}; int H[] = {1,1,1,1,1, 0,0,1,0,0, 1,1,1,1,1}; int I[] = {0,0,0,0,1, 1,0,1,1,1, 0,0,0,0,1}; int J[] = {1,0,0,0,0, 1,0,0,0,1, 1,1,1,1,1}; int K[] = {1,1,1,1,1, 0,0,1,0,0, 0,1,0,1,1}; int L[] = {1,1,1,1,1, 0,0,0,0,1, 0,0,0,0,1}; int M[] = {1,1,1,1,1, 0,1,1,0,0, 0,1,1,1,1}; int N[] = {1,1,1,1,1, 1,0,0,0,0, 0,1,1,1,1}; int O[] = {0,1,1,1,0, 1,0,0,0,1, 0,1,1,1,0}; int P[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,0,0}; int Q[] = {0,1,1,1,1, 1,0,0,1,1, 0,1,1,1,1}; int R[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,1,1}; int S[] = {0,1,0,0,1, 1,0,1,0,1, 1,0,0,1,0}; int T[] = {1,0,0,0,0, 1,1,1,1,1, 1,0,0,0,0}; int U[] = {1,1,1,1,1, 0,0,0,0,1, 1,1,1,1,1}; int V[] = {1,1,1,1,0, 0,0,0,0,1, 1,1,1,1,0}; int W[] = {1,1,1,1,0, 0,0,1,1,0, 1,1,1,1,0}; int X[] = {1,1,0,1,1, 0,0,1,0,0, 1,1,0,1,1}; int Y[] = {1,1,0,0,0, 0,0,1,0,0, 1,1,1,1,1}; int Z[] = {1,0,0,1,1, 1,0,1,0,1, 1,1,0,0,1}; int letterSpace; int dotTime; void setup() {   // setting the ports of the leds to OUTPUT   pinMode(2, OUTPUT);   pinMode(3, OUTPUT);   pinMode(4, OUTPUT);   pinMode(5, OUTPUT);   pinMode(6, OUTPUT);   // defining the space between the letters (ms)   letterSpace = 6;   // defining the time dots appear (ms)   dotTime = 3; } void printLetter(int letter[]) {   int y;   // printing the first y row of the letter   for (y=0; y<5; y++)   {     digitalWrite(y+2, letter[y]);   }   delay(dotTime);   // printing the second y row of the letter   for (y=0; y<5; y++)   {     digitalWrite(y+2, letter[y+5]);   }   delay(dotTime);   // printing the third y row of the letter   for (y=0; y<5; y++)   {     digitalWrite(y+2, letter[y+10]);   }   delay(dotTime);   // printing the sspace between the letters   for (y=0; y<5; y++)   {     digitalWrite(y+2, 0);   }   delay(letterSpace); } void loop() {   // you can print your own text by modifing here :) printLetter(H); printLetter(E); printLetter(L); printLetter(L); printLetter(O); printLetter(_);   } Is there any solution ???

Topic by Mayoogh_Girish 4 years ago


And I was having the most fantastic day......

Really I was, I got into work, and had no real tasks to accomplish since my mentor was home sick and his boss was sick. Except she was so sick she asked me to do her job. So I got to spend 9 hours escorting 4 PE's all over to different locations. Climbing on roofs, crawling through mechanical rooms. digging things up, getting wet and dirty, all while trying to maintain a professional appearance.  I loved it!  I can't even express how much I love going to work, being an engineer is awesome. But then I got home to discover a microburst had hit our neighborhood. And was filled with anticipatory dread as I noticed the 65 foot oak in front of my house was no longer visible over the neighbors roof line. Well, the pictures below speak for themselves, there was only one way this thing could fall and NOT hit something, and it fell just that way. And if I hadn't been home late from work, my much loved truck would have been right under the trunk.

Topic by Tool Using Animal 8 years ago  |  last reply 4 years ago


Shallow depth of Field... From a tiny lens?

It is a nice effect to open up the aperture of a camera, focus on the subject, and allow the background to go blurry.  But many of today's still and video cameras have a tiny aperture. How can I get shallow depth of field from such a camera?

Topic by Toga_Dan 4 years ago  |  last reply 4 years ago


Image annotations running off of image, not displaying

Image annotations are being lost either by being below or beyond the edge if the image they relate to. This has only happened since the new image display system was implemented. The old image system allowed annotations to run below and of the side of an image, where as the new one crops the text to fit only over the image. The old image annotation system also wrapped the text after a number of characters, where as the new system allows text to run on indefinably  Users can manually insert line breaks in the annotations with the new system (not possible with the old system), however for old instructables this introduces the problem of annotations running off the image and being unreadable. This appears to be on every instructable, providing there are annotations on the images, and the annotations are long enough, or positioned such that they run past the edge, or bottom of the image. An example of this is: https://www.instructables.com/id/Cat-enclosure-with-high-cat-walktunnel-utilizes-/ On this instructable there are examples of both running of the edge of an image, and falling off the bottom. It also shows an exception to the problem, the first image allows the annotation to go beyond the boundary of the image, but all subsequent images have the issue.

Topic by RandomIdeaMan 6 years ago  |  last reply 4 years ago


where does electricity go?

I got a question. If we ground everything to the Earth for shorts and things like that, Where does that electricity go to? Does it just disappear deep down inside the earth? Does GE have an electrical well and is sucking all this electricity that people pour onto the ground? Please dont use big words like anode and cathode and coulombs (simple is better) :)

Topic by thematthatter 10 years ago  |  last reply 4 years ago


Can drawings be used in part to show a "how to" for an instructable

I designed and created "hang on back" (like many aquarium filters) rock sculptures for my aquariums.  There were so many steps and my hands a mess that after starting to take photos (to show on aquarium sites) I stopped taking many of the photos (would require a lot)... but I did take some and as well the rock sculptures in various aquariums. Is it alright to do drawings or cut and paste schematics (need to show how I cut the plastic which I can not do now where I am at - so would a drawing be alright?)   to show certain steps? Thanks for any assistance.  I would like to enter the Pet contest?

Topic by orangebettaboy 4 years ago  |  last reply 4 years ago


Ski / Snowboard Simulator/Trainer

Hi, I've always wanted to figure out a way to build my own ski/snowboard simulator to help teach my kids(and others) how to snowboard. In our  & case, give them refreshers since they know how to snowboard and they're only.  My 17yr old daughter, on the other hand, that's another story. She hates snowboarding because she can't grasp it, so this would be good for her too.  Here are some links to give you an idea of the type of simulator I am referring to: http://www.youtube.com/user/virtualsnowmthigh http://www.youtube.com/watch?v=BqXRR2pTD4U&feature;=player_embedded#at=169 http://www.youtube.com/watch?v=1ZDeyYq5pyY http://www.virtualsnowoc.com/action.html

Topic by sammyvillarreal 7 years ago  |  last reply 4 years ago


Mauser C96

Greetings, So, ever since I saw Chuunibyou, I've wanted to try my hand on a Mauser C96. Once again, it's a model, based heavily on Aug5om3's version. I built his one, then changed the handle, trigger and shortened the barrel a bit. The handle is a bit less sturdy than I like, but it looks pretty IMO, though the front of it could use some more curving. It features: - a comfortable handle - charging handle - moving hammer - pretty good looks I'm not entirely happy with it, but as I have plans for other builds, I decided to take some photos to share, and then take it apart. Posted it as a forum topic, as it isn't original enough to warrant a full slideshow. Tell me what you think in the comments!

Topic by dr. richtofen 4 years ago  |  last reply 4 years ago