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ERROR 500: java.lang.RuntimeException:(what is this?)

Im not sure if this belongs here but when i tried to delete a comment it saidERROR 500: java.lang.RuntimeException: none of the thingId values was set, don't know what to add the comment TOExceptionjava.lang.RuntimeException: none of the thingId values was set, don't know what to add the comment TO at com.instructables.webapp.comment.CommentForm.load(CommentForm.java:148) at com.instructables.servlet.ActionServlet.fillFormBean(ActionServlet.java:282) at com.instructables.servlet.ActionServlet.process(ActionServlet.java:270) at com.instructables.servlet.ActionServlet.doPost(ActionServlet.java:137) at com.instructables.webapp.edit.EditServlet.doPost(EditServlet.java:201) at javax.servlet.http.HttpServlet.service(HttpServlet.java:154) at javax.servlet.http.HttpServlet.service(HttpServlet.java:92) at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:106) at com.instructables.filter.SecurityFilter.doFilter(SecurityFilter.java:164) at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70) at com.instructables.filter.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:70) at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70) at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:173) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229) at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:274) at com.caucho.server.port.TcpConnection.run(TcpConnection.java:511) at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:520) at com.caucho.util.ThreadPool.run(ThreadPool.java:442) at java.lang.Thread.run(Thread.java:619)what is going on?and i'm sorry if i shouldn't have created this topic

Topic by ReCreate    |  last reply


How do you read crease patterns?

Recently,  I saw a website by Robert J. Lang.  I really like origami,  so I looked up some of his diagrams, and, guess what?  They were all a bunch of crease patterns.  Right now those are pretty dang useless to me.  I was reading some of the entries to the site and i saw this: "A reasonable number of people now have the skill to “read” a crease pattern and fold the encoded form."  The second I saw that, I thought, "Are you mocking me?"   So, in other words, how do you "read" CP's as the great (just kidding) Robert J. Lang said?

Question by eulaliaaaa!    |  last reply


I deleted some instructables, but they are still showing up in the non-english sites.

Hi, I deleted several instructables because of safety concerns  and you can see that they are indeed gone    https://www.instructables.com/id/FOOT-WARMER/    https://www.instructables.com/id/FOOT-WARMER-1/    https://www.instructables.com/id/DEEP-WARMTH-FOOT-WARMER/    https://www.instructables.com/id/Cozy-Hand-Warmers-and-Foot-Warmers-from-8oz-Plasti/ but they are still showing up in goolge search as being on non-us instructables sites where the can be found here for several language versions (there may be more links also)    https://www.instructables.com/id/FOOT-WARMER/all/?lang=de    https://www.instructables.com/id/FOOT-WARMER-1/all/?lang=de    https://www.instructables.com/id/FOOT-WARMER-1/all/?lang=zh    https://www.instructables.com/id/DEEP-WARMTH-FOOT-WARMER/all/?lang=de    https://www.instructables.com/id/Cozy-Hand-Warmers-and-Foot-Warmers-from-8oz-Plasti/all/?lang=de      I can't log into the non-english sites. How can I get the 4 deleted instructables at the top of this message restored so I can modify them and/or delete them on all instructables servers (english, german, portuguese, spanish, chinese, japanese)? Thank you moi

Topic by MemberOFinstructables    |  last reply


Deleted instructables still show up on non-English instructables sites

Hi, I deleted several instructables because of safety concerns and you can see that they are indeed gone    https://www.instructables.com/id/FOOT-WARMER/    https://www.instructables.com/id/FOOT-WARMER-1/    https://www.instructables.com/id/DEEP-WARMTH-FOOT-WARMER/    https://www.instructables.com/id/Cozy-Hand-Warmers-and-Foot-Warmers-from-8oz-Plasti/ but they are still showing up in goolge search as being on non-us instructables sites where the can be found here for several language versions (there may be more links also)    https://www.instructables.com/id/FOOT-WARMER/all/?lang=de    https://www.instructables.com/id/FOOT-WARMER-1/all/?lang=de    https://www.instructables.com/id/FOOT-WARMER-1/all/?lang=zh    https://www.instructables.com/id/DEEP-WARMTH-FOOT-WARMER/all/?lang=de    https://www.instructables.com/id/Cozy-Hand-Warmers-and-Foot-Warmers-from-8oz-Plasti/all/?lang=de     I can't log into the non-english instructables.com sites. How can I get the 4 deleted instructables at the top of this message restored so I can modify them and/or delete them on all instructables servers (english, german, portuguese, spanish, chinese, japanese)? Thank you moi

Topic by MemberOFinstructables  


Laser Cutter Origami

The New Yorker printed an article about engineer/physicist turned professional origami artist Robert Lang. He's dropped by Instructables/Squid Labs to use the laser cutter to score curves otherwise impossible to fold; it's some neat stuff. This spawned a comment thread on using origami techniques to mold concrete for the Universal Nut Sheller. (Scroll up one comment for first post in the thread.)I don't know how long the article will be available, so here's the laser cutter's cameo:One clear, chilly day not long ago, I met Lang at Squid Labs, a high-tech research-and-development company headquartered in an enormous concrete building that used to be part of the Alameda Naval Air Station, near Oakland. Lang and his wife and their teen-age son live about twenty miles east of Oakland, in a comfortable ranch-style house that has a separate studio building in the back yard, where Lang works amid a clutter of math books, seashell guides, computers, and a menagerie of paper animals. He was spending the day at Squid Labs to use its industrial laser cutter to help him crease paper for some complex folds. He said that he may be the first origami artist to use a laser cutter, which he dials down to a smidgen of its power, so that it scores the paper rather than slices it. Lang was working on paper prototypes for two commissions: one for an interior-design piece to be made of metal, another for a leather fashion accessory, and on a design he was making for himself, which he didn't want to describe, in case he jinxed it. All three of the designs were so intricate that it would have taken him hours just to crease the paper in preparation for the final folds. He was using large squares of tweedy-looking mauve Hanji paper from Korea, which is sturdy but still slightly translucent, like the flesh of a fish.

Topic by canida    |  last reply


fischertechnik Model Show - NL

Howdy All, Nice slideshow of projects shown at the ftClub NL meeting ( Hoofddorf 13/03/2010,)  http://www.fischertechnikclub.nl/index.php?option=com_rsgallery2&page;=slideshow&gid;=27&Itemid;=58⟨=de Thought to share. Richard

Topic by ftking_83702    |  last reply


Malmo says no to ridiculous car trips

Over at Grist.org Sarah Goodyear writes about an interesting approach to encouraging motorists to leave their cars at home. Malmö says no ridiculous car trips. Watch the video and read the full article here. No ridiculous car trips from Martin Lang on Vimeo.

Topic by Culturespy  


which language have to use for project on android mobile os which application to choose?

Im in final year of IT engg n i want to do project n Android mopbile os i want some guidance about which lang to use n which app to choose please help me.....

Question by santosh walsetwar    |  last reply


Barbie Tit Necklace

Ha, got yer attention with that subject didn't I?But it's true. Check out Margeaux Lange's site for more pictures. These are strangely gorgeous...Clearly she's got the jewelry-making skills to do a top-notch job but I think someone with as much imagination but less metalworking skill could do a reasonable imitation.

Topic by rachel    |  last reply


Jewelry - Salvaged Barbie Doll Parts

This is one of the more unique re-purposed jewelry ideas that I have seen.  At first I thought the faces and body parts were photos or maybe paintings.   However, the interesting and comical compositions are created using Barbie parts! The Plastic Body Series designed by Margaux Lange is a jewelry line that combines salvaged Barbie doll parts with sterling silver and pigmented resins. You actually HAVE to check out this link; I am so amused by this!

Topic by Carleyy    |  last reply


12v footswitch help.

432-1212 from digi key.  http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go⟨=en&site;=us&keywords;=432-1212&x;=16&y;=22 Can this be wired up to work with a 12v battery. I'm wanting to wire this between my battery and bilge pump for a on and off switch it probably will get wet or I should say soaked.  I couldn't find any cheap footswitchs online so I'm thinking maybe I could make one?

Question by micha3l87    |  last reply


Experience Other Dimensions

Has anyone ever experienced the fourth dimension. Sure this is a topic for science fiction novels, new age conspiracy theories and the new Indiana Jones movie. But dimensions past our own experience are having a big impact in theoretical physics. Flat Land and it's unofficial sequel Flatterland are good books to get a mathematical yet whimsical look into alternative dimensions. The Tesseract from A Wrinkle in Time was a hyper cube as well.So we go from 0D (a point) to 1D (a line) to 2D (planes) to 3D (solid objects) and then what happens when you pull that plane into an unseen dimension? Well, use your imagination and watch this video: 6d-Hypercube from Tobby Lang on Vimeo.Why Bother With 4D?Yours_BG*(Corrected, thanks n8mansays)

Topic by lamedust    |  last reply


List Of Songs in Common Meter: Please Comment To Add Other Songs

These are "8686", songs, eigh syllables in first line, six in the nexts, then eight... God rest Ye Merry Gentleman O God Our Help In Ages Past Amazing Grace Yankee Doodle America the Beautiful Brighton Camp The Marine Hymn O Susannah The Happy Wanderer (verses) The Alpha Phi Omega toast song I've been Working on the Railroad Amazing Grace Giligan's Island Greensleeves House of the Rising Sun Oh Little Town of Bethlehem The Yellow Rose of Texas Joy to the World Auld Lang Syne Beverly Hillbillies Theme Ghost Riders in the Sky Stairway to Heaven The Rime of the Ancient Mariner It Came Upon a Midnight Clear Navy Hymn ( Eternal Father) Angels We Have heard On High Down By The Riverside

Topic by Wilmette    |  last reply


International CYNETART competition

Call for Entries for the 14th Festival of computer-based art CYNETART || entry deadline 28.02.2010 TMA Hellerau hosts this international competition of CYNETART, inviting artists and art groups to present their projects, every two years. They can apply with projects that fully utilise digital technologies in their conceptual, creative and performing processes, thereby opening up opportunities for digital performance and their relationship to factors such as time, space, physical presence and social encounters. An international jury with representatives from well-established media culture institutions and experienced scientists with a background in media art history will decide about the winner of the CYNETART-award and the sponsorship award. It will also decide on the award of the artist-in-residence-grant funded by the Saxon Ministry of Science and the Fine Arts. Further information/ Entry Form: http://t-m-a.de/cynetart/wettbewerb?lang=en  

Topic by TMA Hellerau    |  last reply


2010 fischertechnik FanClub Day (Tumlingen Germany)

WHAT: fischertechnik FanClub Day! The fischertechnik FanClub Day will be in Tumlingen Germany. WHEN: Sunday July 4th. 2010 10:00 -16:00 WHERE: fischer Hauptwerk Weinhalde 14 - 18 72178 Waldachtal-Tumlingen WHO: All fischertechnik fans! WHY: If you are interested in where fischertechnik is produced, this is the event to attend. Last year, visitors could look at the new building kits; show their own models; receive information on the ft storehouse; look where the ft kits are being assembled; assemble a kit of your own and buy discounted ft kits.   And for an awesome time, of course! Tumlingen is a beautiful place and well worth the visit. WEBSITE: http://www.fischertechnikclub.nl/index.php?option=com_content&view;=article&id;=274%3Afanclub-dag-in-tumlingen-d&catid;=13%3Aagenda&Itemid;=57⟨=en  

Topic by ftking_83702    |  last reply


An structable that imitates and improves Wacom's Inkling

Hello all! Just surfing the web for some drawingtablets, that is where I found (duh! d'oh)Wacom Inkling http://www.wacom.eu/index2.asp?lang=en&pid;=9226&gm;=3 It looks cool, but: * I wonder if Wacom is "more compatible" with products they sell, in other words, buy Inkling buy other Wacom related products to make it compatible with each other. *Pen, pressure sensitive, but can you swap the inkleader with any you like? Especially(correct?) (I'm Dutch ;) ) the pen. When the ink has dried up, you don't want to buy another Wacom pen which takes ages to ship. It doesn't seem that hard to recreate something similar without my assumptive drawbacks. But is there a whizzkid that would like to make and instructable like this? Please? :) Regards Thomas

Topic by TT2    |  last reply


Food Creator and dispensor

This project is currently in the research stage. Having been reading the books 'Zero to Maker' by David Lang (OpenROV) and 'The Toaster Project' by Thomas Thwaites I have realised what I need is a project with a goal to take me out of the Arduino blinky light and solder kit zone, in to real making/hacking. Lang suggests an 'Unknown Project' which as I understand it is one that has been unexplored or under-explored, and he also suggests that using a popular forum to log, share and discus ideas would help the process along. So my idea, is an open hardware food creating machine, that will produce a large array of food, from a limited array of ingredients (approx 50) that can be made easily, and a ingredient markup language. 3d food printers in current development are either impractical or unappealing to me. They range from candy makers, ones that still need to be hand finished and cooked or the one publicised for receiving NASA funding recently used dead bugs. They seem all to focus on the gimmick, and not the food, and I like food. The other approach is the barbots, which seem to mostly perform flawlessly, but are unable to produce food. So my approach is to work through the process logically and break it down to sub projects. Design meals by hand using the limited ingredients for proof of concept, choose the ingredients to provide the widest possible range of nutrients and transpose the recipies to psudocode that can be easilly transformed in to a markup language later. Design a process for mixing and cooking ingredients. I envision a system of different food processors, steamers, boilers etc. and a range of extruding dies. Design a self cleaning system. Possibly ultrasonic or ionic. To that end, here is my preliminary list of ingredients. sugar, salt, oil, water, co2,Alcohol 37.5%,pectin,bicarb,nutritional yeast coffee,tea,mint,cocoa,garlic,oregano,chilli powder, paprika rice,soya,corn,wheat lemon extract,orange extract,tomato powder,dried apple,dried carrots,dried peas,potato powder. These ingredients can be used to make among other things, sausages, burgers, curry's, pasta, fries, soups, cereals, 'cider', cocktails, deserts, sodas, sauces, egg cheese and milk substitutes. So that's my plan. What do you guy think, and what ingredients would you add and why? And what would you call it? There are loads of things I left out as everything will change as I work through the process. Thanks for reading, Haydn

Topic by HaydnJones    |  last reply


WTV020M01 sound module need help

Hi I recently bought a cheap WTV020M01 (WTV020SD) sound module from china. i know you get what you pay for but i cant really afford to spend big on that kind of electronics or else i would have. Any ways my problems is i have wired up the component as instructed, loaded up the audio files as per instruction on the micro SD card and connected it to power and hit the play pin. And NOTHING happened. i then tested to see if it was getting power and yes the power was fine. After being frustrated i tried moving around the power connector and discovered that if i placed the power in the reset pin the module lit up as if it was working and all the buttons worked but still no sound. i am not sure that as its a cheap component its a dud or have i just wired it up up wrong, or an i missing something like an amp. any help would be good thanks. here is some links to the component specs http://www.datasheetq.com/view.jsp?pn=WTV020M01&fac;=ETC⟨=en

Topic by solarsun    |  last reply


Arduino Sensor That Senses Humans/Animals Via Temprature?

Hi! I'm looking for a sensor that is similar to this one http://www.robotshop.com/phidgets-motion-sensor-1.html but that can be used with the Arduino.   I'm really new at this... so the less complicated, the better. I've got this sensor up and working:  http://www.robotshop.com/productinfo.aspx?pc=RB-Dem-02&lang;=en-US but it can sense other objects (in my case, moving fabric) which will screw up what I'm doing. Right.  What I'm doing.   I'm making a giant Nylon inflatable piece that is run by constant air flow.  My goal:  when a person walks into this inflatable structure and encounters the sensor hanging in the center of the structure, the fan that is inflating the piece turns off.  When the person walks out of the sensor's range, the fan turns back on.   The setup that I currently have is attached. The code I am using is:   int analogPin=A0; int analogValue=0; void setup() {   Serial.begin(9600);   pinMode(12, OUTPUT); } void loop() {   analogValue = analogRead(analogPin);   Serial.println(analogValue);     if (analogValue > 250){      delay(3000);  //wait 3 seconds...     digitalWrite(12, LOW);  //turn fan off   } else if (analogValue <249){      delay(1000); //wait 1 second...     digitalWrite(12, HIGH);  //turn fan on }

Question by granule    |  last reply


A Level choices

 I'm not after anything in particular here just want some opinions. After recently applying to my local sixth form college I'm curious as to...well I just want to talk really. My options are: 1.Chemistry 2.Physics 3.Mathematics 4.DT: Product design - Materials Reserve:Computing GCSE: P= predicted grade, C = current grade (Or already gained GCSE), L/10 = how much I enjoy, G/10 = how capable I am. Maths: P= A*, C=V. high A, L8/10, G7/10 Physics: P=A*, C=A*, L9/10, G9/10 ICT: P=D(distinction), C=D, L7/10, G10/10 BPE: P=A*, C=A/A*, L6/10, G8/10 Chemistry: P=A*, C=A*, L9/10, G9/10 DT (Electronics):P=A*, C=A*, L9/10, G9/10 Catering: P=A*, C=A, L5/10, G8/10 Music: P=A/A* , C=B/A, L5/10, G7/10 Biology: P=A/A*, C=A/A*, L8/10, G7/10 English Lit.: P=A*, C=A, L6/10, G6/10 English Lang.: P=A/A*, C= B/A, L6/10, G6/10 PE: No GCSE Anyone else recently applied for sixth form? Currently at sixth form college or university? Any advice? I reckon I am going to end up (sounds so negative) in Engineering or Science, whether I choose University or an apprenticeship etc. ANY advice appreciated.

Topic by DELETED_zoltzerino  


Create door opening wireless notifier? Reed switches? Answered

Hi, I have a Vellerman K8055 USB experimental board that I have hooked up to one of my machines. Yesterday, I took our wireless doorbell apart and with a multimeter found the signal that sparks the 'ding-dong' sound when the remote bell is pressed. I wired that into the K8055 and then to cut a long story short, when the bell is pressed, it pops up on my TV and tells me that someone has pressed the bell (using MythTVOSD multicast if anyone is interested). A link to the card: http://www.velleman.eu/products/view/?country=be&lang;=en&id;=351346 What I'd like to do is to extend this mechanism to my doors. When a door is opened in the house, then I need a signal to be sent to a receiver device also wired into the K8055 so that I can capture that event in my program. I have thought about using magnetic reed switches on each door with hacked wireless doorbells (around 3-5 GBP on ebay from China). One problem I have is that I can only find 'normally open' reed switches, meaning that when the door is closed so will the reed switch contacts - this in turn means that I will be constantly notified (should I be able to make this work) that the door is closed. If I could find 'normally closed' reed switches, I could have one of each on each door, What is the cheapest/most elegant solution to this problem? Is using hacked wireless doorbells the way to go, or is there a better way. I'm a relative novice with electronics - I'm a dot net developer by day with experience of data capture cards, and have toyed with the Arduino, Lm386s, 555s, 4017s etc... some with instructions from this site, so whilst not a complete beginner, I am what I would call, "an enthusiastic amateur'.

Question by dchurch24    |  last reply


Crowdfunding

We love seeing our authors transform their ideas into a reality, and we want to help in whatever ways we can. Below are some of the campaigns our authors are working to get funded. We'll do our best to keep this list current, so please check out their projects, and help fellow makers in our community find success!  Current Campaigns i-mimic the animation made easy, Device capturing human motion directly in 3D animation software in real-time & without plugins. by Instructabler nawres102 Open Source DIY Automatic Tail Light, A fun and easy to assemble light sensor kit.  By Instructabler Solarcycle Tiq probe, it defines a new category of electronic debug & test tools for makers & professionals - filling the gap between DMMs & 'scopes. By Instructabler markhen57 If you have a project you're trying to get funded, let us know!  Completed Campaigns  Doughnut Safe, Turn your spare tire into a strong box.  By Instructabler Mrballeng The fumeFan, The fume Fan is a soldering fume extractor, work lamp, helping hands tool and a project organiser for hobbyists, makers and creators.  By Instructabler hertzgamma SOLARPAD Open Source 5 Watt Smart Phone Solar USB Charger, Strap this water-resistant solar panel and battery to backpacks or mount it to tripods for camping, hiking, and cycling.  By Instructabler Solarcycle Fish Bone, A no knots cord tightener specifically designed for paracord by author Mrballeng - Funded by almost 9000% of goal! Would you Woodwork, a funny and informational woodworking webseries by author Few Bits - Funded by 100% of goal!  Zero to Maker, a re-skilling guide for new makers by David Lang - Funded by almost 2000% of goal! Arabic Alphabet Fun Flashcards, cute and kid friendly learning tool by author acraftyarab - Funded and met goal! PIXEL: Interactive LED Art, an interactive LED-based display for retro pixel art by author alinke - Funded by over 600% of goal! Blinky Fish, a tiny fish-shaped board that fits on an Arduino to help teach, by author marc.cryan - Funded by almost 600% of goal! Chipper, the ATtiny Programming and Prototyping Shield, by author Hammock Boy - funded by over 1000% of goal! Piranha, a follow-up knotless gear tie for paracord, by author Mrballeng - funded by over 1400% of goal! The Question Block Lamp, a Mario-inspired, interactive lamp for your inner geek, gamer and child, by author bduxbury - funded by almost 150% of goal! Out of Time - A patina weathered I-Beam with moving gears by Instructabler hack818 Maker Kase - Universal Maker cabinet. Perfect for 3D printers, model makers, small CNC machines and open frame Bitcoin Miners by Instructabler bmc.loughlin Have you started your own Kickstarter or Indiegogo to help fund your project? Let us know! Please leave the link in the comments, along with a brief description. We'll add your project to our up-to-date campaign list above, and promote it across our channels. If you have any questions, or want to add any additional info, please email me at khoward@instructables.com Thanks!

Topic by kazmataz    |  last reply


"Re-inventing The Wheel"

Say hello to Mr.T.  He is old, simple, and there is really nothing special about him.  However, Mr.T is a sneaky little feller.  He likes putting on clever disguises like iron sights and stocks and even removable magazines to make people think that he is special.  But he isn't.  He's been around for years now, and for some reason, can't accept that his time is done.  As a community, we are going to get rid of Mr.T. I hope you found that funny, but more importantly, I hope that you took it seriously.  No, I am not talking about the guy who played Clubber Lang in the third rocky.  I am talking about the K'nex gun that has been built and posted thousands of times, and makes the rest of the Instructables community hate K'nex gun builders.  At this point, pretty much any search done on this site will result in at least one K'nex gun.  What is worse?  They are all the same.  The "T" format is the most simple, most redundant approach to building a K'nex aside from the now heavily discriminated block trigger guns.  They involve three things: 1.  A vertical magazine 2.  A firing ram 3.  A trigger Any gun that requires only these three components to operate is, in my opinion, pointless.  Despite cosmetic features such as stocks and iron sights, all "T" format guns are exactly the same.  Yes, they do work, and some of them even work very well, but at this point, improvement will only occur with change, not with repetition.    Compared to a few years ago, this K'nex community is dwindling on the edge of a cliff.  Many people have lost interest because nothing new was being made, so they just quit.  I do not support this decision, but I cannot blame them either.  Like many of the other "veterans" on this site, I have been on and off, but have never officially quit.  Sometimes one just needs to think.   Hopefully by now, I have made it clear: not another Mr.T should be posted ever again.  They are great guns for those learning the ropes.  That is about it.  There are so many other options out there.  Horizontal magazines, pump systems, lever systems, bolt systems, and so many more.  Make up your own system!  Combine different systems!  There are millions, maybe billions of different ways to put a thousand K'nex together, so why limit yourself.  You are all builders, which means that you see things in your head before you make it.  But sometimes these ideas come to us in inopportune times, so what do you do?  Write it down.  Even if your drawing skills are as pathetic as mine, just scribble it out so you can make sense of it, and then refine it later with a ruler.  Then get to work on it. So, here are the steps you can take to advance this community: 1.  Stop posting Mr.T!!!  He can be a good teacher, but that is about all. 2.  Be different!  My goal when I entered this community was to make guns that nobody has ever made.  No two of my guns are similar, nor are my guns like any others out there.  You have millions of options.  Make use of them! 3.  If you have an idea, write it down!  Even if it seems absurd, I guarantee that it, even if it only be small parts of it, will improve your building skill. I really hope this has made you want to make something different. Not much more I can say.  Just go do it. Oblivitus and TheDunkis have started building a database of different gun elements and different ways of approaching them.  Check it out and feel free to contribute!   http://knexbuilding.wikispaces.com/ 

Topic by Kinetic    |  last reply


how to stop a bully (11 - 12 year old? Answered

Hi this is kaden and i have a problem with getting bullied at school below is an email that i sent  to my school counselor This is in place of spending my day talking to you be because i would rather type it than talk or write it so here it goes. last year carter moved to oak lawn from wakanda and he keep saying things to me like kadens a big baby kadens a big baby or kadens stupid and stuff like that. i would try to tell teachers this but they wouldn't listen or if they did listen they did nothing but give me lunch detention and a major. i am not going to lie but obviously i responded to all of this in not the best way i could of but he just kept following me around and making faces calling  me names  and it got on my nerves. but that was last year but this year he has resorted to physical violence such as use my head as a personal whack-a-mo game or my body as target practice with sticks and stones but also mentally such as lying to the teachers or following me around making faces at me and stuff like that. the worst part i can't defend myself against lunchboxes because then i am the one who gets in trouble but if i let him just hit me and hurt me then neither of us gets in trouble which me and my parents think is just wrong. this next section is just other things that bother me this year… Lucas well he has a history of calling me names too like toothpick and weakling and the thing that sticks out about him was at the end of last year we made tape sculptures and he STOLE my scissors he BROKE my scissors and then he turned my scissors and a glass bottle in to a LETHAL WEAPON and chased me with it and the worst part the teachers did NOTHING he could'would've killed me if he wanted to. but then this year i walk in the bathroom at lunch he calls me weird annoying pushes me against the wall all before i even have the chance to walk away. that fixed my problem for the most part then a moth later it all started again and now a week ago i had a boy with down syndrome kiss me but that's was fixed. then that morning lucas came in my homeroom and called me those names and there were two teachers standing there that did nothing then i was having a bad day after that because i had a sub in lang arts (when theirs a sub its chaos) then i found out that carter started having science the period before me so he was always the last one out and he would always call me names or stomp on my foot (I recently found out that in elementary carter was biting my best friend on the leg) then i had lunch whop hew but then there's Jenny (jenny is a lying girl that thinks shes better than everyone else) and so i told her that library was closed for the day (they had a meeting so kids couldn't use the computers) and then she took out an arrow head and had it in the palm of her hand then she took her thumb and pointer finger and squeezed the side of my neck with the arrow head in hand and she left major marks that went away by the time the teacher saw them the next day but since my neck and face were all red (not from blood) and in tears every one kept asking me whats wrong (funny how the people that always ignore you seem all sympathetic for you if your hurt) so i just pointed to my neck and they just said oh wow then two periods later in band another girl did the same thing as jenny minus the arrow head  now that i have gotten that off my chest hears some more info about this situation i have talked to the school counselor whatever he does it only worked on one kid chance (he is to minor for this story) every body else i don't think he does any thing about principle all he does is listen and and nothing else i have talked to my parents and they email the teachers so no outcome any help and please no troll answers thanks, Kaden

Question by theawesomekid    |  last reply


Digital Open: An Innovation Expo for Global Youth

IFTF, Sun, and Boing Boing just launched Digital Open, and I'm proud to share that I'm helping judge entries."What can you make with technology that will change the world, make the future -- or even just make life a little easier or more fun?"Institute for the Future, in partnership with Sun Microsystems and Boing Boing, invite youth worldwide, age 17 and under, to join us as we explore the frontiers of free and open innovation. Running from April 15 until August 15, 2009, the Digital Open: An Innovation Expo for Global Youth will accept text, photos, and videos documenting projects at DigitalOpen.org from young people around the world, all licensed under one from a list of free and open software licenses.Youth can submit projects in a variety of areas, ranging from the environment, media, and community, to the more traditional open source domains of software and hardware. Additionally, the Digital Open will provide resources and links to help them learn more about free and open technology movements, from figures like Richard Stallman to organizations like Creative Commons."As a company that engages schools, teachers and students from around the world to discover the transformative power of open technology, we jumped at the opportunity to work with the Institute for the Future to conceive and create The Digital Open," said Linda Rogers, Sun Microsystems' Director of Global Communities. "From Buenos Aries to Beijing to Budapest, we know that global youth are capable of spurring remarkable creativity and innovation. The Digital Open will be a window for the world to be impressed and optimistic about what the next generation will bring."Marina Gorbis, Executive Director of the Institute for the Future emphasized the participatory nature of the project. "The Digital Open is more than just a competition," she says. "It's about recognizing and encouraging kids to follow their passions while giving them community experiences that further encourage or challenge their best thinking."As an online, open source interpretation of the traditional high school science fair or world expo, the project's social networking-driven website encourages collaboration, communication, and sharing ideas. On DigitalOpen.org, youth can converse with each other about their projects, submit entries together, and win a series of achievement badges that they can repost on their own blogs and websites.The top project in each of our eight categories will be selected by our panel of approximately 20 judges, includes David-Michel Davies, Executive Director of the Webby Awards; Lawrence Lessig, Harvard/Creative Commons; David Pescovitz, Boing Boing; and Dale Dougherty, publisher of Make.To give the talented young innovators public exposure beyond the Digital Open, Boing Boing, a culture and technology blog with millions of readers, will feature each winner in his or her own video for the site. All of us at Boing Boing Video are excited about the opportunity to cultivate youth innovation in open technology," says Xeni Jardin, Boing Boing Video Host and Executive Producer. "We hope that young makers will use the Digital Open to really show off their work--and to connect with like-minded digital explorers around the world."The winning young innovators will also receive a technology prize package including a PeeCee mini laptop running the OpenSolaris operating system, a video camera, a solar-powered flashlight, and other assorted goodies.Forty years ago, IFTF's founders imagined a world in which it would be possible to improve human lives and build better organizations by thinking systematically about the future. These were visionaries saw the power of using computers and networks to build collective intelligence. Harnessing the intelligence of large groups of experts to develop forecasts, using new open-source tools take forecasting to the next level--engaging vastly larger groups of experts and non-experts in immersive experiences that allow us to envision multitudes of future possibilities in a dynamic and continuous way. DigitalOpen.org is the third open, collaborative platform that IFTF has launched this year where the public can participate in imagining and inventing the future, and the first specifically targeting youth--the true future of innovation.Find out more at digitalopen.org.Digital Open Judges:Lawrence Lessig, Creative Commons, Stanford Law SchoolDavid-Michel Davies, Webby Awards, International Academy of Digital Arts & SciencesDale Dougherty, O'Reilly Media, MAKEBilly Bicket, TechSoup/NetSquaredSimon Dingle, Finweek MagazinePatricia Lange, USC Institute for Multimedia LiteracyEric Wilhelm, InstructablesXeni Jardin, Boing BoingDavid Pescovitz, Boing Boing/IFTFKati London, Botanicalls & Area/CodeThe Playtime Anti-Boredom SocietyNick Bilton, New York Times/NYC ResistorJane McGonigal, IFTFJessica Mah, IntershipIN.comHeather Ford, Africa CommonsIsaac Mao, CNBlog.org, United Capital Investment, Global Voices OnlineColin Bulthaup, PotencoOona Castro, Overmundo InstituteElizabeth Stark, Yale Information Society Project, Students for Free CultureAhrash Bissel, Creative Commons, ccLearnPhoebe Ayers, Author: How Wikipedia WorksKiruba Shankar, Knowledge FoundationLinda Rogers, Sun Microsystems, Inc.

Topic by ewilhelm    |  last reply


Long Range Off the Grid WiFi Repeater

Hello Everyone,  I've got quite the project that I am undertaking and I am looking for a bit of advice. This will be my very 1st forray into long-distance wifi, as well as off-grid power resources, so Im biting off quite a bit at once! I have a friend who has been helping me with the research who has a much firmer understanding of both electricity and hardware, but he will be out of town for the next week and I would like to get a bit of progress on this while he is gone. SO, I shall consult the hive mind known as the internet. Alright, this project consists of creating an uplink between a remote shed, and a home in a nearby city, with a broadband connection. The rub, there is 10,000 ft mountain range in between the two. We have a site were we can put a repeater node at approx. 10,000 ft elevation, that has wonderful line-of-sight to both locations. However, this site is very remote, and will have to run off the grid obviously. The distances are as follows: Home to repeater: 3.96 miles (thats with Google Earth following the contours of the          mountain/valley, not sure how to make it just do a straight angled shot, so thats a rough estimate) Repeater to Remote shed: 2.68 miles (same issue) Background environment info: shed has generator + 60w solar array with 3-4 deep discharge lead RV batteries at 7400 feet. Has spring fed running water, which could be utilized for power as well, as obviously its always running. Repeater location is at 10k, as stated. Moderate to high winds very likely (data from peaks of similar altitude in the general area show gusts ranging from 40-60 mp/h, temperature ranges of  averaging 7 to 90+ for a the later part of July and August (F). Obviously, its very possible to get soemething below this, though the lowest Ive ever seen at the shed has been -15 (f), I would say most winters we could get a few nights that see temps below 0, but not often. Equipment Ideas: So to pull this off, we have come up with two ideas for the network equipment, which I shall discuss 1st, then I will show you what we have come up with for power.  - Network    - Repeater Node: rb433 wireless access point ($99.00) http://www.routerboard.com/pricelist.php?showProduct=43         with 2 r52h mini PCI wifi chips ($59.00 x2) http://www.routerboard.com/pricelist.php?showProduct=69         2 8-18 inch satelite dishs converted for long-range WIFI use (20.00 x2) http://www.engadget.com/2005/11/15/how-to-build-a-wifi-biquad-dish-antenna/ OR instead of a rb433, we could use 2 WRT54G Linksys routers like this. (I also have 2 BEF 801.11b routers that are legacy to the WRT54G. I would like to use this if possible! http://hackaday.com/2005/08/23/how-to-greyhat-wifi-repeater/ Now, I know that this later choice would increase power use by about double. From what I have been able to find, the WRT's would at anywhere from 4.2w to 8w of power. Anyways, I like this later choice because it would be significantly cheaper for the equipment, but do you have any other ideas? I know that the RB433 would work great, but its rather expensive all said and done after I throw up the power as well. Plus, if it takes a lighting strike, its out of commission, and 2 cheap linksys routers are much cheaper to replace! Anyways any input here would be great! - Power  so power to the repeater node is the real challenge. We crunched the numbers and came up with something almost exactly the same as below: From the datasheets, a routerboard will draw between 6-10W. So design for 10W. Over 24 hours you will need 10Wx24h = 240 Watt.Hours of power. For 7 days, you need 7x240Wh = 1680 Watt.Hours. A single, large deep cycle 110Ah 12V battery gives you about 1320 Watt.Hours of power, almost meeting the requirement. Now, to look at the solar panels: A good rule of thumb is to install 6 times the wattage that is drawn by the device. This is because only about 8 hours a day in sunny weather gives you maximum power output from a solar panel. So the other 16 hours you need to draw from the battery. (So already you need 3 times the wattage drawn by the device to break even each day) To generate 1 full day of extra battery power per sunny day, you need another 3 times the wattage. This is how we arrive at 6 times. 6 x 10W = 60W. So at a minimum I would recommend 60W of solar panels. That qoute comes from http://diywifilink.wordpress.com/ and http://mybroadband.co.za/vb/showthread.php?179547-Advice-needed-Setting-up-wifi-repeater-11km which is a project from a guy in South Africa almost exactly the same as the one that we are working on. The numbers came out to be about the same (Though they were a bit different when we calculated for the WRT54G option.) so, 60w of power generation to keep a decent charge on a battery. Now, we have a 60w panel at the shed, which is rather large to take up to 10,000 ft and place on the side of a mountain, and given the consistent wind element up there, we are hoping to do a hybrid system of both solar and wind. This is where things get tricky. A perfect balance, or even a more wind heavy balance would be great, such as 30-40w wind 20-30w solar. That keeps the panel size down, and uses a power source that runs 24/7. A Faroun Savonius wind turbine seems like the best system, but the controller to prevent overcharging etc is where I get nice and lost, having breached into very unknown territory. https://www.instructables.com/id/Faroun-Savonius-Wind-Turbine/ http://www.fieldlines.com/board/index.php/topic,129060.html This looked at 1st like a good, cheap system to use a controller board for the wind, but my question is would the controller board that comes with these solar panels (see below) work for both. That below is the setup that we use more or less at the shed, with some mods, such as a better alternator. http://www.costco.com/Browse/Product.aspx?Prodid=11298029&search;=solar&Mo;=5&cm;_re=1_en-_-Top_Left_Nav-_-Top_search&lang;=en-US&Nr;=P_CatalogName:BC&Sp;=S&N;=4001192&whse;=BC&Dx;=mode+matchallpartial&Ntk;=Text_Search&Dr;=P_CatalogName:BC&Ne;=4000000&D;=solar&Ntt;=solar&No;=3&Ntx;=mode+matchallpartial&s;=1&topnav;=&Nty;=1&s;=1 So, can a small, 30-50w wind turbine and generator be built, with a small solar array to power this thing? I dont care if we have some down time, this is primarily going to be used as a system to get a weather station with web cam to send in hourly photos during the peak hours. I can have the system at the shed shutdown automatically  using some cron jobs in linux during the evening to conserve power. When there are people at the shed, we would like to be able to get a good enough wifi connection to use a wifi device (such as an android phone or ipod) to use as a voip phone in essential communication. The teenagers aren't going to be chatting with their friends for hours, but we would like to be able to put a short call through in case something goes wrong, or we just need to get ahold of someone at the shed or in the city. Next the equipment at the shed should be comparable to the repeater node,  sans 1 antenna and just some low power embedded system. We would like to get a webcam and weather station hooked up on this end, but that can wait for upgrades later if needed, if power doesnt allow it. like I said, a simple water turbine could be used (something similar to the wind turbine perhaps?) and even another wind turbine could be built to add extra power dedicated to running any system at the shed, though I dont think the wind is quite regular enough to be viable here, but if its cheap, we could throw it on anyways. equipment at the home in the city is simple, just use an extra laptop or desktop we have laying around to be server/router, hook up antenna to this, broadcast connection, run the weatherstation/webcam web server off of this. So, thats the plan, but load of input is needed to try to come up with this. We hope to try to keep this sub $1000.00, but the budget could go higher. This is DIY at its finest! Thanks in advance for you help!

Topic by kydan    |  last reply