Network ON/OFF Switch with Timer

Hello there, I am a network administrator and trying to create a simple device to test the alarms on our systems. Since I am not an electrician of any sort, I have an idea of what I need, but no idea of parts or names to order. Basically, I need to have a basic on/off switch with button that I can wire to a CAT5 cable. Simple enough, stops traffic at the push of a button but thats the obvious part. I also need to have some control over how long my connection times out, and after some research, I think a timer relay does that, but I can't be sure. It just needs to turn the activity back on after it goes off say between 1 second and 10 seconds off, the connection turns back on. If I can accomplish that, than I would also like to add a dimmer type device such as that of a light switch dimmer, but smaller and working with less voltage. So... Can this be done with all 3 electric devices? The closest thing I found in searching was some generic Lag Switch, but it did give me a starting idea of how to design it. I drew a simple draft of what I had in mind. Any help by some electric gooroo's would be most appreciated. Thanks! Jonathan

Topic by hannibalxlecter   |  last reply


waterproofing

Does any one know how i may make a waterproof webcam i want to study my fish from inside the tank

Topic by TT__TT   |  last reply


Renegade Teenage Engineers

Now this is a collaboration.

Topic by fungus amungus   |  last reply


Explosions for football game

I am a chemistry teacher and I need to make a set of explosions for the football team to run through. The run on the field and the explosions go off on each side of them Any ideas. I may fill a dozen metal coated baloons with hydrogen and, and ignite them with some sort of electric spark strong enough to pepetrate the baloon. I'll put six of them on each side of the path that the team runs out through under the goal post. And how will I make the system to spark them off (electric plug in?)(capacitors, tesla coils, etc.?) thanks

Topic by ChemNut   |  last reply


Which is better?

Well i was just wondering which do you think is better ask.com or google.com i know google is more popular but which one is overall better? ask.com:pros: Can see screen shot of website. shows pictures of the search item on the side. shows blogs on side. gives you suggestions. I thinks thats it now for google. google.com:pros: Most browsers have a little bar at the top for searching. Most popular searching site. Can't think of anymore.. ask.com:cons: Not very popular All i can think of. google.com:cons:doesn't have all that stuff that ask.com has. That seams to wrap it up. What do you think is better? Also if you have any thing to add on the pros and cons list post them here.

Topic by Easy Button   |  last reply


How to beef up a Crest Spinbrush pro

Hello, first off I'm new to this site. I found it Monday and I think it's great. A while back our local news had a tech guy on showing some new inventions with toothbrushes. Just for fun he also had a Crest Spinbrush with some extra batteries taped around the handle which raised the RPM's of the brush. Any idea what it would take to do this?? thank you Jethrow~

Topic by jethrow815   |  last reply


circuit troubleshooting help

Hi- First on an unrelated note, does anyone besides me see "A fatal, non-recoverable error has occurred" over on the Makezine forums when you try to sign in? I've been getting that for weeks! Anyway... I'm working on a variable power supply that uses a 317 to regulate the 18 volts coming from a laptop switching supply. There are two 5k 10-turn (for precision) pots with a switch so that you can have two "preset" voltages and switch between the two of them at will. There's a single output. There's also a little lamp (I used a micro mini 12v lamp instead of an LED because that's what I had) that goes on above the pot that's currently switched in. The circuit I built (schematic is below) seems to work more or less fine. 'cept there's two strange issues: First, although the pots are linear (not sure if that would make the difference or not), they seem to "flatten out" toward their upper range. The first six turns gets you from 1.2 to about 16.5 volts. Then the last four turns either don't change anything or they do so in _very_ fine increments so that you only get from 16.5 to just over 17 volts. That's in four whole turns of the knob. This happens for both pots. The second stange thing is that turning the non-activated pot will affect the current voltage. When you increase the resistance (turn the knob to the right), the voltage level actually drops! Conversely, turning it to the left will increase the voltage. Remember, this is the switched-off pot. The switched-on pot works as it should (barring the mentioned weirdnesses). It looks like how much the voltage changes depends on how many turns you've given the activated pot. I suspect this has to do with me using a SPDT switch instead of a DPDT and maybe some voltage / current bleeding through the lamps and into the adjust pin, or something. But I ca/n't figure out why the switched-off pot would do anything. Anyway, take a look at the schematic. Is there anything I've done wrong that I'm missing? Should I, um, switch (*cough*) to a DPDT switch (something like the second schematic)? I used the SPDT cuz that's what I had. Anyy help is appreciated, Thanks!

Topic by deadbilly   |  last reply


Instructables in Trendwatching

Instructables was mentioned by Trendwatching in their September 2006 Status Skills article.Here's a quick selection of sites helping the masses acquire a bewildering array of skills:Instructables is a project by Squid Labs, who create a lot of stuff for business and pleasure, and have now documented their how-tos for all to see and use.More news articles about Instructables here.

Topic by ewilhelm   |  last reply


What is that thing ?

Hello ! So, here is a series of pictures that my brother took about two weeks ago (2007/08/29, at 23:00 french local time). He was going to sleep in his van when he saw a weird blinking/moving light at the horizon. He put his digitalcamera (Fujifilm Finepix S5600) on his tripod, quickly configured it, extended the zoom to the maximum (optical + digital zoom) and took two series of photos with the burst mode. Then, he tried to quickly reconfigure his camera and to take one more manualy. Facts : His tripod seems quite stable : stars don't move from a picture to an other. As we can see thanks to the last picture (a photo of an other part of the sky took with the same parameters), the stars of the two series seems not to be "dead" pixels of the CCD sensor. Known parameters : ISO 400 shutter speed : 1/2.5s. He says he doesn't know what it is. With my other brother, we tried to find an explanation, but so far, we failed. What do you think about this "UFO" ??

Topic by chooseausername   |  last reply


I can't drag and drop images from camera to folder....

Ok, so this one has been bothering me for a while. I hook my camera up via USB to my computer, and drag the pictures I took to folders on my hard drive. I liked this method because I didn't have to name pictures, and it was a helluva lot faster. But, for a while now, I haven't been able to drag and drop pictures to folders. I don't know why. Right now, I'm forced to use Windows Picture Wizard, which I detest. I've checked, and it seems to be my camera, because I can drag and drop from folder to folder on my computer. I'm running XP, it's a Canon Powershot S3 IS, and I'm working on a fairly big iBle. Please, don't say it's because I have a Canon (W-Burg)! Thanks for any help!

Topic by Bran   |  last reply


Breadboard (again)

These are some new pics of my breadboard circuits. I also have figured out how to wire my 7 segment LED.

Topic by DELETED_Nicker987   |  last reply


Extra Electronic Components

I got an old DVD player, opened it up, and got: -11, 10vdc 47uf caps -6, 16v 10uf caps -5, 10v 220uf caps -6, 6.3v 470uf caps -2, 10v 1200uf caps -2, 16v 820uf caps -2, 10v 1000uf caps -2, 10v 100uf caps -100v 22uf cap -25v 220uf cap ( why is it brown/gold colored?) -Power regulaters (?) *says:C3852, 96 *says:C3852, 95 *says:C3852, 94 (has a heat sink) *says:STR, G6651, 95, 06 Thats about it. What can I do with these?

Topic by John Smith   |  last reply


Renewed Interest In Space, Lunar Explorations

Japan's space agency today launched its much-delayed lunar probe in the most ambitious mission to the moon since the US Apollo space flights.The Selenological and Engineering Explorer — or Selene — probe was launched on board an H-2A rocket from Tanegashima, the remote island location of the agency's space centre..............................Japan's mission comes at a time of renewed interest in the moon. China plans to send a probe, the Chang'e 1 to the moon, possibly this month. The Chang'e 1 orbiter will use stereo cameras and x-ray spectrometers to map three-dimensional images of the lunar surface and study its dust. China's official Xinhua news agency has reported that a manned probe could be launched within 15 years. Japan is also considering a manned mission by 2025.Meanwhile, Google has launched a $20m (£9.9m) competition to send a robotic mission to the moon. To claim the prize, a team of researchers will need to send a rover to the moon, make it roam for a minimum of 500 metres and send video, images and data back to Earth, all before December 31 2012.Full article hereRelated Articles:UK astronaut on moonIndia's unmanned probePlan for spaceport in SingaporeEverybody else want to go to space too..

Topic by gyromild   |  last reply


Hacking a 1-sec accurate timer

Hey all, For my digital SLR camera, I've hacked together a cable relase using a three-way switch. This works a treat, and now it's time to graduate to full automation to help with night time navigation. For this I need to build a timer that keeps a switch in the 'on' position for a certain number of seconds. The timer needs to be accurate to the nearest second, so nothing fancy. Ideally it would be a number pad I can type into the number of seconds. So any ideas? I'm putting together a short instructable to make the cable release. Cheers, Pierre

Topic by eKstreme   |  last reply


Laser cutting and engraving machine

Hey i wanted to ask you people that has any one used Epilog Mini 18"x12" company's (U.S.A.) laser cutting and engraving machine as am planning to buy in sometime so i want to know hows its performance :) as am from india so suggest me accordingly

Topic by dj_square   |  last reply


resistors

How many ohm resistor would i need to resist 7 volts to 3.5 volts and 12 volts to 3.5 volts also....

Topic by Yerboogieman   |  last reply


fake hearing aid, needed!

I'd like to take a basic $20 hearing aid - you know the type - and then rig it as a bluetooth earpiece. In short, I think it would be much better than using those 'slick' metallic earpieces I see people wearing around. I think it could be a great project, but I have very little knowledge about bluetooth electronics. Any suggestions for getting started?

Topic by lalagrande 


Online Game Recemendations

I have 2 games (and a half), first: runescape.com this is an adventer MMORPG. You battle different types and levels of monsters and characters. You can strive to be the richest or to be the strongest. Second: hflhotel.4t.com this is a habbohotel.com fan site with its own habbo like interface. You log in and you automaticly get 800,000 free coins. In habbohotel.com you have to buy you're coins for 10 cents a coin. That can add up! 50 coins is $10, so I recomend what they call, a retro habbo. (I am sorry... this website had been moved to a different server or deleted. I am sad too) In a half: habbohotel.com I dont recomend this game unless you have 500 dollars laying in a dust gathering pile in you're tool shed or you will have the least of fun!

Topic by ellomate56   |  last reply


LCD TV Display or Monitor for Security Camera

Another tech guy at my school and I were thinking of buying this camera for the auditorium. The light/sound booth is off in a back corner, and due to a not-quite-big-enough window, it is almost impossible to see any activity on the stage when it's dark. This is an issue for when, say, we are supposed to turn on lights as soon as someone's onstage. We already have plenty of hiding places for it in the ceiling, and it had an array of IR LEDs, to further help it see the stage.The problem is a monitor. It has composite RCA output, and we need to find something that will display it. It doesn't need to be big, as the booth is just barely big enough to fit three or four people in. However, we would like to find an LCD, because we don't have much room for a CRT. Also, if you haven't guessed already, it has to be pretty cheap. I think I saw a display a while back that was a 10.4" LCD with RCA input and no tuner for under $30, but I can't remember what it was called or used for, much less where I saw it. Does anyone have any ideas where I could find an LCD display? Spambots need not apply...

Topic by CameronSS   |  last reply


Cyclocomputer Sensor & Anemometer

Hy guys, good work here!!! I've an issue to build a sensor for the magnet of a computerbike.. How i have to proceed? I hope i have to connect a solenoid to the computer.. ?

Topic by Gargiuseppe   |  last reply


Camera USB charger

Does anyone think it would be possible to add a usb charger to my fuji finepix s5600.it doesnt even have a charger at the moment, i have to take out the batteries and put them in a charger and i always forget to put them back =D lol typical me.thanks for any help

Topic by sam3352   |  last reply


Anyone know supply voltage for a Microtek ScanMaker 3600 flat-bed scanner?

. I just rescued a Microtek ScanMaker 3600 flat-bed scanner from the curb and can't figure what kind of power it takes. Nothing on the scanner case and the web pages at Microtek just say "wall adapter" without any specs. Didn't find a SM3600 fan site, just reviews that mention adapter as being an in-the-box item. Anyone know volts, AC or DC, and polarity? . There was a slight drizzle going on when I rescued the scanner. I've got the case open and I dried what few drops I could get to with paper towels. Is there anything in a scanner that will quit working/burn up if it gets wet or can I safely power it up once it dries out for a day or two? . I don't really need a scanner, but I've read on here that the cold-cathode thingies are fun to play with. :) . TIA

Topic by NachoMahma   |  last reply


Biotechnology

I have to right a paragraph on biotechnology for school so I wanted to know if some of you could help me because I am having a hard time. - What is biotechnology? - What are the duties of the person in this career? - What education background does a person need? - What is the possible salary a person could earn? - Who employs a biotechnology person? -What is interesting about this career? Help is very much appreciated. Thank you Patrick Sowers

Topic by Pat Sowers   |  last reply


iRobot Create Challenge Deadline Extended

The iRobot Create Challenge deadline has been extended by one week. Entries are now due by 11:59pm Sunday, September 9th, 2007Note that multiple entries in the contest are allowed. If your robot is already done and documented, feel free to use this time to explore another project with your Create.

Topic by canida   |  last reply


Tiny Screens (Like LCD)

Im trying to make my own didgital watch that can show weather and all other stuff as well as tell the time. I need the screen to be cheap, thin, and a little bigger then a quarter (watch size.) Anyone have any ideas as to waer I can get screen this size?

Topic by Aerandirel   |  last reply


MP3 to Cassette Tape

Would like hook up my laptop to a cassette recorder/stereo so that i can make mix tapes from MP3's. My brother's friend did it years ago, but can't remember how he did it for the life of me. Any suggestions on certain cables I need or any other information. Much appreciated.

Topic by phughes151   |  last reply


A message to iRobot contestants

Well..the deadline is coming soon. I know I had a lot of fun building my robot, and i'm sure you had fun too. I know i've got some really tough competition out there, and I just wanted to wish you all luck. Even if I don't win at all I know that I'll be walking away with a lot learned (and a create =] ). I think each of the projects entered in this contest really do deserve a prize.Micah

Topic by Weissensteinburg   |  last reply


Firefox and Ebay etched MacBook

Check out this laser-etched MacBook that was auctioned for charity. Tetranitrate used our new Versa Laser to etch the Firefox and Ebay logos (as requested by the auction winner). More here on the Spread Firefox blog.

Topic by ewilhelm   |  last reply


instructables not showing up under sort by recent, or otherwise.

So, I have noted that on all the instructables I make, they usually don't show up at all when you sort by recent, letalone searches. is there something I'm doing wrong? (and yes, the instructable in question IS published) a link to the one in question is https://www.instructables.com/id/EOM1FDMF6B7Q3S9/Thanks!

Topic by bleachworthy   |  last reply


Help Please.

Help, I am Working on a projest, but for it to turn out well, I need to have the instructable that shows you how to hook an LED up to your speakers so when your spaker makes a sound, the LED lights up. Has anyone seen it/ can find it for me, Please?

Topic by Bradley1000   |  last reply


(solved) Need a Volunteer : Science : How do they guess the chemical composition of things ?

Hello :-) Here is one of my many unanswered questions ... I googled a lot about this one, but so far, I failed to find anything usefull, probably because I don't have the correct vocabulary. That's why I'm asking to you ... I'm still wondering how scientists manage to guess the chemical composition and molecular structure of things ... For example, how do they know that saccharose is C12 H22 O11, and that it's molecular structure is like the picture below ... About crystals, I've read that they use Crystallography to determine the arrangement of the structure ... But how do they do with organic elements ??? Thanks in advance for your help :-) PS : I can't post this thread into the "Volunteer" group forum. It says that I don't have the autorisation. Do I have to join the group too ?

Topic by chooseausername   |  last reply


Basic DC (direct current) theory and practice for newbies

Hey everyone, as you may have guessed - i'm a newbie to DC theory! Backstory: after graduating i said 'forget it' to a proper job and moved to Australia to travel. i bought a converted camper van that has an auxillary battery for (whatever), and it looks like it runs off 12 volt dc! the Question: how does DC power work, for me and all those newbies out there putting along on the other side of the planet! -cheers, adrian www.bigquestionmarks.blogspot.com

Topic by adritek   |  last reply


What technology would be better used for something other than its original purpose?

What technology would be better used for something other than its original purpose?This is the fourth of five questions from the FM:Tech Battle Royale moderated by Ask a Ninja. Help me answer. Disclosure: The FM site is sponsored by Toshiba who is also an advertiser on Instructables.

Topic by ewilhelm   |  last reply


LED, bipolar diffused common-cathode ultra wha?!

I was browsing through one of my local supplier's LED catalogue..Literally overwhelmed by the types of LED out there.. Diffused, non-diffused, super flux, super bright, ultra bright, common anode, common cathode, flashing, bipolar, etc..Anyone care to enlight this electronics noob? Plus some of the LED spec says something like 630nm, 1800mcd, what do they mean? Thanks..

Topic by gyromild   |  last reply


LEDs on eBay?

My brother and I recently made an eBay account, and we were just browsing through everything and we came across many LEDs. Most of the LEDs in bulk that I saw were from China or Hong Kong. I am just curious if anyone knows how reliable, safe, and if I would be getting my money's worth. I did buy some from besthongkong.com, and those came, but I am a little skeptical about these guys on eBay. Any suggestions?

Topic by Brennn10   |  last reply


Baseball retrieval system?

My son plays little league baseball and there are quite a few balls "just out of reach" on some private property with a 6' high chain link fence. No barbed wire, but lots of poison ivy. Wondering if you folks could help me McGuyver something to retrieve these baseballs. I got as far as PVC and some sort of grappling hook, but then again, I'm a newbie ;-) Any help would be appreciated. Thanks!

Topic by Dougmeister   |  last reply


Duct Tape Bandages

I thought this was cool, duct tape bandages!3M Duct Tape Bandages

Topic by youve   |  last reply


Instructables in the Telegraph -- Weird and wonderful inventions

The Telegraph ran a great article featuring online DIY culture and Instructables. Weird and wonderful inventions by Chris StevensMeet the DIY enthusiasts using the internet in their fight against throwaway society.The internet has spawned a new breed of extreme DIY enthusiasts. They build jet engines in their garages using instructions downloaded from forums, and they upload videos of the explosive results. They weld together rollercoasters out of scrap materials and household items. They teach themselves taxidermy to build "The Mouse Mouse", a real mouse with electrical innards. Or, like 17-year-old Thiago Olson, who built a fusion reactor in his house, they're scouting for parts in their local B & Q. The online DIYers are rebelling against a consumer society that has convinced many of us that everything is bought, not made. "It's a reaction against a mass-produced culture," says Eric Wilhelm, founder of Instructables.com. "People want to express themselves and show their individuality - building something cool that you can't buy and showing how you did it is a great way to express yourself."While the traditional DIYer is overjoyed to have put up a set of shelves without losing a finger, the extreme online DIYer spends the weekend with an angle-grinder turning a supermarket trolley into an armchair, or building a Guitar Hero game controller from scratch. Online projects show you how to make your own USB charger, extend the battery life of your laptop, or use a Mont Blanc refill to transform a £1 pen."People are passionate about all sorts of things," says Wilhelm. "From the wacky, far-out jet engines and taxidermy to the everyday stuff like how to tie your shoes or manage washing your laundry most efficiently."The projects are uploaded by users, who offer each other step-by-step advice on everything from the sinister to the charming. The extreme DIYers dare each other to create increasingly elaborate projects, posting photos and videos of near-misses and successes. The internet is perfect for this kind of experimentation; it's a place where inquisitive geeks meet friends with power-tools. All these projects have gorgeous colour photos to go with them, and the strength of interest in these extreme-DIY sites has led communities to meet offline. This year, Makezine.com held a fair in the US attended by 45,000 "makers"."Besides the skill of building and the exchange of ideas, it's a lot of fun," says Phillip Torrone, senior editor of Make magazine. "We seem to be in an era of thinking more about the things we buy, make, consume and cherish. The result of that is people making things - it's more gratifying." Scandals over rip-offs, such as the recent study that showed ink-jet printer cartridges wilfully waste more than 50 per cent of the ink (tinyurl.com/2957jw), make Torrone's DIY ethos all the more appealing.If you're the sort of clumsy oaf that regularly snaps USB keys off in their sockets, these DIY sites also offer advice on repairing consumer electronics. Wilhem's favourite DIY project is the dachshund wheelchair (tinyurl.com/ytc6bb). The DIYer who made it explains: "Our dachshund hurt his back, so for rehab we made him swim a lot, and I built this chair until he could use his back legs again."Online DIYers have an enthusiasm for science and exploration, and many are simply reacting to the low-quality of mass-produced goods, especially consumer electronics. They object to our modern throw-away culture. The DIYers also upstage technology manufacturers by demonstrating easy ways to fix what would otherwise be thrown away. "It's really more about problem-solving with more people", says Torrone.More news articles about Instructables here.

Topic by ewilhelm   |  last reply


Led powered by 9v

Hi all. I am new to this forum and need some help. I want to mount an led strip to the bottom of a roller skate. Everything I find already made up requires 12v. I need to keep the setup as small as possible for mounting reasons. How could I go about making a 12vdc led circuit work off a 9v battery or how could I wire up some led's on a flexible strip powered by a battery. I am thinking 9v because I can purchase a rechargeable set without draining the bank account each time. Any suggestions are welcomed. I have about 6" in length to mount the strip to. I would like multi color led but one solid color would also be fine. Thanks again for any suggestions.

Topic by rsfaze   |  last reply


Gnome-panel error

I need whoevers help with this. Whenever I try to open synaptic, install a program in the terminal or use add remove programs i get this error: E: The package gnome-panel needs to be reinstalled, but I can't find an archive for it. Does anyone here know how to fix this? All help, even attempts, are appreciated.

Topic by sardines454   |  last reply


I can't check threads either - error 500

ERROR 500: javax.servlet.ServletException: javax.servlet.jsp.JspException: ServletException in '/common/layout3col.jspx': ServletException in '/pages/forum/topic_body.jsp': java.lang.reflect.InvocationTargetExceptionExceptionjavax.servlet.ServletException: javax.servlet.jsp.JspException: ServletException in '/common/layout3col.jspx': ServletException in '/pages/forum/topic_body.jsp': java.lang.reflect.InvocationTargetException at com.caucho.jsp.PageContextImpl.handlePageException(PageContextImpl.java:1114) at _jsp._pages._forum._topicjsp._jspService(_topicjsp.java:77) at com.caucho.jsp.JavaPage.service(JavaPage.java:60) at com.caucho.jsp.Page.pageservice(Page.java:570) at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:179) at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:115) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:485) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:350) at com.instructables.webapp.forum.ShowForum.show(ShowForum.java:117) at com.instructables.servlet.ExploreServlet.doGet(ExploreServlet.java:97) at javax.servlet.http.HttpServlet.service(HttpServlet.java:115) at com.instructables.servlet.InstructHttpServlet.service(InstructHttpServlet.java:37) 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:155) at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70) at com.instructables.filter.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:71) 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)Caused by: javax.servlet.jsp.JspException: ServletException in '/common/layout3col.jspx': ServletException in '/pages/forum/topic_body.jsp': java.lang.reflect.InvocationTargetException at org.apache.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:923) at org.apache.tiles.taglib.InsertTag.doEndTag(InsertTag.java:457) at _jsp._pages._forum._topicjsp._jspService(_topicjsp.java:73) ... 24 moreCaused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: ServletException in '/pages/forum/topic_body.jsp': java.lang.reflect.InvocationTargetException at com.caucho.jsp.PageContextImpl.handlePageException(PageContextImpl.java:1114) at _jsp._common._layout3coljspx._jspService(_layout3coljspx.java:190) at com.caucho.jsp.JavaPage.service(JavaPage.java:60) at com.caucho.jsp.Page.pageservice(Page.java:570) at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:179) at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:115) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:485) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:350) at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:927) at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:864) at org.apache.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:143) at org.apache.tiles.TilesUtil.doInclude(TilesUtil.java:149) at org.apache.tiles.taglib.InsertTag.doInclude(InsertTag.java:760) at org.apache.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:892) ... 26 moreCaused by: javax.servlet.jsp.JspException: ServletException in '/pages/forum/topic_body.jsp': java.lang.reflect.InvocationTargetException at org.apache.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:923) at org.apache.tiles.taglib.InsertTag.doEndTag(InsertTag.java:457) at _jsp._common._layout3coljspx._jspService(_layout3coljspx.java:165) ... 39 moreCaused by: javax.servlet.ServletException: javax.servlet.jsp.el.ELException: java.lang.reflect.InvocationTargetException at com.caucho.jsp.PageContextImpl.handlePageException(PageContextImpl.java:1114) at _jsp._pages._forum._topic_0bodyjsp._jspService(_topic_0bodyjsp.java:142) at com.caucho.jsp.JavaPage.service(JavaPage.java:60) at com.caucho.jsp.Page.pageservice(Page.java:570) at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:179) at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:115) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:485) at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:350) at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:927) at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:864) at org.apache.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:143) at org.apache.tiles.TilesUtil.doInclude(TilesUtil.java:149) at org.apache.tiles.taglib.InsertTag.doInclude(InsertTag.java:760) at org.apache.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:892) ... 41 moreCaused by: javax.servlet.jsp.el.ELException: java.lang.reflect.InvocationTargetException at com.caucho.el.StaticMethodExpr.evalMethod(StaticMethodExpr.java:142) at com.caucho.el.FunctionExpr.evalObject(FunctionExpr.java:71) at com.caucho.el.Expr.evalStringNonNull(Expr.java:216) at _jsp._pages._forum._topic_0bodyjsp._jspService(_topic_0bodyjsp.java:89) ... 54 moreCaused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor128.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.caucho.el.StaticMethodExpr.evalMethod(StaticMethodExpr.java:133) ... 57 moreCaused by: org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60) at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:140) at com.instructables.model.persistent.User$$EnhancerByCGLIB$$3399e775.getScreenName() at com.instructables.taglib.Functions.showURL(Functions.java:64) ... 61 more

Topic by Kiteman   |  last reply


Instructables in the New York Times -- Romancing the Flat Pack: Ikea, Repurposed

Instructables, member mzed, and his Low-cost Spherical Speaker Array all were mentioned in Romancing the Flat Pack: Ikea, Repurposed by Penelope Green at the New York Times. ..."I think there is a movement around looking at all the products that are available -- this global stream of stuff -- and realizing you can tinker with them and rebuild them," said Michael F. Zbyszynski, 36, the assistant director of music composition and pedagogy at the Center for New Music and Audio Technologies at the University of California, Berkeley, whose own hack is a speaker array made from red plastic Ikea salad bowls, and who has made other musical objects from PVC plastic and coffee cans that "live in the zone of the hack," he said."It's all about not accepting what's presented for sale as it is," Mr. Zbyszynski said, "about not just doing a 'paint by numbers' of your life."...ReadyMade is part of a universe of D.I.Y. media and forums where Ikea hacks appear and are then found by Ms. Yap, who links her blog to them. It's a universe that includes Make magazine (more science than design-geeky, for the handmade-robot set) and Web sites like instructables.com, which was created by M.I.T. Media Lab alumni as a forum for its users to share knowledge about how to make or do practically anything, including, as a glance at the home page the other day revealed, a quick banana nut bread and "hacking a toilet for free water." Mr. Zbyszynski's speaker array, with its goofy "Lost in Space" aesthetic, first appeared there.See more news mentions of Instructables here.

Topic by ewilhelm   |  last reply


What technology did you expect would be available now that isn't?

What technology did you expect would be available now that isn't?This is another question from the FM:Tech Battle Royale moderated by Ask a Ninja. Help me answer. Disclosure: The FM site is sponsored by Toshiba who is also an advertiser on Instructables.

Topic by ewilhelm   |  last reply


Make your own slot machine - advice from a real Maker

I was looking for something else, and found this site by local (he lives about twenty minutes from me) Maker Extraordinaire, Tim Hunkin. He has a main site, as well: http://www.timhunkin.com/ .Tim is best know in the UK for an old TV series "The Secret Life of..." (In which I once saw him record his own voice on stickytape), a similarly-themed exhibition he did in the Science Museum in London, and for his newspaper cartoons called The Rudiments of Wisdom.

Topic by Kiteman   |  last reply


Nintendo DS Slot 2

So, since theres a Slot 2 Rumble Pack on instructables, we need one that's a flash card, just like the one for Nintendo DS browser, because people might have lost their SLot 2 flash cards for Nintendo DS browser

Topic by Sadam and Osama 


Can I connect a cell phone to an old touchtone landline phone?

I want to connect my cell phone to an old 70's touchtone landline phone. Can this be done. I know you can connect a reciever to a cell phone but I miss the old touchtone keypad. Any advice?

Topic by paperseal   |  last reply


Hack A PCB

Is there a good way to solder or just connect wires directly to traces on a one sided PCB?

Topic by Doug Costlow   |  last reply


Im getting errors also (couldn't respond to that post)

Error 500 Java servlets yada yada .... a whole page full. Sept 7 , 4:45 EST , Mozilla

Topic by VIRON   |  last reply


MP3 hack problem PLEASE HELP!

I am replacing an old mp3 rechgargeable battery rated 3.7 volts with another one that is also "rated" 3.7 BUT when measured with the Vmeter the little bugger gives an output of 4.2, (too high) is there anyway we could add a led or some resistors to lower the voltage without draining the battery when the device is off? Thanks for any suggestions Cheers!

Topic by dejabox   |  last reply


Timer for solar LED dusk/dawn light

I needed a solar recharged, LED light that came on at night. I purchased a small LED light (rather bright with 6 LEDs) that has a solar cell, photo eye and 3 AA size rechargeable batteries. Made to clip on the patio umbrella, it is ssmall and light. The solar cell and photo eye are on one piece. The LEDs, batteries and circuts are on another piece. the two pieces are joined by a wire and are hinged together, allowing the unit to clip on the edge of the umbrella. I plan on removing the hinge and extending the wire to allow a two foot separation. I need to add a timer to this. Something that will turn off the light about 4 to 5 hours after it comes on. I assume it will be something that starts when the LEDs are powered up. Though I guess it may be something that is also triggered by an additional photoeye. Or maybe someone has a better idea? thanks

Topic by jnlvngstn   |  last reply