Vortex Air / Vacuum Amplifier Help?!

Ok I need something to amplify my shop vac. I am building a cnc machine and I will have a vacuum attached near the cutting head. The problem is the distance of the pipe. The vacuum will barely be strong enough to pick up dust. I have seen some really cool vacuum amplifiers and air amplifiers that just run off compressed air. You get 25x what you put into it, but they want an insane amount of money for a machined metal ring. Here is what I am talking aboutwww.airtxinternational.comhttp://www.airtxinternational.com/catalog/air_amplifiers.phphttp://www.airtxinternational.com/catalog/high_thrust_air_jets.phpIt is all based off of the Hilsch vortex tube. There is an instructable on how to make one. They are just spinning the air to induce the surrounding air to move.There has to be a way to do the same thing or make these for a ton less than what they are charging. Anyone have any ideas?

Posted by Distorted Designs 10 years ago

water vortex power

Embedding disabled. Here's the URL: http://www.youtube.com/watch?v=3J87lzqMEnI Forum discussion in Italian:http://forum.nexusedizioni.it/vortex_generator-t1086.0.html

Posted by beforethought 10 years ago

nerf m203

I have been looking around and have not found a good design for a nerf m203 grenade launcher so i made this picture. (note i have not made one but i might, just an idea) it will fire a nerf pocket vortex in will go below the Nerf recon the tactical rail it would be more for function than look. tell me what you think. ps i may just use a air fitting for a compressor  rather than a pump.

Posted by ninjusk 8 years ago

Floating Garbage Island Twice the Size of Texas Aimlessly Spins in Pacific Ocean

The largest dump in the world isn't outside New York or London or Shanghai but in a desolate stretch of the Pacific Ocean nearly a thousand miles from the nearest island. Held together by a slowly rotating system of currents northeast of Hawaii, the Eastern Garbage Patch is more than just a few floating plastic bottles washed out to sea; the Patch is a giant mass of trash-laden water nearly double the size of Texas.Full Article:Plague of Plastic Chokes the Seas in the LA TimesQuick Blurb:Oceans of Garbage on Vestal Design

Posted by noahw 10 years ago

Dolphin Bubbles: This is SO cool !

Apparently dolphins can learn to blow bubbles or more precisely, air vortex rings. Take a look at the video:

Posted by Goodhart 9 years ago

"Video Not Available" problem

Some folks who see my instructable "Create a Beautiful Vortex" , get a "Video Not Available". I've had a couple of complaints in the comments under that instructable.It plays ok for me and most others. Can this be fixed??

Posted by mrfixitrick 9 years ago

(newsletter) Inverted Bookshelf, Vortex Cannon, Face-Casting...

Oct 2, 2008 Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup1","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); } Welcome back!Enter your food hack into the Hungry Scientist Contest and win your choice of a Kitchen Aid mixer, a super nice knife set, or a Le Creuset Enamel Cast Iron Cook Set. Help us with your answers for our Burning Questions and win a cool prize pack!The Forbes Fabergé-Style Egg Contest still needs your eggs! Take an egg (real or fake) and decorate it inside and out in homage to the classic Faberge style. You can win a Sonos music system, and get your egg featured in the Forbes Galleries in New York City!Live near San Francisco or planning a trip? Stop by for one of our build nights and make something cool in our office! October 2: Intro to Chainmail; October 23: Halloween open build night.Upcoming...The DIY Halloween Contest officially launches tomorrow! Enter your costumes, decorations, gizmos, food, and jack-o-lanterns to win some awesome prizes! It's our biggest and best Halloween contest ever! Transmuted Victorian Journal by jktechwriter How to Make Vortex Cannons by Kipkay V10 Vertical Axis wind Turbine by faroun How to Pan For Gold by mdavis19 Vote for your favorites now! Show us your eggs! Make Limoncello by tellumo Sew Your Own Pajama Pants by compwalla Bush Knife with Wood Handle by 42ndOddity Portable Bike Trailer Solar Generator  by veggiecycle Book Binding: BSG Edition by gmjhowe Cast a Face in Plaster by rachel Make Butter by lbailey825 How to Throw a Punch by Isshinryu 10 ways to turn your home into a haunted destination Share your best food hacks! Make "Butterzopf" or Challah by t.rohner Knit Touchpad by Plusea Concrete Lamp by hands_on Inverted Bookshelf by fungus amungus Now go make something awesome, and I'll see you next week! - Eric Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup2","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); }

Posted by fungus amungus 9 years ago

New water power, 'reverse" archemedes screw from Germany and gravitational vortex from Austria

I think the gravitational vortex is a few years old and I only found the Reverse Archemedes Screw yesterday. Would anyone like to do instructables on them? It seems both are attempts to make hydroelectric power a bit more fish friendly.  They say the reverse archemedes screw is very efficient too. Check them out and see what you think.  I put videos about them in this playlist http://www.youtube.com/view_play_list?p=FD3B655FED590244 While I am here, why do the screws shown not have the auger and shell of the screw all welded together? Perhaps it is just for cleaning reasons?  Or maybe it is just  too difficult to make a "spiral staircase" inside a pipe? Anyway, it looks like excellent projects for someone.   The reverse archemedes screw is totally new to me. I have seen videos of the austrian system before. If they are fish friendly, lets make them popular. One question, how do the fish migrate up the river? Brian

Posted by gaiatechnician 8 years ago

Happy Birthday, Mr Laser, Happy Birthday ... to ... you

OK, so it's hard to do an impression of Marylin Monroe in a topic title.Today, is, according to google, the anniversary of the invention of the laser. First demonstrated in 1960, it was known as a solution looking for a problem - everybody agreed it was clever, but it took some time before it saw a practical use. Now, every single "western" home has at least a handful of lasers, ad they have seen duty everywhere from art to war, via medicine and astronomy.Time to have a quick review of how this tricksie piece of hardware (especially the LED variety) has been treated by our members: Laser-based projects.Laser vortex from this InstructableGoogle's laser results

Posted by Kiteman 10 years ago

Help! Remote controlled clock hands

I have a hat that I attached a working battery-operated clock to.  I would like to know if someone could create something for my wrist to cause the clock on my head to change.  Ideally it was cause the hands to spin rapidly clockwise, counter clockwise, and return to normal function.  Extra bonus for being able to set the right time from wrist, but not super important if it's crazy more work.   I was thinking the wrist strap would have a Vortex Manipulator sort of look to it.  The idea is that the hat and wrist item work together to be a time travel device.  It's for a steampunk outfit. Any one think this is possible?  Thanks! [EDIT: According to Radioshack, they believe I would need a special clock motor to accomplish this.  Any idea of such a thing exists?]

Posted by hwiech 5 years ago

Unjailbreaking Help

I have a 4th generation ipod touch that is jailbroken. I jailbroke it by using redsnow. Some of the apps cash now so i can't use them, and its a little slower than usual. So, i've decided to unjailbreak it. If I restore it on itunes, will it go back to normal? If I restore it and put on the backed up data, will it include all of the save data on apps, bookmarks on safari, contacts data, and other stuff like that? Do I need to uninstall redsnow from my computer before I restore it? Is there anything that could happen that could possibly make my ipod forever unusable and broken? And does it take a couple hours for it to restore and put on all of the back up data, because I have about 28 gigs of stuff on my ipod? Sorry for all of the questions, but I'm just really concerned that if i try to restore it, something will happen and it will just be a $300 paperweight. Thanks in advance to anyone who can answer these questions.

Posted by vortex weasel 6 years ago

Custom Glow Table: need ideas!

Hello everybody! First of all i'd just like to say I just made an account but have been using this site for years and love you guys =] I have this idea for a tv stand / table and I am stuck. attached is a drawing of my table (tried my best). The idea is a table made out of a recycled door as the table top, clear 6'' diameter and 2' long tubes as the legs, a liquid that reacts to blacklight inside the legs of the table such as laundry soap to fill the inside of the legs, and one small waterproof fan in each of the front legs to create a vortex inside the tube. So essentially I want a table with legs made of clear tubes with a glowing tornado in each front leg and a black light mounted under the table to light em' up! I need help figuring out what would be the best / cheapest material to use to create the front legs. Also what type of fan to use that is waterproof and will have enough torque to turn the water. Any help is appreciated!!  

Posted by stupidmagnoopid 6 years ago

yugioh deck help

Hi I have a light and fairy theme deck it's an ok deck but I think it needs something As you can see I lack monsters but I think my lockdown cards take care of that, any thoughts on what I should pull out or add? MONSTERS (10) 1 darklord asmodeus  1 mystical elf 1 hourglass of courage  1 worm jetelkpse 1 interplanetary invader A 1 marshmallont 1 servant of catabolism  1 darklord superbia 1 prime material dragon 1 the calculator SPELLS (20) 1 emergency provisions 1 unstable evolution  1 attraffic control 3 mystical space typhoon 1 monster reborn 1 scapegoat 2 swords of revealing light 1 photon sanctuary  1 crashbug road 1 mirage tube 1 giant trunade  2 lightning vortex 1 nobleman of crossount 1 fissure 1 heavy storm 1 megamorph TRAPS (17) 1 waboku 1 curse of royal 1 just desserts 1 trap jammer 1 half or nothing 2 draining shield  1 spell shield type 8 2 divine wrath 1 shadow spell 1 needle wall 1 gravity bind 1 call of the haunted 1 magic jammer 1 minor goblin official 1 solemn wishes

Posted by snozzle1 5 years ago

Extreme Futurist Festival 2012

The END OF THE WORLD at www.extremefuturistfestival.com the VORTEX IMMERSION DOME 450 South Bixel Street, Los Angeles, CA 90017 featuring SURVIVAL RESEARCH LABORATORIES show Extreme Futurist Festival is a 2 day arts and technology festival focusing on radical voices of the new evolution. Last year we had a great event and were called "a TED conference for the counterculture" by the LA Weekly. This year we seek to make XFF an even more epic experience. People are going insane over the Mayan calendar hype about the world ending on 12/21/12. This is why we have decided to bring them the apocalypse they deserve. We are throwing an end-of-the-world conference that you will not forget. Children get in free. We will be focusing on cutting edge science and technology along with transgressive performance art and music. Showcasing the most innovative and subversive memetics of our time, we see to highlight an extreme future that breaks the formula of modern culture. The future has been commodified by the mainstream in an effort to make revolutionary technologies easy to digest. As a result we are now living in an era of complacency, in which the true leaders and game changers are made to feel like outsiders. It is time to rise against the dominant current of our society and declare that nothing is too extreme. We refuse to be assimilated into a carbon copied version of a new humanity. As evolutionary agents we will push the boundaries of what it means to transform our species. XFF is organized by Rachel Haywire, Christopher Jannette, and Sean Humphries.

Posted by devilDroid 5 years ago

A 15 volt Solar panel powering 12 volt dc bilge pump with no battery. How long will it stay working?

I did a little maker faire project to demonstrate how gravitational vortex power plants work. There was no electrical outlet available so I used a 15 watt solar panel to power a 12 volt 600 gallon per hour bilge pump to keep the demonstration running.  During the maker faire numerous people came between the sun and the panel and the thing stopped and restarted no problem.   I would guess that the bilge pump was running at half strength. (It has a 3 amp fuse so that would mean 36 watts is the max it can do?  An electrical engineer and a computer science student both said that I could probably leave the thing connected day and night and the low evening and morning current would not damage my bilge pump (or the solar panel).  It would just start up whenever the light got bright enough. Would anyone like to confirm that? Also, is there any arrangement with capacitors so that even the morning or evening sun will turn the thing (even if slowly) or is there a way to shunt that weak power to something useful (Like electrolysis of sea or  salty water to make bleach) and then go back to the bilge pump whenever the sun is powerful enough again? I would love to know because the project went really well and more could be done with it. Brian

Posted by gaiatechnician 6 years ago

nerf ranges

(NO MODDED NERF GUNS)ok i was wondring what are ALL of the ranges of nerf guns lleave a comment of its lowest range and its highest rangeand what gun it isBuzz Bee:Big BlastDouble ShotLaser Tek Mega Missle Mustang Six Rapid Fire RifleSingle Tek Tek FourTek Six Tek Ten Lanard Blasters:First Shot Big Salvo Blast Bazooka Maxshot Over and Under Sonic Bazooka Speed Loader Triple Shot ERTL BlastersPump Action Shotgun Rapid Fire Pump Action Shotgun Nerf Blasters:Airtech 1000 Airtech 2000 Airtech 3000 Airtech 4000Airtech Jet SquadronArmor Shot ArrowstormArrowstrikeAuto GripBig Bad BowBlastfire Bow N' Arrow BuzzawChainblazerCommlink IICrossbow CrossfireDart Tag BlasterDefender T-3 Disc Shot Double CrossbowEagle EyeEliminatorExpand-a-BlastFireflyGatorHidden ShotHornet Hydro BazookaIron Raptor Laser Fang Lightnin' Blitz Lock N' Load Longshot Longshot Front Gun Mad HornetMagstrike Manta Ray Maverick MonoblastNB-1Nite Finder: min:16' 7" max:23' 4" (thanks to zack scott from you tube)Nitro Quad Pen Blaster Powerclip PulsatorRapid Fire 20Ratchet Blast RattlerRazorbeastRazor Fin Reactor Recon Rip Chord Courtesy of DraconisRoto Track Sawtooth Scout Secret Shot 1 Secret Shot 2 Secret Strike Pocket Blaster Sharpshooter 1 Sharpshooter 2 SlingshotSneakshot Spiderman Dart Tag Gun Splitfire Stinger Stinging Scarab StrongArm SuperMaxx 250 SuperMaxx 500 SuperMaxx 750 SuperMaxx 1000 SuperMaxx 1500 (New) SuperMaxx 1500 (Old) Supermaxx 2000SuperMaxx 3000 (Blue) SuperMaxx 3000 (Green) SuperMaxx 5000 Switch Shot Switch Shots MaxSwitch Shots Super Switch Shots Ultra Tech Target Titan Triple Strike Triple TorchVulcan Warthog Whiptail Scorpion Wildfire Promotional Blasters:Kung Fu Panda Commander CrossbowPirates of the Carribean Flint Lock BlasterSpiderman 3 Blaster Spiderman Wrist BlasterStar Wars Rebel Trooper BlasterThe Batman Light Signal BlasterThe Two Towers of Uruk Urukai Bow Wayne Tech Tri-Fire Blaster Other Blasters:Air BazookaAirzone 8 Shooter Air Zone Arrow StormAir Zone Dual Fire Dart BlasterAirzone Scorpian Bow Halo Ma5c Rifle Kids Stuff Bow n' Arrow Kilroy Magnum PistolLightstorm 2 Optimus Prime Blaster Periscope BlasterPistol Splat PS-800Pool Blaster Roto RocketSplatmatic Thundersplat Spy Gear Signal Launcher Star Wars Clone Troopers Blaster SuperSoaker MaxD2000 Super Soaker 50 20th Anniversary EditionThe Proffesional Trigger FireUSB Missle Launcher Vortex Firestorm Vortex TornadoXxl BazookaXxl Skeet ShooterBlast HammerElectric EelJust Toys CrossbowMarshmallow ShooterMissile StormPreceptorQuick StrikeRam RodRocket StormUltrox Quadra CannonWrist Blitzerthanks for helping! =)

Posted by knexsuperbuilderfreak 8 years ago

Halloween Project Contest Winners

The votes are in! Congratulations to the winners of the October Halloween Project Contest!First PrizeThese three projects will win Make controller kits. How to scratchbuild a Boba Fett costume- using cardboard! by HonusLaser Vortex by meverPirate Cannon by Part Time Chef.comSecond PrizeThese five projects will win Wild Planet Toys Digital Spy Cameras. Bio hazard Beer Barrel by zieakJack-O-Laser of Doom by vatosupremeNazgul Mask for $15-20 by DrakzOscar the grouch costume by skiracer9xT-rex Roof Topper by hirerobThird PrizeThese 10 projects will win one year magazine subscriptions to the authors' choice of Make (digital or print version), Craft (digital or print version), or ReadyMade.Biohazard Halloween Candy by praguequestCoke Can Birdman by adrianFun with UV by TetranitrateGodzilla/T-Rex Costume by creatropeHan Solo 'En quesoed' en carbonite by GregDDCHaunted Flicker Light Adapter by infinitiyOperation - The Halloween Costume: TAKE 3 by NavySWO91Remote Power Control For Battery Powered Devices by pronteonStar Wars Cake (Mustafar) by CementTruckSuper quick last minute Squid costume by Tool Using AnimalHonorable MentionThere are enough patches so that each of the remaining projects entered will receive an Instructables patch! Again, it was really tough judging so many awesome projects. My Halloween was great and it looks like you had a wonderful Halloween too.Thanks to everyone to who entered and to the people who helped judge the challenge, especially the winners of the September Project contest and Magnet Challenge who helped judge: arwen, canida, g0pher, ian, KoolKat, numberandom, pronteon (who wasn't allowed to vote for his own), rachel, trebuchet03, and vatosupreme (who wasn't allowed to vote for his own).Original Halloween contest Instructions here.

Posted by ewilhelm 11 years ago

Instructables Podcast 003: Spring Cleaning

Would you like some advice on a project your working on? Perhaps you'd like a few ideas from a new source? You can comment here or email us at howdoi@instructables.com This week we didn't receive any questions, but that's not going to stop us. After spending several hours in the forums, I found twenty questions and let Jake pick numbers at random to see what we'd talk about. It was a lot of fun, but we prefer questions from all of you, so please don't be shy. You can listen to or download the episode below, listen over at archive.org or check it out at our homepage: download Resources: 12 - Remote Controlled LED -Field of Florescent Tubes -XBee's don't connect to the internet, they communicate with other XBee's. -An Ethernet Shield however, can do that! 04 - Automatic Electronic Cat Tail -Necomimi Brainwave Cat Ears -Shippo A cat tail that neither of us knew about when we were doing our talk. -EEG -ECG -DIY versions of EEG and ECG 18 - Gradually Brightening Alarm Clock -There's a few really good examples of this already being done. 05 - Solar Watch Winder -I found two separate videos to demonstrate how watch winders actually work. -Two homemade watch winders -A discussion on Sparkfun's forums on how to make a watch winder. 13 - Shoe Carousel -Something we didn't even think about -Perhaps you'd like to see a patent. -You could also see how other systems are made, and see if you can repurpose them for yourself. 16 - Homemade Air Brush -A couple of homemade airbrushes. -How Atomizer Nozzle's work 08 - Fireplace Soot -Creosote 17 - Ball of flame -Poofer -Flash Cotton/Nitrocellulose -Penn and Teller talking about danger in magic (link contains strong language). -Vortex Fire Ball

Posted by StumpChunkman 5 years ago

Halloween Decorations

Get started on your haunted houses with some help from these Halloween Decorations. If ideas of how to turn your humble abode into a monstrous lair aren't running through your brain, then it's time to start! There are kids to be scared! Fun to be had! Get to it!Make something awesome, document it, and be sure to enter it into our DIY Halloween Contest!Also see: Halloween Pumpkin Carving Halloween Costumes Halloween for Kids Halloween Makeup Halloween Party Halloween Masks Pirate Cannon - A working replica of a naval cannon that fires pneumatically by Part Time Chef.com Complete your pirate look with a cannon that makes noise and fires tissue to impress kids and neighbors. How to build a Five Foot Tall Jacob's ladder by ewilhelm Every mad scientist needs one of these. Without one an evil underground lair is more like a den in need of a good cleaning. Laser Vortex by mever Smoke and lasers always work well together.Keep the laser moving to create a cool and distorted effect. Make a cool hologram illusion! by NK5 Make a skull hover in mid-air! Halloween decor werewolf head by missmonster Need to convince anyone that last year's Halloween was more intense? Just put this trophy on the wall. Solid-state Halloween controller and how to build a Haunted House by ewilhelm For the more advanced spooksters you should look to this guide for makign Halloween a little more high tech. Rotoff the Deadnose Reindeer by PaHalloweenFreak At first glance it looks like Santa came early. Look closer and you'll see that he's still stuck, and rotting, on his mission from last year. How to convert an old swingset into a guillotine prop for Halloween by Strapped-4-Cache The little ones have ditched the swingset and so it's time to put it to a nobler, and nastier, cause. Build a pneumatically actuated Yeti in a cage for a Halloween Haunted house by ewilhelm This li'l yeti is stuck in a cage and none too happy about it! At the push of a button he'll leap at any Trick or Treater who comes by. How to Build a Spooky Working Drawbridge with Sounds and Light by rjtodd13 Set the mood early with a killer entrance. Or maybe just use this for your own cult when you get around to starting it. Either way.

Posted by fungus amungus 9 years ago

Web 2.0 Expo Ignite Talk: Budding engineers design, build, and share their rubberband-powered creations on Instructables

On Sunday, April 15th at the Web 2.0 Expo Ignite session, Christy gave a great 5-minute talk titled "K'Nex Guns: Open-Source Hardware on Instructables: Everyone wants open-source hardware, but how do we get there? A group of K'Nex gun-building kids has actually done it on Instructables; I'll explain how." It was fun, people liked it, and she was asked to give it again today during the Wednesday Keynote presentations of the Web 2.0 Expo.In light of tragic events at Virgina Tech, we wanted to reaffirm our message and ensure that no one mistakes it as glorifying violence. The community that has formed around rubberband-powered K'Nex guns is a positive community. They are using their energy to build, document, collaborate, and share their ideas. They help, support, and encourage each other. They innovate on each others designs, and are meticulous about sharing the credit. These are great qualities we respect and encourage. So, we ask you to look beyond the surface and past the rubberband-powered guns to what's beneath. The users' gun fascination will fade with age, but the underlying positive qualities instilled by this community will not. The skills they're building here are exactly those required for a successful engineer, and for a responsible, mature member of the innovation community. We're against violence, but for innovation and design and creativity.One of the chief reasons we started Instructables was because we saw a community growing and thriving around open-source designs for kitesurfing. The K'Nex community is very similar and grew organically, so we wanted to highlight it and share our insight into it. Check out the slides from Christy's talk, here in the attached PDF, and links to some of the things mentioned:The longer user-innovation talk that this talk is based on.KILLERK's K'NEX GUNtoulvus's Making 3d knex models using mlcadmepain's knex tripwire, huge knex crossbow, and XW30K 8-1/2 cm shot ShifleMost Innovative K'nex Gun Design Contestoodalumps's Knex Machine GunTrainman 2000's The VORTEXInnovative Knex Guns groupNo guns K'Nex groupThe K'Nex projects are impressive and inspiring, but Instructables is the platform for for a wide variety of great projects and ideas. Check out some of the other projects on our site: We have other great communities building around bikes, boat building, homemade gifts, micro-controllers, recipes, recycled materials, and many more. Join in, learn something, and share your knowledge with the community. Enjoy your time here on Instructables.Added: Thanks to Fumi Yamazaki for letting me link to her video, which includes a brief hello to her Japanese audience (taken at the end of the conference) then a little bit of my talk

Posted by ewilhelm 11 years ago

Physics puzzle games- Auditorium, World of Goo and Crayon Physics

I really like puzzle games. I've played two that are really addictive and beautifully made, and found another that looks great.AuditoriumAuditorium has a free on line demo. I've played through the levels a few times. The full game hasn't been published yet.The screen has a stream of light particles flowing into it. You have one, or more, buttons that will affect the path of the particles: like one that bends the light stream to the right, or one that pulls it into a vortex. You move the buttons around to steer the stream into boxes that are scattered around the screen. There are many particles in the stream, and by careful placement of the buttons, you can split them into different paths. When you hit the boxes with light particles a new group of instruments join a symphony you hear. The goal is to get all of the instruments playing.Some levels have areas that will change the color of the light particles as they pass. Some of the music boxes are different colors, and you will have to route the light particles through the color changer before you send them it into the box. Try it out, the free online demo will make it very clear. I didn't even look at the directions. It's easy to find your way as you go. I love a game like that.PlayAuditorium.comWorld of GooIn World of Goo, you have to stick living gooey balls together to make lattice and build some kind of structure (tower, bridge, rope, ...) that allows the gooey balls to reach the end of a pipe that sucks them up. The Gooey structures are not stiff. If you don't build your structure carefully it will bend and can collapse under its own weight. It is a 2D game with a comic book style to the graphics. There is also a level designer and an online community where you can share new levels. I haven't experimented with these yet - I'm still working through the levels that came with the game.There is a downloadable demo for both PC and Mac. There is also a WII version for sale.It is drawn and designed beautifully. Totally addictive.2dboy.comCrayon PhysicsI haven't played this yet but it looks really great.The graphics look like they were drawn by a 5 year old with a box of crayons. When you get to a level, it presents a drawn scene with a star and a ball (it's actually an apple. Must be a tribute to Newton) somewhere in it. You have to draw some kind of mechanism, or ramp, or some objects, or... As you are drawing, the objects develop mass.Everything you draw then reacts with gravity. You have to harness the momentum you get from everything dropping to the ground in order to push, throw, drop or guide the ball so it hits the star.Look at the video it is self explanatory. CrayonPhysics.com

Posted by SFHandyman 9 years ago


**THIS CONTEST GOES FROM SEPTEMBER 1ST-OCTOBER 1ST. JUDGING LASTS FROM OCTOBER 1ST TO OCTOBER 15TH.** Hello K'nexers!      A few other K'nexers and I have been discussing the idea of having a Nerf-K'nex themed contest after the main Rods and Connectors contest was over. We wanted it to combine Nerf and K'nex in a way that would be useful to both Nerfers and K'nexers.             This is a contest for K'nexers and Nerfers to build Nerf-related K'nex creations. Entries can be K'nex guns that shoot Nerf darts, K'nex guns based off of Nerf guns, or both. All entries related to these things will be accepted.       TO ENTER, BUILD A NERF-RELATED K'NEX GUN AND POST IT IN A GOOD QUALITY INSTRUCTABE. PLEASE POST A LINK TO YOUR GUN BELOW TO OFFICIALLY ENTER. ----------------------------------------------------------------------------------- Rules: -All entries must be K'nex versions of Nerf guns, or Nerf dart shooting K'nex guns-or both -Pictures of Nerf gun replicated (if any) must be included. They can be from any source. -Any kind of K'nex or Nerf ammo is allowed. (Oodammo, rods, connector ammo, finnammo, wheels, gears, vortex disks, elite darts, streamline darts, suction darts, tagger darts, whistler darts, micro darts, and mega darts). --------------------------------------------------------------------------------- Judging rules: -Judges can enter if they want, but their entries will be judged by another judge. -Entries will be spilt up among judges (if there are a lot of entries). -Judges will focus on the following points when rating entries: -Picture quality.        -Nerf related?        -Does it look like the real gun?[for replicas]/shoot darts at normal Nerf range (10-30 ft/3.048m-9.144m)? [for dart-shooters] -choose one or the other if it has both. -Range+accuracy? -Visual appearance? -Overall quality? (Built with care, or just thrown together?) Judges will rate entries on a 1-10 scale for each focus. Highest score wins. Maximum score is 60 points. Scores will be reported in the comments section of each entry. They will be compiled at the end of the 6-week period. *All judges names are confidential. There are almost ten. ----------------------------------------------------------------------------------- Prizes: -Highest score; Grand Prize: Patch and/or sub from each judge, and a 2-year Pro membership. -Next three highest scores: 1st prize: sub from each judge, 1-year pro membership, patch from me. -Next three highest scores: 2nd prize: sub from each judge, 3-month pro membership. *There is no voting in this contest. -------------------------------------------------------------------------------- I really hope this works out! If you have any questions feel free to ask or PM nerfrocketeer! {Pictures-Excluding Intro} These are examples of things you can enter. 1) My K'nerf Jolt 2) My K'nerf Reflex 3) My K'nerf gun, the Thing 4) Blue Mullet's Nerf Stampede 5) Metalsonic's Zombie Slayer (like a Nerf ZombieStrike Sledgefire) *Special thanks to Mike for his help and prizes. We K'nexers/Nerfers are NOT affiliated with Nerf, Hasbro, or K'nex. 

Posted by nerfrocketeer 4 years ago

Amazon.com® and Instructables Science Fair Results!

Amazon.com® and Instructables are pleased to announce the winners of the Science Fair! The entries were sweet, and I personally learned quite a few new things. Check out all the projects here.Grand PrizeThe grand prize winner for will receive a USD $1,500 Amazon.com gift certificate, a custom laser-etched Leatherman Juice S2 multi-tool, and an Instructables Robot t-shirt.The Rubens' Tube: Soundwaves in Fire! by yourtvliesFirst PrizeEach first prize winner will each receive a USD $250 Amazon.com gift certificate, a custom laser-etched Leatherman Juice S2 multi-tool, and an Instructables Robot t-shirt.Build an antique style crystal radio by OhmWiimote Rubens Tube: Control Fire With Sound! (And a Nintendo Wiimote!) by ScaryBunnyManKitchen laboratory II: The CO2 trap by syribiaThe Hilsch vortex tube by thecheatscalcRunners UpThe runners-up will each receive a USD $25 Amazon.com gift certificate, an Instructables patch, and stickers.A simple mechanical resonance demonstrator by 5VoltHow to make plastic by aaPreparing your own thin layer chromatography plates (and then using them) by allanf0Make a Voltage Controlled Resistor and Use It by BioteleElectromechanical Transducer Out of a Polystyrene Conical Section! by BookburnMake Potato Plastic! by Brandon121233The Bio-Battery - Power for the future. (So easy a 10 year old can do it.) by chowdeshellMotor Speaker by guyfrom7upHow to make air muscles! by HonusMeasure the drag coefficient of your car by iwilltryBarbie Doll Electric Chair Science Fair Project! by jessyratfinkMake an Evaporative Terra Cotta Beer Chiller by jolshefskyBe a scientist: make your own force meter. by Kiteman8X10 foldable pinhole camera by lennybBuilding a better Guinea and Feather by Luke LuckGrowing Mushrooms: PF Tek by nakKelvin's Thunderstorm - Create lightning from water and gravity! by NK5Be a Scientist: Learn about Triboluminescence (or Lightning in your by RedNeckOreoLet's go green! Build a Solar Powered Parabolic Cooker! by WeissensteinburgGeodesic Dome Greenhouse by yes2techFamily CollaborationThese collaborating families will receive a matched set of Instructables Robot t-shirts and an acrylic Robot plaque laser-engraved with their names!The Bio-Battery - Power for the future. (So easy a 10 year old can do it.) by chowdeshellLaunch it: the Huffin' Hoopster by KitemanAll winners should watch their inboxes for a private message with prize-claim instructions.The following Instructables were rated high enough to be runners-up, but the authors already had a winning entry:Hack The Spy Ear and Learn to Reverse Engineer a Circuit by BioteleBuild a solar hot dog cooker by iwilltryMeasure the specific heat of water and other fluids by iwilltryBe a Scientist: map your skin by KitemanThe Chaos Machine (Double Pendulum) by Luke LuckKitchen laboratory: Proteins and Cheese making by syribiaMake Rheopectic slime in less than 15 minutes! (It is not Oobleck) by syribiaGive a big round of applause to our awesome judges who spent hours going through each project:Bill Burkland, CameronSS, canida, dan, dave spencer, ewilhelm, fungus amungus, jeffkobi, KaptinScarlet, lebowski, noahw, Peanut, turkey tek, viron, and zieak.From complete voting results, go here.Amazon, Amazon.com and the Amazon.com logo are registered trademarks of Amazon.com Inc. or its affiliates.

Posted by ewilhelm 10 years ago

Letter from the Editor: The Perfect Gift

Is it just me, or does it seem like time speeds up around the holidays? It doesn’t matter where I’ve been in life, time seems to enter a sucking vortex towards the end of the year. Every year I have plans to be more clever, more efficient, more thoughtful when it comes to the holidays, and each year I hear myself getting snappier and more impatient with the demands made upon me. “A Christmas list? I don’t have time to think about what you could give me to make my life easier!” That’s right, I’m an ungrateful troll. So in an attempt to keep this holiday-troll at bay, I make lists. I gather supplies. I get excited about what I can make for friends and family, and I set out to learn whole new skill sets to accomplish my goals. This year, a laser-etched arduino-powered cribbage board with hand-carved pegs! Knit socks in decadent colorways for everyone in the family! Infused liqueurs with home-grown fruits and herbs! But let’s face it, last year, I taught myself crochet so I could make a friend a beautiful sampler afghan. It’s almost done! It’s right next to half a sock I started knitting the year before. Oh, and I don’t grow fruit. Still, every year I pride myself in how this year I will make simple gifts for family and friends. I will eschew consumerism! I will not fall prey to deep discounts and crowded malls. I will not find myself waiting by door to accept delivery. And yet, come December 24, you’re likely to find me trying to hide my face in the endless queue at whatever store is still open at midnight, arms rammed full of manufactured goods that no one really needs or will remember, promising myself that next year I will start in May! Let’s get real. I didn’t start in May. I will probably never start in May. But maybe one day, I will learn how to think mindfully about the holidays and what they mean to me. I will think about my loved ones and what they mean to me. I will simplify and know that it is enough. I will learn that it is for the best of everyone that I find time to breathe and to let go. One thing no one wants for the holidays is a cranky troll – I have at least learned that. To be honest, I don’t remember the gifts I receive from year to year. What I remember is the time I get to spend with friends and family. So this year I will try to make myself a simple gift: the gift of time. Time away from a computer, away from responsibility, away from my self-imposed pressures. Time to spend with my loved ones. After all, isn’t that the best gift we can give? Ok, I’m still going to make something for everyone I can. I mean, c’mon, it’s what I do! But reflecting on this helps me remember the point. So how do you handle the holidays?

Posted by scoochmaroo 7 years ago

Top 50 Instructables of 2007 Ranked by Number of Comments

This is the second in a series of data-analysis posts. Check out the first here. I love statistics, analysis, and raw data and so thought I'd share some of the really cool stuff with you. Thanks to trebuchet03 for helping with this and actually crafting the queries. Here are the Instructables published in 2007 with the greatest number of comments (I know the year isn't over yet, but we're close enough):1. Laser Flashlight Hack!! - 1,2292. Shutdown Your School! - 5003. morretti SR-4 knex recon kit - 4994. GORKEM'S KNEX SNIPER RIFLE - 3925. XW30K 8-1/2 cm shot Shifle - 3586. Easy to Build Desk Top 3 Axis CNC Milling Machine - 3497. Knex Sniper Rifle - 3398. K'nex pump action rifle code:OSNJCKMA2 - 3149. 25MM Pneumatic Sniper Rifle - 31210. mepain's sniper rifle - 30911. Invisible Book Shelf - 28612. Barbie Doll Electric Chair Science Fair Project! - 28213. knex rifle - 27914. Make an awesome Harry Potter wand from a sheet of paper and glue gun glue - 27015. Mouse Mouse! - 25616. The VORTEX - 23317. FREE Hidden Electricity! - 22518. Mykhailo's L96 - 22519. Gorkems K'nex Sniper Gun (The same gun as the origional, just easiyer to follow instructions) - 22120. Match Rocket - 21421. [https://www.instructables.com/id/How-to-softmod-your-xbox...for-FREE How to softmod your xbox...for FREE] - 21422. The Ice Bulb - 21323. Opening up a coke machine - 21024. How to Make a Three Axis CNC Machine (Cheaply and Easily) - 20725. How to perform your own Tongue Bifurcation - 20726. $5 Mini USB Fridge! - 20227. How to make a great Knex weapon Instructable - 20128. Laser Cutter Contest Update: Fewer Rules, More Time! - 19629. The K'nexecutioner 1.02 - 19430. How to get some revenge on the credit companies - 19431. Homemade Infrared Goggles! For Under $10 - 19332. Fake Virus!!! - 19233. semi automatic knex pistol - 19034. Creating a 3D effect with image editing software (GIMP or Photoshop) - 18935. Exploding Salt Explosives from Salt - 18936. Polyphasic Sleep - 18837. huge knex crossbow - 18538. Blu-Ray Laser Phaser! - 18239. How to Build a Robot - The BeetleBot - 18240. How to Clean Your Sinuses - 18141. Instructable: Keyboard System - 18042. How to roll a Joint ! (if you dont like it don't read it !!) - 17843. Red Impact - Perfect Duck's K'nex gun. - 17844. K'nex FN2000 - 17545. Knex Switchblade (Now Improved) - 17046. Ultimate Guide to Making a Cheap but Effective Aluminium Forge. - 16847. Be an Aeronautical Scientist: Make your Own Jet Engine for a few Pennies. - 16748. the desert buzzard knex gun - 16549. Danny's knex m4 carbine working modle - 16550. Using Paper, Resin, and Fiberglass to be the Master Chief! - 164

Posted by ewilhelm 10 years ago

Halloween: Angel Wings, Werewolf Costume, Jack-o-Lanterns

Sign-up for our newsletter here. Oct. 26, 2007 Welcome back! Our favorite holiday of the year is almost here and we're celebrating with a special newsletter! Here are some great Instructables to provide some inspiration for our DIY Halloween 2007 Contest. Be sure to take some photos or video of your creepy creations and enter to win some awesome prizes, including a trip to Maker Faire 2008! For those who are in the Bay Area in California, come by our Halloween Costume Ball tomorrow night! We want to see your costume! And for those who are near Boston, check out the Show & Tell at MITERSnext Friday, November 2. So what are you waiting for? Check out these Instructables and get started! How to make a pair of Angel Wings In this Instructable I will explain how to make a pair of wings which could be used to dress up as an angel, bird, or anything else with feathered wings!posted by T0BY on Oct 23, 2007 Realistic Werewolf Costume Create your own werewolf costume! Moving jaw, padded body, lots of fur!posted by missmonster on Oct 20, 2007 How to convert an old swingset into a guillotine prop for Halloween Reuse an old pile of lumber that used to be a wooden swing set for a nice prop for Halloween.posted by Strapped-4-Cache on Oct 14, 2007 Life-size Skeleton Pumpkin Carving! I've been doing these skulls for several years, but recently I got the idea that I could make a whole skeleton out of pumpkins.posted by mcraghead on Aug 21, 2007 Over $5,000 in prizes! How to Apply Elf Ears Want elf ears on your head? Then show this Instructable to a friend because you can't put them on yourself!posted by jforbess on Oct 12, 2007 How to make a cardboard costume helmet Helmets are usually one of the hardest and most expensive parts to make for a cool Halloween costume so here's a simple method using cardboard.posted by Honus on Oct 4, 2006 DIY Girl Pirate Costume HOW-TO Do you feel that the Girl Pirate Costumes you find in the stores are too expensive and not original? Well, make your own!posted by threadbanger on Oct 25, 2007 Solid-state Halloween controller and how to build a Haunted House Halloween is my favorite holiday, so every year I create some sort of a haunted house - all for the neighborhood kids, of course!posted by ewilhelm on Oct 1, 2006 Pirate Cannon - A working replica of a naval cannon that fires pneumatically Halloween has been a pirate theme around here for a while. I had the sword, I had the treasure chest, I needed a cannon. posted by Part Time Chef.com on Nov 4, 2006 Special FX: Almost-free Squirting Blood Effect This instructable will show you how to make a Swiffer WetJet mop into a sweet squirting blood effect. posted by that_one_guy on Jun 23, 2007 Tips for Halloween pumpkin pictures Carving a Jack-O-Lantern is fun, taking loving pictures of the spooky glowing face is even more fun. posted by ewilhelm on Oct 31, 2007 Win a free trip to Maker Faire 2008! Laser Vortex Use a laser pointer, small motor, and a mirror to create an effect similar to what you might see at Halloween Horror Nights but on a smaller scale and much cheaper.posted by mever on Oct 18, 2006 Be a Ghostbuster for Halloween! This is an over-the-top costume, but come Halloween it is oh sooo worth it. People go absolutely flippin' nuts when they see the whole getup.posted by Honus on Oct 4, 2006 Realistic Wound FX In this following you will see how to make a simple, yet realistic and reusable, latex wound effect on a tight budget. posted by Pull and Twist on Jul 17, 2007 Biohazard beer barrel A cheap and easy cooler that belches fog into your party. posted by zieak on Nov 1, 2006 T-Rex Rooftopper Make your own roof explode with this gigantic invader. posted by hirerob on Oct 31, 2006 Nazgul Mask for $15-20 This is a quick, 2-hour project I pieced together for one of my students who requested a Nazgul King mask for a production he was working on. posted by Drakz on Oct 27, 2006 How to build a Five Foot Tall Jacob's ladder This classic climbing arc completes any mad scientist's dungeon. Don't touch the electrodes: they're at 12 kV! posted by ewilhelm on Dec 13, 2005 Travelling Mexican Wrestling Ring If you're dressed as a wrestler, you need to wrestle. And if you need to wrestle, you need a ring to wrestle in. posted by rachel on Nov 19, 2006 Now go build something spookily awesome, and I'll see you next week! - Eric

Posted by lebowski 10 years ago

Yuri's Night 2008!

Calling all cosmonauts, inventors, dreamers, and explorers ...tickets for Yuri's Night Bay Area 2008 arenow on sale!http://yurisnightbayarea.netYuri's Night is back! We're bigger and better than everand we need your help to spread the word!Yuri's Night Bay Area2pm - 2am, April 12th, 2008NASA Ames Research Center, Moffett Field, CAThis year the San Francisco Bay Area will be home to the largest Yuri's Night celebration ever. At the NASA Ames Research Center over 8,000 people will join astronauts, artists, musicians, scientists and engineers to learn, celebrate, and pay tribute to our global space heritage; and to celebrate the anniversaries of the first human spaceflight and the first space shuttle mission. Yuri's Night Bay Area 2008 is a one-of-a-kind local community event: a perfect fusion of celebration and tribute, technology expo, Maker Faire, art exhibition, and music festival; all rolled into one. Yuri's Night Bay Area 2008 includes:- A mind-expanding series of speakers, including world-renowned video game designer WILL WRIGHT, creator of SimCity, SimEarth, The Sims, and many other games including his exciting upcoming game of life, evolution, and exploration: SPORE; NASA astrobiologist JONATHAN TRENT, leader of the new NASA G.R.E.E.N. team for green technology research; and SAUL GRIFFITH, head of an innovative new company seeking to harness high-altitude wind energy as a cheap alternative to coal: MAKANI POWER.- A TECHNOLOGY SHOWCASE featuring leading Bay Area green technology companies including CALCARS and TESLA MOTORS. Plus, dozens of art and science installations spanning everything from NASA research ROBOTS to the unveiling of the newest fire sculpture by the FLAMING LOTUS GIRLS.- DISCUSSIONS and FORUMS where event attendees will get the chance to take on some big questions surrounding Space Exploration, Radical Sustainability, and the Future of Humanity in our Festival of Ideas.- A world-class lineup of musical artists, ranging from the electronic breakbeat sounds of AMON TOBIN, TIPPER, and JOHN TEJADA to rockin' live performances by FREEZEPOP, PARTICLE, and the very special debut of TELSTAR, featuring PHIL LESH of the Grateful Dead.- Live performances of all kinds, from dance and acrobatics by CAPACITOR (San Francisco's ground-breaking interdisciplinary dance company) to aerial demonstrations featuring Yuri-Gagarin-era AEROBATIC AIRCRAFT.- ...and much, much more! Browse the partial list below!Tickets are available on-line for $40 (plus applicable fees). A limited number of tickets may be available for $50 at the door -- check the website for status. If you are interested in helping out at the event, please fill out the volunteer form on our website.We hope to see you there!- The Yuri's Night Bay Area TeamYURI'S NIGHT 2008 LINE-UPTALKS AND INTERACTIVE EXPERIENCES- NASA SCIENTISTS and ASTRONAUTS- A do-it-yourself SHOW AND TELL by INSTRUCTABLES- WILL WRIGHT, creator of SimCity, SimEarth, and the forthcoming Spore- NASA astrobiologist JONATHAN TRENT, leader of the new NASA G.R.E.E.N. team for green technology research.- A CUSTOM MUSIC INTERFACE CONTEST by CreateDigitalMusic- Leading Bay Area minds including SAUL GRIFFITH, head of MAKANI POWER- ...and MUCH, MUCH MORE!ART AND SCIENCE INSTALLATIONS- The unveiling of the newest work by the FLAMING LOTUS GIRLS- A variety of NASA RESEARCH ROBOTS AND AIRCRAFT- MASSIVE SCULPTURE by MICHAEL CHRISTIAN- VIDEO PROJECTION by KOSHO, CELESTINE STAR, and many others- Amazing water vortex effects by SUFFICIENTLY ADVANCED TECHNOLOGY- Large-scale kinetic art by SWARM- An art in space, space science, and sustainablity-themed S.T.E.A.M. DOCUMENTARY PROGRAM- A space- and sustainablity-themed DOCUMENTARY SCREENING DOME- ...and MUCH, MUCH, MUCH MORE!LIVE PERFORMANCES AND DANCE- CAPACITOR: Live aerial performance and dance- BAD UNKL SISTA: breathtaking costumes and dance-inspired performance- THE VONSTILT FAMILY: Gravity-defying stilt performances- A LIVE AEROBATIC DEMONSTRATION, featuring three unique Yuri-era airplanes flown by three of the best aerobatic pilots in the world.- ...and more!LIVE INSTRUMENTAL AND VOCAL MUSIC- TELSTAR (feat. Phil Lesh, Steve Molitz, and John Molo)- FREEZEPOP (Boston): indie synthpop / new wave- PARTICLE: instrumental space-disco-dance- BLVD w/ SOULEYE: hip-hop, house, & breaks- ZOE KEATING: avant garde looping cello- MJ GREENMOUNTAIN vs. YOSSI FINE: global fusion and afro-tribal funk- CHRISTOPHER WILLITS (12k, Ghostly Intl.): processed guitar soundscapes- GAMELAN X: the intergalactic 17-member percussive melodic marching troupe- LULACRUZA: Argentinan percussion, guitar, and vocals- THE SWEET SNACKS: Ghettotech and big beatELECTRONIC MUSIC- AMON TOBIN (Ninja Tune/Montreal)- TIPPER (UK, special twilight downtempo set)- JOHN TEJADA (LA/palette recordings)- LUSINE (Ghostly Intl., Seattle) : live set- SCUBA (Hotflush Recordings, UK)- DIGITONAL vs. POSTHUMAN (UK): with live violin- [A]PENDICS.SHUFFLE (LA): live set- DERU (Merck, LA): live set- TYCHO (Ghostly, Merck): live set- RANDOM RAB (El Circo): live set- MR. PROJECTILE (Merck): live set- DR. TOAST (False Profit) vs. GANUCHEAU: live

Posted by fungus amungus 10 years ago

Mac VS PC?

I'm posting this to share my experience and opinion of Mac's VS PC's. I welcome you to read and share your story. For many years I was a PC. I believed whole-heartedly that I needed Windows, and I needed Microsoft. Then I bought my last laptop. It wasn't cheap. I used it everyday for work and therefore it was important that it ran efficiently. Like many of you, I suffered from "blue screens" and on occasion a "crash". There were viruses and trojans and attacks from all places, you'd think I was engaged in war! Then the proverbial "last straw" occurred. I needed to upgrade into some new software, and I received a simple message that I needed to also upgrade the Windows Service Pack. Hmmm.... Seemed easy enough. (Been there. Done that.) So, off I went to download the SP (from a reputable source) and then "Success!"... I got a message that said "Successfully installed. Windows must restart to complete process". Hmmm... Ok... I pressed through the process to restart my machine and there it began.... The long and never ending cycle had started! My laptop shut down, started to boot and then upon seeing the (dare I say it?) Vista Start Up Screen, my laptop promptly repeated itself and began to reboot... o_0 ??? This went on for sometime... *anger growing*... NOTHING I did would stop this, or should I say NOTHING would START my laptop. It was forever entangled into a mysterious vortex of computer "Neverland". I was NOT impressed. I had to borrow another computer to do some research and found very little at the time to explain this conundrum. Then I tried Microsoft. I used their "so-called" online customer service department and was put in touch with someone who was younger than my oldest pair of shoes. He also couldn't speak English very well, so without being incredibly rude I requested another agent. Upon conversing with agent #2, I knew I was in trouble... (Was Agent #2 related to Agent #1???) ... o_0 ??? *shakes head* I will give credit to Agent #2. He was nice. He tried his hardest to suggest everything under the sun, but alas, we both concluded it was hopeless. The final bluescreen error number confirmed the toe tag on my machine. So I was left with having to reinstall the entire system and lose EVERYTHING on my laptop. *fuming mad now* Then it occurred to me that "Windon'ts" (as I affectionately call them now), opted not to provide me with necessary disks to reinstall their OS during my purchase. It seems that the cost of a CD has become so expensive for Microsoft that they are forced to leave it up to the consumer to fend for themselves. Clearly, they are suffering financially, No? When I rationalized this logic with Agent #2, he suggested that I purchase Windows 7 as it had just come out and was much better than Vista (No kidding.... *rolls eyes*). But why? Why prey-tell should I have to purchase anything? My laptop was only 14 months old (conveniently out of warranty) and may as well have been a pre-historic dinosaur as far as Agent #2 was concerned. So where did me and Agent #2 leave off? He suggested I "borrow" an installation disk from someone and reinstall windows vista and start over... *tics forming now...* He assured me that my "service call to Microsoft" would remain as "unsolved". (Oh btw, at this point we were regulars on the telephone). So my ONE LAST QUESTION to him was: "What assurance do I have, after reinstalling Vista and then the SP I need, that this problem won't just start again?" - His reply was, "Well, it shouldn't"... Straw officially broken. Now we come to my life with my new MacBook. Clearly much more expensive than a Windon'ts PC, but wait... Is it? Let's review. There are more "open-source apps" available to a Mac (meaning you get them for free), and in most cases I find they are the same if not better than the paid for MS version. The critical applications that I use everyday for work, installed fine and without issue. I also received "DISKS" from Apple. Apparently they can afford to give customers what they pay for.... Upon opening the box, I was running my new laptop within 5 minutes. Easy Peasy... The time alone that I save from all that aggravation is money in the bank. Do I miss anything? Yes, actually I do (or maybe I don't). What I miss out on are bluescreens, viruses, trojans, attacks, intrusions, crashes and all the other fun stuff I got to know and expect with a PC. So why tell all of you about this now? Well yesterday I noticed that the bottom of my MacBook had a slight bulge in the case. *Heart skipped a beat*. Then after some mild panic, with visions of my last ordeal swirling in my head, I went online in search of why, and found the answer within 5 minutes. Apparently this was something Apple became aware of and had a simple solution. Fill out a contact information form along with my serial number and I got a confirmation message. Not only would I receive an ENTIRELY NEW bottom to my MacBook, I would receive a full set of screws AND a screwdriver!!! All FREE OF CHARGE. NO SHIPPING FEES. COST ME NOTHING!!! *shocked* Now I was beaming. *ear to ear grin* I felt validated for my departure from PC. Then in some kind of absurd customer service universe, I received a knock at the door. My replacement parts had arrived!!! - Less than 24 hours later... *mouth gaping and eyes wide* So I thank you for reading this. I encourage you to share your opinions. If you don't know who I am. I am canucksgirl. I'm a Mac. Not a PC.

Posted by canucksgirl 6 years ago

Top 50 2008: Instructables

Yesterday we looked at the Top 50 commenters for 2008 and today we'll be looking at the numbers for the top 50 Instructables of 2008. Since there's no one way of declaring a list of Instructables, we created three top 50 lists. These cover Instructables in order of rating, pageviews, and comments. Instructables on these lists were all published in 2008.Let's go to the graphs and charts!Top 50 Instructables: Pageviews   Instructable Views 1   Body-Mod: Elf Ears 347738 2   Use your laptop as an Xbox/Xbox 360 "Wireless Adapter" on Windows XP/Vista, and Mac OSX 220780 3   Fix the Red Ring of Death! (without towels!) 177285 4   Laser cutter, start slicing stuff for under 50 dollars 159647 5   Run Backups on any Wii Without a Modchip 159408 6   How to build a 72Volt electric motorcycle 159261 7   How to make out 145713 8   Inverted Bookshelf 137198 9   Munny Speakers 124736 10   Awesome led cube 118293 11   Firefox Pranks! 117449 12   How to make an Iron Man Arc Reactor 116481 13   How to French Kiss 115958 14   How To: Make Bath Bombs 108287 15   Gift Ideas 107914 16   DIY USB "Hard Drive" 96588 17   Safely Shaving Your Pubic Hair 96144 18   WinXP Overhaul Guide: How to make it look like Vista, run like lightning, and stay productive, fast & smooth 94980 19   Laser Tattoo 94705 20   DIY Vinyl Wall Art 92752 21   How to refill a "disposable" Brita brand water pitcher filter with activated carbon. 89724 22   Make your own Roll-Up Keyboard 89558 23   Hidden USB Storage 86430 24   how to add EL wire to a coat or other garment 84340 25   Build a 60 Watt Solar Panel 82286 26   Grow a square watermelon 82275 27   LeGummies brick shaped gummy candies 81368 28   USB 80875 29   How to remove most of the seeds when cutting up a watermelon 80822 30   How to Make a TRON Style Lamp: The MADYLIGHT 80281 31   LED Cube 4x4x4 78936 32   Covert Spy Sunglasses 78633 33   Build a water mortar 77090 34   Super Nightvision Headset Hack! 76634 35   A better laptop stand for bed 76101 36   Amazing plasma globe tricks that you never knew before!!! 74842 37   How to get a Free Itunes Account (No Credit Card Needed) 74490 38   Make an iPod Video Projector 74026 39   Homemade Gifts 73478 40   Lasers 73242 41   Remote shutter trigger for Digital Cameras 72911 42   Ergonomic Laptop Stand Made From a Coat Hanger 72321 43   MAKE A HIGH VOLTAGE SUPPLY IN 5 MINUTES 71744 44   Protect Your Home with Laserbeams! 71387 45   Iron Man Helmet 71358 46   Get Big Money for Dead Batteries 70261 47   How to Put on a Condom 69805 48   How to make an Iron Man Mask 69617 49   How to build a 96-Volt Electric Motorcycle 68924 50   Nintendo Lunchbox 68164 Top 50 Instructables: Ratings   Instructable Rating 1   Build A Plasma Speaker 4.64 2   Build A Net Gun 4.62 3   Wall-E Robot 4.60 4   Sew your own Instructables Robot Plushie! 4.60 5   How to Make a Portable Game System 4.54 6   Build Your Own Butler Robot!!! - Tutorial,Photos, and Video 4.54 7   Electromagnetic Floater 4.52 8   LED Cube 4x4x4 4.50 9   LeGummies brick shaped gummy candies 4.49 10   DIY Vinyl Wall Art 4.49 11   5-minute Chocolate Cake 4.48 12   When a Phillips is not a Phillips! 4.48 13   Airgun with eXplosive air-Release Valve 4.47 14   How to Build a Robot - The BeetleBot v2 ( Revisited ) 4.45 15   How to Start a Business 4.45 16   Gandhi: 17' Tall Cardboard Avatar 4.44 17   turn signal biking jacket 4.44 18   Hidden USB Storage 4.44 19   Cyber/Steampunk Futuresque Sci-Fi Hand Gun 4.43 20   LED Chess Set 4.41 21   Build your own Electric Car! 4.41 22   LCS-1M - A Full-Featured, Low-Cost Hobby Oscilloscope 4.40 23   Build a World's Smallest Electronic Shocker! 4.39 24   Lego USB Stick 4.38 25   MAKE A PILLAR WITH A DECORATIVE CAPITOL AND BASE 4.38 26   EGG FLOWER VASE 4.38 27   Aliens Powerloader Halloween Costume 4.38 28   Munny Speakers 4.37 29   Giant 100mm LED 4.37 30   Coilgun Handgun 4.37 31   How to Thank Instructables 4.36 32   Guitar Tube Amp 4.36 33   How to get a Tshirt for GoodHart 4.34 34   Creepy Cobweb Shooter! 4.34 35   Grow Your Own Bioluminescent Algae 4.32 36   How to make a Portal Gun 4.31 37   how to add EL wire to a coat or other garment 4.30 38   Duct Tape Messenger Bag + Hardware 4.30 39   Firearm Safety: The "do's" and "don'ts" of enjoying guns safely. 4.29 40   The Stirling Engine, absorb energy from candles, coffee, and more! 4.29 41   Recycle Old Light Bulb 4.28 42   USB Batman Spotlight 4.28 43   Coffee table upgrade! 4.27 44   Steampunk Dystopian Sniper Rifle (Mercury Bow) 4.27 45   Building Small Robots: Making One Cubic Inch Micro-Sumo Robots and Smaller 4.27 46   How to grow flowers on a military base in Iraq 4.26 47   How to make your own LED lightbulbs 4.26 48   Iron Man Helmet 4.25 49   Cardboard/Fiberglass Halo 3 inspired Master Chief Costume 4.25 50   Build Halo Armor 4.25 Top 50 Instructables: Comments   Instructable Comments 1   Build a World's Smallest Electronic Shocker! 812 2   Knex Heavy Cannon 645 3   Awesome led cube 637 4   Simple Xbox 360 Rapid Fire Mod 591 5   Build A Plasma Speaker 494 6   DD-27 V2.75 compact AST rifle 454 7   WinXP Overhaul Guide: How to make it look like Vista, run like lightning, and stay productive, fast & smooth 453 8   The accidental pocket jet engine... 427 9   Scavenge free electronics, food, and help the environment 400 10   How to make your PSP "Better" or how to have more fun on a Sony PSP 379 11   Laser Tattoo 376 12   Amazing plasma globe tricks that you never knew before!!! 376 13   DSman195276's sidearm --updated-- v1.5 is here! 371 14   MAKE A HIGH VOLTAGE SUPPLY IN 5 MINUTES 363 15   Wall-E Robot 352 16   Knex Heavy Cannon v5 - Handheld 342 17   Fix the Red Ring of Death! 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Posted by fungus amungus 9 years ago

UV filtration in your fish tank or small fish pond

Year after year the topic "I have a fish tank" seems to go more out of control. What was once a hobby just to have some fish can now be a design feature both in your home and inside the tank. Realistic looking lasdscapes, optical illusions that make you think the tank is much bigger and the list goes on. But one thing that now always pops up is the must have thing of UV filtration. Or to be precise: UV-C sterilisation! Now, if we trust Wiki and our big water suppliers then UV-C will literally kill anything alive that comes into contact with. So of course it would be a good thing to have for your tank - or not? UV-C is very dangerous for your eyesight and quite harmful for your skin! Looking into a proper UV-C lamp without protection means you can go blind! Even good sunglasses might not have enough protection in the UV-C range, so only use them for additional protection but never without and glass between you and the lamp! Don't be a fool! Treat UV-C seriously! You would not look into the full sun with your sunglasses and would not expose your eyes or skin to a powerful laser, UV-C is to be treated the same way! Let's start by using some boring text to explain the concept a little bit. On a large scale special and quite powerful systems are used to treat our drinking or pool water. Here special UV-C lights with a wavelenghts of 260nm or below are used to shine through the water passing by. There are two key factors here. a) the wavelenght b) the water flow rate and the corresponding time the water is in contact with the UV light To ensure all bacteria, viruses, algae and other harmful organics are dead the water must circulate for long enough so even the last water molecule had a few seconds of exposure. All this only works good with "crystal clear" water for obvious reasons as otherwise the UV has to be even more powerful to pass through. Single cell organisms literally crack into pieces similar to being exposed to gamma rays, more complex cells like algae have their cell membranes damages and the DNA suffers as well causing reproduction loss and early death. Even some chemicals break down, most importantly here chlorine based substances. Differences within the UV-C range! If you bothered to check Wiki about the topic of UV-C you will already know that only certain wavelengths within this spectrum will actuall be powerful enough to do what we want it to do. And here is the first problem for us hobby users. Most cheaply advertised "sterlisation lamps" you find in places like Ebay are actually totally useless. Stating to be selling a UV-C light to sterilze your water in such a case is still not considered to be fraud though. Simply because it still does what it supposed to do, just very slow and with very little effect. Only the so called "short wave" UV-C range is powerful enough! To avoid loosing business during the times of the biggest hype in 20 years no seller will actuall state the available wavelengths. That means without this info anywhere you can be certain the advertised lamp is of little to no use. Even those advertised to be short wave UV-C might not be the real deal. However, if a decent manufacturer is behind the actual lamp used it is possible to check the datasheet for these performance figures - but again most cheap systems come with no-name lamps inside. Check the prices for a reputable UV-C light with the same lamp fitting, e.g. G23 and you will see it might cost more than your entire system. Ok, you have a poper short wave UV-C lamp or consider getting a canister filter with one in it.... Never, ever test your lamp without proper protection!!!!! UV-C will damage your eye within seconds! If you system or lamp does not provide a viewing port or shine through area then you have to place a piece of glass between you and the light! UV-C won't be able to penetrate normal window glass but will pass through quartz glass. Place the lamp in a box and cover with the glass. How make proper use of UV-C sterilisation... The replacement lights are quite expensive, so let's see how to get the most out of them. As said before exposure is the key factor so the flow rate of the UV system must match tank size and flow rate of your filter system. Canister filters with a build in lamp should be designed to match but I will tell you later what to look for ;) Most of us will prefer to have a in-line system if there is already a good canister filter at work, so I will focus on those and rop in solutions. If you compare in-line system you might notice that some quite small and low power units claim to allow for the same flow rates as for example 40W units. Some are fraud and just want to sell while others use simple physics to make the claim true. A good system will utilise an auger like "ramp" that forces the water to circulate around the tube many times - causing up to ten times longer exposure rates. Others create this sprial effect more like a vortex with some diverters and modified inlets. The later seems to be less efficient though with low power lamps. An in-line system should be on the outlet side of your canister filter so the best quality water will pass through it. A drop in solution should be used alone and without the existing normal filter pump you might have in there. Ok, got it, but how do I actually use it now? Despite common thinking a UV-C system should not run 24/7 like your normal filter. You really only need it to solve problems you should not have in a healthy tank! It is not a magical solution to make your underlaying problems go away ;) Let's start with the most common reason someone buys a UV-C system: An algae or bacterial outbreak causing greenish or milky water. If that developed slowly over a period of weeks then you would be better off to do a good clean of the tank and filter plus a decent water exchange. A few drops of meds will do the rest. And if you constantly get algae growing on your glass, ornaments and plants then your nutrient levels and water quality is not right anyway and needs a good check. But of course there is also the problem of light - too much for too long and unwanted gree appears everywhere. If in doubt reduce the light power, shade out natural light or reduce the on time for your lights. Having said that we now face the problem of a sudden outbreak after introducing new fish or plants. If you don't have a quarantaine tank chances are that sooner or later you get unwanted or even harmful guest into your tank. Here the UV-C will be beneficial, which is why a canister filter with build in light should have a seperate switch or power supply for the light. After an outbreak or while introducing new life into your tank the UV-C will remove a lot of the things that we don't want to bring along. For new life I leave the light on non stop for a week, that is for a small 4ft tank with 200 liters. To control an outbreak it depends on how bad it is. I assume here you can still see the back of your tank  but that the water either appears greenish or slightly milky from bacteria. As a personal thing I prefer to to remove and clean my filter material before treating a severe outbreak. Once done I fill the filter with a mix of activate carbon material and fine filter wool. Reason for this quite simple: The outbreak causing stuff is already in your filter material and will be a constant source of re-infection. And since breaking down all this bad stuff causes even more bad stuff to be produced as biological waste we want to discard it properly once done. Using just fine filter wool and activated carbon also reduces the flow rate bit if compacted ;) Now we can turn on the light and pump and forget about it for a while. It is not recommended to run UV lights on a timer as you want them on all time to prevent short lifespan and have ongoing treatment of the water. Good idea to take a picture at the same of a day from now on to compare and check results. After 3 days the water should definately be clearer, if not then either your filter material is packed too losse or the lamp is no good. Once the water appears to be clear do a readin test - take a newspaper behind the tank and check if the text is clear - blurry means the water is still not clean. You will reach a point where the water quality will not further improve as much as in the days before. This is the time where you discard or clean out to dry your filter material and put the original stuff back in. The activated carbon should be discarded of course. You cleaned filter material will now need a certain time to grow enough good bacteria to go back to the old performance. During this time you should still leave the light on. In most cases with enough fish and plants in the tank a week should be sufficient. After that you can leave the light off and keep the tank fit and healthy. Special case: Algae everywhere! Especially after getting a new plant you can end up with quite pesty algae growth. Be it these long ghost hair types or in a bad case the black stuff growing on plants, ornaments and the glass. I have even seen tanks with algae covering the entire bottom of the tank causing the gravel to look like carpet. Here I can only advise to set up a quarantaine tank for your fish. Then remove all infested material for manual removal and cleaning. Infested plants should be cut clean and what can be boiled should be boiled in water for a few minutes. Now start scrubbing in the tank with ongoing water replacements. I prefer to let everything settle over night without any bubbler or pump running. This way I can suck up a lot of sediment the next day. If you can remove all plants and fish you can now use hydrogen peroxide and add it to your tank water. But this is only feasable for small desktop tanks. Before using the UV as above to cure an outbreak you should consider all water one last time. Allow at least 2 weeks with ongoing water checks before adding plants back in and another week before placing your fish back in the tank. The week before adding fish should be used to monitor the plats for any signs of algae you might have missed - if you find any remove it! A week after the fish is back in you can turn off the UV light. Underwater UV-C light!? In most online stores you will find quite cheap UV lights to be advertised as underwater or in tank use. Although it might sound tempting you should be well aware of the dangers of using them. The glass of your tank will block the harmfull UV rays but the water surface won't, so either don't ever look at it or use proper sunglasses with real UV protection. Apart from the dangers to you these lamps are not just cheap in price but also cheaply produced. That means there is no way of telling how much or how little UV-C is produced. If they are good then you still need to know in what type of tank setup you can use them. As plants can tolerate a bit of UV a placement as far away from the nearest plant should do, especially if you can place a bubble wall betwenn light and plants. The fish is another thing as some seem to be unaware of the danger in their tank. This means they can get too close to the light but I have not found any articles explaining how harmful UV-C is to fish or their eyesight. I guess once your fish starts to bounce into everything you know... ;) My advise is to stay away from the idea of hanging a UV-C lamp in your tank, the risk for you and your tank is just not justified. If you need to go cheap then get two or thre of these lamps so you have spares. But use them externally ;) Meaning: Take a UV proof plastic container of small size and place the light in there. To be really safe tape the lid and all holes for the hoses with black tape. Place the container above the water level of your tank and if you only have an internal filter pump push a suitable sized hose into the outlet to feed into you canister. Check how high you pump can make it and place the outlet or overflow slightly below this level. When to change the light? If you made it all the way down here then you might already had the benefit of using light to "cure" your tank. Now we are faced with the high replacement cost for the lamp itself. Ususally only flouroscent tubes are used. It is always good to check after purchase what type of lamp and manufacturer (if there is one) was used. In some cases the system itself is like an inkjet printer: Just a cheap way to make you buy the consumables. Let's say you new in-line filter was priced at $100 to have a nice round number, some are cheaper some much more expensive. The lamp used might be an exotic type and not even be available easy, so before you buy your system check where you can get spares, not just the lamp of course. A replacement lamp can be as ceap as 20 bucks or cost even more than your system if you need to order it elsewhere. The quartz glass sleeve can break too meaning you then need a lamp and cylinder. Going with a reputable brand and paying a bit more certainly helps to get spares in the future. Let's just assume you either got your system in bulk due to the price of replacement lamps or can get them at a reasonable price. UV-C lamps are not like your normal flouroscent light tubes you have around or maybe even on top of your tank. Consider them like the tubes used in the now unhealthy tanning beds. After a certain amount of time they no longer produce enough of the short wave UV light that we need. As you can't see it and most of us won't have the means to specifically measure it we have to trust manufacturers recommendations. For most good brands the numbers are the same: 8000 hours max. Considering the costs it does make sense to keep written track of the usage. Not too hard since we won't use them like normal lights but instead have them on for a week or more without turning them off. I recommend to have a replacement at hand long before you need it. A lamp can fail premature, crack or simply burn out. The 8000 hours are based on 24 hour usage, so one day on, one day off. This could mean for us the lifetime can be slightly longer but I would not go over 9000 hours. As a rule of thumb: If the water does not show good signs of getting clear on day thre the lamp is due.

Posted by Downunder35m 9 months ago

: Arduino + Adafruit wave sheild + IR + Keypad sound board

Hi , was wondering if you could point me in the right direction I'm very new to Arduino I built last year a simple board with adafruit wave shield and added a simple 12 digit key pad to play 12 sounds + power up I have got the codes for the KEYES IR receiver so know the IR is correctly connected and library loaded im trying to integrate the IR code so can change the sounds by IR remote ideally with option of the buttons (if have to loose the buttons and just use remote that's fine) have copied the code below for how it works now just buttons   I found some code for Cylon Pumpkin that works great with just the remote but would also like to integrate the 12 digit keypad Thank you in advance for any help or pointers you can suggest Richard CODE FOR 12 DIGIT BUTTON PRESS /* ADAVOICE is an Arduino-based voice pitch changer plus WAV playback. Fun for Halloween costumes, comic convention getups and other shenanigans! Hardware requirements: - Arduino Uno, Duemilanove or Diecimila (not Mega or Leonardo compatible). - Adafruit Wave Shield - Speaker attached to Wave Shield output - Battery for portable use If using the voice pitch changer, you will also need: - Adafruit Microphone Breakout - 10K potentiometer for setting pitch (or hardcode in sketch) If using the WAV playback, you will also need: - SD card - Keypad, buttons or other sensor(s) for triggering sounds Software requirements: - WaveHC library for Arduino - Demo WAV files on FAT-formatted SD card This example sketch uses a 3x4 keypad for triggering sounds...but with some changes could be adapted to use several discrete buttons, Hall effect sensors, force-sensing resistors (FSRs), I2C keypads, etc. (or if you just want the voice effect, no buttons at all). Connections: - 3.3V to mic amp+, 1 leg of potentiometer and Arduino AREF pin - GND to mic amp-, opposite leg of potentiometer - Analog pin 0 to mic amp output - Analog pin 1 to center tap of potentiometer - Wave Shield output to speaker or amplifier - Matrix is wired to pins A2, A3, A4, A5 (rows) and 6, 7, 8 (columns) - Wave shield is assumed wired as in product tutorial Potentiometer sets playback pitch. Pitch adjustment does NOT work in realtime -- audio sampling requires 100% of the ADC. Pitch setting is read at startup (or reset) and after a WAV finishes playing. POINT SPEAKER AWAY FROM MIC to avoid feedback. Written by Adafruit industries, with portions adapted from the 'PiSpeakHC' sketch included with WaveHC library. */ #include #include SdReader card; // This object holds the information for the card FatVolume vol; // This holds the information for the partition on the card FatReader root; // This holds the information for the volumes root directory FatReader file; // This object represent the WAV file for a pi digit or period WaveHC wave; // This is the only wave (audio) object, -- we only play one at a time #define error(msg) error_P(PSTR(msg)) // Macro allows error messages in flash memory #define ADC_CHANNEL 0 // Microphone on Analog pin 0 // Wave shield DAC: digital pins 2, 3, 4, 5 #define DAC_CS_PORT PORTD #define DAC_CS PORTD2 #define DAC_CLK_PORT PORTD #define DAC_CLK PORTD3 #define DAC_DI_PORT PORTD #define DAC_DI PORTD4 #define DAC_LATCH_PORT PORTD #define DAC_LATCH PORTD5 uint16_t in = 0, out = 0, xf = 0, nSamples; // Audio sample counters uint8_t adc_save; // Default ADC mode // WaveHC didn't declare it's working buffers private or static, // so we can be sneaky and borrow the same RAM for audio sampling! extern uint8_t buffer1[PLAYBUFFLEN], // Audio sample LSB buffer2[PLAYBUFFLEN]; // Audio sample MSB #define XFADE 16 // Number of samples for cross-fade #define MAX_SAMPLES (PLAYBUFFLEN - XFADE) // Remaining available audio samples // Keypad information: uint8_t rows[] = { A2, A3, A4, A5 }, // Keypad rows connect to these pins cols[] = { 6, 7, 8, 9 }, // Keypad columns connect to these pins r = 0, // Current row being examined prev = 255, // Previous key reading (or 255 if none) count = 0; // Counter for button debouncing #define DEBOUNCE 10 // Number of iterations before button 'takes' // Keypad/WAV information. Number of elements here should match the // number of keypad rows times the number of columns, plus one: const char *sound[] = { "Crashing" , "Damaged", "InFlight" , "PowerUp" , // Row 1 = Darth Vader sounds "Brkdown3" , "Brkdown2" , "Brkdown" , "PowerUp" , // Row 2 = Godzilla sounds "Landing", "drain" , "Shutdown" , "PowerUp" , // Row 3 = Dug the dog sounds "Silent", "TakeOff", "Vortex" , "PowerUp" , // Row 4 = Cartoon/SFX sound "PowerUp" }; // Extra item = boot sound //////////////////////////////////// SETUP void setup() { uint8_t i; Serial.begin(9600); // The WaveHC library normally initializes the DAC pins...but only after // an SD card is detected and a valid file is passed. Need to init the // pins manually here so that voice FX works even without a card. pinMode(2, OUTPUT); // Chip select pinMode(3, OUTPUT); // Serial clock pinMode(4, OUTPUT); // Serial data pinMode(5, OUTPUT); // Latch digitalWrite(2, HIGH); // Set chip select high // Init SD library, show root directory. Note that errors are displayed // but NOT regarded as fatal -- the program will continue with voice FX! if(!card.init()) SerialPrint_P("Card init. failed!"); else if(!vol.init(card)) SerialPrint_P("No partition!"); else if(!root.openRoot(vol)) SerialPrint_P("Couldn't open dir"); else { PgmPrintln("Files found:"); root.ls(); // Play startup sound (last file in array). playfile(sizeof(sound) / sizeof(sound[0]) - 1); } // Optional, but may make sampling and playback a little smoother: // Disable Timer0 interrupt. This means delay(), millis() etc. won't // work. Comment this out if you really, really need those functions. TIMSK0 = 0; // Set up Analog-to-Digital converter: analogReference(EXTERNAL); // 3.3V to AREF adc_save = ADCSRA; // Save ADC setting for restore later // Set keypad rows to outputs, set to HIGH logic level: for(i=0; i pinMode(rows[i], OUTPUT); digitalWrite(rows[i], HIGH); } // Set keypad columns to inputs, enable pull-up resistors: for(i=0; i pinMode(cols[i], INPUT); digitalWrite(cols[i], HIGH); } while(wave.isplaying); // Wait for startup sound to finish... startPitchShift(); // and start the pitch-shift mode by default. } //////////////////////////////////// LOOP // As written here, the loop function scans a keypad to triggers sounds // (stopping and restarting the voice effect as needed). If all you need // is a couple of buttons, it may be easier to tear this out and start // over with some simple digitalRead() calls. void loop() { uint8_t c, button; // Set current row to LOW logic state... digitalWrite(rows[r], LOW); // ...then examine column buttons for a match... for(c=0; c if(digitalRead(cols[c]) == LOW) { // First match. button = r * sizeof(cols) + c; // Get button index. if(button == prev) { // Same button as before? if(++count >= DEBOUNCE) { // Yes. Held beyond debounce threshold? if(wave.isplaying) wave.stop(); // Stop current WAV (if any) else stopPitchShift(); // or stop voice effect playfile(button); // and play new sound. while(digitalRead(cols[c]) == LOW); // Wait for button release. prev = 255; // Reset debounce values. count = 0; } } else { // Not same button as prior pass. prev = button; // Record new button and count = 0; // restart debounce counter. } } } // Restore current row to HIGH logic state and advance row counter... digitalWrite(rows[r], HIGH); if(++r >= sizeof(rows)) { // If last row scanned... r = 0; // Reset row counter // If no new sounds have been triggered at this point, and if the // pitch-shifter is not running, re-start it... if(!wave.isplaying && !(TIMSK2 & _BV(TOIE2))) startPitchShift(); } } //////////////////////////////////// HELPERS // Open and start playing a WAV file void playfile(int idx) { char filename[13]; (void)sprintf(filename,"%s.wav", sound[idx]); Serial.print("File: "); Serial.println(filename); if(!file.open(root, filename)) { PgmPrint("Couldn't open file "); Serial.print(filename); return; } if(!wave.create(file)) { PgmPrintln("Not a valid WAV"); return; } wave.play(); } //////////////////////////////////// PITCH-SHIFT CODE void startPitchShift() { // Read analog pitch setting before starting audio sampling: int pitch = analogRead(1); Serial.print("Pitch: "); Serial.println(pitch); // Right now the sketch just uses a fixed sound buffer length of // 128 samples. It may be the case that the buffer length should // vary with pitch for better results...further experimentation // is required here. nSamples = 128; //nSamples = F_CPU / 3200 / OCR2A; // ??? //if(nSamples > MAX_SAMPLES) nSamples = MAX_SAMPLES; //else if(nSamples < (XFADE * 2)) nSamples = XFADE * 2; memset(buffer1, 0, nSamples + XFADE); // Clear sample buffers memset(buffer2, 2, nSamples + XFADE); // (set all samples to 512) // WaveHC library already defines a Timer1 interrupt handler. Since we // want to use the stock library and not require a special fork, Timer2 // is used for a sample-playing interrupt here. As it's only an 8-bit // timer, a sizeable prescaler is used (32:1) to generate intervals // spanning the desired range (~4.8 KHz to ~19 KHz, or +/- 1 octave // from the sampling frequency). This does limit the available number // of speed 'steps' in between (about 79 total), but seems enough. TCCR2A = _BV(WGM21) | _BV(WGM20); // Mode 7 (fast PWM), OC2 disconnected TCCR2B = _BV(WGM22) | _BV(CS21) | _BV(CS20); // 32:1 prescale OCR2A = map(pitch, 0, 1023, F_CPU / 32 / (9615 / 2), // Lowest pitch = -1 octave F_CPU / 32 / (9615 * 2)); // Highest pitch = +1 octave // Start up ADC in free-run mode for audio sampling: DIDR0 |= _BV(ADC0D); // Disable digital input buffer on ADC0 ADMUX = ADC_CHANNEL; // Channel sel, right-adj, AREF to 3.3V regulator ADCSRB = 0; // Free-run mode ADCSRA = _BV(ADEN) | // Enable ADC _BV(ADSC) | // Start conversions _BV(ADATE) | // Auto-trigger enable _BV(ADIE) | // Interrupt enable _BV(ADPS2) | // 128:1 prescale... _BV(ADPS1) | // ...yields 125 KHz ADC clock... _BV(ADPS0); // ...13 cycles/conversion = ~9615 Hz TIMSK2 |= _BV(TOIE2); // Enable Timer2 overflow interrupt sei(); // Enable interrupts } void stopPitchShift() { ADCSRA = adc_save; // Disable ADC interrupt and allow normal use TIMSK2 = 0; // Disable Timer2 Interrupt } ISR(ADC_vect, ISR_BLOCK) { // ADC conversion complete // Save old sample from 'in' position to xfade buffer: buffer1[nSamples + xf] = buffer1[in]; buffer2[nSamples + xf] = buffer2[in]; if(++xf >= XFADE) xf = 0; // Store new value in sample buffers: buffer1[in] = ADCL; // MUST read ADCL first! buffer2[in] = ADCH; if(++in >= nSamples) in = 0; } ISR(TIMER2_OVF_vect) { // Playback interrupt uint16_t s; uint8_t w, inv, hi, lo, bit; int o2, i2, pos; // Cross fade around circular buffer 'seam'. if((o2 = (int)out) == (i2 = (int)in)) { // Sample positions coincide. Use cross-fade buffer data directly. pos = nSamples + xf; hi = (buffer2[pos] << 2) | (buffer1[pos] >> 6); // Expand 10-bit data lo = (buffer1[pos] << 2) | buffer2[pos]; // to 12 bits } if((o2 < i2) && (o2 > (i2 - XFADE))) { // Output sample is close to end of input samples. Cross-fade to // avoid click. The shift operations here assume that XFADE is 16; // will need adjustment if that changes. w = in - out; // Weight of sample (1-n) inv = XFADE - w; // Weight of xfade pos = nSamples + ((inv + xf) % XFADE); s = ((buffer2[out] << 8) | buffer1[out]) * w + ((buffer2[pos] << 8) | buffer1[pos]) * inv; hi = s >> 10; // Shift 14 bit result lo = s >> 2; // down to 12 bits } else if (o2 > (i2 + nSamples - XFADE)) { // More cross-fade condition w = in + nSamples - out; inv = XFADE - w; pos = nSamples + ((inv + xf) % XFADE); s = ((buffer2[out] << 8) | buffer1[out]) * w + ((buffer2[pos] << 8) | buffer1[pos]) * inv; hi = s >> 10; // Shift 14 bit result lo = s >> 2; // down to 12 bits } else { // Input and output counters don't coincide -- just use sample directly. hi = (buffer2[out] << 2) | (buffer1[out] >> 6); // Expand 10-bit data lo = (buffer1[out] << 2) | buffer2[out]; // to 12 bits } // Might be possible to tweak 'hi' and 'lo' at this point to achieve // different voice modulations -- robot effect, etc.? DAC_CS_PORT &= ~_BV(DAC_CS); // Select DAC // Clock out 4 bits DAC config (not in loop because it's constant) DAC_DI_PORT &= ~_BV(DAC_DI); // 0 = Select DAC A, unbuffered DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); DAC_DI_PORT |= _BV(DAC_DI); // 1X gain, enable = 1 DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); for(bit=0x08; bit; bit>>=1) { // Clock out first 4 bits of data if(hi & bit) DAC_DI_PORT |= _BV(DAC_DI); else DAC_DI_PORT &= ~_BV(DAC_DI); DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); } for(bit=0x80; bit; bit>>=1) { // Clock out last 8 bits of data if(lo & bit) DAC_DI_PORT |= _BV(DAC_DI); else DAC_DI_PORT &= ~_BV(DAC_DI); DAC_CLK_PORT |= _BV(DAC_CLK); DAC_CLK_PORT &= ~_BV(DAC_CLK); } DAC_CS_PORT |= _BV(DAC_CS); // Unselect DAC if(++out >= nSamples) out = 0; } CODE I FOUND FOR IR  ClyonPumpkin That I want to integrate in above   /* * Text-to-speech example to speak the first n digits of pi. * The number is stored in flash, each digit is spoken one at a time. */ #include #include #include SdReader card;    // This object holds the information for the card FatVolume vol;    // This holds the information for the partition on the card FatReader root;   // This holds the information for the volumes root directory FatReader file;   // This object represent the WAV file for a pi digit or period WaveHC wave;      // This is the only wave (audio) object, since we will only play one at a time char eyesound[13]="eye2.wav"; int mute = 0; /* * Define macro to put error messages in flash memory */ #define error(msg) error_P(PSTR(msg)) // IR Remote code int RECV_PIN = 9;  // pin 11 used by SD card interface so select pin 9 for IR IRrecv irrecv(RECV_PIN); decode_results results; long lasttime=0, lastcode=0, timediff=0; //////////////////////////////////// SETUP void setup() {   // set up Serial library at 9600 bps   Serial.begin(9600);               if (!card.init()) {     error("Card init. failed!");   }   if (!vol.init(card)) {     error("No partition!");   }   if (!root.openRoot(vol)) {     error("Couldn't open dir");   }   irrecv.enableIRIn(); // Start the IR receiver } /////////////////////////////////// LOOP void loop() {   if(mute == 0) playcomplete(eyesound);   // check for keypress happened   if (irrecv.decode(&results;)) {      Serial.println(results.value, HEX);      switch (results.value) {        case 0x83228B74:    // 1          playcomplete("command.wav");          break;        case 0x83228F70:    // 2          playcomplete("entertan.wav");          break;        case 0x8322906F:    // 3          playcomplete("extermin.wav");          break;        case 0x83228A75:    // 4          playcomplete("leader.wav");          break;        case 0x8322847B:    // 5          playcomplete("survivor.wav");          break;         case 0x83227887:    // 6          playcomplete("atention.wav");          break;        case 0x8322629D:    // vol up          mute = 0;         // mute off          break;         case 0x83226E91:    // mute          { Serial.println("mute detected");            timediff=millis()-lasttime;            Serial.println(timediff);            if(lastcode!=results.value || (lastcode==results.value && (timediff>1600)) ) {               if( mute == 0 ) { // is mute off?                  Serial.println("toggle off to on");                  mute = 1;      // turn on                  // delay(1000);    // wait a bit for debounce                  break;                 }               if( mute == 1 ) { // is mute on?                  mute = 0;      // turn off                  Serial.println("toggle on to off");                  break;                 }              } // end if             break;           } // end case        } // end switch      lastcode = results.value;      lasttime = millis();      irrecv.resume();   // Receive the next value   } } /////////////////////////////////// HELPERS /* * print error message and halt */ void error_P(const char *str) {   PgmPrint("Error: ");   SerialPrint_P(str);   sdErrorCheck();   while(1); } /* * print error message and halt if SD I/O error */ void sdErrorCheck(void) {   if (!card.errorCode()) return;   PgmPrint("\r\nSD I/O error: ");   Serial.print(card.errorCode(), HEX);   PgmPrint(", ");   Serial.println(card.errorData(), HEX);   while(1); } /* * Play a file and wait for it to complete */ void playcomplete(char *name) {   playfile(name);   while (wave.isplaying);     // see if an error occurred while playing   sdErrorCheck(); } /* * Open and start playing a WAV file */ void playfile(char *name) {   if (wave.isplaying) {// already playing something, so stop it!     wave.stop(); // stop it   }   if (!file.open(root, name)) {     PgmPrintln("Couldn't open file ");     Serial.print(name);     return;   }   if (!wave.create(file)) {     PgmPrintln("Not a valid WAV");     return;   }   // ok time to play!   wave.play(); }

Posted by SithLordIII 4 years ago