New Years Ball

I don't know if you heard, but the ball that drops in Times Square every new year was energy efficient this year. It was twice as bright, but only used as much power as ten toasters. How do you think they did it? I'm thinking all LEDs. It was a neat thing for them to do, regardless.The following picture is from the Associated PressUPDATE: T3h_Muffinator looked it up on wikipedia. They switched to LEDs this year. Link

Topic by Weissensteinburg   |  last reply

Team Ball Concept

Dear all,first of all, hello to all of you, I'm new to this site, but I've already seen some wonderful things on here, and they are a true inspiration source for the projects I'm working on during my study as an Industrial Designer.I've got a question about a concept of mine, which I will explain briefly to give you an understanding of what I'm trying to create:When playing a sport, let's take football (by which I mean soccer) there's a ball. My idea is to make the ball represent the ball possession (or actually the ball passing between players) of the teams. For instance, you have a blue and a red team, and what I want to do is make the ball color almost entirely blue if the blue team is in ball possession all the time. This way people will be more stimulated to play with eachother, passing the ball to eachother instead of scoring goals individually.The way I want the ball to change color, is by making it detect when it's being kicked, by a football shoe (which has to have some implemented technology as well). So everytime it's being passed from one player to another of the same team, the ball will color more blue or red. I need some help with the technology as I'm totally new to this aspect, 1. How to make the ball change colors? (LED's, or optical fiber:, or any other suggestions?)2.How to make the ball communicate with the shoes?One thing I've been looking into is RFID - chips/reader,, and then make the RFID-chips with a very limited range, so that only when the ball (with the reader) is close enough, the reader will detect the chip.But this seems like a last option, and I actually want something better.What I basically want is that when the shoe and the ball touch eachother, the coloring will happen. The requirements are that the shoes, must contain unique information so that the ball will know on what team that shoe is, another thing is that it can't be fragile, as the ball will be kicked by the shoe.Now as I'm fairly new to technology, I don't expect to build something with the best technology possible. As I have to write a final report, I will just present the technology idea in it. But it would be great if I could actually show an interactive prototype version of my concept. Therefore, if you have any suggestions, please write down the best possible way to create this, and a probably less perfect way that I can demonstrate (I'm willing to learn a lot over the next few weeks).Thanks in advance!

Topic by Crimson1989   |  last reply

Ball Mill Help? Answered

I'm planing on constructing a ball mill out of pvc plumbing parts. So far I have two questions... ~I need some help with how to get a motor to use to drive it, that wouldn't require 'to much' wiring to set up. I was thinking about using a drill and mounting it some how. ~Second, I would like to know where I could get lead or other non-sparking media other than online. For example, I heard you could use lead fishing weights, if they sell this at a place like Dicks Sporting Goods could you please send me a product number? Thank You for your time

Question by muffin1   |  last reply

Ball cyclotron powersupply? Answered

I'm planning on making a ball cyclotron as my project and i need a high voltage power supply for its working, can i use any type of high voltage power supply like a ZVS powered flyback transformer? Or is there any specific conditions for power supply to make the cyclotron work?

Question by jasshopper   |  last reply

is a rock tumbler a ball mill?

I have a rock tumbler and i dont want to buy a ball mill if i dont have to

Question by panzuman   |  last reply

Tennis ball mortar fuel?

Would axe or hairspray possibly work as a fuel for a tennis ball mortar?

Question by Shadow94   |  last reply

Kinetic ball clock DYI? Answered

Anyone see a tutorial on how to make a clock like this one? I know I can just buy the thing but I wanna make it on a larger scale. And I don't have one to observe and to reverse-engineer :(?

Question by Crazy Electrum   |  last reply

what is the ball on a leydon jar for?

Ive already tested other things to make the shock stronger, like putting a spring that allowed it to shock people without them touching the foil. i head the ball and magnet makes it stronger but i want to know how this works??? anyone plz tell me P.S Plasmana Rocks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Question by ElectroManiac   |  last reply

Inside PvC pipe, doesn't it have to have holes in it? To allow the escaping gas too expand into the second chamber.

Regular firearms work on a simular principle and size matters. 9 holes 1 inch apart, 4 lines of them. or make the inner tube out of screen. Mom & dad will love that one.

Question by    |  last reply

Will hardened lead antimony balls wear out quickly in a ball mill?

I've read that regular soft lead balls can wear out extremely quickly and contaminate mixtures in a ball mill, but what about these hardened lead antimony balls? I don't really fancy the idea of breathing in a lot of lead dust after a couple hours of milling. Would it be a good idea to get the lead balls from this website (found under "ball mills and media") for my ball mill (for making potentially explosive chemicals)? I've considered getting brass balls, but they are unbelievably expensive. I've also considered getting a brass bar and cutting it, but that's not cheap either and I don't know where to get a brass bar. Plus, apparently brass wears down quickly too, so it seems like a lot of trouble when I can just get lead balls, as long as they don't wear out too badly.

Question by Ke-Bob   |  last reply

Where can I get a plasma ball driver circuit? Answered

I have a old glass sphere from a plasma globe and I was wanting to use  again but i need the circuit I need it if I want to use it again

Question by nerd7473   |  last reply

How do make a ground snapper?

A co-worker of mine had some small saran wrap balls that had something in it. and he would throw them at the ground, and it would make a loud crack or snap sound when it hit. Do anyone know what Im talking about, or what was in it? How do you make it?

Question by 8ballhacker   |  last reply

How can I build a giant ball like a big hamster ball?

I am looking into creating a virtual reality experience controlled by something like the VirtuSphere (  I know there are giant hamster balls out there, but they are inflatable so I don't think they would be strong enough for what I want to create.  Also, solid balls would be waaay too expensive (like the BuzzBall or a Zorb).  Ideas? 

Question by meztek   |  last reply

Arduino-powered ball balance machine

This wood panel has the ability to move a ball anywhere it wants thanks to Arduino, servos, and processing. If the noise could be cut down this would make for a very cool installation. Origamata via Make

Topic by fungus amungus   |  last reply

wire flyback transformer plasma ball?

Wire diagram for a flyback powered plasma ball light bulb

Question by luckyboi   |  last reply

Why was there plastic on my plasma ball? Answered

So I have had my plasma ball for about a year now and it wasn't very clear anymore.  At the top I noticed that there was some kind of coating on it after washing about 5 times with windex.  The ball worked fine were there wans't coating anymore so I rubbed it all off, it was plastic and now my hands are all sparkly.  Was that ok or am I risking major health problems.  Also, what is it for. So also, if your plasma ball is murky this is why.

Question by   |  last reply

Cool hacks for sphero (robotic ball)?

What else can I do with a robotic ball? Please comment! I'm really bored right now! You can post actual ideas or crazy concepts too!

Topic by NXTHacker 

Plasma ball with Giant vodka Bottle?

Hi I am thinking of using a Giant 3 litre Smirnoff vodka bottle  as shown in the link below: To make a Plasma globe but inside the bottle. I need some sort of high voltage supply and an electrode but aren't sure what else . The main Problem I can see is creating a vacuum inside the bottle . as I don't have a vacuum pump. Does anyone have any tips on how to create a vacuum inside the bottle? Also would an inert gas work instead. Any help appreciated  Thanks Ben

Question by 369ben   |  last reply

will a beach ball leak when filled with helium? Answered

Hi, i am making a weather balloon and as a cheaper alternative to proper weather-balloon balloons I would like to use a beach ball. my only questions are whether it will leak, and if there is anything else I should know about filling things with helium?

Question by cheeseboy   |  last reply

Transparent plastic hemisphere? Answered

I've an idea for a project which will need a transparent plastic hemisphere, around 3" to 4" diameter, to house it. Any ideas where I could find something suitable? What would do the job is one of the clear balls from arcade crane grab machines, but I'm looking for something less down to skill, judgement and how much they've rigged the machine.

Question by AndyGadget   |  last reply

TRigger ideas for a ball valve air cannon

Hey is any one searching for a trigger mechanism for there ball valve operated air cannon well here it is a then go to my inventions then advanced high powered rifle

Topic by ghostman!!   |  last reply

need some way /someone to calculate pressure downwards VS. inwards on ball?

I´m building an automatic toolchanger for my cnc mill. i need some help to calculate how strong a spring needs to be, for a ball to be pressed strong enough inwards to hold a cone (tool holder) I need some fomulas thx, hope you get what i need :)

Topic by lordl9999   |  last reply

What would I need to build a handheld apparatus capable of spinning and launching moderately sized steel balls?

Preferably one that's not excessively bulky. The balls in question are slightly larger than a golfball.

Question by Weather Report   |  last reply

How can I make a small TV using a small LCD screen? Answered

I have a movie project idea that requires the use of a prop with one heck of a twist. Im trying to make a "Crystal Ball" that can project a movie from the inside of the ball, and I need to find some way to make it work without the necessary use of any tv or usb cables, even though it can use them. (Ex: in one shot, the actor is holding the ball, and is visible from head to his waist, but there are no cables running from the ball) So it could use video data from an SD card or a USB and also be used as a TV. The largest ball I can find is a 3" diameter clear plastic craft ball from a nearby hobby shop in a neighboring town. I guess what im asking in a nutshell is "how small can you make a diy projector?" Any help with this will be greatly appreciated!

Question by EngineerJakit   |  last reply

Can a PDF be submitted?

I have a design/build plans for a $90 4.5" f/8 ball scope that I call the PortaBowl.'ve been trying to get it into as many hands as possible and as it was created in a design program, it's not that easy to strip down to a set of text and picture files.Please let me know! - Jay Scheuerle

Question by jayscheuerle   |  last reply

How can I fix an old ball point pen?

How can I fix a ball point pen that doesn't work any more?

Question by Adealyn   |  last reply

Would this tennis ball mortar design work?

I was thinking about using 3 pringles cans. I'd cut the metal bottoms off of 2 of them and tape them together ontop of the third one, which still has the metal. Then I'd tape/glue a capacitor from a digital camera onto the tennis ball and charge it up. It would hit the bottom, create a spark, and ignite the fuel. Would this work?

Question by Shadow94   |  last reply

Would it be dangerous to submerge a plasma ball in mineral oil?

I'm thinking about creating an art project, but would need to submerge the glass part of a plasma ball in mineral oil (which I've heard is not conductive). Would this be dangerous?

Question by rockyreasoner   |  last reply

What is the best type of ball milling media?

I'm trying to decide what kind of grinding media to use for crushing powders in my ball mill. Is it better to have different sizes? Also, is it true cylinders work better that spheres? My two main choices are either brass balls or alumina cylinders, which one should I pick?

Question by Ke-Bob   |  last reply

Roland Big Boy ball trailer hitch?

I have one of the above trailers, the ball hitch should be secured to the cycle saddle clamp, however I am unable to re sucure the clamp tight enough to stop the saddle rotating and the saddle dropping down. I have seen a clamp which secures to the actual seat post and the ball hitch is secured to that, i am unable to locate such a clamp, I am sure someone will know or can help me find this item. I am having to use my trailer as a hand cart at present for going to the allotment each day. Please help if you can. Thank you Joanna

Question by    |  last reply

How difficult is it to Increase the intensity of a plasma ball?

I just bought a cheap USB (5v) plasma ball. Quite frankly, the intensity of the streams is pathetic. You can barely see it when the lights are on. I wanted to use it for a decorative project, but need to increase the intensity of the streams. Would increasing the voltage (say from 5v to 12v) work? Or is it more complicated than that? I can do basic electronics, but mostly just simple stuff following circuit diagrams etc.

Question by Beenay25   |  last reply

Remote activation for LED ping pong balls

I would like some advice on how to go about putting something like this together. I would like 3 to 4 ping pong LED hooked to a remote. I would like to be able to remotely turn them on and off. I have built the Balls that stay on all the time and my children work to find them outside at night. I would like the ability to turn the on from the porch after I have hide the for more of a challenge.

Topic by wrestling 

Ball counter or weight sensor with relay to sound alarm or trigger 9v confetti cannon

Anyone interested in a bit of work...I could also run it as a competition. Apologies in advance if what I am doing in not allowed on instructables, but I couldn't find a place to offer this work. Peoplehour does not specialise in tech gadgets! I am a one man band training business in the UK. I am trying to find someone to make this gadget to work with my Gravity Ball Game. Gravity Ball is a two hour team building activity. Gravity Ball requires teams to design and build a construction capable of transporting a ball from one zone to another; the ball must roll freely along the construction using gravity only. There will be a shared zone that will require team collaboration, co­operation and coordination. Everyone needs to contribute to the overall team objective whilst ensuring their own structure functions to a specific brief and works correctly. All teams will release their designated ball (tennis ball, golf ball, cricket ball, squash ball. Etc.) at the same time. Each team ball will roll freely along the team structure, into the shared area and the fall into a collection container. When all the balls are in the container (and a specific weight achieved) then the Weight sensitive relay switch will detonate a electronic confetti cannon. Alternatively, an infra red or sensor can count the number of balls that pass at a particular point and when the designated number is reached, the confetti cannon will detonate The detonation will give a wow factor to the team activity. Considerations: I need a gadget, Arduino, raspberry pi or beaglebone that can measure or count the number of ball and then detonate a confetti cannon or sound an alarm • Programmable weight or ball counter setting • Maximum weight 300g-400g or Maximum number of passing balls is 10 • Work with standard electronic confetti cannon from Confetti Masters, alarm or Siren ( or Showtec electric cannons ( Message me if you are interested! Kind regards Canute

Topic by GreenflashUK 

What kind of non-sparking ball mill media can I use other than lead?

I want to make a ball mill but I can't find any lead fishing sinkers (they're bad for the environment so nobody sells them anymore). Is there anything else I can use to grind chemicals in a ball mill that won't create sparks?

Question by Ke-Bob   |  last reply

Does anyone know the exact weight of a golf ball? Answered

I an working on a science project and dont have a scale to calculate the weight of a goflf ball. Please help its due Tomorrow!!!!

Question by west49rules   |  last reply

Will glass marbles cause static electricity when used in a ball mill to grind black powder?

Will glass marbles cause static electricity when used in a ball mill to grind black powder? it's for a homemade ball mill.

Question by tomaatesoep   |  last reply

A way to calculate something about a ferromagnetic ball in a magnetic field? Answered

I've built something like this and now I am thinking of calculating the kinetic energy of a ball flying off the magnet if it was 'set off' by a ball at some velocity. I have a great lot of problems: 1 The ball is about the same size as the magnet, which makes it impossible to say it is 'infinitely small'. 2 It is near the pole, so the magnetic field is not even (not like inside a coil). 3 The ball is ferromagnetic, so the field is going to be even more disrupted. 4 There is no Physics teacher this week. Maybe (I hope) there is a formula of potential energy of something like my ball in a magnetic field? Any ideas? 

Question by gruffalo child   |  last reply

how many watts does my rock tumbler use?

I just bought a rock tumbler off ebay. the brand name is "chicago power tools". its a basic 3lb capasity rock tumbler/ lapidary rotary tool. now, because i live in australia, i have a problem, my power outlets produce 240v , and the rock tumbler can only take 120v, and so when i pluged it into a power adaptor (us-aus), the transformer gegan to work, then overheated and produced smoke, fortunately it still works . now, i am going to go and buy a stepdown transformer and have learnt that if the device is using more than 90% of what the transformer supplies, the transformer will overheat or break or something. now, on my tumbler, and everywhere a description for it is put, it mentions nothing on wattage consumption, and so i am asking , how many watts will it use so i may accordingly select a stepdown transformer for it.

Question by oldmanbeefjerky   |  last reply

how do you build a golf ball trebuchet?

For school i have to make a trebuchet that can shoot a golf bal as far as it possibly can but i don't know how to make it and i can not find any plans that are descriptive enough.

Question by    |  last reply

Can I make from an taken-out plasma-ball an plasma-speaker?

I have take out the glass-globe with the gas from my plasma-ball. Can I make it to an plasma-speaker? p.s. i'm from germany, so i apologize for mistakes ;-)

Question by Gujkil   |  last reply

Would an electric scooter motor be suitable for creating a ball mill?

I want to make a ball mill and founda pretty good deal on a 24 volt motor. Will this die over time? Light on fire? Asplode? Anything else I should know?

Question by Coodude26   |  last reply

Idea for dbz scouter?

I had an idea for a dragon ball scouter useing a iphone chip, battery, and a bluetooth headset. can i have some help?

Question by blah42   |  last reply

What can I re-use a computer mouse track-ball for?

I was wondering what I could re-use a track-ball from a computer mouse for? Please answer as it would be greatly appreciated!

Question by Hijackthis1   |  last reply

Has anyone Hacked the," Nsd Power Ball Sm-01 Speedometer ?

Has anyone Hacked the," Nsd Power Ball Sm-01 Speedometer ? The Sm-01 ( the speedometer of Nsd power Ball ) Functions are: a. the count of revolutions ( hundred unit ) b. the current RPM c. the historical highest RPM/ the current highest RPM d. the physical index, 30 sec., 60 sec., 90 sec. The above-mentioned functions work individually. The speedometer can make users understand the use state of PB and provide real figures for reference. It combines the effects of rehabilitation, entertainment, and contest. Can anyone explain how this speedometer works. Is it Optical ? Since the Power Ball has 5 LED's incorporated in the Gyro Ball does this trigger the output ? Or is it magnetic ? When I, place compass next to the Power Ball the compass dial spins like a motor. How can I, use this speedometer to registered the speed or RPM of wheel ? Looking forward to hearing any suggestions, on how I may HACK this Great Speedometer/ TACH . This speedometer can be found on eBay for about $15.00 it's small and compact. It surprises me that no one has Hacked this for other uses !

Question by MagicLanternProductions   |  last reply

Simple nail and wire Electromagnet problem ! Answered

So I built a simple electromagnet out of a nail and wire, I hooked it up top power and a switch. What I need to do is to lift a small metal ball the size of a common marble with my electromagnet, when I press the switch ( momentary, when you press it, it shut off power and when you release it power get back) the ball should fall of it, but problem is, the ball stay magnetized to the nail !! The only solution I found up to now is to make the electromagnet just enough powerfull to hardly lift the ball, but I hate it because its a pain to get the ball to stick on and it often fall off randomly. Is there a way the ball could fall off every time I press the switch without reducing the strength of my electromagnet? Thank you !!

Question by Patented   |  last reply

My toshiba wont turn on, the battery died Answered

 i plugged the adapter in, and now the adapter is like making a tiny but high pitched whine. any clues smart masses??? thanks a ton!

Question by led235   |  last reply

i need to make a trigger for a project it is made of 2 pieces of wood?

It uses 1in wood balls and i have a cd spindle top holding the ball. Also it use stretch cords

Question by kreal069   |  last reply

smallest file size? and any way to put them on to dvd? Answered

I have recentaly got alot of dbz and i wanted to know whats the smalest format and can i put them on a dvd?

Question by knexsuperbuilderfreak   |  last reply