# COMMUNITY

### How do you measure the Cubic inches of a curved tube or pipe. Like a 4" PVC Elbow? Answered

I have an air cannon and want to know how much it holds

Asked by jj.inc 8 years ago

### Soooo... How 'bout that Cubic Zirconia, eh? [Most Likely DANGEROUS]

So I was just browsing Wikipedia when i fell upon the page about Cubic Zirconia. It turns out, that the basic principles of synthesis don't look all that complicated. So I was wondering, if anyone knew of any plans for a small skull crucible that were floating around the net.. I probably wouldn't use it for zirconiua, seeing as it needs around 2700 degrees Celsius to change structure (this is the dangerous bit), but it might be a fun introduction to induction heating. Also, it's a pretty awesome way of eliminating the need for a refractory when melting stuff (keeping a solid layer of the material as a shell instead). I think I could build most of the parts, but i don't know what frequency, how many windings and such would be needed for the coils. Also, if anyone knows of any other risks than the obvious burn hazards, I'd be thankful if you'd tell me before i go off and get killed trying to make this. Let's discuss! :D (Also, Skull Crucible is just about the most awesome name for anything ever).

Posted by huldumadurin 8 years ago

### If i have a 72 cubic inch CYLINDER that is 11 inches long, what is diamater of this cylinder?

If i have a 72 cubic inch CYLINDER that is 11 inches long, what is diamater of this cylinder?

Asked by trf 8 years ago

### How many grains of sand in a cubic millimeter? Answered

I want to know how many grains of sand are in a cubic mm, because I want to work out how many grains of sand fit in my bedroom (using maths rather then filling it with sand and then counting for the rest of my life.)

Asked by TurboFish 4 years ago

### I'm looking for a high volume, small size air compressor but I can't find a good one. What do you guys recommend? Answered

I need an air compressor that has an EXTREMELY high CFM (Cubic Feet per Minute) rating. It is for an air-powered exoskeleton (crazy idea, I know). It needs to be pretty small, backpack sized if possible, It doesn't need that big of an air chamber (fire-extinguisher sized). Continuous run is a must. Powering it shouldn't be a problem because I will be carrying ~ 30 pounds of Li-ion batteries for running the compressor. I also won't be needing more then ~ 100PSI. Weight is an almost non issue, I wouldn't mind a 20 pound compressor, I'll probably remove the frame anyway, so that will take away some weight.

Asked by bowmaster 8 years ago

### 1 ounce pressure of gas at STP contains how many number cubic metres ?

Asked by MuhammadB15 2 years ago

### Is this the best NdFeB magnet deal?

I'm doing a little informal research to find the best deal in neodymium magnets. The price per cubic inch seems to be extremely variable- some on the order of \$10 and others in the hundreds of dollars. Can you find a better deal than I did? Conditions on the order of NdFeB magnets: * Total price, including shipping to the US,  under \$30 * Contains at least four magnets with intact coating * Contains a total of at least 6 cubic inches (98322mm^3) of magnet  The best I could come up with is \$4.93 per cubic inch. Can you find a better unit price?

Asked by NobodyInParticular 8 years ago

### Ashes stuck on my cubic charcoal briquette?

Hi, am making charcoal briquette using 6% starch as binder and 4% clay, I got a good briquette with no crack, and good density. But the problem is, the ashes stuck on my charcoal briquette, and I need to shake it hard to remove ashes, even I reduce clay to 1% and same problem. Anyone can advise me how to solve the ash problem?

Asked by mahrammal 9 months ago

### Printing Time? Answered

HiWhat is the lead time in standard printing process in term of Cubic MM, of course varies in Printer Model and Brand, so what is the lead time used on your 3D printer ?Thank you

Asked by willykong 1 year ago

### how much does air weigh? Answered

How much does 1 cubic foot of air at 1 atmosphere of pressure weigh? (and for the lmgtfy.com answerers, a google search returned conflicting answers)

Asked by revelae 8 years ago

### How to produce 14,000 cubic feet of hydrogen? Answered

Okay, here is the deal. Me and a friend where thinking about filling two weather balloons( http://www.ebay.com/itm/GIANT-Weather-Balloon-Meteorological-Military-8-Dia-/330626487344?pt=LH_DefaultDomain_0&hash=item4cfadfd430) with a lifting gas, sending it up with a camera and gps-cellphone. Now, we have everything else figured out but how to get hydrogen, as it is the lightest gas. Is there any way to produce those quantities of hydrogen within a 6-36 hours? I figure I'd ask here because there are quite a few hydrogen powered vehicles here.

Asked by bretta 6 years ago

### DIY Hatchback Subaru Legacy

Check out this DIY Hatchback I caught a few pictures of coming off the Bay Bridge in Oakland, CA. I think the guy driving was a woodworker, and needed a couple extra cubic feet to fit things like dressers and wardrobes.

Posted by ewilhelm 9 years ago

### blimp coming soon! but need help

I have restarted the blimp project and it will be coming soon....i hope. i need to know how many cubic feet of helium does it take to lift 1 pound (16 ounces). also need to know if mylar will melt to. please respond

Posted by Sun Gear 10 years ago

### too much damp.....dehumidifier has anyone made one?

I'm thinking of building a dehumidifier to deal with aspace of 120 cubic metres has anyone done one and can you give any guidance...... i searched on here and all i found was an instructable to build a bass fiddle?

Asked by trapper23 4 years ago

### blimp coming soon! but need help

I have restarted the blimp project and it will be coming soon....i hope. i need to know how many cubic feet of helium does it take to lift 1 pound (16 ounces). also need to know if mylar will melt to. please respond

Posted by Sun Gear 10 years ago

### What would be the best way to construct a kiln?

I'd like to build a kiln with an interior roughly 8 cubic feet (2' x 2' x 2'). Does anyone have any experience making such a device or have any suggestions on how to do it? If it is only practical to build a smaller one, that's perfectly fine as well. Thanks

Asked by Neemund 9 years ago

### How about a teeny tiny power supply??

I've seen some pretty good power supply projects on here. Here's a challenge: Make a 5 to 12 volt power supply that can fit into a 1 cubic inch space, of any dimensions, i.e. 1"x 1" x 1" or 1/2" x 2" x 1", etc, including any enclosure. It must put out at least 300ma sustained and must have a fairly smooth voltage regulation for use with other electronics (of course). It must have clear schematics without the use of special programs to view, i.e. it shouldn't be in an eagle format or rather can be viewed with paint, or any of the other picture viewers. It must be powered from the mains and NOT use a microcontroller or any custom chips. The smaller it is, the better, and less than 1 cubic inch is excellent. I've seen real genius on here. Is this genius ready to try this?

Posted by Pazzerz 9 years ago

### Anyone have plans for building roll out chicken nesting boxes?

Nesting boxes are usually about one cubic foot.  Several hens will use the same box.  Some hens will pick at eggs and break them.   I am looking for box plans that include a slanted box floor combined with a collection box so after an egg is laid and the hen leaves, the egg will roll into a bin.

Asked by mitch2989 8 years ago

### Contest:Save Houston, Recycle Ike

Calling all instructables utilizing millions of cubic yards of wood mulch.The city of Houston is sponsoring a nationwide contest to utilize the 5.6 million cubic yards of tree waste collected since Hurricane Ike hit the scene.The city is already considering a number of ways to use the waste, including for erosion control, boiler fuel and electric generation, but the mayor said he hopes others will come forward with large-scale possibilities.So get creative! Redesign the paradigm! Think long-term and quick to implement. All participants must submit all information on the "Participate" page by Midnight October 31, 2008Need a brain jolt to get the creative juices flowing?Whet your appetite with some simple ideas from the community:Reclaimed Wood TableSalvage Old Barn WoodExpandable Hydroponics System from JunkCheck out Make's coverage and the official site: Recycle Ike for more information.

Posted by scoochmaroo 9 years ago

### The Hoover Dam and Curing? Answered

The Hoover Dam contains (I read) 2.6 million cubic metres of concrete. Yet it was poured in relatively small blocks in order to expedite the curing process. Why? If curing is a process of hydration, why is this not a local process, independent of the volume of the concrete? I read also that if poured in one fell swoop, the Dam would have taken 125 years to cure. I'm not certain I've fully understood the curing process if it is truly volume dependent.

Asked by Dornfield 7 months ago

### What does osi stand for? Answered

As in, "a 16 osi blower delivers 400 cfm of air through a piping system..." I know that cfm is a way of writing cubic feet per minute. PSI is pounds per square inch. Building systems to move gases and liquids around safely has really had me stumped till now, especially when dealing with HVAC. I'm not familiar with some of these units.

Asked by Vorenus 6 years ago

### salvaged parts: instructable ideas?

I found a nonfunctional UPS at a church yard sale and was able to salvage the following items: 1 class h transformer (about 5 cubic inches if that means anything) 1network transient protector plug-in 4 4 x 3 aluminum plate heat sinks 4 6v 11a gel-cell pb acid batteries and the circuit board may have some components that aren't fried too. anything practical would be great.

Asked by harlyquin 9 years ago

### Rf motion sensor connected to USB receiver

I am JUST getting into home builds and i want someone that can help me or make one for me.. I want a motion sensor device that can send a signal to a USB receiver.. I then want the usb receiver to inturpert the signal and do something .. - like open or toggle a program on that computer... ultimately it would be a cubical boss alert device.. when it detects motion it automatically flips my application! :) Any takers? Ryan

Posted by rmwilson 11 years ago

### Smoking machine Specs, for hot smoky girl interactive sculpture ? (and ventilator)

Hi I want a smoke machine that pumps low cubic meters or that imitates this picture. It`s for a huge 123dmaker face sculpture Can i get this sort of effect? And can I get a ventilator that "inhales" the smoke  and makes it disapear? http://www.bing.com/images/search?view=detailV2&ccid=vg%2bScmVq&id=153762409D14BE46E36C32C4027CD224EF895C32&thid=OIP.vg-ScmVqgsLn3ekf-zOVNwDXEs&q=inhaling+smoke+girl&simid=608020036307845272&selectedIndex=2&ajaxhist=0

Posted by DIAGONALLIS 8 months ago

### Home Made AC for building/Workshop

I was curious   what   if  i  put a 16 cubic ft. chest  freezer in  my  small work  building   and  filled  75 % fullof  water . once frozen i  could  install and  4 inch pvc pipe in  one side  and  then another in the opposite  side.  On days i would  be working in my shop  for   a few  hours   if i pushed air  through  the   pipe  and  recieved  cold  air  out the other side.   Wonder how long  this would work  or would  it  work  at all? Andy

Asked by andy1917 5 years ago

### Aluminum casting on the cheap?

For my woodshop class I am making a cane/"pimpstick" and I am making a custom head for it. I want to cast it in aluminum using the lost wax technique. would normal plaster of paris be a good material to use for the mold? the peice is about 3 cubic inches. I was thinking about having two "fires" one to heat my aluminum and another to heat  the mold so it doesnt shatter. Is that workable? P.S. It would be a one use thing so no need for anything expensive. I have literally 10 dollars to spend on this. Thankyou,   bud

Asked by budhaztm 5 years ago

### how to build a large manual air pump to suck in 1000 cf of air and push it out

The air will be forces out into a bag that is under water in a tube that is 6' dia X 10' deep. the air must fill a 8 cubic feet bag in 20 to 30 sesond. who much force must be places on the handle to such the air iin and most importantly to force the air out into the bag? is this even posible to build?  the hight of the manual air pump is not an issue the dia is lineted to the dia of a steel tube I can get. thank you wlglover

Asked by wlglover 7 years ago

### Hi, since I discovered your great instructable I wanted to build this myself. I started and got quite far, but when I wanted to order the pcb from cubic print I found that he doesn't sell it any more! I tried to download these pcb gerber files from github but all my attempts to import them to conver...

Asked by berniefra on Slow Dance - a Fusion of Art and Magic 7 weeks ago

### Solar Air Con for animal shelter

I am thinking of moving to a warmer country ( SW France ) than England but I have a small pack of huskies that I would like to keep cool in the warmest weather. I was wondering if it is possible to use the solar energy available in abundance to provide an air cooling system for them. I realise that aircon normally requires a lot of electricity but I am only looking to keep a small space ( block built shelter of about maybe 7-800 cubic feet ) cool and hoped that this might be possible. Any ideas ?

Posted by ukpicker 7 years ago

### Printing 3d models/ prototypes affordably? Is there a cheap place to get my cad file printed by a 3d printer? Answered

So I am working on a futuristic design of a ferris wheel and am having trouble finding a company or manufacturer that could make an affordable prototype. My 3d model has the dimensions 100mm x 100mm x 75mm max size with the volume of 5 cubic inches. The school I go to does not have a 3d printer but I was fortunate to find one of my teachers came from a school who had one and she was going to try and see if they would print my model for me. It's been over a month since I heard of that option and I am assuming that option is no longer on the table. So, I am looking for an affordable option to print my 3d model. My budget is under \$50. Had I been able to use the school's 3d printer it would have only cost me \$4 per cubic inch, resulting in \$20 cost to make. Doing a google search for 3d prototyping companies I found a few commercial options yet the quotes end up costing around \$375 - \$725. I know the Makerbot is one of the most affordable 3d printers out there yet \$1000 is not in my price rang.

Asked by mcguyverzboss 6 years ago

### what is the most productive,fastest and cheapest factory machine that can produce a pipe door spring gun? Answered

The link is below https://www.instructables.com/id/how-to-make-a-pipe-door-spring-gun/ because i own the idea of it and i want to be able to sell them so i can make my first major and big income i also need it to be effectant,little or no matince,and little or no cost to operate and i need it to be a max size the size of 1 cubic meter i also need it to be alavalable to almost everywhere

Asked by 35Timmy 6 years ago

### Really easy multi use desktop machine

I need a multi purpose machine that can fit in a one cubic foot area. I need it to do most or all of the following; 1.) Have a "3rd and 4th hand" 2.) Fit in a 1'x1' space 3.) Light 4.) A controlable .1-24 volts DC output 5.) Small Storage 6.) Large magnifier on a flexible mount. 7.) Built in ruler 8.) Wire reel holder Im Sorry for being so picky, but I need to somehow cram all of that in to a small space. Pics or drawing would be nice. But comments and ideas would be better. P.S. Pic isn't related to machine

Posted by ry25920 10 years ago

### Battery charger help

As some of you may already know, I'm planning on building an electric car this summer. Its all planned out, but instead of using regular transformer based chargers I was wondering if someone could help me design a transistor based charger to reduce weight. Requirements 48 or 72 volts Needs to charge marine deep cycle batteries over night Needs to not have a transformer. Needs to be relatively small (under 1 cubic foot) Needs to be simple enough for me to build myself (I can do it if you can design it) Can anyone give me some links or some good schematics for this? Thanks

Posted by LinuxH4x0r 10 years ago

### Small beach transport device ideas

Hello everybody I have quite a tall order for you my family is going to the beach in  a couple months and it is my custom to bring a fun and unique contraption along specifically a transportation based contraption I would normally bring a modified bicycle or something of that nature but since my entire family ( a family of four) has to fit into a ford explorer with all our stuff to last the week  the contraption must either be a board of some type or occupy a space of no more that 1.5 cubic feet so please let me know what you come up with and if I think of anything I will post it too  Thank you fidgety2

Posted by fidgety2 6 years ago

### Universal 3d printer cabinet

Hi everyone... just wanted to share with you a new campaign we launched live today on Kick Starter. Its a universal 3d printer cabinet we have been working on for a while... Its got almost 4 cubic feet of storage and can be accessed from a front door and the top of the cabinet...its ready to be customized with multiple knock out's to really get the results you want... We are producing in Black, White and solid Stainless Steel... I appreciate you taking a look and your time! Regards, Brian McLoughlin Maker Kase http://www.kickstarter.com/projects/1045344246/maker-kase-universal-printer-cabinet

Posted by bmc.loughlin 4 years ago

### Solar oven theory

When looking at various solar oven on instructables, they almost all use refective coating of some sort on the inside. That to me makes sense for the concentrators/parabolic/funnel ovens, etc. I am just wondering if the regular box ovens if it really makes as much difference or if the heating factor there is more so just the still air in the box being heated and not able to escape. I want to start making solar ovens to get an idea of how they work. I have a square piece of 1/4 inch glass, probably 4 ft by 3 ft. I thought about just digging a cubic hole in the ground and laying the glass over top.

Posted by avocadostains 3 years ago

### Make supercapacitors from graphite in a DVD burner

The outline is that you can deposit graphite oxide (a cheap bulk material) onto a film of PET (the plastic used in Coke bottles), hit it with a commodity infra-red laser (such as the one in a \$30 LightScribe DVD burner) and end up with a form of activated carbon material that can be used as the electrode in an electrolytic capacitor.  Add some aluminium foil, separator membrane and electrolyte and you've got cheap, robust energy storage.  The headline numbers are a few hundred milliFarads per cubic centimetre at a few volts, which works out to 1.36kWh per cubic metre of stacked capacitors.  It's still about 50 times less energy per volume than lead acid batteries, but you could store as much energy as your house will need overnight in the size of a garden shed or a set of bunk beds.  They charge/discharge in seconds and retain >95% capacity at 10,000 cycles so seem suitable for storage to even out intermittent energy generation from, for example, solar or wind power. I'm really thinking about cost here- unless I'm missing something fundamental it doesn't seem like producing these on a high volume roll-to-roll process would be excessively difficult, and the cycle life means the replacement time would be many years even in heavy usage.  Could you get sufficient kWh per dollar to make these a viable storage mechanism for home-scale renewables? There's a more informative article here.

Posted by PKM 6 years ago

### how do i embed an object in a large transparent block (think jeff koons or damien hirst)?

Hi there, if i want to embed an object (say a pair of sneakers or a football) in a square transparent block using a material that i could pour into a mold as a liquid and which would cure relatively slowly as to let a bottom layer begin to dry as one puts the object in so that it won't sink to the bottom, what would be the best option for doing this AND the most cost effective if i wanted to do larger projects? originally, i assumed that fiberglass resin was the only option, but it's VERY expensive (\$60+ per cubic foot... or so) and i'm hoping that there may be a more cost effective, easy to use material. thanks in advance, Jeremiah

Asked by jeremiah1223 7 years ago

### Warehouse House

Ever since i was 12, i've wanted to live in a warehouse, 1000+ square feet. my plan would be to build an apartment (myself) on the inside, out or 2x4s, etc. I would build the inner house to code, insulate and heat it (so i wouldnt have to heat a million cubic feet), and just do all the stuff you can only do when you live in a warehouse. like ride a go-kart between your bedroom and kitchen, and have a trampoline in your living room. Now that i'm approaching the age of "hey, you're gonna be 23 soon, you'd better start thinking about a house", this is becoming more and more appealing to me. Anyone have any input on procedures, policies, zoning regulations, bills, etc? If (when) i do it, i'll most assuredly post an 'ible.

Posted by falcotheimpaler 9 years ago

### How to cool my little workshop? Will this work

I have my workshop building i am trying to cool without spending a 1000.00 bucks. I havea small chest freezer forget the cubic feet but it is around 2 ft. by 3ft. in size. I was wondering if i fill 75 5 full of water and instal a coil of 100 feet of 3/8 copper tubing in a coil on the inside running to a 36 inch fan with 75 ft of 3/8 coil on the front and set it to pump 32 degree water to the fan . Do you think this woudl bring a 10ft by 16 ft building down from 100 to 80 degrees ? This would probably be cheaper on electricity over all than a a/c if i could afford one. Can anyone share there thoughts? Thanks alot Andy

Asked by andy1917 6 years ago

### What kinda engine would be suitable for a moped bike?

I am looking into making a moped out of my bike to increase fuel efficiency. I am looking to find out where i could find a suitable engine within laws for NH. Around here, According to the DMV a moped or scooter must meet the following restrictions: It must have an engine of 50 cubic centimeters or less. It cannot exceed 30 mph on level terrain. It cannot shift. It cannot exceed two horsepower. As i said, im not sure where to find a suitable engine to meet those criteria that i can scavenge. I am looking to make a chain drive bike not a roller driven due to inneficiency,maintence,and traction of the roller on the wheel being lack. Couldnt find any chain driven conversions on here. If you can offer any information it would be much appreciated.

Asked by trf 7 years ago

### What is the optimum amount of rubbing alcohol for explosions?

I am working on a mini-cannon based project. The cannon has a chamber with interior volume of 15.2 cubic inches. For propellant I am using rubbing alcohol (isopropyl alcohol) that is electronically ignited. The barrel on this gun is about 2 feet of 6mm tubing, designed to shoot Airsoft BBs. I was wondering if anyone knows what the ideal amount of rubbing alcohol to use was (I am using 70% alcohol now, but i can get at least 90% at the store). I could also possibly use butane or propane, if that is better. I went on the internet and looked up the stoichiometric ratio for isopropyl alcohol, but that just told me "1mol fuel to 4.5 mol oxygen at 100 percent concentration." I am not mathematically or scientifically capable of turning that bit of info into a usable amount.

Asked by ilpug 6 years ago

### Casing dimension to install Chilled Water Coil sizes for cooling

I need help on dimensions please. I need to build a box (casing) to install Chilled Water Coils and a squirrel fan to run well water thru for cooling a work shop. In short, I have very cold well water and want to take advantage of it. My shop is 50’ x 29’ x 10’ height. I’m figuring 14,500 cubic feet to cool. What I need to know is if a casing of 24” square that is about 5’ long would be enough to have one coil in front, fan in the middle and a 2nd coil on the other end? I will have a return vent and include at least 4 vents for air out flow. What I’m not sure of is how to calculate if I need to use bigger coils other than 24”? Do I need to give more information to get an answer? Thanks

Asked by opc167 7 years ago

### How to identify a metal ?

Hi ! Into a terrain near a very old volcano and a river, my brother found fragments of obsidian of various sizes and colors. Some of them are "glued" to metallic stones, and some others contain marbles of metals ... He also found a heavy metallic rocks (encrusted with obsidian) who reacts with magnet, and an other light one (without obsidian) who does not react with magnet. Do you know a mean to identify those metals ? (I Googled but found nothing very useful so far) Or do you have a clue of what it could be ? #1 is a metallic rock encrusted with obsidian. It must be iron because it's heavy, the rust is red, and it reacts to magnet. #2 and #3 is obsidian with marble of metal who reacts to magnet. #4 is an unknown (metallic ?) rock. It is light (150 grams for 200 cm3 - 0.33 pounds for 12 cubic inches), of the color of silicon (or the graphite of paper pen !), does not react to magnet but is (electric) conductor with resistance near 0 ohm.

Posted by chooseausername 10 years ago

### Is it reasonable to convert energy to power over time?

I have recently been talking with another person on instructables about converting 33 megajoules into a standard comparable electric unit, watts.  Now the formula for joules just so happens to be watts times seconds, but he still thinks this is wrong.  He says I can't just assume time.  Now I can assume any amount of power for any amount of time I wan't to as long as it adds up to 33,000,000 joules in the end right.  So if I wan't to consume one watt every second, then I have to set the amount of time as 33,000,000 seconds or roughly 9,166.7 hours.  This all seems fine to me right, because one watt for 33,000,000 seconds is equivalent to 33 megajoules. Now I originally didn't understand all of this so I just fumbled around and ended up converting to hp and got roughly 12, which is very close for being a rounded off number.  It comes out over one hour to equal just over 32 megajoules.   I can't seem to understand what the problem is, the DEFINITION OF ENERGY/WORK IS POWER *(OR OVER THE PERIOD OF) TIME Is there really such flawed logic here that "joules could be converted to cubic meters?"

Asked by jj.inc 6 years ago

### Led light & switch

Hi, I've purchased a wooden toy kitchen, for my daughter. I want to add a couple of special effects to it, for realism. There's one part I don't know exactly how to do and I don't know the correct terminology for the parts I need. So any advice would be greatly appreciated. basically, the pretend oven part of the kitchen, I'd like to add a push to make, illuminated switch to the panel that houses the pretend dials. I want this switch to be connected to a battery, hidden inside the play oven & upon pressing it, not only does the switch itself light up, it powers some red led lights. This is so when my daughter presses the button, it'll light up red inside, to give the impression it's hot, the oven has a Perspex panel, so the red light will be noticeable. I'm unsure how many led lights I'd need, it's probably 1 cubic foot in volume & doesn't need to be overly bright. So what type of push button switch, what types of LED & how many, what batteries and what other components would I need?   Sorry for the lack of knowledge & thanks for any advice.

Posted by dlee60 4 years ago

### Australians! Urgent help needed!

Hi everyone! I don't really know what category this should be put under, if anyone think it's in the wrong place feel free to move it. I am a guy from Sweden who are backpacking around the world and I am currently in Perth, Western Australia. I'm going abroad to Laos tomorrow and I will stay in south east Asia for about a month and then come back. My problem right now is that I have some luggage (extra clothes and camping gear) that I need to store somewhere during that time. I called a self storage company a couple of days ago from Coral Bay and booked a locker at their facility, however they forgot to mention that I needed to be there before five p.m. when the office closes even though I explicitly asked if I could come by later since I would arrive with the Greyhound bus. Does anyone know any fairly cheap (the lockers in the airport cost 8\$ a day, and that is a bit too much) place  that is open at this time, or even someone in the area who could could spare some space for about 1/2 cubic meter of luggage until I come back? If so, please contact me asap either here or on 0405682652.

Posted by Jur 7 years ago

### what do you think

Every one is going "green" these days and I myself am planning on going head on the opposite direction this is what I have, let me know what you think. I am building a GMC 3/4 ton 4wd. my first priority was what motor to use. so I asked around and a family friend said he had a 2 ton grain truck that has been sitting for years and was looking to get rid of it, he said it had a big block in it. so I took it because it was a big block. it is a 366 cubic inch big block tall deck (NOT A BORED OUT 350) I figured if its good enough for a two ton truck its good enough for my 3/4 ton. I also pulled out the transmission and it is the sm 465great transmission, and my dad gave me the transfer case its the np 205 the king of transfer cases. now I need better axels all i have are the factory 12 and 14 bolt. I am sure they will do but I am looking at getting the Rockwell 2 and 1/2 ton planetary gear set. you know the axels in the duce and a halves .I have a predicted fuel mileage of three to five miles to the gallon. but I could challenge anyone to try to out pull me because I have the gearing and the power

Posted by vince 09 9 years ago

### Living in a box, living in an expensive box...

Four Europeans are in the final stages of selection to be locked into a series of sealed boxes for a year and a half. They are competing for two of the six places in Mars500 - a full-scale simulation of a short-stay Mars mission (a year and a half each way, a month on the surface - don't get me started on how wasteful that is...). The Mars500 facility, which is located on the IBMP site in Moscow, comprises four sealed modules. The total interior volume is about 550 cubic metres. There are no windows. The walls in the living quarters have been covered with a wooden panelling to make them feel slightly less austere. Looking after the participants' needs will be a mission control-room sited just outside the containers. But the experiment's designers are determined to make the training exercise as realistic as possible, so they will introduce a time delay in communications after two months. Because it can take about 20 minutes for a message to travel from Mars to Earth, it will take this amount of time in the simulation also. Message delay The crew and their ground controllers will send text messages to each other and then have to wait for the replies. It means there can be no real-time conversations with friends and family - and, in moments of crisis, it will mean the crew will have to make crucial decisions themselves. I think the biggest test will be the social side - how will six humans, no matter how well-selected, deal with having nobody but each other for years on end, and being in each others' faces twenty-four hours a day? Could we end up looking at the first murder in space? BBC Story ESA article Institute for Biomedical Problems

Posted by Kiteman 8 years ago

### My idea for the iRobot Challenge

Okay, I hope this is good :-D!Well, my idea is actually several ideas, but they all share the same theme:Chumby + iRobot's Create(And yes, I already have a Chumby)This might sound crazy, like adding speakers to an iPod, but it is defiantly possible.Since I don't have one, I can't say, for 100% sure, exactly how I'm going to make it work, but I have plenty of ideas. (I'll work backwards)The robot has 25 inputs. My last resort would to be to hook up the headphone jack to 2 of those inputs, and send signals by pulsing sound, similar to the way TV remotes pulse light. This is guaranteed to work, because Flash (which I'll be using in the project itself), can access the speaker. For robot-to-Chumby communication, there is the Microphone.Next up, is building this Sensor Package module that you can use with your Chumby. This would also work great, since it has 8 digital outputs, 8 digital inputs, and 12 motor drivers (which I could probably use as more outputs). However, I haven't found out yet if you can access this from flash, so it may become an issue. However, it seems more likely than the following:My first attempt is to tap into unused (in my setup) pins on the "Chumbilical", the main wire that connects the sensors to the main unit. This includes a USB port. Again, I am doubtful that Flash can access these, but I may be able to figure something out in Java or Phython.So I've hooked this up to the Chumby, now what? There are so many possibilities, because my new robot will now have various sensors from the Chumby, along with it's touch-screen display and WiFi.One could start with the "physical alarm clock", an alarm clock that you'd chase down to turn off. (As seen on ThinkGeek, it's "Clocky") Although, this is very much underusing it's capabilities. Next, of course, is the email alert system. When you're not on the computer, sometimes something external is a nice reminder :P In a workplace, lets assume someone gets an email every minute. This should be perfect timing for it to drive from cubical-to-cubical on every email. It would, however, be forced to rely on relative positioning.After the frivolous, this could be set up as a system where the Chumby would display images of me, streamed form a webcam, as I control the robot. Attached, would also be a webcam, streaming from the robot to my computer. (This was done with the Make: controller and a MacBook) (And yes, the Chumby has a HTTP server in it, and can support some webcams!)Heck! Why not have all three running at once :PI defiantly think the first 2 are not Instructable-worthy, but I wanted to give some other examples. The 3rd would be the one I do ;-) It would be much lest costly than the full-sized version, this being under \$350. (I'm guessing that's about 1/3rd the cost?)Thanks for considering me as someone worthy of this "scholarship", I know I will use it over and over again if I end up getting it :D

Posted by zachninme 10 years ago