Would it be possible to "expand" a regular household printer?

Basically, what i'm talking about is taking apart a normal A4 printer and expading the paper feed and guide rails so it can accomodate paper of any size. The purely mechanical aspect certainly seems doable, although you'd run out of ink a lot faster, and I have no idea how to tackle the software issues. It seems theoretically possible, but i'm not sure about how you'd actually go about it - tips/help and any links would be appreciated.

Question by jlensher   |  last reply

Which is the FM transmitter antenna ? Answered

When I wanted to expand my FM transmitter broadcast range I found a White and Red and Black wires please specify me which is the antenna one .

Question by achraf52   |  last reply

expanded graphite heat-sink? Answered

Okay , I've searched and searched and cannot find what I'm looking for. Maybe the other diy'ers can help me. 1.What I'm looking for is a heat-sink made of expanded graphite or (carbon, graphite (∥) as it might be known as well) that is actually in the shape of a traditional aluminum heat-sink with the fins and NOT in the shape of thin film as it is very commonly available. I don't even know if it exists or is manufactured by any company. I've tried contacting some companies about it but they have yet to get back to me. The reason I want this is for the tremendous increase in heat conductivity as in this chart shown on this webpage http://physics.info/conduction/ . The application I am trying to use it for needs a raised, elongated surface area to displace heat semi-uniformly, hence why I need fins like a traditional heat-sink instead of the commonly available film expanded graphite online. 2. If it does exist or is able to be manufactured, would it be a ridiculously priced part or would it be a reasonable priced part? (Just doing small scale tests for now so it would be the size of a FET finned sink). 3. From what I've read it seems possible by maybe layering the films into a stacked lattice, keeping heat transfer perpendicular to the lattice, but what are your thoughts all? (I question bonding the layers myself but I don't know if you could hard press the layers together without a bonding agent since any bonding agent being used I believe would reduce the thermal conductivity quite a bit, but I'm not incredibly familiar with expanded graphite). Any and all help would be appreciated from this wonderful community Best regards, Velesh

Question by velesh   |  last reply

can you make expanding foam yourself?

You can buy it in cans and i've seen 2 chemicals mixed to make it. can it be homemade with easy to get materials?

Question by jvherbin   |  last reply

Expanding a USB Drive's Mmory for MP3 Playback

I have a Creative muvo USB MP3 player (128MB) just wondering if I can expand the memory on it by using another USB drive. I did not crack open the case to see what’s inside yet but just wanted to know from you people out there if any of you think this is possible.

Topic by chicagopooldude   |  last reply

Help... PCF8574T (Expanding "Nano's" Digital Outputs)

- When I saw my RGB Chromatograph clock my teacher built from a kit  I was so impressed with it I  jumped the gun & ordered the parts so I could make one with an arduino version, I never thought much about it, thats so simple I could do in a few hours no problem except I overlooked one simple thing.... This clock uses six 10mm RGB Leds, two for the hour, two for the minutes & two for the seconds, each led has 3 inputs & 1 ground, thats a total of 18 outputs,  thats not including a few other inputs used for status indicators, along with a few inputs for buttons, the problem is that a Nano doesnt have enough digital outputs & I completely overlooked that fact. Anyways I started looking for I/O expanders when I realized that I have a few 1602 displays & PCF8574T backpacks, I have heard some people claim that it can be used to provide an additional 16 digital outputs, if true then it that would resolve my issue very easy Has anyone done this? or example sketch how I could deploy the PCF8574 this way, for example a blink sketch that defines a pin on the PCF8574 as an outputs & turns on a LED connected to the pin Thank you much...

Question by rdlockrey   |  last reply

First project completed...now let's expand it!

My wife is interested in ghost hunting shows like TAPS and Ghost Hunters International. She even joined a local Paranomal Society. The first thing she wanted to buy was an EMF detector for a whopping $175. Now, I don't believe in ghosts, but I support my wife, so instead of buying her an OTS EMF detector, I decided to build her this one. Thanks Computergeek! Oddly, the first thing that popped into my head when I finished building the Arduino EMF detector was a quote from Keano Reeves from Point Break, "I caught my first tube today....Sir." It's appropriate though, in the sense that he was just getting started in the bank robbery investigations. I'm pretty happy with this build...I had a couple of issues in hardware and code that I was able to troubleshoot myself. And it all works! So this was pretty easy, even for a newbie. Now, what I want to do is add a data logger that records values to flash memory. You can probably see where I'm going with this (as a non-believer). If you remove the human element from the situation, is there still paranomal activity? Or put another way, if a tree falls down in the middle of the forest and no one is around to hear it...does it still make noise? If anyone has any ideas, tips, or suggesstions, I'd love to hear them. Thanks for a great online community! LorienD  

Topic by LorienD 

Where can you buy (cheap) expanding foam? Answered

It can expand in water, hot air, cold air, or some where else, but I have a strange craving for the stuff (as long as it's under 30 US dollars).

Question by NicOmbra   |  last reply

How do I calculate how much air expands when heated?

I want to build an air operated damper control for a wood stove. I'm thinking of a tube attached to the stack, so that the air in it expands and moves a piston or diaphram to work the damper.

Question by heathbar64   |  last reply

can i build a 4' x 8' x 5'' expanded polystyrene coated with stucco?

It needs to be able to withstand 90 mph. it will be fastened between two posts

Question by narelmr 

Jet Engine Question. Combustion in engine just used to expand air?

Lately I have been researching Jet engines. I once heard that the gas combution process was just there to expand the air being sucked in. Is this true?

Question by Kalrag   |  last reply

can i build a 4' x 8' x 5'' sign from expanded polystyrene covered with a stucco coating?

It will be fastened between two posts. it needs to be able to withstand 90 mph wind load?

Question by narelmr   |  last reply

Why wont my Stirling Engine Work!?

Ok... the thing will expand, but it will not contract. why is it not contracting??

Question by Acepilot42   |  last reply

How to wire an actuator to reverse polarity with relays only, no switchs?

I'm using the L12 S Firgelli actuator in my project. If I applied 12v and Ground to respective leads the actuator will expand if I reverse the wires the actuator will retract. I need this: When I turn my car on the actuator will expand and when I turn my car off the actuator will retract. How do I wire the relays? Again I don't use a switch. Thanks

Question by kpitao   |  last reply

partitions beyond partitions ?

I have recently bought a 1 terabyte hard drive, just curious how do i add additional partitions beyond the original 26 used from a to z ? is there a piece of software to expand the number of partitions ?

Question by dr.electron   |  last reply

what is arduino Answered

I know im going to sound stupied but what is arduino exactly like i know its a micro controller but what is it for i am a techy person but always have to build chipless boards trying to expand my creation skills thanks all

Question by theexpert   |  last reply

i'm just curious about the new format

I've been gone for a little while and instructables has really expanded but what is with the "pro" thing by some people's names and the instructable guides? p.s. i didn't know what categorie it belonged to

Question by SuperCoPilot   |  last reply

"Growing Earth" theory ...

Hi.I was wasting some time on Google Video, and I found this one.This man believe Earth (and others planets) are expanding ...According to Wikipedia, this theory is not new, and is serious. After all, if the Sun (and stars) grows, why not the "core" of planets too ?

Topic by chooseausername   |  last reply

Plans for an alternate method of calculating time accurate to tenth of second ?

This is for a competition it can not use any electrical device and it must literally fit inside a 30cm cube but it can expand in after the starting bell.  If anybody can point me in the direction of plans or kits that would be awesome.

Question by danielsb7676   |  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

Accessing SD memory on data logging shield

Hey again, I finished my first project recently and was looking to expand on the design. It's an EMF detector (https://www.instructables.com/community/First-project-completednow-lets-expand-it/) and it's working great. Now, I want to add memory and a USB charger to turn it into an self-contained EMF data logger. The project looks easy enough, but I have a question that I wasn't able to find answers for. Here's the question: Can the memory installed on the data logging shield be accessed through the Arduino USB port? On my cell phone, whenever I plug the USB into my laptop, it connects as a drive. I'd like to do the same thing with the EMF data logger. Or will I just have to remove the SD card every time I want to extract data from it? Thanks LorienD

Topic by LorienD   |  last reply

house stereo equipment hook up? how to wire extra components?

I have a reverberator, a dynamic expander, and a amp that has a eqaulizer and echo. what I am trying to do is hook up these into a home system, which consists of tuner, amp and a cass tape deck. Which plugs to use input in to which output, etc.?  Thanks in advance, Bullfrog

Question by bullfrog69   |  last reply

how do you make a motor multiplexor for a lego mindstorms nxt?

I want to expand my lego mindstorms nxt kit with more motors , and i want a multiplexor to do that. i want detailed instructions for a multiplexor that offers full control over the motors , and can read the encoder value as well. i want this to be for the lego servo motors.

Question by saberwing   |  last reply

Why can a function satisfying same boundary conditions as functions Un(x) of a complete set be expanded as ΣCnUn(x)?

This is a question I encountered while reading Introduction to Quantum Theory by Hendrik F. Hameka (Please don't worry, I'm not trying to cheat on my homework, I am just asking out of curiosity). The book states the following:      "It can be shown that a function f(x) that satisfies the same boundary conditions as the functions Un(x) of a complete set can be expanded as f(x) = Σ CnUn(x) ... If we multiply by U*m(x) and integrate, we obtain < Um | f > = Cm " This second part is fairly straightforward because ∫ U*m f(x) dx = ∫ U*m Σ CnUn(x) dx and it follows that < Um | f > = Cn Σ < Um | Un > = Cn Σ δn,m = Cn However, the first part confuses me because I can only justify it when Un(x) = (2π)^(-1/2) e^(inx) (The example of a complete set given in the book, actually) In that case, it can easily be seen that the expression Σ < Un | f > Un(x) is just the Fourier Series expansion of f(x) and thus the result is valid for the particular complete set. However this does not explain why this is valid for all complete sets: "how can you prove that this conclusion is valid not only for this particular complete set, but for all complete sets?" is my question. Thank you in advance for answering! Please feel free to post any questions of your own if you need clarification. Also, please be advised that you should not post responses on the order of "you didn't specify an interval of integration, so your question is impossible!" - if you know enough to answer the question, then you will understand why said interval is not specified, etc. Once again, thanks!

Question by Xellers   |  last reply

Mozilla wants its users to help re design Firefox

The article pretty much explains it. "The Mozilla Labs, which acts as the idea wing for the organization behind Firefox, is expanding its call for open-source contributions to those outside its base of community-minded coders and techies. Now, they want to get designers and creative types in on the deal."

Topic by Ferrite   |  last reply

What's the coolest application for an Autovent?

Autovents are elegant, amazing wax filled pistons that expand when they get warm and contract when they get cold. They are used to automatically open greenhouse windows when they get too hot. I think they could be used in something like a solar tracker or a kinetic sculpture but I've never seen any innovative applications for them. Have you?

Question by snotty   |  last reply

Non SCSI, mega storage device?

So there I was, thinking that I had heard/read somewhere that it was possible to hook up many regular hard drives (IDE, EIDE) together to make up one logical partition that was dynamically expandable. I might be off my rocker, but I think I heard of it somewhere. An example is.. your company is upgrading it's computers, and intends to throw away old hard drives (i.e. 4GB, 20GB hard drives...) If you got your hands on them, you could hook them all together and make an expandable external storage. This would mean that if you have 3 20GB hard drives, you'd have a logical 60GB partition. Your buddy wants to throw away his old 10GB hard drive.. so you get that one and add it. Now you've got a 70GB hard drive. Has anybody ever heard of this idea before? No idea how to make it work, but I think in theory it would be neat.

Topic by The Dark Ninja   |  last reply

um looking for elevator avr program. Do you have example program ?

I have to write a project for 30 floors.  but Im not good for programming... If u can write me example program for 2 floors . Include limiting switch, Door open, Door close . display floor number and  Other parameters.  So I can study the code and the i Can expand it to my project.

Question by shanakaplus   |  last reply

Would it be possible to have Arduino access a larger store of memory, say from a gutted Flash memory card?

In other words, have it interface with a gutted flash memory card via the i/o connections, and use that as additional memory space for programming controls? If so, this may open up the possibility of expanding a regular Arduino unit into something capable of much more complex tasks.

Question by Kasaron   |  last reply

Jameco led color organ expansion? Answered

Heres the color organ https://www.instructables.com/id/Bring-your-Music-to-Light-with-LED-Color-Organ/ http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2155541_-1 Now I really want to expand this. Do you think it is possible to connect sst relays instead of the leds that are on the board and then use some high power leds with drivers or strands of christmas lights?

Question by ARGMISTER   |  last reply

Is it better to get one stick of 4GB RAM, or 2 sticks of 2GB RAM?

I'm buying new RAM for a motherboard that has 4 slots. I may want to expand in the future, so if I buy a 4GB stick, that means eventually I will be able to upgrade to 4x4 = 16 GB of RAM. Is this a good idea, or is it better to split the RAM into two 2GB sticks?

Question by Ke-Bob   |  last reply

Fixing memory stick? Answered

I bought an 8GB HP memory stick a few months ago and it worked fine, but after installing a live operating system to it and re-formatting it, only 250MB will format. The rest will only show up in windows partition manager as unallocated space, and all the obvious options (create partitions or expand partitions) are greyed out. Any diea how to re-format it to get the full 8GB useable again?

Question by andy70707   |  last reply

I am looking for a starting point on changing a wired measuring device from a machine tool into a bluetooth device?

The below weblink will take you to a blue tooth measurement device that is already on the market. I am looking at expanding into an area that MFGs do not want to go.  This is measuring in the machine tool.  I am trying to get a better understanding on the components needed to get started on this adventure.  Thank you for your help in advance! http://www.marposs.com/product.php/eng/wireless_bore_gauge

Question by Tommyt39   |  last reply

Arduino TLC5940 and 74HC595?

I need to expand Arduino Uno output. After some search I have identified 74HC595 to extend my Digital output and TLC5940 for analog output. I'have also found how to connect them separately to Arduino Uno: This is the date sheet of 74hc595 This two setups share some pins, I've seen in this thread that other people use them together but I'm not sure how to connect them to my Arduino. Can you give me a hint? Libraries are also compatible?

Question by DELETED_MakiY2   |  last reply

Flash addon?

I remember a long whiles ago coming across some kind of script for firefox or safari to right click and disable certain flash banners on web sites, but not all of them. I was wondering if anyone can remember what the app was called as I can't. My issue are these retarded orbital sander ads on the front page, it keeps expanding across the page every time I visit the site here and laggs my safari for like 5 minutes until I can finally click at that close button (VERY frustrating).

Topic by Punkguyta 

Arduino output multiplier: What's a good way to get more pins on my Arduino?

I want more outputs for my Arduino Duemilanove. I want to run a simple 16x16 LED matrix but I'd need more pins. Most instructions I find use one of several chips such as the 7442 1 of 10 decoder IC, another option might be a couple of 4017 decade counters. Can anybody recommend a method that is widely used and well documented?

Question by snotty   |  last reply

3D Printing For All

Right after we hear about Ponoko, and their laser-cut designs that you can make and sell, here comes another company that offers the service of making 3D prints via its website Jujups.Their statement:We believe that "everyone has an inherent desire - to design" Design is about self expression. It is about satisfying your desires. Once upon a time only a small portion of humanity could read or write. We would like to say that once upon a time "only a few people could design but, JuJups changed that.JuJups is powered by design technology that structures design in an intelligent way, just as much as CSS and Html structures text and graphic data in an intelligent way so that non-techies can create wonderful blog graphics and web pages that we enjoy today. JuJups will do the same to the world of products.Basically, it's easy 3D printing with templates. They'll expand into more stuff later.A wider range of products will follow in the near future.JuJups is planning in association with ZCorp to expand 3D printing capacity to support the growing demand for customized objects. Customized giftware, memorabilia, toys, etc will soon be added to the list of items that can be custom designed. Many companies have now created opportunities for custom-made products, such as custom printed T-shirts, mugs, magnets etc. however, the customization is mostly in 2D.

Topic by fungus amungus 

Vortex tube should have a supersonic nozzle for efficiency; a simple drilled hole will not allow supersonic flow, right?

Scientific American had an article on supersonic nozzles in Amateur Scientist.  The nozzle needs to first narrow and then widen, so that maximum velocity is reached by the expanding air. The Hilsch tube seems to be very primitive because of details like the primitive nozzle.  Perhaps, the Hilsch tube was designed to have too much friction.  Perhaps, the tube was built to be sure it was inefficient and not very useful.  The tube can only violate the Second Law if it is built with a minimum of friction losses.

Question by R.Blakely   |  last reply

What could I put into copper/pvc tubing/pipe to make it stronger,please? Answered

I know there is a difference between tubing and pipe, but I don;t know what it is but the product I'm thinking of is the stuff you use for central heating/water etc about 13mm diameter.Along with the question/idea for a gaming chair/console elsewhere in 'Answers' I was wondering how to strengthen the piping - could I squeeze something in there like foam expander to make it *much* stronger, do you know please?Many thanks for stopping by ; I really do appreciate it ;-)

Question by kevinhannan   |  last reply

How to fit a HDVR 150 rearview mirror?

Greetings to all, First of all, I want to say WOW to all of you. Your are all  an amazing and unique group. Now to my issue in hand, I  purchased a HDVR-150 rearview mirror for my 2005 Chev Silverado 1500. The clips do not expand to fit on the pick up mirror.  I need all your input to make it fit. I was going to return it but, I know that there are a lot of creative people on this site. I hope that you will join with me to meet this challenge to make it fit.  I would truly appreciate your assist. Thank all, Len   

Question by Boriqua   |  last reply

LED Idea Contest

While we're having our own LED contest with the Get the LED Out! Contest there's another one happening across the ocean over in Germany that's being put on by OSRAM, called LED - Emotionalize Your Light. Top prize is 3,000 Euro.Unlike our contest you don't need to actually make anything for this one. Create an account and submit an idea along with a drawing or a render of what you have in mind and then it's off to the races. It's a multi-stage affair with voting and judging and opportunities to expand on your idea, but all you need to begin with is an idea. LED - Emotionalize Your Light

Topic by fungus amungus   |  last reply

What be the best programmer/development board for someone new?

I was wondering if anyone could point me in the right direction. I'm looking for a programmer/development board that your only limited to your knowledge and right now I don't have much, but will want to expand upon it without buying a whole new programmer/development board. So I'm also looking for something that will be easy to get started in also with tutorial to get you up and running. I don't want to start with something and be cut off and have to go out and buy something completely new and start all over again learning. What would anyone recommend for me and had experience in? Thanks for your help.

Topic by Demonic_Crow   |  last reply

&quot;Shaun of the Dead&quot; / &quot;Dead Snow&quot; Film Shot - Characters equipping themselves, What is it called? Answered

In Movies such as "Shaun of the Dead" or (lesser known) "Dead Snow", there is a particular technique which they use when filming the scenes where the characters equip themselves to fight the zombies. It combines close up shots of each weapon, usually with someone grabbing/lifting it, in quick succession, with a specific noise accompanying each shot. It's rather difficult to explain, but I hope you understand. My question is, What is this type of shot called? I'm hoping to take Film Studies next year at Uni, and I'm trying to expand my knowledge now. Any help would be appreciated.

Question by cosgrove   |  last reply

Solar Device Charger: No complication required?

Hey community! Anyways, so I have a fairly simple question for everyone who's solar-savvy out there today, and it's about a fancy thing called a USB charge cable. Now, I may as well be a specific as possible, seeing as it's really for one device, but I may expand this project to ellipse more than one device. Here the question: Do charge cables and USB hubs automatically (built-in) regulate voltage, or am I going to have to get funky with some or this stuff? If you think you have the answer to my prayers, or need me to elaborate a bit, feel free to respond. Thanks! Ewitwins

Topic by ewitwins   |  last reply

Can anyone point me to some Transistor Projects? Answered

I am looking to expand my experience with transistors and their uses. The reason is I want to teach my self the fundamentals of how they are used and can be used. I understand the basics of using a transistor as a switch but I feel like I don't quite grasp the scope of how they can be used. That all being said; I was wondering if any one can point me to some learning exercises using transistors that would explain some of the finer points? By the way, I am searching for the keywords transistor and projects but I am hoping there is a good one that I may have missed that someone might point out for me.

Question by atrumblood   |  last reply

Can IR light from an Infrared LED pass through semi-opaque acrylic?

I'm making a modification of the Table for Electronic Dreams (https://www.instructables.com/id/Table-for-Electronic-Dreams/) and want to expand it with white LED's that turn on and get brighter as an object above it gets closer to the surface of the table (I'll be replacing the LED's in the original instructable with blues).The only (and thus, the cheapest) way I can think of sensing this distance without cutting holes in the upper piece of acrylic is to use an IR transceiver on the circuit board and connect this to the white LED. Would this work? I'll be using .25-inch white acrylic if that makes a difference.Any assistance that you can provide is greatly appreciated.

Question by SJBarag   |  last reply


The Electronic Goldmine  has a rare to find component. "Tiny audio optocoupler is about the size of a pencil eraser and has 4 leads. These are used extensively in audio compressors, audio level controls, audio limiters, expanders/noise gates, guitar tremolo effects, guitar amplifiers and music effect boxes. Inside the black epoxy case is a 2 lead photocell (not a photodiode or photo-transistor) and a 2 lead LED. This is why the device finds extensive use in audio applications (photocell instead of photodiode). The LED requires about 10-16mA current and the resistance of the photocell varies from 150K up to megohms when the LED is off to under 400ohms when the LED is on." A

Topic by iceng   |  last reply

Is that your ring phoning?

Here's half an idea - a ring that displays text messages. It might look like nothing more than a ring at first glance, but this finger-worn device can sync with your mobile phone. It has a vibratory alert and a tiny screen that shows caller ID, text messages, and meeting reminders from your mobile. Flip it open and it converts into a headset. In the image, the screen looks glued on, but I guess that it could easily be a small piece of epaper.  As for being an ear-piece, I can't see how it would end up large enough to be comfortable or practical, yet still start off small enough to wear as a ring. Now, if the some idea was expanded to a bangle, then an entire phone could be built into a bracelet small and slim enough to be discrete. Now the embarrassing bit: I got this story off MSN...

Topic by Kiteman   |  last reply

Curtis mp100 mp3 player mod ideas

Hi all, It my first time posting and I wanted to get some ideas, I found a old mp3 player of mine its a curtis mp1000 1gb mp3 player, its a self contained usb rive and uses a aaa battery for power. I am looking to make it a bit more useful to myself, I wanted to know if anyone would have a suggestion as to how I can make this into a good voice recorder, it has a mic already. I plan on using it for lectures ect. I was hoping that I could add a rechargeable battery that recharges off the usb connection, and somehow expand the memory while leaving the buttons and their controls intact. This may be impossible, but let me know, and thanks in advance for whatever help I receive.

Topic by RichardHellyer