Ultimately Simple Calculator

Listed in the Built By Monkeys blog from Design News, comes the ultimately simplistic calculator that anyone can use. It can be found At this location

Posted by Goodhart 8 years ago


Although a rather simplistic tool, has anyone fiddle about with the ALICE graphics creator program?

Posted by Goodhart 10 years ago

cool simple designs, you could kinda change my life!

Im trying to find cool simple designs to decorate my room in...got any suggestions?

Posted by yuckzee 10 years ago

Laser pointer upgrade

Can anyone help me find any way to upgrade a simple laser pointer to a burning laser?

Posted by randomperson 10 years ago

complicated simple instructable

I'm working on an super efficient portable rechargable lithium-ion usb charging pack (if that make sense). If I were to make an instructable basically all it would say is make this PCB and solder everything. Should I just post when I'm done on like a forum? The only reason this is complicated is because it has about 30-40 electronic components.

Posted by guyfrom7up 11 years ago

knex back massager

Well i made this back massager out of knex and its very nice for when u need a massage but i dont know wheter to post it or not i will post it if people want it its very simple to make to :)

Posted by knex-4-life 10 years ago

Photocell Controlled Vibrating Motor

I'd really appreciate some help with a simple experiment I'm doing. I'm trying to wire up a CdS photoresistor to control the speed of a vibrating motor based on black/white marks on paper. I wired it up with a transistor, but it didn't seem to have much (if any) effect when I covered the photocell or shined light on it. Any help?

Posted by pharoah 10 years ago

Simple Electronic Help

I'm currently building a small hybrid solar panel car for a school sompetition(runs off of batteries or solar), and I need a bit of wiring help, here's my problem and some other stuff. I have 2 SPDT switches and 1 DPDT switch. I'm using one of the spdt switch for on and off, the other to switch from solar to battery, but i need help for the dpdt. There's 2 sets of solar panels (2 pairs of 3 hooked in series, for simplicity sake, I'm just going to say 2 solar panels), and I want to hook them up to the dpdt switch and the motor and the battery so that: I can turn on/off the motor (easy), switch between solar and battery (easy), and switch between paralell solarpanels or series (what I'm having problems with), any help?

Posted by guyfrom7up 10 years ago

Need something to demonstrate in 3 minutes

For a class I'm taking, I need to make a speech in 3 minutes that demonstrates how to do something. It could be something very simple, but being the person that I am I want it to be at least mildly impressive. My hunch was to do something computing related with my eeepc and a projector, but that idea got nixed. I'm also interested in electronics, though, and I have a lot of stuff in my junk box. Anyway, I'm not asking anyone to do my work for me, this is more about presentation skills. But if you happen to have an idea of what I can do quickly and with minimal likelihood of failure I'd be eternally grateful.

Posted by pharoah 9 years ago

DIY Ipod Amp Kits

I have all put together all the parts to make your own iPod Amp as seen in ReadyMade magazine issue 23 and Instructables.The kit includes:Velleman Amp kitSpeakerArmy Surplus Case1/8" Stereo JackWireLEDResistorNuts and Bolts to secure speakerPower Switch6AA Battery Holder w/ snap connectorThe price is $45 + $5 for shipping. You can follow the step by step instructions at: https://www.instructables.com/id/Simple-iPod-Amp/Thanks,-JoeYou must pay with paypal and I will only ship to the US, sorry I just end up losing money any other way.

Posted by joe 10 years ago

accidental syrup fermentation

I made some blackberry simple syrup the other day, and realized that it has started to ferment. I was baking bread around the same time, and it smells like bread yeast, so I imagine that's the culprit. It's currently in empty glass Izze bottle with a plastic bar stopper in my pantry, and is happily bubbling away. My questions are: How do I keep it fermenting? (does it need to be in dark/light, what are good temps, should I put a different stopper on it, how can you tell when it's done?) Has anyone fermented with bread yeast, and how does that turn out? Has anyone fermented syrup before? Does it make mead, or does it turn out more like liqueur? Thanks for the interest, and hopefully this will turn into an instructable later! 

Posted by luckbug 6 years ago

amazing packing peanuts

I was thinking I could do a conversation about this under my instructable and I probably will but maybe I can get different feed back from here but I guess you would need to check my instructable first to really know what I am talking about unless you are some one who is also sticking organic packing peanuts as an art media. https://www.instructables.com/id/Amazing-packaging-peanuts-/ AND I would love so much to here from some one doing the same stuff because I have yet to hear of any one else doing this or even if I could start to hear of people starting to do this would be cool.

Posted by thaicares 7 years ago

looking for a free simple drawing appication

I'm looking for a free drawing application thats simple like graffiti on facebook but has a few more features.

Posted by Tanners 10 years ago

Some cool, creative and simple idea's needed!

Hey people, i want to do some expiriments for school with a other dude, we want to do some simple things with, steam, max 12v electro and some more creative things! do you guys have some ideas that we can do?! we alredy want to make a hero engine and maybe the minifrig (USB) bb

Posted by mingus15 7 years ago

Get Cooking for the Fake It, Don't Make It Contest

The Fake It, Don't Make It Contest ends this coming Sunday! That's coming up soon so get out there and make some tasty food. The recipe has to have six ingredients or less and have at least two shortcuts.Prizes include Crate & Barrel gift cards, Real Simple aprons, and a chance to be published in Real Simple magazine. And all you have to do is cook one item. Fake It, Don't Make It Holiday Recipe Contest

Posted by fungus amungus 11 years ago

simple knex slinky

Just a simple knex slinky type thing a made

Posted by knexsuperbuilderfreak 8 years ago

Fake It Results?

Just curious, are the Fake It Don't Make It Contest Results up yet? If they are, anyone have a link, if not, does anyone have an idea when they will be? Thanks!

Posted by Brennn10 11 years ago

I have an interesting, but simple task at hand here!

I have just been given an old laptop to checkout, a Toshiba Tecra 8000 at that. It's a fairly old laptop and needless to say, I don't have a pcmcia ethernet cards, or any at all! I should try and aquire a crapload of them, wifi would be nice. Anywho, I'm stuck with a built in modem here, a 56k modem. I know, and have seen it done, that you can connect two computers that have dialup modems, together, and transfer data between them, and possibly share an internet connection?? I've done a bit of googling but so far all I found was about connecting two windows 98 computers together. I'm currently installing a slipstreamed version of xp onto this laptop and I have xp on here, where should I try starting with this?? I need to get an internet connection on here somehow.

Posted by Punkguyta 9 years ago

A Good Electronic Project For a Beginner.

May I ask for something which is good and nice to create for a beginner like me. I don't really have an idea what to  make. I just hope you'll help me.

Posted by imatrianidar 3 years ago

Transistor help.... very basic, LDR/LED

I'm trying to make a very simple circuit to light an LED based on light from an LDR. I have all the components, it's a white LED, I'm using two AA batteries, and the LED glows brightly when I attach it to the batteries, but when I attach it to the LDR, it is either dim or dimmer due to the resistance... I'm sure I need to use a resistor for this... I have some assorted PNPs and NPN2222As... I've looked at a couple tutorials, but none of them seem to work... does anyone know how to do this without any (or as few as possible) other components? Thanks

Posted by perkinsb1024 11 years ago

Instructables version of dummy books

Great stuff! One thing I'd like to see is a dummy book section for those of us who are technically challenged. I can handle a battery, a switch, solder and some wire, but that's about it. I guess you could call it Instructables for dummies

Posted by netcandyman 7 years ago

would this work to create a 3d display?

okay, I saw those video glasses devices they have, and as many have two screens, one for each eye, I was wondering if you could process a 3d signal to each eye, and enable the glasses to show 3d. it would be somewhat like those autostereoscopic and lenticular displays, but by separating the left and right channels and sending each to the screen for that eye only, the device should be able to give 3d without polarizing or shutter glasses. is this possible? how would one go about splitting the left and right video channels and feeding the split signals to each screen? my idea here was to try to create a simple cheap 3d display for people who use 3d video cameras and camcorders, as this would be an easy way to view the 3d images without dealing with headache inducing lenticular or autostereoscopic displays. thanks for any input.

Posted by Nyanman 7 years ago

pulsejet night run

This is the simplest pulsejet you could make and costs only Rs.110 and has got a good throttling range,which you could see in the video..No need to strain much to start this engine it starts in a single attempt. this has really got good thrust,tried to show an cloth near it but i was not able to do it,so much of force from the exhaust pipe..one day i will hook it up to a scale and find out the real thrust.. note: at the end when i tried to show a cardboard the engine got few holes in the welded parts..  

Posted by ganuganu 7 years ago

successful 5th pulsejet

Hello everybody,i think you all remember me "the pulsejet guy" atlast made my fifth successful pulsejet engine after doing some research on the design. so you all remember that i made this engine before. http://gallery.myff.org/gallery/1109952/21062011199.jpg the above engine is a 4 inch dia engine,so now with the same dia i made a highly tuned chinese type which produces more thrust when compared to the previous design..At first i failed at starting then i made some changes in the tailpipe and got it running successfully.. here is the engine. http://gallery.myff.org/gallery/1109955/23072011291.jpg And the sound produced in this engine is comparably high its annoying annoying irritating ear bleeding and produces high vibrations..so should be little careful wit your ears.. and finally here is the video take a look at it..see you all in next pulsejet video,a bigger one..  

Posted by ganuganu 7 years ago

55pounds thermojet

 Now my aim is to fix the engine(55pounds) to the tricycle(designed by me) and drive it to accomplish my dream.. here is the way how i designed the engine,after a deep research on the acoustic resonance taking place inside the engine i was able to tune the engine in such a way that it produces 40 pounds thrust then after adding an augmenter to it i was able to achieve 55pounds of thrust..This took me some 2days to design the engine.. special features:- the engine is hollow with no moving parts and produces an thrust of 55pounds which is capable of pushing a man of 70kg+kart+20kg gas cylinder..The main advantage of my design is the TSFC(total specific fuel consumption) is reduced when compared to other designs..this has got an excellent air fuel mixing capability.. here are some pictures drawn by me about the engine..   http://gallery.myff.org/gallery/1118963/view1.jpg http://gallery.myff.org/gallery/1118965/view2.jpg

Posted by ganuganu 7 years ago

Ask a favor of contributions for Japan

Dear Instructables, This is Jo (id: jojporg), a colleague of FabLab Japan. We'd like to ask you to suggest us some outstanding works for current Japan. As you might be know, we are not in very good condition right now with earthquakes (just have another big one right now). For the situation, we already have OLIVE https://sites.google.com/site/oliveinenglish/ a wiki with designs / food / ideas created in the earthquake stricken areas We think some of "Instructables" should be quite helpful/useful for us,so it would be great if you could put your "instructables" for the wiki. We could do translations, so please do not hesitate to write in English. Any help is welcome. Thank you in advance for all of your help. Best regards from Japan. --- JO, Kazuhiro Assistant Professor Art Media Center, Tokyo University of the Arts 12-8 Ueno Park, Taito Ward, Tokyo 110-8714 Japan Tel. +81(0)50 5525 2473  

Posted by jojporg 7 years ago

Newbie needing help please

Hi everyone, I'm new here, and new to making circuits. I've been scrapping them for quite some time and feel terrible about how much goodies I've thrown out in the process :(  anywho, I saved a ton of it, And today I picked up a "Futura 100 color graphics at its finest" box, it has 5 knobs on the front for: Hue, saturation, contrast, black, and white, has a power on led and reset button, floppy drive. in the back it has a 3-25pin connectors (2female and 1male) for printers, a video in and video out, power switch and 3 prong plug, fan, keyboard connector, and a 9-pin male test port?  Inside it had a dark drive and has TONS of ic chips. ill quit blabbering and get on with it, does anyone have any ideas on what this can be turned into? One or multiple projects is fine, as long as this thing gets a good use. I'm hoping to make a variables power with led display for my atx.

Posted by Ryan53090 3 years ago

Recommend some things to make with my limited kitchen?

We are remodeling our kitchen/living room and are without a place to properly cook food. We have been eating out a bit, but its been annoying to rely on restaurant hours and their food to survive. This is what I have and how I am limited. - various cooking utensils (spatulas, knives, bowls, you name it...) - microwave (pretty weak) - rice cooker (small) - Toaster - toaster oven - electric frying pan (9" and sort of difficult to get out and use due to how messy it can get) I am limited since we are using part of our garage as the "kitchen" area. But the power is limited here in that only one appliance can be plugged in at once. We tried two and the circuit breaker flipped. So we can only use one at a time. So if I want to melt butter for toast I have to melt it in the microwave, then unplug the microwave and plug in the toaster, annoying but its all we have for the next month(s). Also the space is very small, we have a counter that fits a medium cutting board, so imagine a cutting board and maybe an extra square foot as workable space. Can anyone recommend some food items we can make with these limitations. There are so many things posted, I found a few interesting ones like rice cooker pizza among others.

Posted by MrOldboy 7 years ago

Simple Animatronics help?

http://i240.photobucket.com/albums/ff32/evildrew81/people%20and%20stuff/saw_doll_tv.gif -Can anyone help me with making an animatronic mouth such as the one in the video? Can I use a RC Car servo? -Can someone also help me with a neck that can turn? Could I just use the back servo of an RC car so that it goes around Clockwise, and in reverse, Counter-Clockwise. -Is there a remote for servos that can controll up to 3-4 servos at once? Any help will be appreciated. Thanks.

Posted by ChaoBreeder 8 years ago

Simple Audio to Button interface?

Dear Highly esteemed members of Instructables, I've had this Idea in my head, and I REALLY want to make it possible. I have a feeling that doing so would be a cinch if I had any sort of understanding of wiring at all. Basically, this is my idea. I want to use old buttons (and possibly an analog stick) from a gamecube or n64 controller and wire them so that they play a note when pressed. I don't necessarily need to include the analog stick in my design, if doing so would make the project a good deal harder. I'm looking to include about five buttons. And if the analog stick was included , at best I would want it to move the note in half steps, up or down, but I could also settle for setting it to it's own four notes, or not using it at all. As aforementioned, I have no Idea how any of this stuff works, or if it is even possible. So do let me know if this is even something that someone like me can do. And if it is, try to err on the side of over explaining if you can help it.

Posted by jdiggs1 6 years ago

How to Make a Button Pushed by Another Button

Hello...please excuse me if this is the wrong forum, and please move it if it is...I figured this would be the right forum, but I'm not even sure this is even the right site. Anyways, I'm completely new to this and I need some help. Basically, I want to create a device where when I pressed down a button, a motor that is linked to that button presses another button. Then, when I let off that button, I want it to stop pressing the other button. It probably is very simple, but I don't know what motors, buttons, capacitors, etc. I need. Don't hesitate to ask me if you have any questions, I know I probably explained this horribly.

Posted by kberd7 10 years ago


Does anybody know of a schematic to program an 8 pin picmicro controller such as: 12F675 12F508 Just those specifically because they're 8 pin and I have them. Correct me if I'm wrong, but one of those 2 has 8 I/O ports, which leads to a lot of possiblities for a small area. Also this will be my first real pic project.

Posted by guyfrom7up 11 years ago

Laser conversion from pointer to burn

I could have sworn I saw an instructable on converting a regular laser pointer (low wattage type) into one that would burn (if only a little), i.e. increase it's power output, but now I am finding it impossible to locate. Has it been removed? Are there not proper tags to help me weed out the other half million laser projects? Have I lost my memory and there never was such a project? inquiring minds want to know...

Posted by Goodhart 9 years ago

Help : simple, useful electrical/electronics project ideas??

Help : simple, useful electrical/electronics project ideas??

Posted by jv_bartolome 6 years ago

Wanted: very simple project

Hello. I'm biginner and I need very very simple project, I mean the simplest possible.  I need to make something in digital electronics, something using protoboard and some diodes, transistors and resistors and use that to make something useful but very simple... can you please think of something that is so simple and let me know? I will pay

Posted by dario1 7 years ago

how to Create a simple AM/FM radio transmitter?

I would like to know how to create a simple basic fm/am radio transimtter..

Posted by Joshua_ag 5 years ago

knex simple maciene house contest

(Click on link.) who can make the best knex simple maciene house ?

Posted by knex gun and grenade maker 7 years ago

A 'simple' sound activated LED.

Soooooo, I don't have a whole lot of knowledge about electronics. But I'd like to make/have someone make a single LED bulb that lights up when a microphone recieves sound. I'd 'actually' like to fit a small microphone into a helmet's mouth section, and have an LED activated on the outside. If it's possible to incorporate a speaker on the outside as well, that'd be incredible. And even more-so, if it could change/amplify your voice on the way out, that'd be simply orgasmic.

Posted by Wrel 8 years ago

Knex gun idea

I need really good knex ideas. If i like your idea , i will make it. I will also make instructions too!

Posted by XxsonicxX 6 years ago

Simple CNC

Does anyone have any information about the three programs, Simple CNC, Simple Art and Simple Engrave. I went to the website, and there is an order page, but the contacts and support buttons are dead.  There is no way to get in contact with them. Before I checked this I actually ordered Simple Engrave and was told I would receive an invitation to the CNC forum.  But I have not received the invitation and have no way to contact.  And of course, no program since it has to be downloaded from the forum. Should I just start a grievance with Paypal?

Posted by yrralguthrie 2 years ago

Best way to lift a liquid using heat? (SImple pump designs)

I'm overhauling the design of my solar concentrator and now need a good way of lifting a fluid, so as to pour it into a waterwheel and provide rotation. I have a little solar concentrator and boiler to generate heat or steam. What's the best configuration to give as high a rate of flow as possible? I'm hoping for something in the range of 500 ml per minute, rising about 30 cm. I've briefly played around with the attached setup, which is a very basic bubble or airlift pump,  The black is my wheel, the blue a reservoir for the fluid (ethanol), the white is the boiler putting out steam (ethanol vapour) and the light blue is a mix of the liquid and bubbles of vapour which rise up the pipe and re-enter the wheel. It actually works ok, but even optimally only gives a third the rate I'm after. If necessary I can grab some valves from old bike innertubes, or other basic materials if they'll help. My previous design was to have the bubbles of steam going directly into the wheel, which was filled with ethanol. This works but requires heating 3 litres of ethanol to just under boiling. Not impossible but a bit of a hassle. I'm hoping lifting a liquid instead will be a bit easier.

Posted by SolarFlower_org 8 years ago

Sustainable living made easy

Sustainable living is easy and cost-free if we can only open our eyes and look around us. They are many things which we can make use of and make them into beautiful items. It would be ace with these items are useful too. Please support this cause by frequenting our site and even donating. www.projectfidgetyfingers.blogspot.com

Posted by suzene 11 years ago

35pounds thrust thermojet

Hello everybody here iam going to show you the 10% throttle of the engine and 40% throttle of the engine. At 100% throttle 40pounds thrust is got. But unfortunately my LPG valve has got some restrictions so iam unable to show you guys the peak thrust. engine at 10% throttle http://www.youtube.com/watch?v=6WBPjB0kJYI engine at 40% throttle http://www.youtube.com/watch?v=izwCsXbhUVM

Posted by ganuganu 7 years ago

Help, Newbie(atm) question.

I Tried!!! well what i mean is i read and read but no use, Im pretty new to things although do have basic understanding about cuircits, well physcs anyway... think i may have just confused myself with all my reading. Also I have forgotten allot of terms and definitions for things, so please be patient, as i am a fast learner BUT a practical hands on learner and struggle with a bit of theory. Let me explain, i want too design and build a simple remote controlled switch to turn on/off a lamp. now its 230v as i am in uk, so thinking.... Are there any certain components i will need to take into account with the high power load? guessing a capacitor....or are some of these really good existing designs ok for uk power. Help, as u can see from text i don't even know how to explain/word things =s But if someone can point me in right direction to get me off and running things will snowball and before you know it, I wlil b giving out advice lol. Really hope im not making a dire first impression here, but patience is a virtue lol. P.S Great site admin..... im on every and will be completing several projects in due course. Cheers all

Posted by scott_shot 6 years ago

A simple decision maker

Hi    i am a very confusing guy and cant take decision easily so want to create a simple decision maker which helps to make decision whether to do or not

Posted by Rohit.panwar001 5 years ago

Simple Paper Fighter Jet (TURRETS!)

Check my first instructable out!

Posted by myselfandi 9 years ago

Real simple contest -- Whoops...

Wait, since most people don't change their licence on their instructable, and since the default has "non-commercial", when its featured in the mag., wouldn't that breech the licensing?

Posted by zachninme 11 years ago

Simple, efficient, low-cost, solar energy equipment

I am looking for a DIY simple, low-cost solar water heater and solar light that will work in any kind of weather and still be able to supply atleast some working heat and light. Please suggest.

Posted by rseni 9 years ago

Cheap, simple, Project - Any ideas?

Hi all, I  am looking for some simple projects that I could do. First of all, it needs to be cheap. I am 14, and get hardly any money (14$ a month in allowance) so, I need it to go as far as possible. The simple part is optional - Just needs to be something I can do - Even if it takes lots of time. I guess Im not being very clear but I am looking for project ideas that are first of all - cheap. I already have soldering equipment, and resistors and capacitors  scavenged from trash (Stuff that can be created free of cost is best). Thanks!

Posted by schumi23 6 years ago