Building a robot car for carrying objects up to 50# weight

Working on a low profile robotic car that is semispherical that can carry up to 50 # load.(sack of rice or 5 gallon water). It will have sides that can open up like flower petals and the middle portion can telescopically lift up to 30 " or more. This robot will follow me around and can be programmed to deliver things inside the house, or from garage to the house. The mechanical portion I had already started working on but the I had no idea yet how to automate this creation. Would like to solicit some advice from the group 

Topic by redjant44   |  last reply


Yet Another Sound Reactive LED Thread!!!!

First of all caution with the diagrams available on the internet I just fried a perfectly good and expensive car amplifier.  Can someone please drawn me a sound reactive led strip circuit (as simple as possible) that will work on my car RCA or Speaker Outputs. without frying anything, I can't afford more damage.

Topic by RaptorHunter   |  last reply


How do basketball arcade scoreboards work?

Hey everyone, I am looking for some insight on how basketball arcade systems keep track of  scores. Some use infared sensors and others use clickers/triggers, but I have no idea how/where they're implemented. Here's a popular system: http://www.lifetime.com/gallery/sporting-goods/basketball/double-shot/90056 I am doing a project which will require me to use an arduino microcontroller and thought this would be cool. Output would be on a 3 digit led display, hopefully noone scores above 999 lol Thanks

Topic by prodigy9   |  last reply


Arduino messaging system

Hi everybody, Not long ago I had an idea about a messaging system based on a simple client-server architecture. Nothing new so far, but my idea was to optimize any exchanged message or sentence for a 4x20 LCD display, so that an arduino client could be easily coded. In fact, I liked the idea so much, that I already wrote a server prototype, as well as the arduino client. I gave this project the name "C0ldWater". The client is based on an arduino board, which uses an ethernet shield for internet connectivity, a 4x20 lines LCD display as an output device and a ps/2 keyboard for user input. I also bought a VPS, on which I run the server and a blog. You can reach it at www.c0ldwater.com and you will find all information and instructions to build such a device, as well as all code to be downloaded. So why am I posting here? Easy question, so here's my easy answer: because I already went through a first sort of alpha testing on my own, but I still need some help from anyone who's interested in this project, to get some feedback about his/her personal user experience in order to understand what sort of modifications I eventually need to implement. Nothing difficult or boring, just connect to the service and use it as a normal user: register, read, send, forward, delete or list messages and so on. I'd like to receive any suggestion, criticism or just your first impressions about the project. For those interested, but without the required hardware, I also wrote a simple linux client that can be downloaded from my site. It just creates two threads, one for receiving and one for sending data. Anyway, if you're still stacked with the win OS, you can download "netcat" and use that to connect to c0ldwater: "nc c0ldwater 8889" or "nc 5.9.252.156 8889". Thanks in advance to all of you! Cheers

Topic by c0ldwater 


Search filter on winning Instructables

Unless I have missed it, I think it would be nice to have a search feature to help narrow a search to contest-winning instructables. It could be a an extension to existing selections: Recent, Popular, Featured, Views, and...Winners? UPDATE SEP 21: Also it would be nice to see the "prize" icon below the thumbnail listing of instructables next to the featured "star" icon.

Topic by techbitar   |  last reply


5 volts ballast

Can I have the circuit for the 5 volts cfl lamp ballast. Please! Thanks.

Topic by remyjovero   |  last reply


Pro signup not secure?

I was recently asked to renew my pro subscription via email.  When I visited the renewal page, I noticed that I am asked to enter my credit card information on an insecure web page (http vs https).  Please fix this.   If there is a secure page already, this should be the default.

Topic by smtfish   |  last reply


Redesigning the soldering iron!

Hi, we’re a team of engineering undergrads hoping to redesign the soldering iron. Specifically, we’re looking at making it safer and more usable by younger teens and children. We’re looking for any feedback or advice you might have, especially if you have kids, so if you can spare a few minutes to fill out our survey, that’d be awesome. Or if you have any questions, feel free to shoot us an email at: solder.otter@gmail.com. Thank you for your time and input! https://docs.google.com/forms/d/14cAsPIbiU_jf09aFBU03nplbYuBtr0JpTPzrWEp4OFw/viewform also, does anyone know why there is so much metal exposed towards the tip?

Topic by solderotter   |  last reply


Where to source quality LEDs?

Does anybody have suggestions where I can get quality LEDs?  I'm planning to build something using 1-3W diodes, and I see a lot on Ebay, but not sure what I should be looking for when deciding.

Topic by awascholl   |  last reply


tomato harbor for vine tomatoes

Looking for plans to build harbor to grow vine tomato

Topic by poundcake45 


Links in comment replies not working?

New embedded links in comments or replies do not take you to the link when you click on them. Nothing happens when you click on the orange text. I think this probably affects new comments/replies since the last site update.  You can create the link in the editor, it turns blue and then when you preview the comment it is the familiar orange text.  Links in older comments seem to work. Using Chrome/Windows XP and I guess we can no longer embed videos in comments...I see what you did there. 

Topic by caitlinsdad   |  last reply


Random "Draft" Instructables in different languages

All of the sudden I have 5 random draft instructables that are in all different languages? Hacked? Bug? I mean it's kind of cool but I don't know how it happened or if it's safe.

Topic by AnthVale   |  last reply


external battery charging option for Asus EP121 tablet pc

Hello all, A friend posed me with a problem as to how to extend his field time with his Asus EP121 tablet pc. It does not have removable batteries so the option appeared to be to come up with an external battery pack to power the tablet when the internal battery got low on charge. The output of the DC charger is listed as 19.5 V DC / 3.08A. A suitable option to me appears to be a Dewalt cordless tool battery pack. The unit in particular is the DCB200 20V MAX lithium ion battery pack, spec'd at 20V at 3.0AH. Aside from having to come up with an interface between the connector on the battery pack to the jack on the tablet, is this idea advisable or viable? Thanks, Gutbucket gutbucket@bell.net

Topic by gutbucket 


Update to my Instructable : Constructing A Small Fish Pond In The Garden

My Instructable Constructing A Small Fish Pond In The Garden, received some negative comments from couple of members. I reproduce a part of comment here from one of the honorable member : Quote " I do not recommend that anyone follow these instructions for a fish pond. There are major problems here. If you want to build a water feature in your yard, this may be passible, but this is not sufficient for a fish pond. " Unquote My small fish pond without any aeration and filtration is still thriving. My heartfelt thanks for the support provided by finton. I have posted an earlier update after three months and again a new update exactly after five months today (27 Jan 2014)... My water plants have flowered, my fishes are healthy and pond liner I used is in perfect condition... cheers

Topic by antoniraj   |  last reply


Looking for a creative idea regarding this glass bottle!

Hello there! I am looking for a creative use or idea regarding the glass bottle you can see in the pictures I attached.  I know I want to do something with it, but I just have zero ideas what I can create with it.  In the first picture you can see the glass comes with a "foot", but as you look at the second picture you can see this is detachable. Let me know if you can think of anything, I'm interested to see what people can come up with!

Topic by Rhaenon   |  last reply


How to make arduino react to a certain frequency

Hi, I'm new to arduino, and I was wondering if its possible to program arduino to react to certain frequencies. In other words, I was wondering if its possible to program arduino to go off if you have a certain note played. Also, as a side note, I was wondering if its possible to reduce a voltage. I have an amplifier that runs off 24 volts and I was wondering if I could redirect some to power a 12 volt bluetooth chip? Thank You for all your help!

Topic by Fozzibehr   |  last reply


Photo Arrangement

HI again.  You know, the new instructables page layout is really nice, no complaints.  But I really liked one aspect of the previous setup, specifically the photo arrangement.  I liked being able to place a photo anywhere in the I'ble that I wanted.  It allowed you to visually represent a specific thought without having to say "see picture 4", and then the reader has to scroll up and find the picture, possibly losing the context of what was being explained.  Is there a way to compromise what we have now with what we had then?   Any thoughts from other members?

Topic by Attmos   |  last reply


I want to comment on a particular 'ible, but can't

Because it has signed me out. Or perhaps more accurately, just doesn't register that I am signed in. Hi Everybody! The Instructable I wish to comment on is this; https://www.instructables.com/id/Athena-The-Global-Car-Tracking-System/ I have tried logging in on that page, attempting to post comment and use the prompt to sign in. Signing in elsewhere on the site and navigating to the 'ible in question, when the "You" (signed in) at the top right, turns to "Log In" (Not Signed In, Duh :/) Any ideas on what could be up? Not much more I can do except try again a little later and hope it's a transient bug. Anyhow, there you go. A bug. Swatter please! :)

Topic by brenryan   |  last reply


What do the polls tell us?

I thought I'd take the time, this wonderful Saturday evening, to talk to you guys a little bit about the polls that you will find on my website. In specific, I want to analyze with you what exactly these polls tell us. To do that we are going to start with the first poll I posted and work our way to the more recent ones (which, if you are looking at my website, would be going from the bottom of the page to the top). Poll #1: How Many Bands (On Average) Do You Put on Your K'NEX Gun? 40.91% (which is 18 votes) said that they usually put two bands on their K'NEX gun. 22.73% (which is 10 votes) said that they usually put 3 bands on their K'NEX gun, and the rest of the numbers go down semi-proportionally. Now, what does this tell us? Well, one of the things that we could take away from this is that if your K'NEX gun does not operate well with only two bands (whether they be #32s or #64s) , you probably should try again. In other words, your gun should be accurate, powerful, and smooth running with at most / at least 2 bands. And, to be honest, this should apply to the majority of K'NEX guns, which is part of the reason why I am not a huge fan of the NAR...   Poll #2: Rod Ammo, Connector Ammo, Mix? Now, to be honest, I knew that this was going to be rather a contentious issue. I mean, after all, doesn't the K'NEX community go around and around about which ammo type is best? I pretty much expected that the results would be rather even, so let us see if I was correct. 51.85%  (14 votes) said that they prefer rod ammo, 33.33%  (9 votes) said that they prefer a mix of rod ammo and connecter ammo, and 14.81%  (4 votes) said that they prefer connecter ammo. Again, what does this tell us? Well, if you are a people pleaser, then you might want to have your K'NEX guns shoot rod ammo. If you do your own thing (like most of us do) then... well... do your own thing. I personally prefer either a mix of rod and connecter, or connecter. I hate rods. They spin much more than mixed ammo, and have to many ridges for my liking, but all the same, do your own thing.   Poll #3: Do You Think That a Full-Auto K'NEX Gun is Possible There is not much to say about this poll, so here are the statistics: 66.67%  (18 votes) say "yes," they think it is possible. 22.22%  (6 votes) say that they think it is not possible, and 11.11%  (3 votes) say that they think it is possibly possible... XD   Poll #4: At what time of the day / week do you usually mess around with your K'NEX? Again, there is not much to say about this poll, except that most K'NEXers are, as it were, weekend warriors. 37.93%  (11 votes) say that they "play" K'NEX on the weekends, 31.03%  (9 votes) say that they use their K'NEX in the afternoon, 24.14%  (7 votes) said at night, 3.45%  (1 votes)  said that they build during the weekdays, and 3%  (1 votes) said other. Other, what other? Also, 0% said that they use their K'NEX in the morning. +1   Poll #4: On average, how many guns do you build per year? I posted this poll 'cause I really was interested to see who did what. 34.78%  (8 votes) said that they built between 10 and 15 guns a year, 26.09%  (6 votes) said somewhere between 1and 10, 17.39%  (4 votes) said that they built somewhere between 30 and 50 guns a year (I would be among this crowd), 13.04%  (3 votes)  said other, and 9%  (2 votes) said that they build between 15 and 30 guns a year. Interesting.   Poll #5: Do you think that a black firing pin will actually get better ranges than any other firing pin of the same size? I was truly interested to see what people would say on this issue, 'cause some K'NEXers would hold this view to their last breath. The poll shows that 52.38%  (11 votes)  say “yes,” 28.57%  (6 votes) say “no,” 14.29%  (3 votes)  say “It depends on the gun,” and 5%  (1 votes) say other… Other? What do you mean other?   Poll #6: Internal Magazine Pusher or External Magazine Pusher? Which do you prefer? This is another thing that us K’NEXers argue about, I am personally in favor of EMPs, but others disagree. 65.22%  (15 votes) say that they like IMPs, 17.39%  (4 votes) say EMPs, and 17.39%  (4 votes) say that they don’t like either (I would also be a part of this group, which may sound weird, but is nevertheless true).   Poll #7: Do you think it is weird / arrogant / silly that people favorite their own instructables? Now here is something that we can all relate to. The poll shows that: 55%  (11 votes) say that they do think it is weird / arrogant / silly that people favorite their own instructables, 35%  (7 votes)  say that they don’t think it is weird, and 10%  (2 votes) say “other”/they are not sure. I personally think that it is weird / arrogant / silly that people favorite their own instructables.   Poll #8: Do your parents / relatives like your hobby of "K'NEX-gunning?" 40%  (8 votes) say “Yes,” 35%  (7 votes)  say “Sorta-kinda,” 15%  (3 votes)  say “I don’t know,” one person said “No,” and one other person said “Other.” All I can say is that we are not to respected/liked in the Instructables community.   Poll #9: Do you like replica K'NEX guns (K'NEX guns that are made to look like a real firearm and shoot)? I posted this poll because I have heard lots of comments that amount to “I am tired of seeing ‘here is what I build from CoD’” but apparently, people aren’t THAT tired of replicas: 82.35%  (14 votes) say “yes,” and a mere 17.65%  (3 votes) said “no.” Ignore those comments where ever you find them, they are just mumbo-jumbo.   Poll #10: Which do you like more? 40%  (8 votes) said Replica guns, 40%  (8 votes)  said Performance guns, 10%  (2 votes) said Model guns, and only 10%  (2 votes) said that they like concept guns the most. Yet, this is hard to believe, as concept guns probably get the most views… Hmmmmmmmmmmm.   So there you have it, let me know your thoughts. Note: This might have typos and bad grammer as I did not take a whole lot of time to look it over. Bring that stuff to my attention and I'll fix it.   -The Red Book of Westmarch

Topic by The Red Book of Westmarch   |  last reply


i don't know where to start???

Hey guys girls robots haha i hava a lot of electronics stuff and i am playing and thinking to build a project but every time i build something i stop with building so maybe you guys girls or something els can say what can build with my electronics  i have this stuff Arduino uno Arduino mega Arduino pro xbee different shields for arduin raspberry pi keypads lcd  relay boards ir remote and a lot other stuff but i want all my electronics to connect it in a big project, so my question do you know something create of have some ideas to build something awesome i was thinking a bout star trek and looking for the control panels to build something like that or better sorry for the bad english  greetings marijn  for questions you can mail me or put something on the forum. >marijn-elektro@live.com< thanks 

Topic by mvan h1 


iron man suit ideas

Hey Guys I am thinking About to build à suite likje THE picture  but i am thinking à lot of people is making à suite like ironman but is made of foam but do you want to make it from any kind of metal i do. i am thinking à lot of à Helmet first with à screen inside.... we must thinking of cooperate share picture or something Lets start with THE real stuff  Greetings from Holland  Marijn 

Topic by mvan h1   |  last reply


inverter circuit

I have several BD139 transistors, several types of transformers, blocker diodes and 40pf 50v capacitors. can anyone show me a simple schematic to convert low voltage to high voltage?

Topic by buddybro   |  last reply


disposable camera charging circuit

Why doesn't the transistor in the inverter circuit of the disposable camera ever heat up? dont they need heat sinks? can anybody pls show me a schematic of a simple disposable camera charging circuit? pls show the transistor number and type

Topic by buddybro   |  last reply


If you have one tool to use to make a wooden sword what would it be?????????????????????/

Like a axe, knife,sandpaper, others. can be machine use.

Topic by josefu0   |  last reply


Of props and guns

Hmm... I'm sure that I posted this before. Anyways, I was planing to make a (non-working) revolver 1:1 scale. I kind of have an idea on how to make it, I just have a problem developing a plan to make a double action trigger and a rotating cylinder with the cylinder popping out of the side with a release button. A picture diagram would really help. Also: I would like to hear suggestions for material, mainly for the handle. I'm kind of new to this sort of thing.

Topic by Ausm   |  last reply


Coilgun, Marx Generator or Voltage Multiplier

I am building a coilgun and I have constructed a coil with several thousand turns, an ohm meter measures its resistance at 300 ohms, so I am having trouble powering it, I ran 240v through it and got nothing. According to my calculations, I need to run 1000 volts at the minimum through the coil in order for it to work. From my research there are three ways to do that: 1)A really big transformer (sub optimal for many reasons) 2)A Marx Generator 3)or with a Voltage Multiplier. Now I realize that you are supposed to connect the voltage multiplier to the Marx Generator, but wouldn't it be easier to just to make more multiplier stages and remove the Marx Generator entirely? I've seen voltage multipliers go up to 15kv, which is more than enough.

Topic by geekman2   |  last reply


Bugs of Instructables in IE browser10

When openning instructables in Internet Explorer 10 - I get two types of Bugs. 1.- If I open the YOU tab I get the dropdown menú but part of it is bhind the dark ribbon 2.- When I open a Project ont the topics and the headers I get some headers displayed on top of other See Pictures of my screens I have been using the same IE for about 2 years but I had not those problems before, actually they started to appear a few weeks ago. Any hint or help or Fixing the Bugs will be welcomed. Thank you all and God Bless you Carlos Arguello

Topic by Happy2Think   |  last reply


Fully-Function Retractable Grappling Hook Gun Vs Jetpack

 Hi. I'm new to this site that I discovered on my quest to create the above mentioned item. A fully-functional retractable grappling hook gun. Vs, however purchasing a jetpack. I need blue-print of how to make a strong enough retractor, I already have a grappling hooking in mind. Here goes.  Nothing like planning to dawn a cape, just like to keep up with the times. Been into mobility for awhile.Thank you.

Topic by Jedi_Pimp   |  last reply


Trying not to be history. 12VDC 500ma power supply to 12VDC 300ma computer fan

I have a project in mind which would utilize a 12VDC 300ma computer fan. I would like to use an old peripheral wall plug style power supply. I have one rated at 12V 500ma which I think would work fine.  Problem: How do I determine +/- if I cut the male plug off of the power supply without shorting out my apartment building or spending the weekend in intensive care? The cord is marked along one lead with a gray "dash". 

Topic by blackbird03   |  last reply


Skype blackmail!

Hey is there a way to find out details of someone on skype that try's to blackmail u even if it's a fake profile???

Topic by Mykl89   |  last reply


Questionnaire for Dissertation

Hello to one and all, I was hoping if all you great makers and crafters out there could help me with my university dissertation about the rise of the maker movement in the last decade. If you could find the time to answer my short questionnaire, www.surveymonkey.com/s/5P2KBB2 this would be most appreciated. Thank you Ben C

Topic by Sneblot   |  last reply


Contest Archive Page has hellip; appearing in some places

Hi Instructables! I was looking at all of the cool contests (https://www.instructables.com/contest/?show=ARCHIVE) when I found a little bug! It happens twice (as far as I know): In Sep 2012 and Jul 2011, for the link for the Halloween Draw and Paint it Contest and the Green Living and Technology Challenge, respectively. If you take a peek at the images you can see what I am talking about. It seems like "&hellip;" was meant to be an ellipse symbol but it didn't quite work out. The appearance occurred on both my Mac 10.8.3 with Chrome 29.0.1547.65 and on my Nook HD+ (BNTV600) v. 2.2.0 with Chrome 32.0.1700.99. The "&hellip;" can be reproduced by visiting the link posted above and scrolling down to Sep 2012 and Jul 2011. There you go! Blue Ice

Topic by blue-ice   |  last reply


Instructables app behavior (Bug?)

I've been using the Ibles app on an Android (V 4.3) phone for a month or two. There's a lot to like about the app experience. For instance, the app makes it super easy to follow other users who are following your account... Super easy to click "follow" on many accounts in one session. I'm not really a social networking person, by choice, so I never paid much attention to following. Never cared about the number of followers--or hits, for that matter. I'm sure this is a breach of social networking etiquette. Guilty.  So-- it's a pain to "mass follow" other users in the browser interface (yeah, wouldn't be problem if I'd kept current with following)--go to you:subscribers, click on the account, select follow, move backwards to the you:subscribers page, repeat ad nauseam, with all the load times associated. On the app--load the followers page, then click, click, click on the icon next to each account. Pie easy. But there are some odd app behaviors: One: the app Followers section doesn't sync with the normal online interface. I.E., more followers in the browser online than on the app. Two: the last "follower" in the list doesn't display correctly. Shows as "not followed," when clicking on the user's account shows that I am indeed a follower of that account. Maybe there's a sync lag that would explain this...if so, it last several days.

Topic by gmoon   |  last reply


Brains for a robot?

It's time I turn yet again to the forums for advice, this time on recommended robot brains! [Serious] I have a project for a class requiring design, construction and programming of something. More than half of my fellow students are doing clocks of some sort, be they binary or nixie tube. A friend of mine is doing a holonomic robot, and my plan was to do a walking robot, based on ideas like the WowWee robosaurus, using a simple tail and head to balance and few motors to run it in comparison to any conventional biped. As far as servos, I was hoping to use something like the HerculeX or other serially connected servo, so I can just daisy chain the few I would need and simplify the wiring, as well as get experience with serially addressing things. Planned sensors are 2-4 IR rangefinders, 2-4 wire whiskers and one tilt switch to turn it off if it tips over. Sensors I'd love to add would be something like a super basic camera for simple machine vision if I ever learn to code that well, but I doubt that will be the case; and the LIDAR thing from the Neato XV-11 which is again unlikely. Things I was looking at for super basic use included: Arduino, HC11 MC (backplane type), BASIC Stamp, PIC. For a little more complexity I was seriously considering things like the Freescale Tower ARM, Gumstix or other. I'd love to have the serial servos, sensor assemblies and the camera and have integration with Robot operating system through an onboard computer, but I have no idea what to use to setup ROS or what would be best, or if my plan of parts to use is even good enough. In other words, what ideas should I throw out as impossible or what would I need for say, ROS use? Ideally i want to do a semi autonomous robot, so that i don't have to manually direct it everywhere, but I'd still be keeping an eye on it when it's running so it doesn't break something. If I understand ROS correctly I can use an external computer to control it, but I can also let it be autonomous? Coding math and logic in the machine language for a Z80 computer doesn't really prepare for robot building, although the class is basically a teach programming basics and throw you into the deep end. [/serious] Thank you in advance for your help!

Topic by Nyanman   |  last reply


Looking for constructive critism

I have not written an 'ible in a long while, but was recently so inspired I wrote...   https://www.instructables.com/id/Make-A-2D-Infinite-Runner-with-Unity/ Luck would have it that a game contest opened during my building of the first prototype (pre write up, to get things all worked out), which spurred me on even more. Anyways, I am wondering how I missed the mark completely, not even worth a feature. I have had way lesser projects featured....and well, I was only inspired to write this to share. Anyone who has been writing here for any amount of time knows that you need to be featured to be seen. I gave detailed step by step instructions with many pictures well commented...or thought I did. I did something original (Not many game making tutorials here, only 2 other unity ones, and they are on older versions.) I thought the demo game download was a nice touch.  So I am curious for suggestions on how I could spruce it up enough to be considered as a feature. I believe that people would enjoy the topic, and more importantly, I feel people would like to make this or use this as a springboard to their own version. Was using the robot a big faux pas? I see so many other features that use him and thought it was a good idea. Is the game itself that visually unappealing? Perhaps foolishly , but I love the look....I was...even more foolishly...proud of it. It wasn't something I just knocked out, but rather something that a lot of time went into. Time that was truly wasted if it is never even seen. Discouraged. Any suggestions  to how to make it better would be welcome.

Topic by fjordcarver   |  last reply


Electric typewriter to USB keyboard

Is there an instructable that is basically universal that show how to convert and electric typewriter to a USB keyboard?

Topic by metalshiflet   |  last reply


Custom made titanium ring

Hi, Im looking for advice on making a titanium ring for my girlfriend. I choose titanium because shes allergic to stainless steel.  I was thinking of buying a small 3x3 plate or so so I have room to make a few if I screw up. depending on thickness..? Idk what thickness to choose. Then I would need to drill out the inside, and figure out how to size it to her finger by her size.  Then I would have to just shape it somehow. sandpaper? idk. I doubt that but I dont have a lathe available..  so thats why Im here looking for advice, and then after shaping I need to use different compounds to buff and polish it right? 

Topic by 'earl   |  last reply


Large Scale Water Level Indicator

Hey everyone, I hope im posting this in the right spot.  I run a large farming operation and get my water from a well that pumps into a large storage tank about 10 feet deep and 6ft diameter.   Because the well is very old I'm not able to add things like a float that will turn it on or off for me so I'm constantly having to check the well though out the day and if the cows are more thirsty one day they can drink the storage tank dry and that causes me problems with my pump, or if i leave it to long it will overflow and it makes a terrible mess. So im wondering if there is a way that I can wire up a water level indicator in the well-house and have a light board in my house that shows me the level of the well.  So for a 10 ft deep well id have an led light for every 1ft or so and when the water level gets to the top foot a buzzer would go off and when it hits the bottom foot or 2 ft then a buzzer would go off.  Ideally a wireless transmitting to the house would be best but I have no idea how that could work.  And wired would be hard with the well house being a few hundred feet away from my house.  I've done a lot of googling and haven't found anything that would suite a large scale water tank like this.  I purely want to be able to see in my house where the water level is and have it warn me when its too high or too low.  I apologize since i don't have a lot of experience in electronics.  Any help is greatly appreciated as i have no idea where to start or if its even possible.  Thanks guys!

Topic by rpfarm25   |  last reply


Something to do with an oldcd player

Hi everybody! Okay , Let's talk I have 5 old cd players here that I can break , open , use the parts and etc. and I want to know if there's a cool thing to do with these eletronics they are working , and there's no use for them, so could someone show me any cool ideia to do with them ? I tried to do a amplifier to my cellphone to listen to music here,but it didn't work as well I wanted Sorry if the topic is at the wrong place , and I have already took a look at the site, and didn't find some nice ideia :o

Topic by mcamargo 


A gun idea i cant work out

I been trying to make make this weapon but failed every time its the CBJ-MS made by Saab Bofors Dynamics here are the stats Weight 2.8 kg (empty) Length 363 / 565 mm Barrel length 200 mm Cartridge 6.5×25 CBJ-MS and 9×19mm Luger/Parabellum Rate of fire 700 rounds/min Muzzle velocity 2,723 ft/s (830 m/s) Effective range 150 m (6.5×25 CBJ-MS) Maximum range 400 m (6.5×25 CBJ-MS) Feed system 20, 30 or 100 rounds Sights Adjustable open sights this was copied from Wikipedia

Topic by headlessknight   |  last reply


I need a polaroid or kodak fun saver disposable camera in Pakistan.

Please help me i need to make a stun gun.

Topic by Hafiz Mohammad Shayan Tariq   |  last reply


Silhouette from photo

How to make a silhouette from a photo on my iPad  I want a silhouette of our 50 Chevy Pickup to weld on to our rod iron fence thank you

Topic by HowardSue   |  last reply


Typing in the Step-by-Step Editor

There is a bug when typing in the step-by-step editor. The cursor blinks over the letter not to the side of the letter.

Topic by BenjiDaa 


Some new stuff i got

So recently my dad wanted to throw away a old tv we had that had a bad cord (yeah we could of easily replaced the cord but be have enough tv's..) and i remember seeing plasmana's plasma speaker a while back and that it used a flyback transformer, so i ripped the tv apart taking the pcb with everything on it, speaker, and the coil thingy on the tube, since it was the first time i took one apart i had cliped the magnet wire winding so thats almost no good so i just got rid of that, and then i took apart 3 other monitors i have gotten over the years, one had a set of speakers inside it, and that was interesting to use. and a while back my friend gave me a old 5cd/radio stereo, i would of just kept it using it for the 5 disc changer mostly but the door was broken, and didnt move well at all, so i scraped it and used the speakers. Oh and theres a PSU in there i ripped apart a while ago, i have another but its stored away currently. Anywho heres just a view of what i got, any ideas on what i should make out of all this?

Topic by knexsuperbuilderfreak   |  last reply


Living salad, makerbot songs, and noodle!

My first day at Instructables, I found myself sitting on a chair fabricated by the guy next to me, listening to plans for a living salad which would grow through your plate, fertilized by worms below the surface and a stained glass window made of dried fruit, trying to focus on absorbing all the information Vanessa and Noah were dishing out. Just beyond loomed the amazing fabrication facilities, with rows of 3D printers, zillion-axis CNC machines, a stocked electronics room, every kind of adhesive you could dream of, and even a test kitchen! It was a makers dream, Pier 9 had the material and equipment resources to allow us to realize nearly any idea we could dream up, and dream we did. It was immediately clear that the one month my collaborator Kyle (https://www.instructables.com/member/kylemcdonald/) and I had planned to spend there was not enough. Sadly, it was all we had, so we got to work immediately on Noodle, a little robot with the I/O of a machine but the thoughts and feelings of a human. I could go on about the shop at Pier 9, but the thing that really made the experience for me was the people. Hosting 10-12 AIRs at a time, the studio was always full with people building crazy things. One day we'd experiment with Nick's instruments fashioned from rocks, sticks, and water jugs while sampling cocktails from Ben's machine and Rima's cricket ganache, the next day we'd admire Aaron's work on hoodies that zipped around your hands while being serenaded by Andreas' makerbot which seemed to be singing the future. We were all so excited and inspired it wasn't unusual to find half the group there all weekend long or into the wee hours of the night. I won't go so far as to say anyone slept the night there, but...  Not only did we get to hang out in the AIRea, but we also got to know all the others working at Pier 9. This was a building full of people willing to chat about anything from caustics to contests, lend you their skateboard so you could learn how, or demo their latest projects. Vanessa and Noah couldn't have been more supportive and helpful, and it was so inspiring to run into them in the shop on weekends hacking away on crazy things of their own. With so much going on, we sometimes had to work hard to tune it out and stay focused on our Noodle. Luckily, Kyle and I had worked together before and we were able to divide and conquer pretty productively. Kyle handled the fabrication aspects, spec'ing all the hardware and designing and lasercutting then 3D printing the physical enclosure for Noodle. I was heads down on the software trying to hook up our raspberry pi to Amazon Mechanical Turk, speakers, a display, a camera, and an interface. Thankfully, the long hack sessions were broken up by Vanessa coming by to peek at my computer over my shoulder and ask, "what's taking so long? how hard can it possibly be!" ;) I will end this post here and get to work finishing up our instructable before Vanessa hunts us down. If the specifics of our project are a bit cryptic still, all will be revealed with the instructable post (see attached pictures for more mystery). And to all of you considering applying to the AIR program, DO IT! If you are a motivated, curious person with energy and ideas you will have a blast. And the weather is ok, too. Thanks Vanessa, Noah and Instructables!

Topic by lmccart   |  last reply


LED Circuit Help

Https://www.instructables.com/id/Romantic-LED-Heart/ I would like some input on making this using a 555 timer and POTs to make an adjustable fade in/fade out circuit while running on a 9v battery and using a pressure switch to turn the LEDs on when the box is opened.

Topic by YoungOne453 


transformer!!

Hey guys this is rush... i want to make a high voltage power supply made from a charger and a trans former this is how i'm planing i will connect the output of the charger to the real output (where the plug is connected ) of the transformer and connecting the real input (where it originally lowers the voltage) meaning to say  output(ch)--->input(trn) the output of the project is the real input of the transformer  guys pls. help me as fast as you can  tnx - ~_~

Topic by crazy lazy man   |  last reply


Help me!!

Https://www.instructables.com/id/plugduino-Arduino-based-120-Volt-outlet-controll/ In this Control circuit schematic They explained about sensor inputs (the sensor inputs are connected to the analog inputs on the Arduino board ( A0, A1, A2, A3 ). The input voltages on these pins are converted into a 10 bit integer value such that the range between 0V and 5V and translated into a value between 0 and 1023 respectively. The ideal connector thus contains 3 inputs per sensor ( 5V, GND, A ) resulting in 12 connection points.) I need clear explanation about this and what type of sensors they using and how they connected ?? Thanks For ur help :) :) 

Topic by svenkatesh3   |  last reply


Views counting

Hi! I am new to instructables and I have been uploading some video tutorials by embeding YouTube videos. The number of views in the instructables page is going up quickly but if I check my videos in my YouTube page I cannot see that there are that many views. Is there a reason for that? I have searched in the forum an answer for that but I cannot seem to find one. Thanks^-^

Topic by DIYlover89   |  last reply


Johnhall14's Tactical Shotgun v2 Mods and Review

Whatup! So I built Johnhall14's Tactical Shotgun v2. It was pretty ownage, but there were a few things that popped out at me as annoying, but easily fixed/modded: -Underbarrel shotgun's trigger guard kinda got in the way and was flimsy -No sights -Handle guard broke a lot; got annoying -Pin pull was obstructed by lots of yellow connectors -Trigger was a little short (imo) -Pin got stuck on pin block when being pulled back Now, these are all the negative things, but in the original gun, the positives outweigh them. Here are all the things I love about this gun: -Powerful. This gun is actually really, really, powerful. -Looks pretty nice -Mag is easy to use and looks cool -Underbarrel shotgun is awesome and really fun to shoot -Shoots 3 bullets per shot, with a mag. Now that's firepower. -Great range for a shotgun: 35-50 feet So I decided to mod the gun and fix all the things that annoyed me. Here's what my mods have done: +No more underbarrel shotgun trigger guard +Simple sights (better than nothing) +Reinforced handle guard +Pin no longer obstructed, which actually makes the gun look cooler (imo) +Thicker handle (May not be a plus for some people) and sturdier stock +Revised mech so pin doesn't get stuck +Metallic 6th and 7th layers, even on mag +Modded mag that shoots one bullet at a time +Easy to grip pin This gun, after mods, is probably one of my favorites that I've ever built. It's powerful, it's got some serious firepower, and it looks awesome, which can't hurt. Props to Johnhall14, this gun is awesome! ANYWAY, check out the video of this gun in action! DISCLAIMER: I edited the video so times in between reloads were cut out. The ROF shown is really inaccurate, and it's much slower than you're about to see. The ROF is still good, but it's not this fast. More Mods/Review -  Red's Reliable (R3)  

Topic by FlyingFish10   |  last reply