How to fix this cake stand?

Hi everyone! I bought this cake stand off ebay to use for our wedding cake. It's made of some kind of thin metal. The problem is that the upper plate seems wobbly where it attaches to the pedestal underneath. At this point I'd worry about whether it would be sturdy enough to support a 3 tier cake. I'm wondering if there's a way to re-enforce the seam between the pedestal and the plate to give it more stability? You can see the seam right below the "bowl" part of the upper plate. Would something like epoxy putty work? I'd like to avoid taking the whole thing apart if possible. (Don't mind the weird orange green colouring - I plan to spray paint the whole stand). Any advice or input would be great!

Topic by margogy   |  last reply


Instructables Collection Update

I think it high time that the Instructables crew redesigned the collections aspect of the site, the collections are full of odd behaviour, missing features and bugs that need to be resolved I have compiled a few issues which should be addressed, comment if you think this is an important issue and with any bugs not listed below. - Newly created collections often won't appear under profile tab until the user has logged out and logged back in. - Collections have no clear way to add a custom cover photo - No way to delete a published or unpublished collection - Collections occasionally getting deleted for no apparent reason I believe the Instructables team should address this issue very soon, just the presence of your comment can help bring this to the attention of the Instructables staff.

Topic by jackreno11 


Is my HDD verging on failure?

I decided to check my HDD's S.M.A.R.T status, and I was a bit alarmed to see my reallocated sector count at 32 and my pending reallocation count at 24. This hard drive has been running for about 2 years and a half, and I haven't had any noticeable trouble with it. But, what should I do (besides backing my stuff up)?

Topic by Dashing Rainbow Dash   |  last reply


Magnetic actuators - anyone here ever made one?

Magnetostrictive alloys like Galfenol are not only quite cheap but also quite possible to produce and machine at home. As it seems that right now I can't finnish anything without being stopped by something else that got my attention I am a bit stuch on all ends now LOL Anyway, I still have a few kg of rare elements like Gallium, Bismuth, Antimony and such that I misused for my testing of home made ferrites. So apart from making some fancy metals that melt at very low temperatures I thought a much better test usage would be to make something that for once has some real world use :) If you look up some of the research papers for Galfenol use or magnetostrictive materials in general you soon learn two things: a) You need a degree or have studied something related to fully understand the technical stuff behind it. b) Finding something that would give you enough info to make something that works as planned is next to impossible. I don't mind wasting some time on melting steel, machining some samples and do some testing but of course this takes a lot of time... So I was wondering if anyone here already experimented with magnetostrictive materials and their possible uses? Apart from micro actuators for minature things I don't have I was thinking of generator use. A lot of things produce wanted and unwanted vibrations, magnetostrictive alloys are capable of transforming them into electrical energy by simply using a coil around the material. For example the recoil of your favourite hunting rifle could in theory charge your dot sight or laser sight/flashlight. Or the otherwise useless vibrations of big machines or rock tumblers can be turned into something to charge your phone. Not to mention impact sensors or flat surface loudspeakers....

Topic by Downunder35m 


IGBT ZVS Induction Heater?

Among the many tutorials for building an induction heater out on the internet, there are two primary types. Some heaters use a ZVS circuit, and are quite simple but generally limited to a power of around 1000 watts, not enough to melt most metals. Other heaters use PLL controllers and coupling transformers to add charge the primary coil/capacitor loop, and these can be much more powerful but are significantly more complicated (and expensive) to build. It seems the limiting factor in the power of the ZVS circuits is that they can use only 2 MOSFETs, and each must conduct large amounts of current. However, if these could be replaced with IGBTs, which could conduct far more current, a much more powerful ZVS induction heater could be built. Is there any reason IGBTs couldn't be used for a ZVS heating circuit?

Topic by PleaseWork55 


Anyone know how to make an Organic LED panel???

Http://en.wikipedia.org/wiki/Organic_LED I have been keeping an eye on this for a long time and have been looking around on google every now and again . What im looking for is and  instructable for OLED's that give off light , im pretty sure how to make a flexible tv screen is something we would all like to know. I am just curious if its possible to make any flexible OLED at home whether it be just giving off light or a tv screen. Please if anyone knows the full process make a step by step don't just explain the theory like in the wiki or here http://www.ehow.com/how_2246666_make-organic-led.html Here is an example of what im looking for http://www.youtube.com/watch?v=uZfrFX36Hkc&feature;=related In the very least this could be cool for making clothes,costumes,indoor lighting,etc. In the best case scenario this would be used for a home made pip boy,laptop,cellphone,tv  I have been seeing allot of fully functional concept models but no solid release dates for retail. Despite the fact its allot cheaper to make tvs with this, im sure it would be twice as expensive to buy.

Topic by imonkry86   |  last reply


K'NEX NEW BALL MACHINE CONTEST!!!

It's KneXFAN200 here with a k'nex ball machine contest. There will be no prize unless you count being put on a collection of best ball machines with instructions. There will be a Grand winner, a First place winner, second pace winner, a third place winner, and a runner up. So lets get to the rules. First of all, it needs to be a ball machine that is new and has instructions. I'll make an exception though, you could do a ball machine with instructions that was made from May, 2016, and up. What you will do is make the ball machine first of all (unless it's built from May 2016 and up) and post it on instructables. Then, you put the ball machine link in the comments or just by emailing me on instructables. After that, I will put a picture of it on here and once there's enough ball machines or by the start of March, 2017, the winners will be announced and will be put in the collection (in order) that I talked about at the beginning. One more thing, I am not entering this contest. Thanks and good luck,                                           KneXFAN200

Topic by KneXFAN200   |  last reply


Rc car out of ps3 controller+quadcopter???

Hi im just wondering if it's possible to build a working rc car using parts from ps3 controler and quadcopter such as ESC ,battery ,  2 motors in controller to power 2 wheels... ( This is just to see if i can find any use of those two things that i dont use , not trying to create a really good rc car , just checking if it is possible) The two motors would both have to spin at different speeds to make the rc car turn.

Topic by Z1G0 


adafruit 8x8mini LED and 3cm OLED display

Hello all, I am building a Arduino WALL_E robot for my son. I am using 2 x 8x8 mini LED arrays using TWI and I would like to add on a small OLED (0.96inch) display. Both of these require pins  a5 and a4. The 8x8 led arrays using the adafruit_ledbackpack library and the oled using oled_12c Library. I dont know how I can get the OLED onto another set of pins. can any one help? cheers Shaun

Topic by ShaunF3 


What's the right dremel bit for a circle jig cutter? I had problems with this.

Hi, i just made a circle jig cutter for my dremel. I used the included dremel that you can see in the picture below, it basically looks like a drill bit, but it's sharp in the edges, so it can cut to the sides, thing that drill bits cannot do. I tried to cut 3/4 MDF, but it was very hard to do it, I simply had to stop the process after concluding that that's not the right bit for that job. I think I had problems because this bit is for cutting to drywall sheets instead. What do you think? does anybody know what dremel bit should I use to cut circles through 3/4 MDF? thanks.

Topic by johanx4   |  last reply


Can Indians compete ?

Can an Indian compete in contest? If I win will the prize be shipped to India ?

Topic by shaz_ahamed   |  last reply


How to Delete Instructable Drafts?

Hello is there anyone who knows how to delete a instructable draft on IPad?

Topic by Easter Egg Hack   |  last reply


WHAT TO DO WITH AN OLD PS2???

Any ideas? E.g. CD/DVD Player (hooked up with some decent speakers etc...) thanks alot everone

Topic by sam3352   |  last reply


Any suggestions for improvement for this LED Wind Chimes? FEEDBACK!

Hello guys! Here is an LED Glass Bottle Chime that I had put up on Instructables. Do you have any improvements for the model? any ideas? I would love to here what you think of it, do have a look! If you like it please give it a vote, in the glass contest to show your support : ) Here's the link : https://www.instructables.com/id/LED-Glass-Bottle-Chimes/ Share and follow me! Cheers!

Topic by Craftcorner 


'allsteps' seems buggy today

Hi, I'm having a lot of issues seeing all steps today.  I'm using chrome on win 8.1.  When I click on the grid (view all steps) sometimes it works, sometimes it doesn't, and it has stopped displaying ALLSTEPS at the end of the url.  I'm not sure if it is connected but I've been looking at instructables for ages without issue, but only signed up yesterday. is the timing related?

Topic by oragamiunicorn 


Geeetech voice recognition module how to import group 2??

Hi everyone i am using a geeetech voice recognition module for a project. i have read the manual and been able to train and import group 1. But when i train group 2 then try to import group 2, there is no response only group 1 is saved see AccessPort below. How to train group 1 and 2 and import both?????? i need 10 voice commands that is why i need those 2 groups. ================================================================= Common Mode START AGAIN START Different START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one Group1 finishi! START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one START AGAIN START Finish one Group2 finishi! Group1 Imported!

Topic by keshavcanaye 


Safety Shutoff Bumper on Electric Wheelchair

Friend has Parkinsons.  I'm setting him up with electric wheelchair. Best if he doesnt run it through walls, or run over anyone. need electric shutoff on bumper front and back. How, exactly? and. Go.

Topic by Toga_Dan   |  last reply


pi coders wanted

Looking for a few coders to help make a better 3d system based on the pi and arduino. apps available will incclude: 3d printing tool usage CNC 3d scanning and more to come I have next to NO experience in coding but have designed and tested 2 machines that I need programmers for. these will be opensource at the end and also sellable. I am hoping to make a store similiar to playstore or app store so that advanced programmers can also make a small amount for exceptional products. the idea is huge but could be beneficial to several thousand people including users of this forum in helping them with techniques and skills they have not yet mastered. the project is HUGE and the mechanical side is largely done with the exception of a few parts that are added extra. other inclusions will be safety features and high perfomance. for those that are interested in this AND have coding experience I look forward to your replies on this topic

Topic by plucas1 


New PDF Layouts on the way

Hi all, Just a quick heads up for pro members: in our continuing efforts this year to add value to pro memberships, we're releasing changes shortly that should make the PDF downloads much simpler to download, and much more attractive and readable once you do. They feature two-column layout for more readable text, and accommodate much more of the formatting that makes each Instructable unique. To begin with, these new PDF layouts will only appear for newly generated PDFs. As we receive your feedback on them and iron out any kinks, we'll expand to include more projects, replacing the old PDF layouts over time. Big changes like this always come with some unpredictable parts, so if you notice anything that's a little off, please let us know! ~Devs

Topic by pseaton   |  last reply


Testing

I need to create a Dummy load of 50 amps at 18.5 volts DC so I will need to dissipate 1000 watts, was thinking of using 10 x 100 watt 100 ohm resistors from EBAY will that work, there are others at 4 Ohm etc, what ohm should I use?

Topic by TrevorP55   |  last reply


Wireless button to talk to computer

Hello, I'm running some sessions with a multi-abled theatre group of kids and we want to create a piece of interactive dance. Each kids will carry a couple of buttons and when they press them they send a signal wirelessly to a computer nearby which is running the dance program connected to a projector so the kids can see what they are doing. So pressing their button could change the colour of the kids projection from red to blue.  I think I need to use a microcontroller inside a button but am not sure which one - cheap and small - bluetooth or wifi? How do I get the button press program onto the microcontroller? Finally how does the computer hear the signal? The dance program is written in Processing.  Is there a project that is similar? I've searched for lots of things but can't find exactly what I need. Thanks The kids will enjoy this Tim

Topic by GeneticM   |  last reply


AUTO HEADLIGHT LEVELING stepper motor based on arduino

Hello everyone, first sorry if I make some erreur in my writing post, I m a French people, so I would like know if it's possible to make a project arduino based with a accelerometer to use like an auto leveling adjustment for the road beam, actually on my car I was a standard halogen headlight with dc motor and a wire to control I change the headlight by a full xenon and now for the gestion of the leveling I need a third part to work in a autonome mode, I had searched for a while a module to control the  stepper motor based on the car inclination and I had found nothing who'll be use with an accelerometer to adapt to car acceleration or deceleration,  I guess I need an accelerometer, and a stepper motor controler 12v I would like know how hardest is to setting up? Thank you

Topic by gagaetan10 


I Can't Follow HackerBoxes

I have been trying to follow HackerBoxes for some time now (about six months), but it doesn't work. The button gets stuck on "Loading..." as the image shows. I am using Windows 10 and have tried Firefox, Chrome, Edge, and Opera with the same results. Is there a fix for this? https://www.instructables.com/member/HackerBoxes/ Thanks, Gary

Topic by CrittersWeb   |  last reply


what Materials are the best to make tiny human models like Wood Artist's Model?

I was thinking Wire and Fimo but Fimo is too much expensive... WHat kind of wire is the best? im thinking about twisting them quite often What Kind of thing can I replace for fimo and cheap?

Topic by DIAGONALLIS   |  last reply


Wanted: 9 volt light sensor module

Calling all you that know and enjoy making circuits. Here is my problem.  This is too bulky of a solution with a relay switch and 12v battery pack. https://www.instructables.com/id/DC-Low-Voltage-LIght-Sensor-Switch/ What I would like is a 9 volt input and 9 volt output.  Actually, whatever the input should equal output.  So if I connect 3 v battery, I want 3 v output.  Right now I need 9 volt in = 9 volt out.  No Relays!!!  Simple and clean circuit board only. The LED can't be soldered to the board.  I need the capability of extending from the board with wire to adapt to my needed projects. On another note, if you know of something already on the market, please send a link.  I will be happy to make the purchase. OH... no modules that need a microcontroller.  Need a stand alone module. Thanks! Looking forward to hearing back soon. The Water Dog

Topic by DiyWaterDog   |  last reply


Found a REAL Sea Turtle in a Dumpster?

I was at the beach a few days ago for a school field trip/ biology class. I'm always searching for material for projects, so I figured that while I was waiting for others, I would take a look, as something that looked like a motor caught my eye. It was just a rusty motor, but on the way back, while walking near a dumpster, I spotted something HUGE inside.  A REAL SEA TURTLE IN A DUMPSTER? I didn't know if it was real, but: There was no smell - no flies and bugs too. It's either a fake turtle, or has died recently.  The shell was peeling. The shell of a tortoise is in one piece, but the shell of a turtle is different? The head looks like it has been connected to the shell. I don't think that means it's a real one. The rear left leg looks just so real. If it's actually real, I would think that someone spotted it, dead, on the beach, and called the people that deal with that stuff. I think that it's pretty unlikely that the turtle fell in, as it would have probably landed upsidedown, and because it's pretty far from the swash (?) zone, even though I know that can travel way more than that, probably even uphill. Pictures below. What do you think? ᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴬᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴᴴ

Topic by Yonatan24   |  last reply


small vacuum pump

Where can i purchase a replacement vacuum pump for a rival vacuum sealer vs230

Topic by derricklaw   |  last reply


Free NASA Software!

From the NASA press release: NASA has released its 2017-2018 software catalog, which offers an extensive portfolio of software products for a wide variety of technical applications, all free of charge to the public, without any royalty or copyright fees. Available in both hard copy and online, this third edition of the publication has contributions from all the agency’s centers on data processing/storage, business systems, operations, propulsion and aeronautics. It includes many of the tools NASA uses to explore space and broaden our understanding of the universe. A number of software packages are being presented for release for the first time. Each catalog entry is accompanied with a plain language description of what it does. “The software catalog is our way of supporting the innovation economy by granting access to tools used by today’s top aerospace professionals to entrepreneurs, small businesses, academia and industry,” said Steve Jurczyk, associate administrator for NASA’s Space Technology Mission Directorate (STMD) in Washington. “Access to these software codes has the potential to generate tangible benefits that create American jobs, earn revenue and save lives.” NASA published the first edition of its software catalog in April 2014, becoming the first comprehensive listing of publicly available software to be compiled by a federal government agency -- the largest creator of custom code. Since then, NASA has shared thousands of its software programs with students, industry, individuals and other government agencies. “Software has been a critical component of each of NASA’s mission successes and scientific discoveries. In fact, more than 30 percent of all reported NASA innovations are software,” said Dan Lockney, NASA’s Technology Transfer program executive. “We’re pleased to transfer these tools to other sectors and excited at the prospect of seeing them implemented in new and creative ways.” The searchable catalogue is here: https://software.nasa.gov Wouldn't it be cool to use NASA code in your next project? https://www.youtube.com/watch?v=JIpyc8AfMZY

Topic by Kiteman   |  last reply


Better Filters in the Answers section

Currently there is no way to filter for questions that have not been commented on. I really enjoy answering peoples questions, but when i have to dig to find any that actually need answered it is discouraging. I propose another option in the current ones for ones with no answers submitted currently the unanswered tab shows all questions that have comments trying to answer but the user hasnt submitted it as an answer. It may also help to have inactive questions auto set to answered or inactive.

Topic by ddemayo   |  last reply


Can I power a raspberry zero + arduino with a powerbank?

Hello everyone, I want to make some kind of driving computer, but I don't know how to fix the power. I have a 16000mah powerbank that has a 1A and a 2A power output with 5v. And I want to power the following: Raspberry Pi zero Internet dongle Arduino Arduino Motor Shield 4 motors(DC 3-6v each) 2 servos 1 webcam (optional) I really hope someone can tell me if this is possible. The reason I don't want to use normal battery's is because I want a solution that is easy to recharge.

Topic by Thijsd4   |  last reply


making a bluetooth servo circuit to run an aerosol can at distance

hello all, I am a novice to the servo and arduino world. I am wanting to build a system that can spray an aerosol can at distance. around 100 yards.  Is there a way I can accomplish this? what parts would I need to do so? thanks for your time and help!

Topic by LucasF107   |  last reply


Erase a dvd+R using software

Ok so we all know its possible to write a dvd+r up to the limit. (one time only of course) So if it can write data once, that why cant we have it ignore the data or headers and just write all 1's or just random garbage to the disk to destory it? It actually sounds cooler than breaking it... If there is software than please provide a link (if its free/open source)

Topic by BeefyHaze   |  last reply


Can't see anything when signed in

When I wanted to enter a contest I signed up with new account. But then when I wanted to open a contest or open somebody's instructable I have a blank page. Does anybody has or had this kind of problem and how to fix it. I hope somebody can help. 

Topic by ssj_strky   |  last reply


Laptop's fingerprint reader, is it possible to reuse it on desktop?

The dead laptop is a HP Pavillion dv3 4010sl, the sensor is a Validity VFS301 (cdk1071_r04_hf) as written on the sensor itself. if i remember correctly it was shown as a USB peripheral. maybe is simple and it need just some resoldering to a USB cable, the problem is that the flat cable connecting it to the motherboard has 6 pins/lines and my knowledge in electronics is quite limited... I've found online what seems like a motherboard schematics (pg.48) and the vendor's sensor's manual. Does Anyone knows if is possible, If yes how?

Topic by CladZo91   |  last reply


Something ate my pictures.

I notice the web site was down last night well actually early this morning, That is Feb 28th. So today when I went back on and checked my instructables for activity, like comments made I noticed that some thumbnail pictures were missing -- blank. Opening the instructable the  title is there but the opening image is gone. And a bunch of the other images were gone.  Thought it was my browser or something so I opened them using my I pad --- same thing.  Something has eaten my pictures. This is one of the ones. https://www.instructables.com/id/Where-Marbles-Come-From/ many of the pictures are gone. When you click on the blank picture the following message comes up The requested content cannot be loaded. Please try again later. And now I have looked at a few of my other instructables and they also have pictures missing. I hope they are not gone for good. Reloading all of those and trying to recreate the notes with them would be a lot of work.

Topic by Vyger   |  last reply


Featured Author Interview: watchmeflyy

Hello! I recently had the joy of interviewing watchmeflyy. Connie Yu was interviewed quite awhile ago, but her interview went missing for a time when the featured author interviews stopped. Since we've changed up the format a little, I wanted to share some of her answers that didn't make it into the interview. If you have any more questions that you would like watchmeflyy to answer, here's the place to do it! Where are you from? Do you feel like your home affects how you work or what you create? I was born and raised in the west side San Francisco, a 10 minute jog from the Pacific Ocean, but my parents trace their roots back to Guangdong province in China. Growing up in a low-income family of immigrants, I couldn't just ask for model plane kits or other toys that my peers flaunted; I had to come up with my own toys and use what I had to entertain myself, my way. This developed my resourcefulness and creativity early on, so I'm glad not to have been born with a silver spoon in my mouth. As for what I create, that mainly just depends on my mood. The quote "Necessity is the mother of invention" usually applies, as I make whatever I refuse to buy. You do such lovely work with wire; what is about that medium that you love? I love how wire can be so flexible yet so sturdy at the same time. Unlike paper, wire creations are generally more durable and harder to crush. It also lacks the problem of having excess sticking out; excess wire can be cut off, whereas excess paper must be tucked in somehow (no cutting in origami...). These added benefits over paper give wire more versatility, as I feel less limited in the creations that I can make. Your pop culture oriented (geek) projects are such fun. What draws you create such projects? Those geeky projects help me enter the worlds that I explore through books and movies. While I don't participate in cosplay, I do enjoy bringing little parts of the stories to life, and it's so much more fun when you have your own tale of how you created. For example, if you check out my Simple Suspended Shelf project, you can see pictures of a ceramic Haku from Spirited Away that I made in ceramics class – a tale of perseverance that I recount in exhaustive detail when anyone asks about the awesome dragon in my room. I also like my geeky projects because I can attach a special meaning to them as a continual reminder to myself. My wire Masamune from "FFX: Auron's Masamune" serves as a continual reminder of Auron's strength and determination to inspire my own, and my Aperture tank top from Portal: Chell's Tank Top (which I wear to sleep next to the plush Companion Cube that my mom and I made, of course) reminds me that if Chell could survive trial after trial, so can I.

Topic by Penolopy Bulnick   |  last reply


Error 503 Connection timed out

Was trying to download a file from RC Motor Dynaometer V1.0 but I get a Error 503. Suggestions?

Topic by agbell118   |  last reply


<5mm distance sensing, <100micron accuracy, GUI, RasPi or Arduino?

Hi there, I am trying to keep my hardware/ coding skills alive and spruce up my bicycle wheel truing stand. I need to figure out the required hardware + software for the following: I want to build a non-contact distance measurement sensor system and get the output "into" my computer for display in a graphical user interface. I know I could omit the latter step with going directly onto a mini-LCD screen, but trying to use this a learn-another-programming-language learning experience (I've coded Matlab galore, pondering Python for this project). General system components: Sensor - [something - RasPi or Arduino I guess] - laptop (running debian) - GUI displaying continuous sensor reading Sensor: I've web-searched the hell out of this, but not finding anything quite answering my questions. I want to continuously measure the distance from the sensor to a bicycle wheel rim braking surface. Material is aluminium, shiny, though not smooth. Biggest problem with the web-search is being swamped by proximity sensor results (on/off) rather than a distance proportional output signal and much lower resolution projects. I rule out IR or optical sensing, now stuck between ultrasonic and inductive sensing, though tending to the latter for a faster response/adjustment to change time. Sensor criteria (other than reasonable $$): - total sensing range: ca.5mm - sensing accuracy 10 to 100micron/ 0.01 to 0.1mm - don't ask if that's needed, a bit of overkill, I know, but a bit of OCD doesn't do any harm, eh? - fast-ish sampling rate (so that when I turn the wheel, the number on the screen updates nice and fast, guess >25Hz is sufficient). [Something - RasPi or Arduino]: I know that I could omit the laptop GUI part (mini-LCD, LED array, etc), but keen to learn/ practice a little Python with this project, so I guess I am tending to the RasPi, but I am open minded. All I want is the analogue sensor out to end up as a digital reading "inside" my computer to be passed to my GUI as a reading. Essentially a mini A2D converter. Not fussed whether the output is in actual distance units or in arbitrary units/ current units (I guess the sensors put out a proportional current signal?). GUI: Depending on the above, how do I best get the signal "into" a Python program? A moderate fast sample rate >25Hz should suffice.  Any help with this would be greatly appreciated! LaserCycle

Topic by lasercycle   |  last reply


K'NEX Guns or K'NEX Ball Machines? You Decide.

Which is more popular on Instructables.com: K'NEX guns, or K'NEX ball machines? Please post your opinions below. (Note: Credit for the ball machine picture goes to sandroknexmaster, and partial credit goes to dr. richtofen for the gun)

Topic by The Knex Inventor   |  last reply


Pixlr Bug

I want to post an ible with writing on the cover photo. I have done it before, so I clicked on the "edit in pixlr" button and it makes the picture go grey. It doesn't do anything and when I click on the back button it doesn't go back to the picture, so I have to restart or us the draft. Help would be appreciated.

Topic by random_builder   |  last reply


More infos on profile pages.

Hello everybody. What I would like to see, is more infos on users' profiles. Currently there are: Instructables (very good), Views (completely not important I think), Comments (somewhat important if We want to check if user is active). And that's it. Nothing more.  What is missing is: - Instructables User made - super important, right after list of instructables created. I am very surprised it is not there!!! - Some basic info where particular user is from. Description page is not enough. People most often leave it empty or They don't put any usefull infos. - Links to User's YouTube channels or other social media profiles. We don't live only in Instructables. Cheers Radek

Topic by zolv   |  last reply


Help needed with designing/building lights-and-sound gadget for magic trick

Hi guys, I'm hoping someone can help direct a complete newbie. I'm a magician trying to build a gadget that looks like a steampunky-science-device. I'm working on a routine like this one: https://www.youtube.com/watch?v=GTikFSOBIA8 If you go to the 09:00 mark you'll see it in action. I bought the instructional DVD from the man in the video which supposedly includes instructions on making the gadget, but although he explains the flash-paper-ignition part clearly he doesn't even touch on how to make the lights and sound. I'm fine with woodworking, soldering etc. but I have no clue what pieces I need to buy to make flashing lights, squeally squawky adjustable sounds etc. If anyone can tell me what parts I need and how to string them together, or where to go to find suitable instructions, I'd be very grateful.

Topic by MalcolmR15   |  last reply


Help needed: electronic light/sound gadget

Hi guys, I'm hoping someone can help direct a complete newbie. I'm a magician trying to build a gadget that looks like a steampunky-science-device. I'm working on a routine like this one: https://www.youtube.com/watch?v=GTikFSOBIA8 If you go to the 09:00 mark you'll see it in action. I bought the instructional DVD from the man in the video which supposedly includes instructions on making the gadget, but although he explains the flash-paper-ignition part clearly he doesn't even touch on how to make the lights and sound. I'm fine with woodworking, soldering etc. but I have no clue what pieces I need to buy to make flashing lights, squeally squawky adjustable sounds etc. If anyone can tell me what parts I need and how to string them together, or where to go to find suitable instructions, I'd be very grateful.

Topic by MalcolmR15   |  last reply


NES Zapper laser gun w/sound effects

Hi Everyone, I came across the NES Zapper laser mod that burns things recently, and it lit a fire under my backside to do a similar build.  I've scoured various other resources and have yet to come across exactly what I'm looking to do.  And yes, I have already done a forum search for this project.  So, since I found the NES Zapper laser gun on Instructables, it seemed only right that I reach out to the Instructables community for assistance in making this project a reality. I am a rookie at this sort of stuff, but really want to make this happen.  I would like the battery to remain inside the Zapper, rechargeable by way of the female AC adapter connector.  I'd also like to add sound effects, so a speaker and soundcard is going to be needed.  I need help with the wiring circuit so I can adequately power the Laser, LEDs and sound effect without frying anything.  Below is a list of the components that I know of, I know there are others I'll need which is where I hope those of you reading this can help me out. 1 x Nintendo Entertainment System Zapper pistol 1 x 230-250mW 532nm laser 1-3 x Diffused Green LEDs 1 x Rechargeable CR123A 3.7 Lithium-Ion Battery (OLight has built in circuit board to prevent overcharging, over discharging and over discharge current) 1 x CR123A battery housing (found on thingiverse) Any help would be greatly appreciated.  Thanks in advance! Dan Solo

Topic by DanSolo81   |  last reply


need help for nrf24l01+

Well i am using rf24 module for a project since i am new to it i am having some difficulties to send the data. Actually i am doing a remote consisting of a geeetech voice module + nrf24 + arduino nano. It must communicate with a hub which comprises of arduino uno + rf24 + relays. I have tested the voice module and the data is read as serial command. see the code for a simple example without rf24 below. For my project i need to make the transmitter read the serial command of the voice module and send it to the receiver side. In the receiver side it will activate relay with a switch case section. I would appreciate if anyone could help me out and suggest me how to send the command of the geeetech voice module via rf24. //code for simple test between voice module and nano int led1 = 2; int led2 = 3; byte com = 0; void setup() { Serial.begin(9600); pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); delay(2000); Serial.write(0xAA); Serial.write(0x37); delay(1000); Serial.write(0xAA); Serial.write(0x21); } void loop() { while(Serial.available()) { com = Serial.read(); switch(com) { case 0x11: digitalWrite (led1, HIGH); //turn red on break; case 0x12: digitalWrite (led2, HIGH); // turn yellow on break; case 0x13: digitalWrite (led1, LOW); // turn red off break; case 0x14: digitalWrite (led2, LOW); // turn yellow off break; case 0x15: digitalWrite (led1, LOW); digitalWrite (led2, LOW); // turn both off break; } } }

Topic by keshavcanaye 


Wanted: Urgently need $10 Adafruit Gift Card (Topic Closed)

I'm short of 10$ from buying some stuff from Adafruit. If anyone could give me, I'll give them back when I can redeem one. Need that stuff urgently to complete my project otherwise, I would have waited till I could redeem one Please help I'll surely give back the money

Topic by techno man   |  last reply


converting a bike to a trike?

Anyone have info on converting a bike to a trike? My disabled son has balance issues but wants to ride with the family, however we can't afford a new adult tricycle or one of the expensive conversion kits. He's much too large for training wheels to work. I'm hoping to find a way to convert an old bike with minimal expense and no welding.

Topic by valr   |  last reply


Notifications from Android to Arduino via Bluetooth

I would like my phone to relay my notifications from the notification tray to an arduino. I had done alot of snooping around, and I have not found anything regarding doing that. Closest thing I had come to was sending notifications from the arduino itself, to the phone. But I want it the other way around. The idea is that it would display it to one of those 16x2 LCD displays, scrolling through whatever the notification says. I have yet to get the LCD, but in the meantime, I'd like to see about getting it to come through to the serial monitor. Does anyone know how to get android to do something like that?

Topic by Dashing Rainbow Dash   |  last reply


Ballerina Jewelry Box Project

Hello, I am interested in creating a jewelry box for my niece. The idea is to laser-cut a custom box which I think I can find templates of online and create an SVG file with some art for the laser cutter. I plan to 3D print a ballerina as well. I initially thought of running the electronics with Arduino - but prefer to keep it simple.  I want to have a custom song/melody playing - I was thinking of perhaps some sort of a recording/playback speaker where I can record the song initially and then have it play back - ideas? For simplicity - do you think it is possible to run a simple circuit with a couple AA/AAA batteries, a hinge control (ideas for something that will do the trick and act as a switch are very much welcome too), a speaker, and some sort of a stepper motor/servo to spin the ballerina. I would love to get some ideas and supplies from you. This should be a pretty straightforward, simple project but I don't have much electronic experience and am not sure what to search to find the technology I need. Thank you, KoMoDo

Topic by KoMoDo   |  last reply


PDF download failure- Specific Instructable only

I have been trying to download a specific Instructable (5 Ways to Remove a Stripped Screw by mikeasaurus). I am a Pro member. I have tried two browsers (Firefox 51.0.1, 32-bit) and Microsoft Edge 38.14393.0.0. In Edge, I get this: AccessDenied Access Denied E19C0FE6BCE367F9 +C5EcpMmykOevK8VULBxxjTnZBVDhF2gxt86VCFizkOnp03comyjfNnX38MlWNhLfnrXH917fKM= In Firefox, this: AccessDeniedAccess Denied38C86677C72FD570baxQesBYkq6iVRPIxtqaWupLMeDJEFVyjMZMcdM2YQQZZsRmuCDDXomn8zkrU9P72zRqqVIgbSw= Other Instructables work and download just fine. Any thoughts?

Topic by KEUrban   |  last reply