Variable USB Power Supply (5V 2A)

I was looking to either build, buy, put together (kit) a Variable USB Power Supply similar to the one that I saw on the EEVBlog (https://www.youtube.com/watch?v=QxWRT4U_I9o). I really liked the compact design of his version, but he never finished it, so I can't buy that kit ;-( Is there a simple way to put together something that is protected (so I don't kill the USB socket I get power from) and has a Variable Volt and Amp adjustments knobs/buttons. I've looked at getting a full size Bench Power Supply, but would love to just have one so that I can power from my laptop or any of my million Micro USB power adapters (5v 500ma through 5v 3A supplies). My first project is something I need to eventually run off of AA batteries, but I didn't wanna keep on re-charging the batteries while I test my circuit design. Would rather have a constant source of 1.25v-1.5v power during the prototype phase. I'm just now getting into Electronics, so please take it easy on my poor little brain. Hopefully this hasn't already been asked, didn't find anything in my quick search through the forums.

Topic by drofnasnhoj   |  last reply


Bug in webpage

Does reporting bugs in the site still qualify for Pro membership? I found a bug in the site that I can't believe hasn't been reported or dealt with yet. Requirements: User must be logged in. Reproducible: Always Bug: If you click on "You" a dropdown box appears as shown in the below image. The Settings hyperlink points to /you when it should point to /you/settings The other hyperlinks appear to be correct. I want my bug bounty :D

Topic by gregoryfenton   |  last reply


Instructables bumpers available for your project videos!

The team here at HQ has just completed a new set of Instructables bumpers for the videos you include in your tutorials! There's at least one for every category on the site (with the exception of Home; that's coming soon) and you can download them and add them to the videos you embed in your instructables. They were super fun to make and we're looking forward to seeing them in your projects. Leave us a link in this forum if you use any of them!

Topic by Neepha   |  last reply


Dissolving material

Any material that dissolves in water after a particular period of time (eg:3000 litres) .. or any other way to achieve it..?

Topic by ursurya000007   |  last reply


EarthBound for SNES (Mother 2)

Hello, I recently played some earthbound, and found it to be fantastic.  So, I know there are some hardcore EB* fans out there, just gonna say, I'm not one of them.  So, really I made this for people to chat about EB and discuss problems they have in the game. So, say,"Fuzzy pickles"! *EarthBound

Topic by nancyjohns   |  last reply


Buzzer for Gyser with 10 min timer

Hi Team,   I want to make a 220v buzzer with timer 10 min. My thought is to control my electricity bill by reducing  gyser usage. This buzzer will help me remind me that gyser is on for 10 min so that I can switch it off to save power. I know it is seemed to very easy for pro guys but very difficult for me. Please help me understand and make such buzzer with minimal budget.   I need help to make this project. Kindly let me know how can I do it.

Topic by vindude5   |  last reply


how can i transfer data file from sd card to my Windows PC through WIFI.

Hi I'm using the Arduino to log data on to an SD card and I would like to be able to transfer that file on the card to my Windows PC for further use it, through WIFI. how can i make that possible.

Topic by SoufianeG   |  last reply


LEDs at less than forward voltage ; no resistor??

I'm new to playing around with LED's, so please forgive the ignorance.  Right now I am trying to make a homemade lamp of sorts.  I am using white LEDs with the following specs per the seller. FW current - 25 mA FW supply - 3.3V (typical), 3.6V (max) Tested one LED with two AAA batteries and no resistor.  I was told by radio shack guy that since supply voltage was less than FW supply I would be fine, and the LED would pull the amperage it needed.  Lit up and looked fine to me. I then found a 9V DC wall wart, and decided I wanted to run possibly up to 12 LEDs using 4 parallel strings of 3 LEDs in series (9.9 volt drop across each series).  I bought a multimeter and checked the DV voltage from the power supply, and it ran consistently between 9.1 - 9.2 volts.  The thought with the 9V wall wart was that the voltage supply would be lower than the FW supply, thus I would not need resistors, simplifying and reducing # of connections needing soldering (new to that as well). My question is, will this 9V work for my system?  I've tested 3 LED's in series, and also 2 parallel strings of 3 LEDs in series, and both lit fine.  I've read posts where people say that the lights will not light up or will be dim if the FW supply is not provided.  As mentioned, they seem fine to me, and as this lamp is planned for more of a mood lighting, I don't need it much brighter.  Is the only downside a dimmer light?  Will it last just as long?  My main concern is putting the time and effort into constructing this thing, and then having the LED's fail for some reason I don't understand, and having to rewire it all.  I've thought about buying a 12V supply and using a resistor, but would rather not unless there is a good reason to do so. Thanks in advance for any input!

Topic by brumachine82   |  last reply


endurance xt 3600

I need a belt for my Endurance xt 3600 treadmill

Topic by gjohnson690   |  last reply


Working on my Masters Thesis

Hello! I’m currently working on my Masters at Simon Fraser University, in the SIAT department. As part of my graduate research, I’m looking into the structure, content, and presentation of DIY tutorials. To do this, I’ve taken one very well-known DIY tutorial, and converted it into twelve unique formats. I’m hoping to have as many experienced DIY tutorial authors look though the modified tutorials I’ve made; then try imagining using them as formats for presenting projects they’ve made in the past, or are thinking of making in the future; and once that’s done, getting their feedback. If you’re interested in participating, I’ll give you access to the tutorials for a week, so you can look though them and get acquainted with each. At the end of the week, I will send you an online form with a couple of questions relating to your preferences, opinions, and overall thoughts of those tutorials. If you’re interested or have any questions please feel free to ask. Thank you very much! -Matthew

Topic by StumpChunkman   |  last reply


PC Case Mod Vintage Cola machine help!

Hi! I'm looking to make a pc case modded after a vintage Vendo 1950's Coca Cola machine. The problem i'm having is fabricating the front to look authentic.  eBay has been a help getting coin returns and bottle openers, but i don't know where to find (or how to make) larger pieces I may need. I was wondering what materials I should use, and are there sites that sell 1950's style grills, chrome parts or metal sheets. Any help would be appreciated. Thanks!

Topic by PeteR4   |  last reply


Solar Light box

Hi, I would like to make a lightbox and charge it from a Solar cell . I saw a 5v ledstrip online , but I am wondering wich battery and wich Solar cell I have to buy? I mean how much voltage en watt does this ledstrip need? Wich diode do I need?  Another question: I want the Solar cell to charge during the day and I need it's power during the night , do I have to do something special with it ? I mean in the most cases you will have the energie richt away, that is not my plan .... I rather not use an on and of switch , I want to use it automaticaly.    I  just started with the diy adventure? Forgive me :)  greetings deborah

Topic by DeborahM8   |  last reply


Trying to repair micronta 22-164

I have a micronta talking multi meter 22-164 and after I put fresh batteries in it it keeps saying replace batteries. I found out other people have the same problem. 

Topic by tim4   |  last reply


CREO, SolidWorks, Catia, Etc.?

Sort of a broad question here - if it deviates too much from the theme of these forums, my apologies. I was just curious to know, of those of you who use manufacturing design software, which do you prefer and why? 

Topic by PlasticPanama   |  last reply


How we make bevel gear?

I want to make straight bevel gears but i confused which type of cutter use to cut by the help of milling machine?

Topic by MubashirS2   |  last reply


Open-source how-to framework

I remember reading about an open-source how-to framework that was being created by people with previous(?) ties to Instructables. Does anybody know what it's called? Basically it was a global, unified structure for how-to's should be written. 

Topic by hughmorris   |  last reply


Not able to enter Contest

I had an instructable which is relevant to the Make It Glow contest, but I am not able to enter it in the contest. It says that I have no eligible Instructable. Please Help Me Out Here!

Topic by Tech_Freak   |  last reply


Need help controlling two servos using arduino, bluetooth, and android.

Hi folks.  I am back.  I haven't been very active on here for the past several months, but I did move to a different continent.  Anyway, I need a little help from of those smart arduino folks out there.  I am looking for an app and arduino code to control two servos using an android device via Bluetooth.  There are a ton of instructables on controlling motors via Bluetooth, and there are also several tutorials on controlling one servo via Bluetooth, but what I want to know, is how to control two servos.  I am looking for something like this but able to control two servos.  I did try an app that uses an accelerometer to control two motors, but I want to be able to control them by a slide or nob.  If someone knows of a link that could be the solution to my problem I would be grateful for it. Any help would be greatly appreciated.  Thanks, th3_jungle_inv3ntor  -   actually I left the jungle :(

Topic by th3_jungle_inv3ntor   |  last reply


Rare Instructables Robot T-shirt?

I recently won the Toy Rods And Connectors Contest as Runner up and got a knex set and a unusual Instructables Robot T-shirt. I looked all over the internet for a shirt with the same design but came up with the usual ones. Is this one special or just a newer one? On the back of the shirt at the top, it says " Instructables".

Topic by knexpert#10829476   |  last reply


Nerf- Clip vs Magazine

Why does Hasbro not understand the difference between a clip and a magazine? They are leading people astray by calling their magazines "clips" when obviously they aren't. 

Topic by jcgpopcorn23 


LF Help on Audio Input and Output

Looking to build an 'audio switch' for my devices on my network or have a circuit board to have on my desk. I have 5 computers (windows/mac/linux) I run at any given time, some used for Skype, Youtube, Music, and/or Gaming. I am looking to make something that I can connect up with 3.5mm sound and mic jacks to a main board and controlling the input and output to different speakers and headsets all on 3.5mm.  Ideally I'd like to have volume control on the board itself, but isn't required. Does anyone know of a instrucable already made?

Topic by AlexR32   |  last reply


New Light Fitting Smells Of Fish When Hot

Hi, I have just fitted a new light fitting. After it gets hot (60 Watt filament bulb) The room smells of fish. I believe that the smell is coming from the hot plastic, probably from the plastic that holds the shade in place. I don't want to reduce the wattage, The label on the connector says it is rated for 100 Watts. How can I get rid of the fish smell? Thanks

Topic by anon_private   |  last reply


need help figuring out what these chips are good for

Im kinda new to electrical components i can follow a picture and put things where they are post to go but figuring out what the components are for no clue i'm currently working on making a 3d printer and was hoping that some of the these components that i found can be used for anything useful.  so heres the list of the chips LM741CN rca 832 P109 DM7473N  7945C  SN7475N MC14093B   CP   7939 ALSO MODEL Z240D10 SOLID STATE RELAY 3-32 VDC CONTROL TURNER ASSY 510-310 DRILL510-311 ITS A BORAD

Topic by MichaelD136   |  last reply


EMP

Is there anyway to create an EMP that could take down a whole building that is handheld?

Topic by gsyme13   |  last reply


cold explosions

I know that by adding ammonium nitrate and water the compound gets cold. so my question is by using ammonium nitrate and other then water can I use to make extream pressure build up in a short time while still being cold. this question is not for any explosive device to cause harm to anyone or thing. just wondering if a cold explosive could be possiable. thank you

Topic by pokiesmokie   |  last reply


How about my painting.

Hey guys, pls check my paint and suggest what should I prepare.

Topic by Mary Suu   |  last reply


What happened to the spammers?

I noticed for a few days now that there is basically no spam showing up anymore. Of course I have no clue if that is coincidence but if not I would like to thank the code monkeys for fixing the spam problem. Yes, there will be new spam attacks but right now I really like the clean look after a reload - no spam is always good :)

Topic by Downunder35m   |  last reply


United States Colonial Marine armor

Hey, does anyone have any idea as how to make this, besides vaccuform? if you do, please PLEASE post!

Topic by RC-0720   |  last reply


Arduino Car

Hi, So in computer engineering I've got to make a arduino based car, I've added a whole bunch of features such as IR tracking, obstacle avoidance(proximity sensor), optical tracking(follow a black line), and remote control through an android based phone. Since I'm a total newbie to technology I'm having trouble. I would appreciate it if You guys can point me towards resources and arduino libraries(for coding) that will work for me. Right now for coding I've only got basic pseudo-code setup since I do not know what libraries to use. I have searched up many sketches online and looked at them but didn't really understand any of the code. Here's the basic pseudo-code I got setup on the things that I've got to work on: DC Motor (4 of em for the wheels) (I also plan to add a stepper motor for turning right and left so if you could direct me on that as well) //Import necessary library //Setup the motors and pins //If signal for forward received //Code for moving forward //Set speed //Else If signal for backward received //Code for moving backward //Set speed //Else If signal for right received (keep turning right till stop signal received) //Code for moving right //Set speed //Else If signal for left received (keep turning left till stop signal received) //Code for moving left //Set speed //Else If signal for stop is received (Should we slow down to a stop or just stop?) //Code for stop //Set speed IR (I've got transmitting and recording diodes) //Import Library //Declare Pin for the IR Sensor //While loop: Move Right //If IR signal is received //move forward //Else //Jump back to top of loop Proximity Sensor (obstacle avoidance mode) (I might either use the one from Lego kit or buy a separate one ) //Import Library //Declare Pin for proximity sensor //While Loop: Send out sonar(echolocation or whatever) every second //Is there any obstacle?   //Yes, turn right so many degrees, and go back to while loop   //No, move on forward at set speed //If you’re surrounded and cannot exit send out a message through flashing LED's ________________________________________________________________________________________________________ I'm not asking for the code or for any of you to do all my stuff for me, I'm just asking for direction and resources. Thank You

Topic by Dark_Pheonix   |  last reply


#HackHalloween with Instructables AND littleBits!

Have you already created a bitified Halloween project for Instructables' Halloween contest? Forget double toil and double trouble - you can submit your project to littleBits' #HackHalloween contest for double the chances to win! Just make sure it include Bits ;) (^**> Click here for all the spooky details <**^) PRIZES You can win a GoPro camera and up to $3000 worth of Bits! JUDGES Get your work in front of the amazing likes of …. Neil Huxley, Creative Director for Commercials at Digital Domain We <3 Neil's special FX skillz. Check out James Cameron’s “Avatar” and Zack Snyder’s “Watchmen” to see what we mean. Tony DeRose, Oscar Winning Scientist at Pixar Tony combines his years of working at Pixar with his love of learning to inspire young inventors. CHALLENGE First, invent a creepy costume or hair-raising prank OR use one you've already made! Next, film your own scary movie featuring your frightful masterpiece! TO ENTER Submit your video and documentation of your littleBits creation on YouTube and the Community Project Page with the hashtag #HackHalloween by midnight EST on SUNDAY, NOVEMBER 1st. The petrifying project possibilities are endless! You can…. - Trick out your pumpkin by making it a hack-o’-lantern - Amp up your Halloween gear! Time to pull out that glowing skeleton costume. - Make a trick AND treat candy bowl: a prank to petrify costumed candy-grabbers. Muuahhahahahahaha! - Create that creaky, spooky sound coming from around the corner Want to host a meetup with your friends? We've put together a nifty workshop guide for you.

Topic by liza.stark   |  last reply


Halloween Decor Contest!

Hello everyone!  Every year for the halloween contests we the staff have to draw some lines between props, costumes, and decor items.  This year we've decided to draw the lines similar to where actual theater companies draw their lines.  Believe it or not there is a prop union, costume union, and set union.  It helps to give us some firm definitions of what item goes into what contest!   This year we are defining decor as: "Anything in a space that adds to the ambiance or feel of a space.  At the same time not an item being held by someone for the purpose of supporting their costume."   Examples below with notes on each of them.  If you have any questions feel free to comment below and I'll answer you to the best of my ability! Want to enter the decor contest?  Check it out here!

Topic by MsSweetSatisfaction   |  last reply


What can I make

I have about 40 wood blocks, 3 1/2" x 2 1/2" x 2 1/2".  I don't know what to do with them.  Don't want to send to recycle.  Not really sure if they are recyclable.  I'll attach a photo.  

Topic by carolb4   |  last reply


GreaseMonkey Script for Instructables - Auto-All Steps - Download it Now!

I whipped this up, still needs work, but it works (sorta)...You can download it hereNow, on the Explore pages, it will automatically take you to All Steps instead of the Intro step when you click on a link.I'm considering this open-source, so PLEASE post modifications, again I literally spent 2 minutes on this - including debug/testing time.I know you are saying "duh its open source, its a script! moron" But what I mean is that I am encouraging modifications.Code below if my server is down // ==UserScript==// @name Instructables "All Steps" Fixer// @namespace https://www.instructables.com/tag/type:instructable/*// @description Automatically loads All Steps instead of the Intro only// @include https://www.instructables.com/tag/type:instructable/*// ==/UserScript==//Made by Zachninme//Although this is open-source, always leave the above line intact. Thanks.var allLinks, thisLink;allLinks = document.evaluate( &apos;//a[@href]&apos;, document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);for (var i = 0; i < allLinks.snapshotLength; i++) { thisLink = allLinks.snapshotItem(i); if (thisLink.href.match(/\?/i)) { } else { thisLink.href += &apos;?ALLSTEPS&apos;; }}(I have zachninme.com registered, but it isn't working right... *sigh*)

Topic by zachninme   |  last reply


Transparant PNG creates strange artifacts

If a transparant PNG image is uploaded, it creates strange artifacts after the instructable website changes it's size. A nice platter of weird colors in the Transparent areas. Strangely enough if a ridiculous high resolution is chosen while uploading, 1024px wide or more it creates a correct image. (my best guest is that the image converter crokes on the image size, and does the conversion in the background later on).

Topic by FriedZombie   |  last reply


How to convert a jpeg format picture to DICOM format??

I have the hard copy of an MRI ( it's in xray sheets). Unfortunately I don't have it in a CD. I need to send this abroad but I can't send the x-ray of the MRI just in case I need it here. I have taken pictures of the x-ray using a light box. Now I have been asked to send the pictures in DICOM format. I have no idea how that is done. I have about  5 x-ray sheets and in each there are about 29 pictures. I have taken individual pictures of each and every picture. Can someone please help me to achieve this? I need to do this ASAP! Thanks

Topic by shazni   |  last reply


Text size in pdf download

How can I make the text in the pdf download larger? It is hard to read in the tiny size it is now.thanks,amy

Topic by amyoungs   |  last reply


Any recommendations for/against PDF to Word converters?

I need to convert an existing PDF (LaTeX source) document into MS Word format. A simple Google search (http://www.google.com/#hl=en&q;=convert+pdf+to+word) brings up a number of options, both Web based and installable. Having never done this before, I have no sense of good, bad, dangerous, crappy, whatever.I'd very much appreciate input from any experts who have done this before (Jake?), especially Macophiles.

Topic by kelseymh   |  last reply


BOOK OF FORMULAS PREPARED BY THE EDITORIAL STAFF OF POPULAR SCIENCE MONTHLY 1932

Http://babel.hathitrust.org/cgi/pt?id=mdp.39015026999022 the above link is VICTORY BEGINS AT HOME! RECIPES TO MATCH YOUR SUGAR RATION this next is the correct link, tested twice. babel.hathitrust.org/cgi/pt the following is OCR generated text, but there is a PDF read on-line only there too. The link to the catalogue was posted to the Internet Archive text forums today. NOTE, The PDF can NOT be downloaded to keep, just read on line. BOOK OF FORMULAS PREPARED BY THE EDITORIAL STAFF OF POPULAR SCIENCE MONTHLY RECIPES, METHODS AND SECRET PROCESSES GROSSET & DUNLAP • Publishers • NEW YORK COPYR1GHT, 1932 AU rights reserved PUBL1SHED JANUARY, I y J 2 SECOND ED1T1ON FEBRUARY, 1934 TH1RD ED1T1ON AUGUST, 1934 »On*TH ED1T1ON JULY, 1935 PUNTED IN THE UN1TED STATES OF AMER1CA

Topic by Lateral Thinker   |  last reply


The Boy Mechanic, c1930 Free for download

Http://www.archive.org/search.php?query=boy%20mechanic%20AND%20mediatype%3Atexts the following is OCR text from the scanned book, the link above shows 3 items, books one and two, the first item, from Project Gutenberg is a duplicate of one or two, but not worth downloading. 700 projects, which can be updated to use modern materials and used as the basis of an Instructable. I guess from memory the book is from the 1930's as I have an original edition I bought second hand from a library in the '60s. Pcoject Gutenbenj's The Boy Hechanic: Volume i, by Populat Mechanics This eEoot is for the use of anyone anywhere at no cost and uith almost; no restrictions whatsoever. You may copy ^'^r give it auay oc re-use it under the terns of the Project Gutenberg License included uith this eBool! oc online at huh. gutenberg.net Title; The Boy Mechanic; Volume 1 700 Things For Boys To Do Author: Popular Mechanics

Topic by Lateral Thinker   |  last reply


Cataloging School Papers

I spontaneously decided to catalogue every paper I get/do in school this year. I've run some tests with tesseract, a OCR program, and its decent. Except... I don't have a scanner... I'm thinking of giving it up, unless someone else would like to also try it out. If so, I'll put effort into procuring a scanner, or figuring a way to emulate one with a camera. Any random thoughts on this?

Topic by zachninme   |  last reply


Christmas Present: Post Apocalyptic Scale Model Help

I know that Christmas is a little over two months away but I need help. I'm making my older brother a post apocalyptic scale model car as a present. I have a 1/12 scale model of a 1969 Camaro Z-28 and I want to cut out the back and put model oil drums in it and a mini gun on the roof, but that's just for starters. I just wanted to know if the mini gun I picked out would fit or if it would be too big or small. Any other suggestions would also be awesome, I want to get this started real soon. Please help. Car: http://www.amazon.com/gp/product/B00DVNG1BA?psc=1&redirect;=true&ref;_=oh_aui_detailpage_o03_s00 Guns: https://www.scalehobbyist.com/catagories/Objects/m134d-minigun-on-m3-tripod/LRE00035060/product.php?s=0&t;=7&u;=4&pg;=2&ppp;=48&sb;=stocknumber&so;=a&e;=0 Other: http://www.megahobby.com/wwiigerman200loildrums4plastickit1-35lionroar.aspx

Topic by Fallen_Siren   |  last reply


lift table from old adjustable bed

Have two old electric linear screw actuators that work great. I Need a lift table but can't figure out how to put it all together. I don't know what width or type of metal use for the lift or the bolt hinges???.  Does it have to be a scissor lift or can I keep the actuators where they are at each end of the bed, wire them to work together and make a lift that way?  I need an affordable way of doing this and it only needs to lift to about 500 lbs. from 17 inches off floor to 30 inches off floor.  All framing is angle iron but seems heavy duty. Anyone's help if greatly appreciated as I just cannot afford to spend $ 1000. + on an electric massage lift table. The pic is after everything but the motor/actuators were removed. Thanks Deb

Topic by DebMaudie   |  last reply


New comment immediately shows as 8 hours old?

I just posted a comment on this page - https://www.instructables.com/id/Blink-for-ESP8266-native-like-arduino-using-Window/ and immediately it said the comment was 8 hours old? I'm on Windows 10, Google Chrome Version 45.0.2454.101 m My time zone is (UTC) Dublin, Edinburgh, Lisbon, London.

Topic by DonDavio   |  last reply


push button contacts fail

Hi, i disassembled my full-automated coffeemachine as the push buttons for programs failed. The buttons are a line of rubber and the contacts on the platine are toothed while each rubber contact got tiny plates that bridge the contacts on the platine. I guess that the contact plates lack of conductivity - any suggestions what i can do to improve the conductivity? I thought bout buying contact foil and glue it over the rubber contacts, but i don't know, if this is the best solution.

Topic by Luziviech   |  last reply


Portfolio Based Contest

As I was browsing the past winners of the Epilog contest, I was struck by the fact that not a single grand prize winner has posted an instructable using the laser cutter they won! I assume one of the goals of contests is to keep members making. So, how can Instructables help ensure those once a year, high dollar, innaccessible prizes find their way into the hands of makers that will use them to further contribute to the community? I'd like to see a contest where members could submit a collection of their best instructables along with a statement as to why they deserve to win. Members, judges and/or staff could consider the member's entire portfolio, community participation, achievements, site loyalty, and future goals when choosing a winner. I imagine it could be similar to the IoT giveaways, but on a more grand scale, like the Makerspace contest. 

Topic by Brooklyntonia   |  last reply


Where has the date posted from the stat box gone?

I have not been able to find the date posted on the new instructables. I sure it is there but I do not see it in the regular place. Thanks for the location info...

Topic by Random_Canadian   |  last reply


Hackerspaces and Makerspaces - your opinions, please.

I'm thinking about persuading my new employer to start a hackerspace or makerspace. As an aside, do you think the two terms mean different things, or are they interchangeable? If they are different, what is that difference? If they mean the same thing, which is the better term? Why?

Topic by Kiteman   |  last reply


photos not uploading

I am trying to enter into the newest contest and not all of my photos are uploading. They are all the same size and I am mot getting any error messages it just takes me back to the upload page after I selected the photo I need uploaded. I am on a samsung galaxy tablet so it wont allow me to use the new uploader I have to use the old version for some reason. Any suggestions? Thank you in advance!

Topic by JenniferB59   |  last reply


Eric Wilhelm Talks Halloween Projects on Science Friday

  Today (Friday October 16, 2015) Instructables founder Eric Wilhelm went on Science Friday to talk about some fun Halloween Projects for Science Lovers.  "Green fire, magic mirrors, fiber optic fairy wings—just a few of the ways to geek out this Halloween with do-it-yourself projects. Eric Wilhelm, founder of Instructables, joins Ira to suggest a few of his favorites, like an arduino-powered skull that follows you as you move, or truly realistic edible eyeballs (sorry, peeled grapes.)" Listen and follow along with this fun collection of projects.

Topic by Penolopy Bulnick   |  last reply


Music Shield crash

Hey! I need a help, i used te Music Shield v2.0 With audio analyser v2.0.. I play  1 or 2 songs he crashes, why? Sorry my english, im portuguese this is code i used: #include #include #include #include int analogPin = 5; // MSGEQ7 OUT 3 int strobePin = 12; // MSGEQ7 STROBE 4 int resetPin = 11; // MSGEQ7 RESET 7 int spectrumValue[7]; // MSGEQ7 OUT pin produces values around 50-80 int filterValue = 65; // 1 Bola int bola1 = 23; // 2 Bola int bola2 = 24; // 3 Bola int bola3 = 25; // 4 Bola int bola4 = 26; // 5 Bola int bola5 = 27; // 6 Bola int bola6 = 28; // 7 Bola int bola7 = 29; int Val1=0; int Val2=0; int Val3=0; int Val4=0; int Val5=0; int Val6=0; int Val7=0; void setup() {   pinMode(bola1, OUTPUT);   pinMode(bola2, OUTPUT);   pinMode(bola3, OUTPUT);   pinMode(bola4, OUTPUT);   pinMode(bola5, OUTPUT);   pinMode(bola6, OUTPUT);   pinMode(bola7, OUTPUT);   Serial.begin(9600);   player.keyDisable(); //keys disable first;   player.analogControlEnable(); //enable to scan the A4/A5   player.begin(); //will initialize the hardware and set default mode to be normal.   player.setPlayMode(PM_REPEAT_LIST); //set mode to repeat to play List   player.attachAnalogOperation(A4, adjustVolume); //Grove - Rotary Angle Sensor connected to A4,to control the volume   player.scanAndPlayAll(); //If the current playlist is empty,it will add all the songs in the root directory to the playlist.   Serial1.begin(1200);   pinMode(analogPin, INPUT);   pinMode(strobePin, OUTPUT);   pinMode(resetPin, OUTPUT);   analogReference(DEFAULT);   digitalWrite(resetPin, LOW);   digitalWrite(strobePin, HIGH); } void loop(void) { // Set reset pin low to enable strobe digitalWrite(resetPin, HIGH); digitalWrite(resetPin, LOW); // Get all 7 spectrum values from the MSGEQ7 for (int i = 0; i < 7; i++) { digitalWrite(strobePin, LOW); delayMicroseconds(30); // Allow output to settle spectrumValue[i] = analogRead(analogPin); // Constrain any value above 1023 or below filterValue spectrumValue[i] = constrain(spectrumValue[i], filterValue, 1023); // Remap the value to a number between 0 and 255 spectrumValue[i] = map(spectrumValue[i], filterValue, 1023, 0, 255); // Remove serial stuff after debugging Serial.print(spectrumValue[i]); Serial.print(" "); digitalWrite(strobePin, HIGH); } Serial.println("Analisador de som"); // 1 Bola if(spectrumValue[0]>150) {   Val1 =spectrumValue[0]; } analogWrite(bola1, Val1); if(spectrumValue[0]<110) {   Val1 =0; } analogWrite(bola1, Val1); // 2 Bola if(spectrumValue[1]>150) {   Val2 =spectrumValue[1]; } analogWrite(bola2, Val2); if(spectrumValue[1]<110) {   Val2 =0; } analogWrite(bola2, Val2); // 3 Bola if(spectrumValue[2]>150) {   Val3 =spectrumValue[2]; } analogWrite(bola3, Val3); if(spectrumValue[2]<110) {   Val3 =0; } analogWrite(bola3, Val3); // 4 Bola if(spectrumValue[3]>150) {   Val4 =spectrumValue[3]; } analogWrite(bola4, Val4); if(spectrumValue[3]<110) {   Val4 =0; } analogWrite(bola4, Val4); // 5 Bola if(spectrumValue[4]>150) {   Val5 =spectrumValue[4]; } analogWrite(bola5, Val5); if(spectrumValue[4]<110) {   Val5 =0; } analogWrite(bola5, Val5); // 6 Bola if(spectrumValue[5]>150) {   Val6 =spectrumValue[5]; } analogWrite(bola6, Val6); if(spectrumValue[5]<110) {   Val6 =0; } analogWrite(bola6, Val6); // 7 Bola if(spectrumValue[6]>150) {   Val7 =spectrumValue[6]; } analogWrite(bola7, Val7); if(spectrumValue[6]<110) {   Val7 =0; } { analogWrite(bola7, Val7); Serial1.println("Music Shield"); } player.play(); } void adjustVolume(void) //User-defined function { unsigned int vol_temp = analogRead(A4); unsigned char volume = vol_temp / 12; { if (volume == 0x55) volume = MAXVOL; //MAXVOL = 0xfe; player.setVolume(volume); } }

Topic by Jardel17   |  last reply