How to Replace PC Monitor LED Backlight with RGB LED Backlight?

Hello, Does anyone know how I can replace my monitor's LED Backlight to an RGB LED Backlight? RGB (Red Green Blue) LED Backlighting is superior to W-LED (White LED, which is just Blue LED without Green and Red). I don't even know why the mainstream LCD makers are trying so hard for superior picture quality, when CRT & Plasmas all used RGB light. It's not rocket science: they should just switch to RGB backlights, and replace them when they decay at their different rates. Anyway, does anyone know where I can find RGB LED Backlights for my PC Monitor? I know how to open up my PC Monitor's LCD panel, and remove the LED Backlight, but where can I buy RGB LED Backlights? Does anyone know where I can buy RGB LED Backlights?

Topic by davidwinst 1 year ago  |  last reply 1 year ago


New achievement: I made it!!

Hi all, May I suggest to establish a new achievement: I made it! Because we are makers and makers actually MAKE things. We share our I'bles but we also make I'bles from others. This would be also a good way to avoid million of I'bles about the same objects. what do you think about this?

Topic by BaptisteL8 2 years ago  |  last reply 1 year ago


Operating systems(parody)

I thought I should start a parody of the battle of operating systems. With the new Windows 7 coming out what a great time to start! Here's my crack at it. Do you think it is good? Post your own here if you would like.

Topic by Chromatica 9 years ago  |  last reply 1 year ago


Miscategorized Wanted/Free posts

I understand that people want to ask for things, and want maximum exposure of their request but, to the best of my knowledge, that's what the Wanted category is for. The free category is for things you are giving away, not things you're asking for. The forum is all messy with Free Pro Membership Giveaways, and Wanted posts, and it's difficult to sift through to see any actual posts for free items. Is there a way we can better avoid this, or be more strenuous about enforcing or self-enforcing this? Thanks! Sorry, not tryin' to be a jerk, but if you can put any kind of post in the free section, it shouldn't be a separate section, ya know? -Mike

Topic by mikemenzie 6 years ago  |  last reply 1 year ago


Wrong profile is displayed on commentator's profile hover display

While in the comments section of a post, the user's own profile is displayed when hovering over the profile picture of another user's comment. Precondition: logged-in Steps: 1- Select a post with comments. 2- Scroll down to the comment section. 3- On a comment, hover over the user's profile picture. Expectation: - Commentator's profile is displayed Result: - The user's own profile is displayed instead of the commentator's profile Extra Details: Browser: Google Chrome - Version 59.0.3071.115 (Official Build) (64-bit) Post used in pictures : https://www.instructables.com/id/Arrow-Through-Coke-Bottle/  

Topic by alexskills 1 year ago  |  last reply 1 year ago


Contest archive bug

I found a bug in the contest archive. I want to get ideas for the upcoming Make It Fly contest, so I went to the archive and found all the past contests with a fly theme. I clicked on them, but it just sends you to instructables' main page. There is no error or anything, just like if you went to the main page. With a little investigating, I found out that the contests that are in 2017 work fine. All the ones older than 17 don't work and act as stated above. I use Chrome, and wondered if that was the problem. I went to FireFox, but it worked! You could click on a contest in 16, and it would come up fine, but then I clicked on one in 15, and it went to the main page again. Does it do this to anyone else?

Topic by random_builder 1 year ago  |  last reply 1 year ago


photos uploading sideways?

I have uploaded my photos to my 'ible, "10 minute tutu" but some of the photos come in sideways, some upside-down. I cannot figure out how to rotate them once uploaded. I have reuploaded them and found the same problem. They are all rotated the correctly on my desktop and iPhoto. Any help would be greatly appreciated! https://www.instructables.com/id/10-minute-tutu/ Cheers Sarah

Topic by sarahfish 5 years ago  |  last reply 1 year ago


My instructable published but it is not visible.

My instructable says it published but the picture is darker that it should be and when I click on it I get this message: We're sorry, we couldn't find that one! I hope it isn't lost. The URL for the instructable is: https://www.instructables.com/id/22-Bit-Binary-Counter-for-Atmega328/ I have had trouble publishing the last three instructables I have written. Am I doing something wrong? Are other people having this problem?

Topic by JRV31 3 years ago  |  last reply 1 year ago


"HC Off-Line Occured" while Interface Sysmex Xp100 machine using serial cable

We are Interface Sysmex XP100 Hematology machine, but we got "HC Off-Line Occured" error. We are using Serial Port 9-pin female pins (2-->3, 3-->2, 5-->5) Our Code To Open Serial Port: SerialPort comport = new SerialPort(); comport.BaudRate = int.Parse(cmbBaudRate.Text); comport.DataBits = int.Parse(cmbDataBits.Text); comport.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBits.Text); comport.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text); comport.PortName = cmbPortName.Text; comport.Open(); Port successfully open, but when XP100 machine send output, it shows "HC Off-Line Occured" error. Please provide possible solution.

Topic by vishal2 1 year ago  |  last reply 1 year ago


Is this lion battery bank expensive? 150AH @12-14v

I was thinking about how much would cost making a lion battery bank with enough amps/hours to feed a car audio system (stereo + sub amp). Since this setup would drain around 25-30AH I definitely want a battery bank with around 150 AH capacity to get at least around 4 hours of music at max potency. Woulds this be so expensive? I know that lion batteries are getting cheaper and cheaper, but any idea about how much would this cost? I have made a research on ebay and amazon, I could not get an average idea, and considering many brands lie about the specs, I better first ask here to hopefully get some references. Thanks.

Topic by johanx4 1 year ago  |  last reply 1 year ago


Minting My Own Geocoin

I've been Geocaching for a while now and I wish to make my own Geocoin. I looked around all the "official" sites, only to have my head explode at the prices. $1,507.38! That's more than my high speed camera!Three for $27 with the fine print stating that you will more than likely end up paying $360-$540! Is it too much to ask for one or two custom coins at a cost in the lower double digits?! Why would I want to pay so much for something that will travel around in caches subject to anyone's whim? My question is, how can I make my own custom coin? The tracking code will be provided by one of the Travel Bug Dog Tags I own (at least those are cheap). Any help or advice will be useful, just let it be known that I am absolutely terrible at molding.The desired end result should look something like these rough sketches, front and back (followed by an example coin that I picked up and moved. No tracking numbers, no cheating!).

Topic by Spl1nt3rC3ll 10 years ago  |  last reply 1 year ago


How to stop email newsletter?

Is there a way to stop getting the Instructables email newsletter?  I de-selected all the options in the email setting under my profile but I still get emails.

Topic by dfvx990mq321pl 5 years ago  |  last reply 1 year ago


water table/play area

So I recently took my 3 year old to the children's museum in Indianapolis, which was great, but what really stuck out for him was the water table/play area. I think he would have been happy chasing boats around that table all day. But it got me to thinking that i could build one of these in the backyard (scaled down, of course!). I've been looking for plans to accomplish this, but everything I find is basically an elevated tub or plastic tote. The project I'm envisioning would be on an incline so the boats could follow a set path. Initially, I was thinking it would be shaped like a ring, so he could climb under it to be in the middle, but I think a rectangle would be simpler (and walking around the table would be good exercise for him!) The path would (on a gentle incline) circle around the perimeter of the rectangle, so boats would eventually end up near the starting place. He could then pick up the boats and set them on another circuit. Probably would need a pump to pull water from the end back up to the starting point, which would provide a current to help the boats along.  Any ideas or suggestions that could help this project along? Potential issues? One thing I'm not sure about is how to handle the water depth on the incline. I forsee the water rushing down the incline to quickly, leaving just a trickle to attempt to carry the boats along, leaving the boats "beached." Maybe there should be no incline at all and rely on the pump to provide the current? I'll attach some images of the super fancy versions we've encountered in museums, just as example of my inspiration.  

Topic by gharper1 1 year ago  |  last reply 1 year ago


How to harden cardboard

Hi everyone!  I want to make the initial of a name as a door decoration for my first granddaughter.  The letter is made of cardboard and I want to make it stiff so it doesn't bend with time.  I am going to use wool thread to cover it.  Appreciate any help given!!

Topic by Elisa Martinez 1 year ago  |  last reply 1 year ago


Remember CNC machining the prize?

Hi,  Wonder if anyone can help.  I remember sometime in the last 3 years there was a competition where one of the prizes was a cash voucher for a machining service. Like Shapeways but for CNC machining.  Just wondered if anyone remembers what the service was called? I have been asked to re create a spinning wheel and thought it would be cool to use there services for a part which would be very difficult for me to make otherwise.  Any help would be ace. :) 

Topic by world of woodcraft 1 year ago  |  last reply 1 year ago


Curious tools to identify.

Hi all. A few weeks ago I was visiting my cousin and we ended up going through a tool box full of things left to him by his father we came across two that we were at a loss to identify. The first is a brass cylindrical container about five inches long by 3/4" diameter with what I can only describe as a gouge attached to the inside of the screw down cap, it is blunt and shows no signs of ever having been sharpened so I'm fairly sure it wasn't meant for cutting. The second has a few clues of it's own with a manufacturer name and a part registration number, it also has what looks very much to me like a small cutting wheel similar to the kind you would find on a glass cutter, the small section with the words "British Made The Ideal" slides along the slot it sits in and the tip at that end is a sharp point. Any ideas folks? Thanks in advance. NG.

Topic by Nostalgic Guy 1 year ago  |  last reply 1 year ago


Cutting PVC Pipe - Lengthwise for guttering

Ok, here's one I thought I'd throw open to the masses.... I'm knocking off the last of a fully automated self-sufficient watering system that runs completely off grey/rainwater. However, the coke can guttering is not working in this position as it has previously :(  I was thinking of using PVC piping, cut lengthwise for guttering. However, I'm working out the logistics of cutting it. It can't be cut directly in half - this would be too shallow to catch the runoff from the chicken shed. and funnel it down to the tanks, so I'm looking at removing a chunk of the top.  And I also have no table saw. Wheee. What I do have Dremel (x2) with associated cutting wheels Jig saw (With associated plastic cutting blades) Circular Saw Mitre saw Hand saws (tenon, crosscut, hack, pruning, etc) So, here's one that I'm throwing open. With the tools I have, how would you do it?  I'm leaning towards the dremel, but there would probably be issues with maintaining a straight line (not that I care about some warp, it's a gutter)   Ideas? *EDIT*  Ended up using a jig saw with an acrylic cutting blade. Worked a treat.

Topic by taleya 8 years ago  |  last reply 1 year ago


Error adding new collection

Hi, Just tried to add a project to a collection but got the follwoign error message: XMLHttpRequest cannot load https://www.instructables.com/json-api/newGuide. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://www.instructables.com' is therefore not allowed access. The response had HTTP status code 405.

Topic by hugh_waters 1 year ago


Method or option for switching off the Irritating Site Jingle on every tab when signed in

As an instructables user signed thus I know how nice Instrutables used to be with out this child like Jingle on every tab ! Where is the option to turn this auto play jingle off please?

Topic by T3DT 2 years ago  |  last reply 1 year ago


HELP! Electronic sequencer for vintage door chime.

Seeking any manner of help in making an electronic sequencer for a multi-note doorbell. I restore old door chimes and one particular model from the 1940's-1950's has an electromechanical linear distributor that works as the chime sequencer. It has a limited life expectancy- long since expired- and it defies repair. You can see details of this device by looking up patent number 2245443. The task to be done though is just like that of any more common chime sequencer that uses a rotary distributor. The idea is to replace the electromechanical mess with modern electronics to time the power sequence to three or four 16v or 24v solenoids. Looking for any help… guidance, advice, moral support... but mostly hoping to find someone who can design and build a few of these, as I am largely clueless about electronic design.

Topic by knock 12 years ago  |  last reply 1 year ago


Never receive my prize

Hi I was a winner (First 5) of the cardboard contest. I already received the instructables prize with my robot t-shirt.  Thanks it is great :) A few weeks ago I received a mail (not email) from Fedex describing the sending of my prize. I'm surprise to see that it mentions the sending of the prize "Three Month HowToons Subscription". First because I don't received this pack, I only received the tshirt from instructables (thanks it is great). And also because I'm in the First(5) winners and it's normally six month HowToons subscription and not three. Could you please tell me if I will receive it? Thanks for your response. Have a good day

Topic by miniil 1 year ago  |  last reply 1 year ago


Passive Amplifier Optimized for a Single Frequency

First off, I know next to nothing about acoustics or sound science of any kind.  My idea is to make some sort of passive amplifier, like a horn, that is optimized for a single frequency, I'm thinking about 4KHz.  I have no clue how to go about designing such a thing and all the info I found on google was too complicated for me to understand.  Does anyone has any starting points for me or just general advice/suggestions?  Or, if you're feeling generous and/or really bored, would anyone like to design such a thing for me? Thanks ~Josh

Topic by Josh_Blackburn 1 year ago


Laptop powerbank 12v to 20v and upto 5A output using 18650 batteries with USB 5v added

Hello ladies and gentlemen.  Im looking into buying a laptop powerbank charger for my Lenovo X1 carbon that charges at 20v 4.5A 90w fast charge with upto 80% charge in 1hr. But it will also charge at 65w and maybe 45w I've read. But this will not give me the full power of the processors and gpu etc. Unless I charge at 90w 4.53A  there are are some powerbank that are around £100-170 for sale but these don't give full 4.5A. Mainly around 2-3.5A so will maybe or maybe not charge she give me full power of the laptop   so I'm thinking about making me own using 18650 batteries. Good Samsung or LG 2500maH plus cells. Prob around 3000mah.  Im thinking I could either use a buck down or step up and use the batteries on series from 3S to 8S and then 3-4P to give me around 10000mah. I'm looking for the best efficient output so I'm not sure whether to use higher input or lower input to give me 20v.  Or or maybe I could go the inveter route using a 12-24v 150w inverter?? Efficiency is the main thing here. What is the best option do you think. Should I use 12v or 24v for max effecient conversion.  Ive searched the instructables for such devices but cannot seem to find anything like this. Or would I be better to buy one??? I would want to add USB and USB c also. Defo USB 2.0.  Could you you please help me choose and find the answers please?  I fancy the DIY route because I'm looking into solar and battery power storage and also boost my range wifi range through either ptp or directional attenna. These projects will come after the laptop powerbank.  Any my help would be appreciated a lot.  Kind regards.  Scott. 

Topic by ScottL190 1 year ago  |  last reply 1 year ago


Version 2 of the Instructables Plugin for WordPress is out now

I just finished up version 2 of the Instructables Plugin for WordPress https://wordpress.org/plugins/instructables/ This plugin allows you to list instructables as posts or tiles by username, keywords, groups, all recent or featured on your WordPress site. 

Topic by MrRedBeard 1 year ago


What is your favourite movie?

Hi! What is your favourite movie of all time?? ~fritz707

Topic by fritz707 3 years ago  |  last reply 1 year ago


convert 240V 50Hz to 120V 60Hz

Recently I bought a Blender imported from US(to India) which runs on 120V 60Hz. I need a converter which Converts 240V 50Hz to 120V 60Hz. I got an idea of using a rectifier-inverter circuit such that by varying the gate signal can accomplish the aim. Is this idea a possible one?

Topic by ravic88 1 year ago  |  last reply 1 year ago


Can I add my Autodesk Screencast just like an Youtube video?

I create projects on software and document them on Instructables. But it's always better if I can make a recording of what I did, no matter how many screenshots I add. I use Autodesk Screencast for recording my desktop screen, but I can only add them as links which will take you to a different webpage. In simple words, they are not added like Youtube videos.  Is it possible to add Screencasts like I add as Youtube videos?

Topic by alamtania 1 year ago  |  last reply 1 year ago


Prototype for Business Sake!

I'm super excited to give a talk at Maker Faire this year! I hope you're able to make it! Talk Scope: Go from maker to entrepreneur by using prototyping tools to validate and build robust business models. Whether you have a dream of turning your hobby into a business or you’re interested in testing your innovative technology for commercial viability this talk is for you! VISIT HERE Background: As a Strategy Designer I work with clients to design relevant strategies and future business model options. I do this by providing teams with new tools, skills and mindset to stay competitive in today’s market. My company, Business Models Inc, is an international design and innovation strategy firm. We work across industries with large corporates, startups, and early stage entrepreneurs to help them develop innovative business models using our user-centered lean approach.

Topic by Carleyy 2 years ago  |  last reply 1 year ago


How do refrigerators work?

I've always wondered what keeps my beers cool and my cheeses fresh. Now I'm new to Instructables, but on the advice of a good friend, I thought I'd post this here:   I love to figure out, research, how stuff works. And then figure out how to tell that story. This one animation has a bit of a story itself, because it turns out I made the first version a bit too fast... I didn't do my research properly. Anyway, so here it is. I'm curious to know what you think!

Topic by Sebvandenbrink 1 year ago  |  last reply 1 year ago


Can any one identify these strange pliers?

I have been lent a pair of unusual pliers, and have found them to be incredibly useful for working with wire chains. I would like to buy a pair, but can not find anything that resembles them, so does anyone have any idea as to what these are called? Many thanks in advance!

Topic by ChrisM590 1 year ago  |  last reply 1 year ago


Small 2-stroke Turbocharger

I was wondering if any one had heard of attaching a small turbo charger to a lawn mower or weed whacker , if anyone has heard of it could you explain how, as i am anxious to try this with my recently salvaged 2 stroke and just see as much power i can suck from it.

Topic by firemanfu 10 years ago  |  last reply 1 year ago


Reusing desktop and laptop monitor CCFLs and power supplies to make a floodlight

I'm using a collection of broken laptop and desktop monitors I got free from a repair workshop to assemble a floodlight/spotlight from the CCFLs and their inverters. The desktop monitor power supplies take mains voltage (240 V) and power the CCFLs but also seem to provide a 5 V and 12 V supply to the electronics that control the LCD. The laptop inverters themselves accept either 5 V in some cases or 12 V in others so naturally I want to run the laptop inverters off the 12 V and 5 V supply because otherwise it's wasted. The problem is that I don't know how much power I can draw from the 5 V and 12 V of the power supply. I've had a look at the back of a monitor that says it draws 0.7 A at 240 V. What translates to 168 W which is more than I was expecting. Assuming that the four built-in CCFLs use 8 W each, that would still leave 136 W. Assuming the power supply is only 60% efficient that leaves (168 W x 60%) - (4 x 8 W) = ~68 W. I've no way to tell how that's distributed across the 12 V and 5 V but if it's 34 W each then I can draw 2.8 A from 12 V and 6.8 A from 5 V? I figure I can probably, maybe attach eight laptop inverters to each desktop PSU (four on 12 V (1.6 A) and four on 5 V (4 A)?

Topic by THX 1138 1 year ago


The cost and downside of modern life

In another topic we noticed that times have have changed in terms of repairs, spare parts or just finding a replacement for something. It not only seems that a lot of people no longer bother to repair their broken things but also that for those who still want to the available options are disappearing fast. Take the common lawn mover as an example: We can buy them in dedicated shops, the local hardware store, supermarkets and sometimes even at Aldi. But if you need such a simple spare part like a fuel hose or gasket for the carby you are usually lost unless you can order the parts from some online store at the other end of the world. Electronics are even worse, here a broken charging plug or just loosing the charger can mean people throw it in the bin to buy a new device. Splicing a rope? Why bother if a big bunch of knots does the same LOL Do you still remember these little repair shops that used to fix your waching machine, TV or sometimes even your electric drill? Where are they now? Or all these small electronics shops selling resistors, wire and complete kits? I still remember the times when I could take my radio to the local shop, the guy listens to the sound and lack of available stations and knew right away what parts I needed - and they were right at hand. For a few bucks extra he even replaced the broken bits if he had the time. After thinking a bit about all this I came to realise two things: a) We are getting lazy and no longer learn vital skills because modern life makes us think we no longer need these skills. b) Unless you can repair something yourself, labour costs mean a repair is often not worth it. Who here, under the age of 30 still knows how to make a good campfire from scratch, dares to take the lawnmower apart to fix it himself or simply bothers to stich up a little rip in his fancy tent instead of buying a new one? For crying out loud, a lot of kids don't even know how operate a washing machine by the time the lease the parents home for good... Schools seem to support these life changes by no longer teaching the use of pen and pencil, not to mention ink... All the kids get is a tablet or laptop and that means they don't even have to learn the language anymore - that what the spell checker does. If I dare to spin this further by another 25 or so years I only see chaos. Everyone is highly specialised, noone bothers to cook anymore and the third generation in the family no longer has any clue what the first generation is talking about. When my grandfather grew up life was hard. When my parents grew up life was all about expressing yourself. When I grew up life was intersting because everything was changing so fast. When my kids leave the house what will they say about this?... What do you think ? How much has modern life affected since you grew up ? And of course: Do think it is the right trend ?

Topic by Downunder35m 1 year ago  |  last reply 1 year ago


Underwater Jetpack Project. [HELP NEEDED]

Im planning on making an underwater jetpack something like this. However I'm a bit to dumb to figure out all the ESC and electronic components of brush-less motor systems.   Im also limited because this is a school project and in order to be reimbursed the materials need to come from amazon.  I will be using it in a chlorinated pool for demonstration but salt water resistance would be nice.  My requirements are as follows:  1.  Propeller must be covered as I may do another project after this one that requires fingers (im thinking 6in diameter pvc pipe with chicken wire or a metal grill over the ends) 2. Modifiable for different circumstances.  (I already cut up an old backpack and screwed a plywood board to it for mounting the propellers and  batteries, however I may decide to go with hand or foot mounting instead.   3. A trigger operable switch. (Cordless drill style although I don't care that much about speed control.   I'm planning this project to be for a senior year high school project (next year) so I have plenty of time. Do you guys think something like this would work for the propellers?  Their for air so I would expect significantly reduced performance in water.  However if they are to high rpm/low torque to spin properly in water perhaps I could keep the enclosure and switch out the motors for higher torque ones.

Topic by TypeNameHere 1 year ago


Free Rice Help End World Hunger

I found this website FreeRice.com that says "For each word you get right, we will donate 10 grains of rice through United Nations to help end world hunger"I thought this was pretty cool, all I did was use Dictionary.com to figure out the words.Any way to possibly "hack" this? To auto answer or something then leave it running ;-) (It would be for the good of the world, like a modern day Robin Hood or something?)

Topic by TheCheese9921 11 years ago  |  last reply 1 year ago


How can I convert a transmissive to a reflective LCD screen?

Hello everyone, So basically a reflective LCD screen is one that has no backlight, and reflects ambient light off a type of mirror reflector, to allow the image on the LCD to be seen via reflection. An example of a reflective LCD screen is the Gameboy Advance's LCD screen. A transmissive LCD is one that has a backlight that transmits light, but does not reflect light. These are typically 99.99% of the screens out there, such as PC Monitors, Smartphone screens, etc... Now I would like to know how to turn a Transmissive LCD screen, into a Reflective screen, like the GBA screen, without the need for a backlight. The reason I ask this is because I need it for outdoor use (to be sunlight readable), and backlights can't compete with the sun, and having a strong backlight drains battery. I have done a lot of research on this, but can't wrap my head around how the GBA screen works. I have removed the backlight off my computer LCD screen, and added a reflective film beneath the rear polarizer on the LCD screen, but it obviously doesn't make it reflective. I'm obviously missing a crucial step. Is the reflective film in the GBA, 'sandwhiched' somewhere in between the actual LCD screen? Does anyone know how to make a Transmissive LCD computer monitor, into a Gameboy Advance Reflective Screen?

Topic by davidwinst 3 years ago  |  last reply 1 year ago


Automatic Irrigation using d1 mini

Hi Everyone, I reviewed different automatic irrigation system projects here in instructables and other sites as well and i decided to gather parts to do a simple small project myself. One thing that comes hard is the programming part as I don't know any programming language. I'm looking for some help with code merging, explanation and some general guidance. Could you please let me know, point me to right direction and tell me what you think and if requirements are actually achievable? What I would like to achieve: Intention of this project is to have manual and auto irrigation system which will: 1. Measure soil moisture and dependently on the value activate the usb pump which will water the plant (preferably analog output that will show the measurements in %) 2. Manual activating the pump via hardware button and via mobile phone with internet connection 3. Distance sensor which should measure how much water is left in the tank 4. Email notification with info when to water the plants and soil sensor data regardless of the automatic process that has already started 5. Email notification with info about the water in the tank when it’s near empty 6. Dashboard preferably inside the network (not using third party like blynk or others) with access from the internet (I have QNAP that I think can be used). 7. If possible – have amazon echo (Alexa) read the sensor data to tell me the values and comment if the plant should or shouldn’t be watered or the tank should be refiled or not as well as ability to ask Alexa to start or stop the irrigation Hardware: D1 mini: https://wiki.wemos.cc/products:d1:d1_mini Wemos V2 Relay shield: http://hobbycomponents.com/shields/865-wemos-v2-relay-shield My relay is slightly modified: 2 small wires soldered to the vcc and ground so that when it receives the signal on d1 pin it opens and current flows to female usb connector supposedly activating the usb water pump. All this can be stacked together even with soldered wires YL-69 sensor: http://www.oddwires.com/yl-69-soil-hygrometer-humidity-soil-moisture-detection-sensor/ Ultrasonic Distance Sensor (HC-SR04): https://thepihut.com/products/ultrasonic-distance-sensor-hcsr04 USB mini water pump: www.goo.gl/yUABDd Button x4 if needed: Board x4 if needed: sample codes used in other projects: https://randomnerdtutorials.com/guide-for-soil-moisture-sensor-yl-69-or-hl-69-with-the-arduino/ https://create.arduino.cc/projecthub/nekhbet/using-the-yl-39-yl-69-soil-humidity-sensor-with-arduino-968268 https://community.blynk.cc/t/irrigation-relay-with-timer-esp8266-wip/700 Alexa enabled homemade cat feeder example: https://www.hackster.io/darian-johnson/alexa-powered-automated-cat-feeder-9416d4 Thank you very much in advance for your help and support.

Topic by wube 1 year ago  |  last reply 1 year ago


Spinner/fidget contest entrie

I am asking for some help, as I can not seem to enter my intructable into the fidget contest. I designed my spinner and published it today 7/8/2017 as an instructable, but it would not let me enter that specific contest. I could enter others. I went back into the instructions and as far as I can tell I did everything the way that it said I should. Any help would be appreciated. I manually added it to the contest but it has not shown up on the contest page, and it also now shows 2 instructables that I created that are the same. Thank you in advance for your help

Topic by DonW19 1 year ago  |  last reply 1 year ago


How should I improve my Instructables so that they get featured?

I started off quite well with Instructables. My Instructables were also featured. I was enjoying it a lot. Just when I thought that I'm understanding the platform and can contribute well to it, I was proved wrong.  From past few days, my Instructables were not featured and I'm wondering why? Am I not putting enough pictures? But I document each and every step! Am I making grammatical mistakes? But I check my drafts twice or sometimes thrice before publishing. Moreover, I use "Grammarly" which automatically detects the mistakes. Is the problem in my writing pattern? Well,  I don't write long paragraphs, I just make bullet points to make the steps easy to read and follow. Am I not providing enough steps? Apart from the usual steps, I also provide advanced steps for almost all my Instructables. Is the problem in the introduction or main image? I try my best to express my idea in the introduction and as for the images, I use the advanced Renders. Are my ideas not unique? But I search the website before working on an idea. Are they very simple to do? But, it's meant to be simple. It's basically for the beginners.  Well, I work on Fusion 360 and I only contribute to the Technology: Software channel as of now. Is this the problem? I feel that if I'm investing my time on a project, working so hard to document it and contributing to a community, that should be good enough. Else, is it even worth sharing? I have 20 Instructables now, of which only 13 are featured. Not every Instructable can be featured and I understand that but there must be something I'm not doing the right way. I'm seeking for some honest opinion here on how to improve my Instructables.

Topic by alamtania 1 year ago  |  last reply 1 year ago


Rewards for authors who follow up their instructables

Nearly every instructable I find interesting has dozens of questions at the bottom unanswered. Some of them are inane silly questions like "how much does this cost?" but others are quite often asking for help in finishing the instructable. It's difficult to enforce follow up on posts, but you could offer rewards in some way, even if it were a simple thumbs up/vote count system or something similar.

Topic by cosmicr 2 years ago  |  last reply 1 year ago


build-a-tank instructables contest!

Hi all you tankers out there! This contest is for people who love tanks and always dreamed of building their own! the 3 winners will be posted on my page! contest ends July 31st.

Topic by Lukethemonty 1 year ago  |  last reply 1 year ago


DIYers and makers, answer please!

I'm currently doing an internship in a portuguese company, whitesmith and I'm developing a tool that will hopefully help makers and DIYers and make your life way easier when you're starting to create something new and need a whole lot of materials. What I'd like you to tell me is what is the most boring step on the process of building something new. Would you consider searching for every single material in different websites/online stores and comparing prices the most boring step of that process? If so, would you like to have a tool that would do that price comparison for you? If not, what do you think is the most boring step? Thanks in advance :)

Topic by MarianaM56 1 year ago  |  last reply 1 year ago


Please can you Rate?

Please can anyone rate and suggest for my new instructable: https://www.instructables.com/id/Recycled-Milli-Volt-Power-Supply/

Topic by Patel Darshil 1 year ago


Source Code Window in Instructable Page

Hi, it's my first time to write an instructable. I wanna add a few lines of source code to demonstrate in a page. I saw many people has done that.I searched in google but couldn't find it. I think perhaps it should be something like HTML format. Anyone could help? Thanks very much! Jichun

Topic by penguin007 1 year ago  |  last reply 1 year ago


arduino uno programe

I am new to arduino programing and have below query. i am getting below content in abc and wanted to parse and compare with current time. char abc[128] = Fajr5,04:40 Sunrise6,06:03 Dhuhr13,12:39 Asr17,17:16 Sunset19,19:15 Maghrib19,19:15 Isha21,20:37 ; how do we parse and get something     String time[] = 04:40 06:03 12:39 17:16 19:15 20:37 ; and then split and compare with current time. i am getting time from ds3231, hh=hour and mm=minute then compare like below     int h = time.Split(' ')[0].Split(':')[0]; // this is 04     int m = time.Split(' ')[0].Split(':')[1]; //this is 40     if(hh== h && mm==m)     {         Serial.print("Fajr");     }

Topic by sayedfar 1 year ago


comments

Am I missing something? Does anybody know how to order comments oldest first. This most recent comment first thing is making me nauseous.

Topic by hazmat456 2 years ago  |  last reply 1 year ago


How to pick best battery for amplifier?

Hello, I ordered this amplifier and I need to pick best battery for this amplifier. Would be great to power it for at least 3-4 hours on maximum volume (200W rms subwoofer and 2x50W rms speakers). I need lightweight battery and powerful battery, size does not matter, budget is low so nothing overpriced I do not want.

Topic by RobertasP4 1 year ago  |  last reply 1 year ago


How to drive Bipolar stepper motor using MTD2006 dual H-bridge

Hi I'm trying to drive a Bi-polar stepper motor using MTD2006 bridge which I got from old copy machine.But when I download datasheet for this IC found that input signals must fed to drive the motor (ENA A,PHY A,ENA B,PHY B ) As I understand ENA signal must be (High) always! So I'm confused how to drive this IC using Arduino? Thanks

Topic by MHA6 1 year ago


Feature Request: Download attachments (Premium)

I would like an option, as a Premium Member, to download all attachments for a project. I mainly look around in the Arduino area and I would like to download all files the authors have attached at once, instead of individually right clicking SaveAs and typing the name of the file.

Topic by Sensath 2 years ago  |  last reply 1 year ago


electronic switch

Hi, i'm a bit new to electronics. I was wondering if its possible to turn on the flow of current by another electrical signal. Yes, i know about transistors and relays but these switches turn off as soon as the second current is stopped, how to make this change in switch permanent, i'll be precise, i'm working on a laser alarm system, and it works fine, but the thing is that when i block the laser, sure the buzzer goes off, but when the obstruction is moved, the buzzer turns off, how can this be kept on until turned off manually by a switch. i know it must be quite simple but i dont know, please help thanks

Topic by walee 1 year ago  |  last reply 1 year ago