Ornament Patch Giveaway: Trees!

UPDATE: Giveaway is closed! You can't have ornaments without trees! So to go along with all these ornaments we want to see some trees in the comments. So... If you want a patch, post a new comment with a picture of a tree. Check out my first comment below for an example. Never added an image to a comment before? At the bottom of the comment box, click "add image," then click "Choose Files." Pick your image and click "Upload" Don't do the Christmas tree thing? It can be any tree. Giveaway ends at 1pm PST! Get it in by then to get a patch.

Topic by fungus amungus   |  last reply


Constructing a realistic lasergame

I am making a laser game/tag system and I would like an IR detector/sensor that can tell the difference between a direct hit and a near hit fly by so that the "bullets"can still cause sounds on a near hit. The sensor should be as invisible as possible but should have a very clear and acurate detection. If there is no way I can make it work I will tweak the guns to be louder. Guns will have to hit over atleast 200 meters "For snipers". I know I need a double-convex lens but I just don't know wich LED I need. It would also help if next to a focused LED there is a way to send an infrared signal in all directions for just a while "For explosives". I have looked at ad hoc but no idea if it would work in there. For the suits I will most likely use sensors connected to a micro-controller/processor. Oh I forgot to mention that I am not using infrared lasers because they will most likely burn or damage the equipment.

Topic by xpalix   |  last reply


Need help with power supplies

I've been reading about electronics for a while and watching the Make podcast and I've finally started making my own projects. Anyway I have some cordless tools with 3 extra batteries but only one of them still takes a charge. So I thought it would be cool if I could put a power supply in one of my dead batteries so that I could plug it into the wall. I've been looking around my garage and thrift stores for a wall wart that would get the job done (the batteries are 19.2V Craftsman batteries I think they pull about 2000ma) but the closest I've been able to find is an old laptop power cord has a DC output of 19v and 3.9amps. So I'm not sure if that will work or if the extra amps will burn out my tools or something. Does anyone know if it would work? If not how can I dial down the amps?

Topic by cannedham160   |  last reply


Free altoids tins

Free?

Topic by Cpl.Ellis   |  last reply


Computers

My PC's splash screen shows the shop name from where I bought my PC. How can i Remove this? I attached screen shot to make it easy to understand my question. Please Help…

Topic by Shezi007   |  last reply


Upcoming Contest List Page Bug?

When I click the link to view upcoming contests, the page doesn't load. Is this just a "me" problem or are others experiencing this as well? 

Topic by Not_Tasha   |  last reply


Short range battery operated 2 part (door alarm type) distance sensor.

Hello all! I'm looking to design a range compact distance sensor that will sense 1-4 ft increments. If necessary i could modify a door alarm. id like to fab one or multiple if need be to sense the distances noted. I could utilize a buzzer or some way to record a voice that would alert to said distance. The battery voltage max is 4.2v dc and if it could be rechargeable that would be a plus. Any help on this would be greatly appreciated. Thanks!

Topic by Automan350   |  last reply


EMAIL SETTINGS

Hi, I have set everything on "Weekly", but I'm receiving emails every day.

Topic by humanoidvani   |  last reply


Wanted: Package Dropbox Monitor

We recently purchased an ElephantTrunk secure package drop-box.  We do not know when a package has been added to it. Could someone make either Weight sensor to tell us a package is in the box Sensor to tell us when the door was opened If possible to send a text to our phones to let us know.

Topic by DanniRedd   |  last reply


Electric Motorcycle batteries

Hi, I have an electric e-motorcycle (Road Runner -several years old) and I need to get new batteries ASAP. Inside it has 2 rechargeable batteries. Does that mean I need to get 2 - 12V batteries, whatever Watts I like, based on however much horsepower I need.

Topic by MielV   |  last reply


WiFi Radio / MP3 Player with ESP8266

Hello everyone, I'd like to make a new project: Reading in an usb stick with .mp3 files, and playing them. Moreover to swtich from mp3 playing to a wifi radio station. Basically I'd like to use a nodemcu ESP8266 for this project. This was my idea (s. Attachment) My questions: Does it work? Is the controller of the ESP8266 powerful enought to fit these requirements? Do you have improvements for this project? Best regards, Julian

Topic by julianpe   |  last reply


Industrial battery charger

Why the correct maintenance of batteries is essential to warn his exhaustion and to know when to replace it. With proper maintenance,can we avoid the battery failure? Im asking about battery chargers, Digital battery chargers, automatic battery chargers, traction battery chargers, Amperis battery rectifiers, battery charger rectifier! Thank you so much

Topic by GuGaC1   |  last reply


Battery Powered Programmable LED Sign

Hi all! I am working on building a sign to hold up at a concert I'm going to in a couple months, and I really want it to stand out!  To preface: I am very technically inclined but know very little about powering LEDs (have only done basic diode and battery combos) and have zero programming experience, but am a quick study.  What I am looking for is a solution that can be mounted on a 20x30" corrugated plastic panel, and run via battery pack with enough juice to last a 4+ hour concert. I know that one can easily buy battery powered LED strips, which I'd mount in an array on the plastic, but I'd really like to ideally be able to control the lights colors and show different bits of text, possibly via an iOS app.  I know this might sound quite ambitious but as my dad always likes to say, go big or go home! Anyone have any ideas where I can get started? Thanks in advance :) 

Topic by bitterfame   |  last reply


Click on instructable in email, go to instructable cannot download

This is a new one.  I get an email with a Topic of Interest and click on it.   I get to instructables, Normally I would be logged in  from my home PC.  Not happening. ​On any PC and any operating system try this:  Go to an email that has the URL for any project.  Result:  You will not get logged in to your account I log into instructables in a new tab on my browser. I copy-paste the name of the instructable in the Search window. The Topic of Interest comes up along with dozens of similar instructables. I choose the instructable I want and get a new window. My login does not carry to the new tab like it used to. This means I cannot download even though I have premium membership This means I cannot click on anything that is associated with my login. To save us both time and save you from asking me questions that you do not need to ask me. Please ​Try this:  ​Go to your instructable login page Search for an instructable.  For example, "Making PCBs at Home." You will get a page full of all kinds of projects related to PCBs. Choose "Making PCBs at Home".  Click on it. You will get a new window without being logged in. You will not be able to download it, nor will you be able to access a login window, nor will you  be able to do anything that is associated with your login This is a web coding problem and has nothing to do with operating system or PC. What happened?   Please fix it.

Topic by stannickel   |  last reply


POTENTIOMETER WITH ESC

Hello everyone!  I currently have a project in development which is lacking only one step. I am making a DIY Electric skateboard powered by a Arduino UNO board. I have some leds in the back working fine, the esc and motor work when I adjust the delay to 1300 miliseconds.. But my problem is to control the esc and motor via de potenciometer. Right now my potenciometer only reads me the values from 0-1023 but nothing happens. I have a map in my code but nothing is moving when using the potentiometer. Can someone help me out to make the potenciometer work? Here is the link to the instructables page where I have all the materials I used and also the code! https://www.instructables.com/id/DIY-ARDUINO-SKATEBOARD/ Thanks in advance!!

Topic by MauroGB   |  last reply


Hall effect sensor to trigger relay

Hi! I have a project that needs to sense whether water is flowing through a pipe. I bought a water flow sensor on Amazon (https://www.amazon.com/gp/product/B01LVWHJP0/) thinking I could use it as a basic switch, however, it's got a hall effect sensor and I don't understand how to deal with the voltage output. Measuring from the pulse signal to ground, the sensor swaps the polarity each time it's triggered: With water running, I see a positive voltage. Turn the water off and back on, voltage goes negative. My control system can't deal with this. What I need is a simple circuit to turn the sensor's pulse output into a contact closure. Can anyone help? Thank you!

Topic by rpdubz   |  last reply


Recover previous work

Hi, First time using instructables. I was finishing a tutorial and found out that I wouldn't be able to finish it that time so I closed it to finish the other day. When I came back I found out that it is not saved anywhere. Is it possible to recover it or do I have to do everything again?

Topic by vitor_vs   |  last reply



Sound Locator Circuit?

Hey all, Here's an idea maybe one of you solder-jockeys can help me out with: Ever have a sound that you'd like to find the source of, but your ears can't tell you where it's coming from?  I'd like to build a circuit to do that. I was thinking of something like three electret microphones with op-amps between them in differential mode.  That would give three signals that would be, presumably, the ratio of sound coming from each mic.  (And, therefore, an indication of direction.) Of course, I'd also like to get an adjustable bandpass filter in there somewhere to isolate just the sound I'm looking for.  That's the part that complicates all designs I've thought of. And then, if I could somehow figure out distance too, that would be the ULTIMATE! Here's one possible use case: A car makes a funny squeal noise a highway speeds. The mechanic takes out this device and magnets it inside the hood.  He runs a control wire back to the cabin. Once the car is in motion and making the desire noise, he adjusts the BP filter using potentiometer(s) and a pair of headphones. The device tells him where (relative to itsself) the sound is coming from. Your bill is less because the problem was diagnosed quickly without a lot of guesswork. Thoughts?

Topic by PS118   |  last reply


E coli incubator

I am building an incubator for ecoli.  Any comments or improvements?

Topic by drystreams   |  last reply


4 wire touchscreen

Hello, I'm currently trying to use a touchscreen that has 4 wires but 8 pins. I have a connector with 8 outputs, but I read some topics about touchscreens and everybody uses just 4 of them. So, right now, I'm using just 4 pins (It works with some noises) and my question is: If I use the 8 pins it will be better? If yes, how to connect them? Here is the touchscreen model: https://www.digikey.com/product-detail/en/nkk-switches/FTAS00-104AS4/360-3037-ND/4508087 I'm putting the screen configuration as an attachment.

Topic by maomevoador   |  last reply


Liquid dispenser wireless pour control

Hi guys, anyone knows the concept behind this https://www.youtube.com/watch?v=nAJvbFYtpIU. It is a wireless drink pourer, that can control the liquid flow. Can't find if something like this can be made with Arduino. Does some one have an idea if this can be done?

Topic by justforcavaliers   |  last reply


Technical pens how long do they last?

I have some old technical pens I think more the 20 years old. The kind that you refill and take apart when you need to clean them. I was wondering if any one knows if its time to throw them in the trash? They are Staedtler Mars Matic ink pens. They came in 3 classic standard sizes in a plastic case. I did know how to clean them nicely but haven't used them in a while. So when I did go to use them it made a mess. So I cleaned them again and it didn't improve anything.  I was wondering if the plastic distorts after awhile? So what do you think? Thank you for your answer.  :)

Topic by Treasure Tabby   |  last reply


HEMI no programing required !

Hello  I am interested in build a simple mini line following robot  like HEMI dome shape design, has any one here built this robot ! or ones like it, and information on where to get parts mini or micro gear box, and motor and mini wheels to fit as well as mini circuit boards or I will make one via you tube . . Thanks any help appreciated  David  

Topic by beginner 1    |  last reply


Wi-fi enabled window shutters

I want to automate (4)  sets of window shutters (called Plantation shutters.). I have the mechanical parts worked out which I plan to power with a servo motor on each.  Can someone help me work this out? I am somewhat handicapped now and have difficulty getting around from room to room.  There are a total of (22) actual shutters, but I will have the shutters on each window linked together with a rod powered by a positioning servo...four windows...four servos.  The operation can be simultaneous.  I do not need to operate them separately. Thank you for any help you can give.

Topic by hrp1937 


What about adding status post here?

I would like to suggest a post status here just like facebook. I would love to post my update on what's on my workbench or what I am currently cooking or what so ever. What do you think? Please let me know in the comment thanks!

Topic by WarenGonzaga   |  last reply


finding a best way of design solution

Hi. am finding a best solution for my design. look at drawing. there is 4 bars. about 2~3cm long each. their tip is holden on something in middle. when you pull up right black bar, right gold one will pulled down. "in same degree." when you pull down left gold bar, left black one will pulled up. "in same degree." likewise when you pull up two black bar, two gold bars will pulled down. "in same degree." its not just a normal hinge cause their move will interactive.15 degree up - 15 degree down. what can be a best (simple, durable, hard) solution?

Topic by Sung-hyeonY   |  last reply


Desk-turned-School Bag from waste cardboard box

Hello, I am working with one of the NGO in India which is working for the education of underprivileged kids in the slums.I want to make school bag-turned-writing desk for the children since they cannot afford to buy a school bag.Can anyone please help me in this please ?? 

Topic by abhijeet1   |  last reply


Corner Headboard

Hi, I am looking for idea for a corner headboard. I am new to woodworking and need something simple. Any ideas would be appreciated.  Thanks Chris

Topic by ChrisB763   |  last reply


Project issue

Whenever I have Microsoft Project open to read mpp document, it brings the whole system operation to a crawl. Forget about using a browser whenever that program is open; it slows everything down. Any suggestions as to what causes this?

Topic by Ross0298   |  last reply


3.5mm 5.1 Surround Sound Switch/Splitter Box for 2 inputs

Hello, my first post here, so it might be in the wrong section, please move it if necessary. I have quite a complicated problem. Currently I have 1 PC with 5.1 speakers and recently bought a 5.1 headset with microphone. Already  I have a problem when I want to switch between speakers and headphones, each time I have to go under the desk and change the cables :/ In a few months I plan to buy another computer (old one is used up, but it is still quite good equipment). And here begins the stairs. I do not need a second monitor or keyboard plus a mouse, so I want to buy a KVM (keyboard / video/ mouse) switch. The mouse and keyboard are USB ones, so the KVM must support USB. Monitor and graphics card are connected through DVI, which I want to keep, so I must have a DVI KVM. I also want to be able to switch between headphones and speakers. So I thought about this: cs1782 But this works only for one 'source': I could use either speakers or headphones, switching from one PC. But I would like to be able to choose whether I want to use speakers or headphones on both of the PC, so I was thinking about doing (I have not found anything like this to buy, which is strange, because more and more people have the same problem) something like this. But as to be able to do: - Switch between headphones and speakers at PC1 - Switch between headphones and speakers at PC2 - Switch between PC1 and PC2 - Using headphones on PC1 and speakers on PC2 (or vice versa) simultaneously. I've came out with this picture, which should  be able to do this: - Switch between headphones and speakers at PC1 - Switch between headphones and speakers at PC2 - Switch between PC1 and PC2 But I still can't figure how to make this: - Using headphones on PC1 and speakers on PC2 (or vice versa) simultaneously. The more I  think about it, the more I get the idea that it can't be done via DPDT switches, but I don't know what to use. Is it even doable? I have no experience in electronics (I did solder couple of wires in my life, but nothing more), but I have a lot of enthusiasm, so I could make such magic boxes, if I knew how. Thanks in advance for any suggestions, ideas, etc. I also hope that this problem will be useful to someone else.

Topic by ratm4n   |  last reply


Shock alarm clock

Hi,  I want to build a Alarm that will shock you when the clock hits a certain time i am new to this could someone help me out ?!

Topic by josephwilmott2   |  last reply


How to make 12V 2 switch touch panel for car?

Hi guys, I am looking to make a 2 button switch panel for car. I'd like to have capacitive buttons rather than ordinary switches if possible. Something similar to this but smaller and only 2 buttons 1 button needs to be momentary as this is an external power button wired into tablet. 1 button needs to be latching (press for on, press again for off) this controls the accessory power (amp/usb hub etc linked to this) I would like to have them backlit and behind some acrylic so you can just see the light but activate the switch. The capacitive touch buttons I have seen so far all seem to be under 5v and I'll need to work with 12v since it will be inside car. Any help on this would be greatly appreciated 

Topic by alexmallaburn   |  last reply



How make round 5" air duct valves?

We moved into a large (for us) house, and we only use a few rooms. I managed to repair the furnace, but the first bill was astronomical. Beyond the leaking windows and lack of insulation, the problem is that, as it is, we have to heat the whole house. I've discovered a temporary method of blocking vent tubes to unused rooms (by stuffing the tube with a rag), but I want real valves. I've heard they are called air duct dampers.  My vents are on the ceiling aimed down.   So, I've seen these check-valve 5" ones https://goo.gl/8zRGLX but I haven't found any that would open and close manually.  But this doesn't seem like it would be difficult to make. I'm toying with the idea of using a cone-shaped "lid" with some kind of springy cord holding it in. Does anybody have any ideas?  How do I make a manual (or electrical solenoid, I suppose) operated valve for a 5-inch round air duct?

Topic by nehmo   |  last reply


USB to ps/2 keyboard adapter

I gather that computers that only have ps/2 sockets (no usb connectors) cannot simply use a basic adapter for plugging in a usb keyboard. I have never tried. Would it be possible to create an adapter to allow a usb keyboard to be used with such a pre-usb computer ? I found one arduino project that converted ps/2 to usb and I imagine that to be more difficult.

Topic by scubascooby   |  last reply


What are your favorite online translators?

There are a lot of translators online. What are your favorites? 

Topic by Culturespy   |  last reply


How do I see my own collections

A newbie question. I added some instructables to collections using the +collection button. But how do I actually see my own collections? Where do I click? I went to my profile page but there is no where that leads to my own collections.

Topic by QinyuanL   |  last reply


Trying to turn on and off leds with tv usb

I have LED lights in the back of my tv ( ambilight ), but they stay on when the tv turns off . What I am trying to do is to turn off with the USB on the tv with a relay . I'm thinking if it is possible to use the 5v from the tv usb to power the relay so when the tv stars it gives power to the usb , starts the relay, that is connected to the "+" of the leds and makes the connection to turn on the lights. My question is i'm not a electronic guy and I don't know if it will damage the tv or the lights . should i use something else like a diode? This is the relay i'm using https://www.amazon.com/Songle-House...2403297&sr;=8-2&keywords;=songle+srd-05vdc-sl-c

Topic by pastos 


Contest

I have entered into 3 of the contest,I am sure that they are over but never did see if I got any votes.Is there a way I can see the votes and where I was finished in this contest.Thanks, it's been fun doing them so no sour grapes here just curious that is all.

Topic by LarryF29   |  last reply


Web Interface for Raspberry Pi

I'm trying to control a led on  raspberry pi 3  using apache server  with  php programming. I am following this instructable link  https://www.instructables.com/id/Simple-and-intuitive-web-interface-for-your-Raspbe/   I have tested server, its working with simple php program but when I write program for led, it doesn't work When I check file it say permission denied  How to resolve this issues ?

Topic by Rehan11 


CLOSED - Halloween Postcards 2017!

Did you miss out on the postcard? Don't worry. You can get your very own papercraft vampire robot right here! Don't forget to check out the photo challenge we have going on with it. You could win a Kodak Digital Camera or Cat Ear Phones! ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~ It's that time of year yet again! We want to send you a Halloween postcard. In order to get one, all you need to do is fill in this form. That's it. Please fill out the form by Sunday, September 10th, 2017. Again, if you want the postcard, please fill out the form. Do not post a comment with your address or send me a PM. I need your information in the form to get you the postcard. Also, please fill it out as completely as you can. We are expecting thousands of responses and will not be checking for mistakes. If the postcard can't be mailed, it won't be. Don't forget to use the FORM!

Topic by Penolopy Bulnick   |  last reply


How can we convert a wifi card (intel pro wireless) to a usb wifi adapter.

I have a intel pro wireless intel pro wireless 3945abg.(Grabbed it from my old laptop) I want to convert it to a usb wifi adapter. https://www.instructables.com/id/Running-mini-PCI-e-3G-card-with-USB-mini-PCI-e-t/ I m taking some help from this article. Help Needed! Thanks in advance.

Topic by TechnoM2 


PLEASE HELP!!!!!! Moisture sensor plan not working - or is it me :-(

Can anybody PLEASE help, I am in the UK and eager to grow melons next spring. I need to know when the roots of the tub need water so decided to make a moisture sensor. I found a ‘plan’ online, bought about £20 of components (I need two sensors) and have spent all afternoon TRYING to get it to work. One was connected via a circuit board and the other without. Neither work, the LED comes on on both versions but does not go out when the terminal probes are put in water, as they would when the plant roots are moist. i enclose the original internet plan and a (poor) picture of my ‘‘air connection’ version....should this plan work? And if so, why isn’t it? thanks in anticipation

Topic by TN1946   |  last reply


Hmr software

When I post programs using hsm software my haas milling machine alarms out. Any suggestions on how to fix this?

Topic by jerrybudzinski   |  last reply


Led Clock Feasibility - my first arduino project

Hi guys and good morning all from a total newbie to this world. The aim of this post is to ask you guys if i'm going the right direction to master the knowledge to build my project. To cut a long story short, my plan is to build a clock mixing the old style design of reclaimed pallets with a touch of modernity using LEDs to mark hours , minutes and seconds. The aim is to keep all the lights ON once the given time has passed. To be clearer, if the minutes are "18" i would like all the previous leds (0 to 17) to be all on. I'm pretty sure that the knowledge to build this resides in mastering Charlieplexing and Shift Registering (please correct me if i'm wrong). So at this point in time, i know what i have to "study" to give life to my project the way it's designed in my mind. I've already seen some clocks working this way, hence i'm pretty sure it can be done (happy days!). Point is that i've only seen clocks where this design is achieved with only 1 row of leds. My aim is to swith on 4 rows at any Tn time. So, for the minutes, once it reaches 59, i should have 59 * 4 = 236 LEDs ON simultaneously (for the minutes only... plus N for the hours). Can anyone point me to the right knowledge to be mastered to achieve this? I'm assuming is a problem of sustainable voltage (resistors, power supplies etc etc) leds in paralel/serial; multiple shift registers and so on so forth... I'm attaching a small mock-up to be understandable on what i would like to achieve (it's based on the first 5 minutes of each hour). I've marked "Ok" the first row, meaning that since i've seen something similar, i'm confident in knowing what needs to be mastered to achieve that result. The "?" refers to what i haven't been able to understand if it's achievable or not (row 2, 3 and 4). Would it be advisable to build a Matrix for each of the 4 row (with N 8-bit microcontroller such as SN74HC595, for each row) , or can be achieved with a "simple" 4 X 60 matrix? Thanks a lot in advance to everyone "wasting" their time to give a helping hand! Seeya! Ivano

Topic by IvanoArduino   |  last reply


Single Piston Air engine

Hi all, need help/ advice in designing a single piston air engine, It is part of a mechanical engineering course I am currently studying, the only parameters i was given are - Single cylinder with vertically displaced piston with rotation of the input shaft on a horizontal axis - free standing with an operating envelope of 300mm x 300mm x 300mm - accommodate a nominal piston diameter of 20mm - engine capacity of 6.0cc / 6000mm (cubed) Any help would be greatly appreciated Thanks in advance

Topic by DavidO242   |  last reply


Alternative to keyboard

On top is a joystick like an NES joystick. It registers 8 different directions: up, down, left, right, and the in-betweens of those and is controlled by the thumb. Then there are 4 buttons, one for each finger. The joystick replaces the trackpad of a laptop and hopefully is also 'clickable'  to act as a 'left click button. I'm not sure what would do the right click button. Combinations of button presses and joystick directions would replace the keys on a keyboard. I only have the use of my right hand. I initially thought of this as a device for handicapped people like myself, but it would also be good for people lying in bed. The concept maybe could be made into a cell phone case with physical buttons that would allow people to text without looking at their phones. The device is a lot like the nintendo wi remote, but not quite. Maybe a wii remote could be hacked to make a prototype. I wouldn't know how to do that and I wouldn't know how to program it, that's why I'm posting, to see if someone could tell me what kind of skills/knowledge would be needed to make this idea happen. Any suggestions or offers to help are welcome. Thank you!

Topic by avocadostains   |  last reply


Musical Parrot Toy

Serious request... my Parrot (African Grey) loves music. I would like to buy/build 'Parrot-proof' musical 'instrument/s' device/s that he can play, perhaps triggered by either percussive impulses from his beak and/or his vocal range. This would help him remain stimulated when I am out. All genuine replies welcome... :) The closest thing available is this, but it isn't very versatile (only pre set sounds) + not very musical  http://www.petsathome.com/shop/en/pets/bird-toys/jm-bird-babble-ball?pageSize=45&orderBy=1#

Topic by ParrotFX   |  last reply


Post your best jokes here!!!

Whoever posts the best damn joke there is (judged by me) will win a free patch.(not a huge prize, but I hope you still try) Note: The jokes should be appropriate, with no bad language. (8+) The comp has been won! ilpug won with his hilarious panda joke! I hope you all enjoyed each others jokes!

Topic by HMice   |  last reply