Help with wiring a rgb light strip please!!

Mokungit 50pcs WS2811 12mm DC5V Input Diffused Digital RGB Wire Cable LED Pixels Module String Light WS2811 IP68 Waterproof Addressable Dream Color Pixels Exposed Light String This is the strip I got, and the controller has different colors!! I just want to know the correct way to wire this so I don't mess it up! Thank you!

Topic by jwolf2655   |  last reply


control dc motor using pid processing and arduino

Hi forum I done code for pid to control dc motor speed but the output value gives 0 or constant value 250 and the set point is still same 100.Hereby I attach the PID code.

Topic by satya_82   |  last reply


Universal motor projects

Hello, everybody. I took apart a universal motor recently. The motor itself is broken and does not work. However, I would like to know whether I could rewind the copper coils around the silicon steel motor core in order to make a toroidal transformer.  I have heard that motor cores are sometimes grain oriented, which would significantly reduce my transformer performance. This motor is, however, about a decade old. I want to use the existing motor coil as a primary, and then wind thick power transmission line wire as a secondary in order to get a high amperage output. Is this possible? I would also like to know whether there are more interesting projects out there which I could attempt. I have heard of people making generators from motors, for example. However, winding a transformer is my primary goal. I have attached pictures of the motor. Please tell me whether the above mentioned transformer is feasible. Sorry for the picture quality. Thanks in advance.

Topic by TheLightningConductor 


Create a motorized rotating TV

Hey all,  I am trying to create a TV mount that can switch from horizontal to vertical at the click of a button but I really have no idea where to start. Is there a way I can motorize this mount? https://www.amazon.com/Mount-It-Low-Profile-Landscape-Portrait-Panasonic/dp/B005MHGCSK 

Topic by TylerL62   |  last reply


Small variable power supply from car charger?

A friend of mine gave me a bunch or car USB charger used in his company to charge the tablets and phones the delivery drivers use. His problem was that they ordered 10 exclusive for Apple products and 15 generic ones that have the standard 1amp/2.1amp USB outlets. I was asked to take a look and see if the problem is easy to fix. Long story short it was as apart from 2 blown fuses they all suffered from bad solder connections for the cigarette  lighter contacts that failed. Anyway I looked the chips up used to regulate it all and to my surprise the datasheet said they are "variable" from about 0.3V to the max supply voltage of 32V or even 40V. Checked two of mine and same story for one, the other is dirt cheap unregulated and only used to charge a flashlight. But it made me wonder... Since the output voltage is created with a simple resistor divider giving the right feedback voltage it is very easy to adjust them to whatever might be required. Could be a far better option than our standard adjustable voltage regulators and easier plus cheaper than building your own circuit. All the benefits of short circuit protection, under voltage shut off and self regulated max power to prevent overheating for 5 bucks from the next china shop. Give it a go one day before you power wasting old school regulators ;)

Topic by Downunder35m   |  last reply


Cheaper method for 3D screen

Hey everyone.  I am new to instructables but you guys have really inspired me to see what I can come up with.  By taking a few ideas I have come across on the net, around here, and a quick epiphany after watching a 3d movie, I have an idea.  (sorry for post formatting, still trying to figure this out) I am trying to pull the parts together right now but if someone could build it first they could have the instructable.  Well, to the idea then.  Basically, using 2 ideas from Johnny Chung Lee(a grad from Carnegie Mellon University) that he has released to the public with software(found at johnnylee.net), any 2 digital projectors, and several polarized glasses received from movie theaters you can build your own 3d projection system with eye tracking to add perspective. The two projects of johnny Lee's we are using are Wii-mote eye tracking and Projector Stitching.  Projector stitching will be used to automatically calibrate the projectors to perfectly overlap so the offset images are accurate(absolutely critical for 3d images) so we don't have to and the eye tracking would be used by software to add perspective to any live 3d environment/game(not necessary).  The polarized glasses are used both by the projectors and the user so atleast 2 pairs would have to be acquired.  Lenses are placed in front of the projector to filter out all but the correct pole of light.  This will dim the projector slightly as light is being lossed but what you get is cheap polarized image.  I have tested this and it does work if you project light through the back of the lens(the eye side).  The only thing that presents a problem is the projection surface.  Most surfaces scatter and remove polarization from light.  The screens at movie theaters are specially made to not do this.  I am still researching a cheap material that has this property so I can use it but if any of you find it first have at it.  I just want the instructable up so we can see what we can do with it.  What you get with this setup is two overlapping images that can be filtered effectively between the two eyes.  This is what enables a 3d image to be sent.  Add in the eye tracking and you have a 3d image that adjusts based on the position of the users head.  This adds an amazing degree of interactivity to a 1 player game as now you have depth added to the experience and moving actually does something for the game.

Topic by critterfluffy   |  last reply


diy car radio / bluetooth / usb

Hi guys, I was hoping for some guidance. I have an 1995 audi a4 and the 1 din cd/radio player  you see is kind of outdated. I was looking for a replacement unit that is simple, clean looking and has Bluetooth / USB connectivity. Didn't find any and in case I did find something it looked ugly or had bulky buttons or tasteless lights glowing all over the place. So I thought maybe a raspberry pi could replace the current unit but this brings up a whole s*itload of  problems. 1. Is there a way to power the pi with the power cable that powers the current unit? Are there any converter cables? 2. Currently as you can see there are 4 rca cables in use. 2 front and 2 for the back. The latter go trough an amp in the trunk. I stumbled into a small board with two rca ports for the pi. Can I use a splitter and plug in all 4 cables to that? As you can tell already by now, electricity, current, amps and all that is not my slice of pie :P 3. If we could sort these out as a first step we could move onto adding a power on / off sort of thing so the pi doesn't  drain the car's battery when not in use? Maybe add a touchscreen later on. Print a case for it and hack it into the car's console somehow, but these later ones I could sort out on my own. The foundation tho'  would be the first 3 questions. Thank you in advance for your feedback. Much obliged and much appreciated! Cheers!

Topic by dtbsz 


Single Color LED strip to Arduino

I am currently working on a project for school and I'm needing some help at wiring up a single color (white) LED strip.  I understand that I am going to need more than just the 5V power supply from the Arduino board itself.  Possibly an outside power source and maybe some NPN's.  If I can get any help with this, I would appreciate it.  At least a point in the direction maybe.  Thanks in advance.

Topic by WillA2   |  last reply


Arduino Spanish miniCommunity!

Hola a tod@s! Hace mucho que rondo por aqui y ando terminando el que sera mi primer Instructable. Practicamente la totalidad de lo que hay aqui esta en ingles, y con mas o menos dificultad todos andamos por aqui. Mi intencion es conocer a algunos de vosotros con los que comparta idioma y aficiones. Seria como un pequeño rincon donde preguntarnos y ayudarnos con nuestros experimentos jeje. Ppr mi parte, no soy especialmente habil con las manos, pero me defiendo. Mis conocimientos de electronica son lo que aprendi en BUP y COU en su dia, lo basico...muy basico. Donde me defiendo un poco mas es con la programacion. Hace años que practico, aunque no soy demasiado constante y ademas autodidacta. Ademas, me defiendo perfectamente con el ingles, por lo que no supone un problema para mi y podria ser de ayuda para alguno si se diera el caso. Bueno, pues lo dicho, chico busca chic@s a los que preguntar cositas y a los que sera un placer ayudar con lo que se pueda. Un saludo!

Topic by Calfa   |  last reply


Building a controller Possible for Retro Consoles?

I'm trying to figure this out if it even possible to build a custom controller and use the Console's pinout like the Sega Master System's to be read on the Sega Gens as a Master System Controller and can it be done if I got myself a prototype board and make it myself? here's a broken USB NES Controller I'm gonna turn into a SMS Controller - so is this possible to make my own using tactile buttons for 1 and 2 plus other buttons for the D-pad then hook them up VIA the SEGA Master System's Pinout to read to the Sega Gens?

Topic by SuperScourge   |  last reply


LED Matrix Logo

Hello, I am looking for help/advice with small project I am undertaking. I want to make a logo out of 50/60 single LED's as a gift to someone. I have attached a picture of the logo. Should I make it on a blank circuit board, what is the best way to connect the LED's (2.2V) and solder them, how many resistors are needed? Any information is gladly appreciated :)

Topic by EimearF   |  last reply


MODI: Create Anything You Want with Robotics of Things

Hi, MODI is our new product. For easy understanding about our product, MODI is an easy version of Arduino. You can just connect modules with a magnetic connector. In addition, we provide a coding software tool to make a complex movement, so it is available to make IOT devices, DIY, and toys. Can check on Kickstarter page  Thanks

Topic by luxrobo 


Need help with grandpa's old router

I'm not sure if this goes in tech, so I'm open to moving it if need be. I got grandpa's old router. I'm starting up my own wood shop and want to make a router table for the end of my table saw. The router he has has a housing/assembly on it, but it's fixed, not "plunge" or height adjustable. Since I am COMPLETELY new to routers, having never used one- are there aftermarket router housings that can be adapted to fit other sizes, or are they all the same size? I don't know the right questions to ask so I haven't been able to find what I'm seeking on the google, but I'm sure it's out there. Any tips or pointers would be helpful. Additionally- it's a Skil model 938, probably from the 80's. Bearings are going out. If I can't find an adjustable plunge assembly, would I be better suited to find a used router kit at a flea market for like 50 bucks, or buy one new? Thanks! Hoping to get routing this weekend!

Topic by Phoenix17   |  last reply


Bluetooth Transceiver for headsets with a mic

Hello Everyone, I would like to build a module that is a Bluetooth transceiver that I can connect to a two-way radio. I have seen many transmitters for Bluetooth but they don't have the correct connection. I need a Mic/audio/Ground type. Can someone here point me in the correct direction. Thanks Hobs

Topic by PilotHobs   |  last reply


Java: install, and use an API? (SIGAR)

I downloaded the Sigar API for Java(http://support.hyperic.com/display/SIGAR/Home). I want to use it in Java, but I don't know how. After I've downloaded it, where do I put it? Is there a certain folder in my java JDK I need to put it?

Topic by metrogdor22   |  last reply


Theme Park Holiday Light Effect

Hi, I work for a small theme park. A third party company built one of our new holiday displays.  It consists of 45 large 'ornaments ', each lit with an AC bulb. I've been asked to provide a way to control each one independently and create a pattern which will repeat.  Sometimes only one bulb is lit and sometimes up to 7 are on at the same time.  The problem is I'm looking at 45 AC plugs!  My thinking is to buy 45 solid state relays. Then can I hook them up to an Ardiuno? I know very little about Ardionos. Which model and how many? I would truly appreciate it if someone could help me get started. Thank you

Topic by lllggg85   |  last reply


UsbSafe² . Usb Safety Device! OpenSource, EEvblog

I have designed a new usb anti Juice Jacking device which will protect your private data from harmful attacs. It will also protect your Hardware by over voltage protection and current monitor. Check out the video below when Dave from EEVblog finds it in the mailbag. Also a short demovideo is attached!! Functions has been added and the features now are: 1 Anti Juice Jacking function. 2 OVP. Over voltage protection. 3 Current fuse functionality. 500mA/900mA/1500mA/2100mA/2400mA This project will go live ASAP at: https://www.crowdsupply.com/karoly-simon/usbsafe2 At launch design files will be public! Navigate to prelaunch page and subscribe for release info!

Topic by Karoly Simon 


Help me guys! I need to measure a motors lift weight(for a flying machine)!

So, I'm making a hover bike. Yea, dont judge me. And i have to measure the motor(s) needed to lift my bike. I have measured that my bike will weight about 75kg with me without the motors. So i need motor that can lift 75kg+(motors weight) at a power consumption of (something). Help please? :D

Topic by ТерентийМ   |  last reply


Help for making an Arduino powered Nixie Bar music visualizer

Hello everyone! I would like to make a nixie bargraph music visualizer which is controlled using an arduino. The problem is i can find guides on making one without the arduino, or with the arduino but without the nixie bars. How do i combine these two together and what about the code?  Are there some kind people on this forum who will assist me accomplish this goal? :)  https://www.youtube.com/watch?v=___XwMbhV4k <- Arduino https://www.instructables.com/id/Nixie-Tube-Music-Visualizer/ <- Nixies

Topic by rasmussen105   |  last reply


What's Inside a Compter?

Hi...  This forum topic is dedicated to things inside a computer. If you have any information or questions regarding computers. Over here is a power point as a starter to the parts inside. Cheerio! super_me

Topic by NebulaIX   |  last reply


video pinout

Hello, I am trying to connect the LCD from a Toshiba 4020 to a raspberry pi but i cannot find the pinouts of the video connector, and I cant find anything online about this laptop, does anybody know how to convert this connector to HDMI or would i need a converter? 

Topic by daniel12354   |  last reply


Keyboard With On-Board Text Storage

Here's a thing I want, but have no idea how to build: THE INDEPENDENT KEYBOARD It doesn't care about computers! It save to itself! It's portable! There must be some way to build a keyboard that, once you turn it on, saves whatever inputs are typed to a plain text file on a thumb drive or SD card. Ideally, there'd be an on-off switch. When it's on, it's "recording" all inputs. Then you simply pull out the storage unit, plug that into a computer, and have your raw text. Any thoughts on how to pursue creating something like this?

Topic by TolkienCartographer   |  last reply


Replace sounds on greeting card sound module

Hello, I recently purchased this item from ebay. It's a "30s Light Sensor Record Device Module Music Box Sound Chip For Greeting Card" It comes with a pre-recorded happy birthday song. Now I want to change that song and I am pretty sure it can be done somehow, because I can see some connections available, except I am not sure what they mean and how to use them. The seller responded that there is no documentation and if I want certain sounds I have to send them the files and they will record them for me before shipping... which is ridiculous... I want to be able to change the songs when I please. The connections marked on the board say: TG1 TG2 TG3 GND VDD PW1 and PW2 Any suggestion could help.

Topic by danielpreda   |  last reply


Where can I find good 18650 cells?

I want to build a custom Li-Ion pack using the 18650 cells. But, when I go to look some up online, all that really turns up are the knockoff brands in which they claim a stupidly crazy high mAh rating. So.... where can I get some good cells?

Topic by Dashing Rainbow Dash   |  last reply


Bell Ringing (or Light Flashing) Circuit

There's a dead simple circuit which I've built before, but can neither remember, nor find online. Just a capacitor, relay, and a few resistors to make a circuit which flashes on + off. Can anyone here find this, or re-recreate it?

Topic by Toga_Dan   |  last reply


Tiny Programable board for 2 LEDs?

Greetings, I'm looking for advice on how to make and get and effect on a project I'm working on. Basically what I'm wanting is to have 2 LEDs (which will be a set of eyes) that will have random sequences of blinking and change at random intervals. Something that isnt constant and overly repetitive, more natural and subtle. I've never done something like this to this level quite before so I'm looking for something intuitive and simple if possible. The space I have to work in is extremely small too, like less then 2 inches squared. It also needs to be run by battery, however that part doesn't have to be within the small space if need be, although it would be preferred. Would raspberry Pi, work/be a good option? I've NEVER used it before. I've also heard about "Arduino". Would that possible work? Are their better options/suggestions? I really dont know what I'm doing here. Hhahaha Thanks -JXZ

Topic by JXZ   |  last reply


Advice on Autonomous, Helping-Hand Robot Project?!

We are a team of engineers looking to develop an open-source, versatile robotic arm to be used by the maker community. We envisioned a modular, interactive arm that could be programmed to perform a variety of tasks. What sort of projects would you use a product like this for? What requirements should the project adhere to, including cost, size, payload etc. Thanks for the feedback!

Topic by AlissaJ1   |  last reply


Smiley with leds

Hi, I want to create a simple toy for children that can respond to a child's actions. I want the toy to look like a character with emotions : it can be happy, sad, etc.. I'm looking for a way to show the emotions through the 3D printed shell. I like the way the object in the picture does that. I was wondering if they use leds or lcd screen or anything else. Do you have any idea ?  Thanks Catherine

Topic by Catherine Dupont   |  last reply


graphic display on lcd

Hello I used a processing sketch that shows a graphic form of information recieved from a pulse sensor. I would like to take that information and display it on an lcd screen. I don't know how to take that data and send it out of processing and into the lcd, so I could really use some help! thanks

Topic by Noaber   |  last reply


teeny tiny circuit to make led fade in and out.

Good morning. long time lurker, first time poster. i am working on a small project and thought this would be the best place to ask. i need to come up with a teeny tiny circuit that when power is applied will fade in an led (over 1sec), and then when power is removed will fade back out (1sec). it doesnt have to be exactly 1 sec, but somewhere in that ballpark. the space i have to work with is only 21.91mm X 6.02mm X 19.4mm, and id like to also be able to add a small switch in there too so i can disable the led when its not needed. input voltage is 12v and i need 5.5v out, 6v max. any ideas are welcome. i have found a few circuits on here already, but most are way to big to fit into the tiny space i have to work with.

Topic by RelikL   |  last reply


A Hybrid of Coil and Rail gun

So I said i'd throw this up in the comments section on Youtube not too long ago, and I don't like it when something easy and free doesn't happen. This is some ideas and observations that have to do with coil guns (mostly). I'm in the process of finishing up several projects, so my resources are kinda spread out. I should have a prototyped coil gun finished in 2-3 weeks though, so if this doesn't clear things up, hopefully that video will. I should point out, I am a chemist with expertise in biochemistry, not electrical engineering. Basically my idea is to combine a railgun and a coil gun for the expressed purpose of avoiding the pitfalls that a pure coilgun or a pure rail gun have. At present, none of the designs out there would be capable of competing with an actual gun. By mixing the two, i'm hoping to get something that might eventually be capable of doing so. So.. I've included a very poor drawing (I'm not an artist). The barebones circuit is sketched in the lower right hand corner. The gun barrel, which is a piece of aluminum tubing split into two pieces to sever as a rail system, is sketched in the upper left, and again in the middle figure to show how to integrate the coil and rail system. Looking at the circuit design, you can see that this starts off as a very basic capacitor-inductor circuit. The charge is purposefully allowed to trickle through the circuit until the coil reaches saturation and the capacitor(s) are charged. When the trigger is pushed, the inductor side of the circuit has to dump into the rail system to complete the full closed loop. Because of the ferromagnetic material (the brown stuff), the magnetic force persists for a while (that is to say, it has high reluctance). The ferromagnetic material does one other thing that is important here. It forces the middle of the coil to be far off center. The coil is pulling the projectile into the middle of the magnetic field, but that is not necessarily in the center of the winding. Adding ferrite, or other high reluctance material, towards the end of the barrel biases the field towards that end.  At the same time that the coil stops getting current, the rail system become active. This allows a charge to pass through the bullet/projectile, and, even though the majority of the force is going to be caused by the inductive coil, the rail system allows an eddy current to setup in the bullet. This does several things. First the bullet doesn't have to be iron, nickel, or cobalt. With a stray eddy current in the projectile, any conductive material will work. The advantage here is that once the current stops, the non-magnetic material stops being  to the magnetic field, preventing backwards acceleration of the projectile as it exits the barrel.  Second, Rail systems and coil systems are not often used because they are perpendicular to one another, but, this can be used to put spin on the projectile, in a similar manner to rifling in a barrel.  After the projectile is fired, the circuit is open, preventing excessive electrical discharge.  My circuit design is really badly drawn... =T if it needs more explanation please post up questions. 

Topic by Qcks   |  last reply


Modifying a Singing Greeting Card

A while ago my wife got one of those singing Hallmark greeting cards. (This particular one played the Law and Order theme song) Well after a while it no longer played the song. I opened it up and found that there is a circuit board inside with a 3v button cell battery attached to it. I removed the board and the speaker and the battery and I'm pretty sure that I could attach wires to the two contact points and connect them to batteries that would complete the circuit and allow the theme song to play again. What I want to know is if I need to take any special consideration when putting in a new battery(s). I was going to try to just put two AA batteries in series (1.5v +1.5v =3v, right?) but I don't actually know anything about electronics and so I wanted to ask here if there were any resistors needed or if there were any differences between the button cell and the AA batteries that would require me to do something different.While we're on the topic of these cards I just thought of a neat project. Design some sort of holder for the circuit boards that would allow them to act as sort of an interchangeable cartridge. Basically detach the speaker wires and battery contacts from various boards out of various cards and design some sort of holder with contacts for the speaker and power source at the appropriate points and be able to change out the different boards. Not really practical but sounds like fun.I just thought of yet another question!Would there be anyway to hook the board up to some sort of audio cable (in place of the speaker maybe) so that I could plug these into a computer and record the song off of the board in a digital format. (Again not very practical but sounds like fun.)Anyway, this is my first post here and I'm sorry if it's a bit jumbled but I don't have a very organized mind and sometimes it's hard to put my ideas down in a succinct manner. I tend to just ramble on incessantly in a train of thought sort of manner until I think that I've said what I think I wanted to say. In closing, I like this site and plan to be around for a while and learn as much as I can. If somebody would like to help me with these ideas/projects I would be happy to provide pictures of the circuit board and pieces that I have if it's necessary.Thanks.~JoshI'm using two AA batteries. I have a wire between the positive side of B1 and the negative side of B2 and wires coming off the open ends. I tried connecting the batteries from the spot where the negative side of the button cell was to the silver rectangle thinking that that would complete the circuit and make music. That didn't work. Then I noticed that the positive connection for the circuit was actually where the clip that secured the battery was before I removed it and that the positive and negative sides of the battery were going through a capacitor before touching the final contact. so I tried placing the positive wire up on the positive contact and then placing a wire from the positive contact to the final contact but that also didn't work. I don't have any solder and have been using electrical tape to secure the wires. The wires are a fairly thin (I don't know the gauge) stranded copper. I'm not sure if the wires aren't making good contact or if I'm just doing something wrong.

Topic by MrKltpzyxm   |  last reply


Gameboy Color MP3 Player!!!!Ga

I have a request. I have attempted to make a "Gameboy SP" with a gameboy color and an altoids tin. Accidentally snapping the thing in half, i have given up on the project after hours of trying to make my own bit that'll fit those darned screws (i've succeeded and plan on making an instructable about it sometime in the future) and i finally got it opened. then i destroyed it. I noticed that the thing has the potential of becoming an awesome mp3 player because it has the headphone hole, a button for select, and whatever you need! Maybe someone could use an old ipod mini for the project because i've got one that i broke too. Anyway. To summarize, i would like someone to make a Gameboy Color Mp3 player becuase that would be extremely awesome and would make me happy becuase i have a broken gameboy with nothing to do now. Below is a picture of how i feel.

Topic by alvincredible   |  last reply


Easy spray/liquid *open cell* foam?

Hi all - new here  :)  I was trying to think of where I could ask this and I immediately thought of instructables.  Does anyone have any ideas where I could find a spray or liquid *open cell* foam?  It's easy to find cans of spray closed-cell foam these days, but I've never seen one for open cell foam.  I've done a lot of searching, and the only open foam cell solutions I find tend to be giant expensive things for insulating houses in bulk, nothing for small scale applications.  I'm looking to fill a bundle of relatively fine tubes (diameter TBD), which I want to act as a sponge on the inside, resisting allowing the liquid inside to drain out while still allowing for gas migration.  Hence closed cell is not an option.  Polyurethane is probably fine, although other materials may well be fine as well. Any ideas?

Topic by KarenP139   |  last reply


Diy Spot Welder

Hello, this is my first post here at Instructables. I will get straight to the point. I plan to build a diy spot welder. However, in most of the diy spot welder projects I have looked at, including Hack a Day and Instructables, a MOT (Microwave Oven Transformer) is used. The secondary is rewound with thicker wire, and the transformer is used to step down voltage and step up current. I have heard that these transformers can supply as much as a kiloamp at very low voltages. However, I do not own a MOT, they are too costly to buy, and I do not want to retrieve one from a microwave because- A) Nobody happens to be throwing away a microwave in my area. B)The guys who own the scrap metal and thrown away appliances will only give me a microwave oven at a hefty price. C)I would prefer to live a very long life, and do not want to gt myself electrocuted poking around the innards of a microwave. SO, I did a thorough search, and found that some people made a welder from a stereo amp transformer. Again, I did not own one, but what I did own was an ultrasound generator that was supposed to drive away rats. After making  bloody inroads into it`s innards, I found a transformer quite a bit larger than the regular step downs. It is 5 cm long, 4 cm wide and 1.7 cm tall.  Input voltage is 220 volt AC from the mains, at 60 hertz. Output is 12 volt AC at a maximum of 300 MA. Speaking from experience would anybody please tell me whether this is suitable for a spot welder? Please ask me for additional information, including pictures, if required. Thank you.

Topic by TheLightningConductor   |  last reply


Original idea to ask her dad

Hi there, My name is Nicolas, I'm french and i'm asking for the help of the community. Me and my girlfriend are thinking to get married soon and I wanted to find an original way to ask her dad for his permission. The thing is that her parents live in Washington and I'm not able to go there. I was thinking of sending something or make something virtual (i'm a software engieneer).  Moreover her father is not a real techy guy but rather a tech enthousiast. So I search something around the tech theme. So here is my question, do you have any orignal idea with this tech direction in mind that i can produce to ask her father. Sorry for my bad english. If something is unclear, please ask for mor explanation. Best regards, Nicolas

Topic by NicolasP38   |  last reply


PC to Mobile Workstation Advice

I recently made a old antiquated PC I owned into a mobile work space/storage. Sadly I thought I wasn't living up to it potential, so I decided to ask the always helpful instructables community for help. I am looking for any idea that improves the look, functionality, storage, of efficiency of the workstation. (But mostly the first two) Box Current Specs. 1.5-12V power supply, cant be removed. See picture 1, its the box behind the two probes. Lots of space, Im not afraid to tear anything out of the box to make room for something better. Honestly Its pretty crappy at the moment with just some plastic board shelves holding supplies. I will take any ideas, I would love for this box to become a great instructables project. Pictures,  Picture 1 is current box, again not afraid to change it. Picture 2 is raw space, (minus shelving) keep in mind the power supply case could also rig sliding drawers.

Topic by JosephR107   |  last reply


Choosing drive motors for kids riding toy

I'm building  "robot horse" for my daughter, and have the metal frame mostly complete.  The plan for locomotion is to mount reversible powered 6" wheels to the outside of each hoof, and steer tank-style. My biggest challenge is finding reasonably priced, reasonably powerful drive motors for each wheel.  My issues are  1)  I'm inexperienced at specing dc motors.       A) I'm not real sure how to translate published specs into real world motion.  I don't know exactly how much power it takes to get this reliably moving over rough ground to a top speed of around 1 mph.  I also don't have a good sense of much voltage you can pump into a DC motors.  (IOW, should I be able to push 2 x the rated voltage for a quarter second to get it moving? Will the motors naturally increase their amperage at a constant voltage (and thus power) as they are resisted by torque?)  How much power will starting from a stop take?  What about a slight uphill slope?     B)  I'm not sure what form-factor is best:  Gear motor?  Gear motor with final drive belt?  I would like to use worm-gear motors, as I think it would be safest if the wheels didn't move when unpowered. 2)  Hunting around supplier web-sites, I see lots of $20ish gear motors that use 5-20W of power.  Great price, but would 4 of them make enough power?  (See #1A above)  Also, I see lots of fractional HP motors for >$100 that would unquestionably be strong enough, but would cost more than the project justifies.  I found very little in between.  Are there motors and gear boxes that could power this at a reasonable price?   Relevant clarifications and details: 1)  The horse is about 40" high at it's withers (shoulder) 2)  Frame is made of 1/2" square tube steel. 3)  Normal rider + vehicle will be about 150 lbs.  However, unquestionably, larger kids (or multiple small kids) will at some point hop on it and try to ride it.  At 250 lbs. rider+vehicle weight it doesn't have to go fast, but shouldn't burn up the motors. 4)  It'll be powered by a lipo battery pack that shouldn't have any issues with 20A+ max currents and can be sized as needed for voltage. 5)  I'd like to keep the motors and gears <$200 total, if possible. 6)  "Rough ground" = flat grassy turf or reasonably smooth gravel. 7)  Motors need to be reversible. Can anyone lend some perspective on what type of motors to buy for this?  How much power/torque should I look for?  Any advantages/disadvantages of any particular gearing style for this application? I am assuming that motors on each wheel are the way to go, but if there are any other power transmission schemes that would work better, I'm all ears.

Topic by SvdSinner   |  last reply


Wireless Doorbell - Chime from Phone

Is there a way of modifying a wireless doorbell, so i can make it chime from my phone..?

Topic by BradSabbath   |  last reply


Do Laptops have a "Power On" signal?

I was thinking of trying a project in which I do a custom watercooling setup on a gaming laptop of some kind. I would like the loop to power on and off with the laptop itself, but I don't want to use USB power or something like. That made me wonder if laptops have a power on signal, like desktop psu's have. Do they have it or something similar to a power on signal?

Topic by Dashing Rainbow Dash   |  last reply


arduino wifi time-lapse camera

Hello everyone, I am trying to build a cheap arduino controlled time-lapse camera system. parts I chose so far are; camera; OV7670 wifi; ESP8266 board; nano here is an amazing instructable on how to use the wifi module; WiFi temp logger. Unfortunately I can't find a simple and well written instructions on how to connect the camera module mentioned above. I don't need to save the file on the board, I just need it uploaded to a web page, cloud etc. the picture will be taken 2 times a day with 10hr delay in between (one morning, one afternoon). here is the closest example I can find on instructables to what I want to accomplish, although this is over bluetooth and a different camera module. 1. arduino time-lapse camera 2. image capturing bird feeder thank you for your help. this is very important for me, I am very new in the field and don't have much experience. I am sure many other people will find such an instructable useful as these modules are extremely cheap. . love & peace akin,

Topic by Akin Yildiz   |  last reply


SMall LCD screen help

I have managed to get my hands on a Hitachi LCD module. Its a thin flat colour screen. Viewing area is 242x69mm and has a resolution of 320x240. Its model number is LMG9520RPCC-A. I have 2 data sheets for it but unfortunately no power or interface cables. I was wondering if anyone has any suggestions on how I can use this? I have called Hitachi and am awaiting a response on to what cables I need and how to get them. But in case I cant get them has anyone any ideas on how Id put it to use? I was thinking of making a digital photo frame but...what sort of video feed will it accept? What pins do I connect to? Any geniuses out there who know a thing or 2 about screens?

Topic by midvale99   |  last reply


Digital Camera with ISO, shutter speed & aperture settings

Hi, i would like to make a very flat digital camera with the possibility to change the 3 principals settings : ISO, shutter speed and aperture. I would like to change those settings with a potentiometer so by rotation or with a sliding linear spot.   First question of i use a a mobile/iPhone camera  is it possible to adjust those 3 settings electronically ? If yes what do i need to make one ? Thank you. Thomas.

Topic by ThomasDsgn   |  last reply


Custom Power Supply for Lemax Products

Curious if it would be possible to make a custom power supply for the Lemax Halloween town.  We end up with a tangle of wires every year, and I saw recently This on Amazon and thought it might work.  The only problem I run into is that the bigger Lemax products (houses and spot lights) use 4.5v where as the smaller figurines use 3v.  I've seen a lot of computer PSUs used for benchtop power supplies but none have a 3v or a 4.5v output.  I'm fairly competent with electronics, so I understand this might be more difficult than it's worth.  

Topic by cyranohadden   |  last reply


Connecting up a bunch of 1W LEDs

Yet another LED question I'm afraid.... I've have a bunch of 30 cheap 1W LEDs from eBay and plan to use them in my kitchen for under-cabinet lighting. Forward voltage on the LEDs is 3-3.5V, max current 300mA. I'm trying to figure out how best to power them. I have an old laptop power supply that provides 12V and up to 3A - that would give me up to 36W, enough to power the 30 x 1W LEDs. If I created multiple rings of 4 LEDs in series (giving a 3V drop across each), then connected each of these rings in parallel would that work? Or should I say, would that be a good way of doing things? When dealing with much lower power LEDs (the typical 30mA or so type), I would usually put a resistor in front of each, but it seems that in the case of 1W LEDs I could end up losing a lot of energy across a resistor (and fry it in the process).

Topic by kermin   |  last reply


Arduino code help

Hey guys, So Im by no means good at coding. I can work with electronics, but the coding part of arduino is beyond me. I normally work with libraries that others have already created.  Im just wondering, is there anyway someone could help me write an arduino sketch for a personal project? Im using a arduino nano and a strip of 22 ws2812b led strips seen in my last instructable; https://www.instructables.com/id/DIY-Bike-LED-Lights/ I worked around the neopixal library until I got the rainbow cycle effect seen here (Not my video) https://www.youtube.com/watch?v=qUL7x_0r-bA Im just wondering if its possible to make the rainbow cycle code run between 3 different colors such as red green and yellow or red white and blue. here is my current code #include #ifdef __AVR__   #include #endif #define PIN 6 // Parameter 1 = number of pixels in strip // Parameter 2 = Arduino pin number (most are valid) // Parameter 3 = pixel type flags, add together as needed: //   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) //   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) //   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products) //   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) //   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products) Adafruit_NeoPixel strip = Adafruit_NeoPixel(PUT THE NUMBER OF LED's HERE, PIN, NEO_GRB + NEO_KHZ800); // IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input // and minimize distance between Arduino and first pixel.  Avoid connecting // on a live circuit...if you must, connect GND first. void setup() {   strip.begin();   strip.show(); // Initialize all pixels to 'off'   // Some example procedures showing how to display to the pixels: } void loop() {   rainbowCycle(20); } // Slightly different, this makes the rainbow equally distributed throughout void rainbowCycle(uint8_t wait) {   uint16_t i, j;   for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel     for(i=0; i< strip.numPixels(); i++) {       strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));     }     strip.show();     delay(wait);   } } // Input a value 0 to 255 to get a color value. // The colours are a transition r - g - b - back to r. uint32_t Wheel(byte WheelPos) {   WheelPos = 255 - WheelPos;   if(WheelPos < 85) {     return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);   }   if(WheelPos < 170) {     WheelPos -= 85;     return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);   }   WheelPos -= 170;   return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); } Please let me know or if you can help ill take any advice Thanks!

Topic by Constructed   |  last reply


Digital photo frame

I want to make a digital photo frame with the ability to dictate the length of time each photo is shown and the ability to type words describing the photo that can be triggered by use of a touchscreen.  Any ideas would be greatly appreciated.

Topic by lacuerda1   |  last reply


Audio - headphones

My daughter runs a Pre-school and uses a small cd stereo setup. The output is a pair of mono jacks (R/L) for speakers. I am looking to build a distribution box for up to 6 headphones. Thinking of one input (from the speaker jacks using a 2 to 1 plug) The headphones are mono 1/4 so those jacks are readily available. I do not know what the output is of the stereo system is but I doubt it is much over 5 watts (if that). Will I need some sort of amplifier? any thoughts on switches/switching jacks if not all are being used. Thanks for listening. guitar 52

Topic by guitar 52   |  last reply


Problem with camera module

Hey guys, recently i brought a brushed motor quadcopter which came with a mini recording camera, i would like to connect it to my TS5823 32CH 200mW Video transmitter, but the camera don't have any wire that i can directly connect to my VTX, do anyone have any idea / schematic on how to connect the camera to my VTX ? Thanks a lot.

Topic by Sooncheng   |  last reply


12v Portable Led lighting Help

I really need some help trying to power these led lights onto a portable table Im building.I need the power supply to be as small as possible. I honestly have no idea what Im doing except that i need a 12v power supply.I work on cars and custom put in leds all the time but the power supply always comes from main car battery.I have never tried to power them before from a small battery like AAs before for example. If anyone has any ideas please respond because I can not finish this project until I get the lights to work and I don't want to go wasting money buying stuff in the wrong places. I will also include a link to the ebay page where I bought the lights. Another thing is I have done research and cant find what the amps they draw are.  

Topic by godfather29