Speakers in wall

Anyone tried to put, in wall speakers, in wooden boxes? I know in wall speakers are build for wall but how they are going to sound in regular wooden boxes. I got, very cheap, high end in wall speakers. Why not build boxes and save $1000 ?   Any experience ?

Topic by mavava 


LED wall lighting?

I want to create a long wire tht i can just pin onto my wall with LEDs along that piece of wire. and just plug it directly into my wall but i have NO idea how to do implement this idea. im a comp sci student and i know nothing about electricity, helpppp

Topic by unix   |  last reply


Fixing a wall-wart?

Hi, I have a wall-wart that is working but I'm having some problems with it. It coverts 220AC to 10VDC with 1,3A current. I've been using it mainly to power up 8cm PC fans. Recently I opened it up and saw that below the diodes,board has turned black and it seems fried, that can be from excessive heat generated by diodes, and part of the transformer that was facing this diodes is melted (as you can see in pictures). I think diodes are 1n4005. 1- my first questions is, why these diodes got this hot ? should I change them with diodes that can pass more current?  I have RL205 will that work? 2- I've read somewhere that after rectifier bridge, if capacitor's capacity is high, it will put pressure on diodes and transformer, is this true ? or we can use any high capacitor we can find ? 3- Is there a law by which we figure out how high our capacitor should be after rectifier bridge in wall-warts ? for example If I had a wall-wart with 1000mF capacitor, can I change it to 2200mF ? 4- I am going to use this wall-wart to power up a 7805 regulator, so that I can feed a lithium-ion battery charger module (4056). This module uses 1A. should I put a high value capacitor like 470mF or more, at regulator's input, or is it unnecessary cause of my wall-wart having a high capacitor ? 5- Are they any ways that I can improve this wall-wart ? like if I keep the transformer cool ,when it;s under load ...maybe add another capacitor ... ?

Question by ehsan_zt   |  last reply


Multi Touchless Wall

How to make an interactive display I hope it's pretty clear, if you any doubt, feel free to ask .You can also check my site :http://sassexperience.org/projects.htmland visit the multi touch community : nuigroupnuigroup

Topic by jimihertz   |  last reply


USB wall socket

Does anyone know how I could make one of these? http://www.thinkgeek.com/product/e81a/

Question by mouseman357   |  last reply


Screen Panel Wall

Hi all, I would like to make a video panel that would take up a big portion of the wall in my house. I would like to output various visualization on to it, so it needs to be connected to a computer. Something similair to advertisment panels you see here and there; or store displays. What would be the cheapest way to achieve that? Any suggestions? Thanks!

Topic by AngriusCommius   |  last reply


Wall Wart question.....

I have an NCE cx12v500 direct plug in class 2 transformer in the form of a wall wart. I accepts the USA standard of 120 vAC in, at 60 Hz, and outputs 12 vdc @ 0.5 A. I thought this was the recharging unit for my portable drill, and so I plugged it in. After a few hours of charging, the drill moved but was sluggish. I unplugged it, and when I tested the output, it had dropped to around 1 - 1.3 vdc. I can't seem to find a way into the unit either (molded plastic) without sledge hammer or hacksaw usage coming to mind. Did I fry this one I think I did, but I am looking for a possible, no and solution from someone :-) Aaaargh ! I took it apart finally sawed a notch in it and pried it open... and there was #1: NO regulator *sigh*, and #2: NO fuse of ANY kind, and #3: just a tiny board with a 1,000 uF cap on it and 4 diodes (bridge configuration).....one by one I took components off and tested them with my VOMM and sure enough, all the components were good. Then I tested the transformer......and both sides should have tested closed or short, but one side (output) tested OPEN. *sigh* It fried the transformer ! :-(

Topic by Goodhart   |  last reply


Wall of case fans?

Hey guys, I have been thinking up ideas all night for wind power. I've been messing around with a decent dc motor I found in a printer, but I'll have to wait till tommorow to make some kind of proper blades for it. I however, have an interesting idea. I was thinking of using just one case fan by itself to generate power (see video below). But then I got to thinking, what if I made a wall of case fans in my back yard? and wired them all up in parallel or something. I measured the output of one case fan I have here and at most I could get was 0.100v DC turning it by hand as fast as I could. I come along so many case fans and throw them out all the time, so why not re-use them?? I'm not sure winter time would be the best time to put something like that out, but I think it would work.

Topic by Punkguyta   |  last reply


Wall wart for digital camera

Hi everyone, I have a cheapo digital camera, a Norcent DC-1020. I've been trying so hard to figure out what kind of wall wart I need for it. It's rated at 3.3V and 2A, but here's what's confusing me, at the input it says "DCIN3.3V," which makes me think it needs a DC wall wart, but the sticker on the bottom says "3.3V [symbol] 2.0A max" where the symbol is two lines, one solid, one dashed. I thought that symbol was for AC?

Topic by burger_bot   |  last reply


Wall outlet current draw

I have built a transformer, that will take 120v, and step it down to 2.5v. I used all the right parts, and the correct rated wire for this. My only issue, is that when i connect the primary coil, to a call outlet, at 120v, it draws more current then my 5A fuse can handle, and the power goes out in my home. I need to get 1.5 amps, @120v going through my primary coil, in order to get the desired output on the secondary. I was wondering, how things "draw" current from the wall, as well as if i where to use a resistor, wouldn't it still draw too much amperage, and just dissipate it in heat, to give the desired output (i cannot use, because it draws more than 5 amps). i could not find a resistor out their, that could handle over 100 watts, so i was also wondering how things like vacuum cleaners only draw a small amount of current. Would i need some sort of current regulator (if that's even a thing)? if you had a light-bulb, and a battery, would the circuit the light-bulb is attached to drain less current, if their was a resistor, and thus having the battery last longer, or would it draw the same amount, and just dissipate energy through the resistor in the form of heat, to give the light-bulb its self less current?

Topic by merlinj   |  last reply


Wall of PC Case Fans?

Hello guys, sorry if this is the wrong section but, I was thinking of making a DIY fan out of PC case fans to keep myself cool in the summer. I've tried a number of fans in the past, but they don't seems to be very good. I usually put them right next to an open window to draw cold air in. I was thinking of making some kind of rig like in the video below, only without the bitcoin mining computer. I got the idea from this video and from when I was messing around with the fans in my own PC. I was chancing the speed of the fan for the PCI cards and noticed that it could get really cold if ramped up a bit. ) I was thinking of using 9 identical 120mm or 140mm fans, preferably ones that can be used with a fan controller. Here is a few of the things I need help with. How will I power the whole thing? What kind of cabled will I need? Could I use a fan controller to power all 9 fans? Can I even hook up 9 fans to a fan controller? Maybe I could use 2 fan controllers or something? What brand of fans should I use? How will I attach the fans together? Cable ties like in the video? Maybe I could make a makeshift wooden stand to hold them upright.

Topic by BionicSammich   |  last reply


How to make a WALL-E robot?

I WANTED TO MAKE A WALL-E ROBOT USING A TV REMOTE BUT DON'T KNOW MUCH ABOUT IR AND THE TYPE OF MOTOR I SHOULD USE TO MAKE THIS ROBOT.PLEASE HELP ME!!

Question by RUDR   |  last reply



Fantastic Russian Wall-E case-mod

This is such a good build, it speaks for it's self.

Topic by lemonie   |  last reply


Backlighting Metal Wall Art

Does anyone know how to backlight metal silhouette wall art? https://www.instructables.com/answers/How-to-backlight-outdoor-metal-wall-art/ Thanks

Topic by silliou   |  last reply



Custom Minecraft Wall Torch

Hello all. This is my first time here so, I hope I can find the info I need. I've never used a soldering iron before and know little about wiring, but I'm eager to learn. I'm looking to customize an electronic Mainecraft wall torch that I have, with a flickering light. However, I wanted to come here first to see if anyone has opened one of these up before. I was planing on using a flickering light from one of those electric candles. I'm not sure if it's as simple as switching out the LED or if I have to rip more parts from the candle. I appreciate any help you can give. Thanks

Topic by OX_Bigly   |  last reply


Running LED's with a wall outlet

I have a question, I am thinking of making a Pepakura Iron Man mask for my father for his desk at work.  I have big plans for this, but the biggest thing I want to do is had the Eyes light up.  What all would i need to do this?  I would think using LED's would be the ideal way to go.  I dont really want to use batteries to power it, as I would like it to run off of a wall plug, and perhaps even have a switch to power on and off. Any ideas?  I've looked all over, and I cant really find a deffinate way/means to power it through an outlet....most all just mention batteries.  I know it can be done though :) Any help is GREATLY appreciated!

Topic by electrobrandino   |  last reply


L.E.D. Wall clock idea

I saw this clock design the other day. It was a circle with the clock hands in the middle and unattacked to the clock there were dots around it to mark the hours. I want to improve this design by making the hour dots light up on their respective time for the whole hour. Maybe make them have a nice dimming transicion between the hour switch at the last second. I don't know much about programming L.E.D.s or what hardware I would need. Can somebody help me how to make this project?

Topic by rabril 


Motion Sensor to Control both Bathroom Light and Fan?

My bathroom currently has two single pole switches mounted in two separate wall boxes side by side with a single double-wide switch cover.  I want to convert these to motion sensor switches with separate vacancy delays for the light and fan so that I can let the exhaust fan run for about 5 minutes after vacancy while the light is set for maybe 30 seconds. Are there commercial switches that will accommodate these two functions in a single switch, or will i need to use a separate switch for the light and one for the fan?  Are there single double-wide wall plate covers that will fit side by side switch placement? Thanks.

Question by ValR14   |  last reply


how to build a x-ray view box?

I would like to build a x-ray view box. I think it is similar to a light box for photography.

Question by drstephob   |  last reply


how would i make a light sequence?

Hello, I hope this is the right place to post......i wasn't sure so im sorry if its not. I've new to the site and also very new to making things.........me and my dad ain't that close sadly but i want to try and resolve that with a summer project to bond....so i though we could make a Wall-e USB hub. we have worked out to to hook all the USB and fans up but i want to make it a little cooler but adding a LED display to it so that it looks like its charging when its plugged in. basically what i want to happen is.....when i plug the main USB cable into my computer there is a sequence of LED's that turn on one after the over followed a sound. like this.... http://www.youtube.com/watch?v=HeYdxX3ddqM as i dont know anything really about circuits or even how to get the sound to happen at the end i was hoping that there might be someone on here that would be able to help me out. Thanks in advance.

Question by MonkeyBoy191   |  last reply


wall wart/transformer instead of batteries?

I have recently purchased a creative HQ-2300D and it only accepts two AA batteries for powering the decoder, there is no DC in on it. Can I use a wall adapter to power it? (it really eats batteries)The intended transformer.nokia charger, output is 3.7v = / 355mAhThe reason I am wanting to use a transformer with it, is it would make it a lot easier as it is only used for gaming on the xbox 360 (to get the dolby headphone from the decoder) so it is never used "on the go" so changing the batteries/ recharging them is a mild annoyance I wouldn't have from a transformer turned on when I use the 360. It can't be as simple as wiring pos to pos and neg to neg on the battery terminals inside the decoder with the nokia charger because there is only a slight variation in the voltage.....can it?. I am also concerned about whether the transformer is regulated or not, reversing polarity, correct polarity etc. etc. and what else is important not important when attempting to do such a thing, so as not to destroy my decoder. (I did this before with a minidisc player and a Universal adapter on the wrong voltage, I didn't impress myself..........doh.... anyone smell that....)I tried plugging the nokia charger into another 3v device (an old sony tape deck) that has a 3v DC in, and it didn't seem to give it enough power to turn the tape, but when I plugged in a universal adapter and set it to 3v it worked fine.My idea is to remove the fem connector from the phone and rig it so it can be plugged into one of the battery terminals and the nokia tranny can be plugged into it, but it can still be removed for when I want to use batteries.I put it to all those with the knowledge who can explain in lay-mans terms and educate me on the best, safest, cleanest way to solve my dilemma.Thanks.

Topic by py3m4n   |  last reply



power hack

Aside from it being an ugly hack, is there any reason I can't strip the wire back from the end of a printer power cable and solder it to the plug terminals of a 5v wall wart transformer? This shouldn't be a fire hazard since the power cord should be rated correctly, correct?

Topic by randofo   |  last reply


rgb led video panel

Hi i am trying to fine some one who can help me i am trying to make a video panel from tri color matrix tiles i need it to work with a composite video feed i have a processes to do the matrix of the wall i just need to make 1m x 1m panel and then i am away if you have any ideals i would love to hear them thanks for your time justin

Topic by vidscreen123   |  last reply


How do I wire these LEDs?

I'm need to wire 4 blue LEDs (3.4v) and 2 ultra bright red LEDs (1.9v), I would like to limit the current to 10ma and wire all the LEDs to a single wallwart. The wallwart I was planning on using is 12v DC 100ma. I'm pretty new to LEDs so I'm not quite sure how to do this, I was thinking about wiring the 2 reds and 1 blue in series and wiring the other 3 blues together in series and then wiring the 2 sets together in parallel. But I'm not sure if that will work because I read somewhere that if you're wiring in parallel all the LEDs must have the same voltage. So if anyone could explain how I could wire this up (and maybe even draw up a simple diagram) that would be great.

Topic by cannedham160   |  last reply



Large LED WALL (Updated Name needed)

Hello, Im not even sure if this is the right place for this post. I wanna build a LARGE LED WALL. Basically rows and columns of leds which i can progam to do what i want, be it scrolling lines, words, snowflakes etc. Perhaps even colour changing LED's to produce a large picture. Can this be done?  (either one colour or multicolour) Where do i start if yes! Any ideas welcomed

Topic by dirty-monkee   |  last reply


are all usb wall adapters the same? Answered

My brother gave me his old iphone .i already had a cell so i just use the iphone like an ipod touch  .the only cable he gave me with the iphone was the one to connect it to the computer  .my problem is that im going to be without my computer for a while and i need to know if i need to buy a new usb wall adapter or if the one i that came with my digital camera would work   .in other words  .do all usb wall adapters have the same output as far as polarity, voltage, and wattage and so forth .or  would i fry my iphone if i plugged it into a usb adapter thats not made specifically for it?

Question by somebullcrap   |  last reply


How to lower wall outlet power?

Hi, I need a circuit to change the AC 240v (UK) into 5v 1A, What is the SMALLEST possible way to do this. I know I could use an adaptor but it there a smaller circuit that could be done?

Question by versos-tk   |  last reply


Kid climbs walls with vacuum cleaners

A boy in the UK uses a couple of vacuum cleaners to climb walls like Spiderman. It's an amazing thing for a 13 year-old to do and... wait a second. This is just a copy of something that was demonstrated on TV in the UK well before this. So let's start over. A boy in the UK shows that you can get some media attention for doing a recreation of something that's already been established as amazing, even in the same country. Pretty shameless. Spiderlad via Inhabitat

Topic by fungus amungus   |  last reply


how do I reduce the voltage from a wall socket (220V) to something less? Answered

I need to reanimate the indoor body of an air conditioning system. right now it just has two wires sticking out for the fans inside. the problem is that when i plug it in the wall socket, it goes on full blast, which is undesirable. it's missing all of it's electronics. it's just the fans and the empty freon pipes inside. how do I reduce the voltage so it doesn't blow so mercilessly?

Question by VALKIR   |  last reply


Wall charger for rechargeable batteries HELP!

Hi, I'm trying to figure out how to recharge these BATTERIES without having them blow up in my face. I'm very new to making my own electronics and a little timid when it comes to messing with batteries. I believe i need to use this DC jack connector? With this CHARGER? I'm using the battery to power 21 LEDS wired in parallel with resistors (3.4v 20mA) if relevant. I think i need to wire it up like in the picture. I guess my question is if i wire all these things together and try to charge the battery will it destroy something? Also if i wired two of these batteries in parallel can I still charge it the same way? How do i know i'm using the right DC jack connector and charger? Is there a specific switch i need to use? Any help would be greatly appreciated!!! Thanks!

Topic by kasmir   |  last reply


Power a cordless tool with a wall socket?

I have been experimenting with multiple scrounged mostly computer transformers and wiring them into the battery packs. Most of them work for a while then they quit. They can add a quick charge to bad batteries and I can use the tool directly while plugged in but once the transformer goes the battery soon runs down. I am using 18 and 19.2 volt tools and am wondering what voltage and amperage transformer would work or is this just a fatally flawed set up? I have no electrical background and my main motivation for this project is to give new life and function to otherwise wasted equipment. I would also like to see these unused tools possibly made available to those in less fortunate areas who could use the tools either from an AC conversion or to run from a 12 volt car battery which is common world wide. Thanks for any input

Question by footzapper   |  last reply


Powering multiple devices with different voltage using one wall wart.

I really hate to post such a remedial question here but after searching the better part of the entire weekend for an answer I'm not much further along than I was at the start. I even went as far as hauling my butt to the radio shack to ask them.... I don't know what I was thinking there... It's always been obvious to me the guys there don't know much more than how to push cell phones - not to say they are all like that but the one by me has never been any help in terms of electronics. Anyway, I want to power a 5mw (3 volt) laser and one PC cooling fan (9 volt?) from one spare 12v wall wart. I've never been much for electronics but I'm thinking I can run the power to a breadboard, then run 2 seperate feeds through various resistors and/or regulators... just can't get any straight answers as to the best approach for this.... what's the best way to cut the voltage to a safe level for each device. I'd be happy with a good instructable for something like this if someone can point me toward one. Thanks for your help!

Topic by feign3   |  last reply


Is electroadhesion possible to achieve as a diy project?

I want to build a robot that can climb walls. It needs to move quietly because I want to use it for surveillance. I need to figure out how I will get it to stick to a smooth wall. I don't wanna use suctions cups cause I think they would be too noisy. Would eletroadhesion(see link below) be possible for me to do as a diy project? If you have any other ideas for how I can get my robot to stick to a wall, that would be awesome. http://deviceguru.com/robot-climbs-walls-electrostatically/

Topic by mastr924   |  last reply


I NEED ADVISES

Hi guys i need some advises from you to build an arduino wall e robot. i dont know where to start or which components i needed. Please help me with your advises to build this robot with arduino.

Question by makesomeso   |  last reply


How do you trace electric wires in a wall, without tearing the wall apart?

I have a wall switch that I can't figure out what it is to. I have taken the front plate off and the switch works. There is electricity on the wires leading out of the box when the switch is on. Is there a way to trace the wires through the wall?

Question by Juliusredwings   |  last reply



Is there a way to make an air compressor that plugs into the wall run off of alkaline batteries? Answered

Is there a way to make an air compressor that plugs into the wall run off of alkaline batteries?

Question by CapnTac   |  last reply


Running LEDs?

Quick question, really. Anyone know if it's possible to run LEDs in series straight off of wall current?  For instance, lets say I have 60 2v LEDs connected in series. Could I just put 120 VAC into them (with the proper resistor of course) and they'd light up with no problem?

Question by tylervitale   |  last reply


Need some help with a parts list for a RGB array.?

Im saving up money to build a wall of 512 RGB LED's from a site called solderlab, and they provide real good documentation, and pics, but im still confused on what I need EXACTLY for the PCB boards. There will be 8 with shift registers, and one for power. I will link pictures to the schematics, renders of the boards. And Ive got some, I think. Also where I can get the custom PCB's made, and or, how much they will be! :D  Heres the Power board:  http://www.solderlab.de/images/led-projects/modular-plasma-wall/Mainboard_PCB.png Render of the Power board:  http://www.solderlab.de/images/led-projects/modular-plasma-wall/Mainbord_Top_1.png One of the 8 Shift register boards: http://www.solderlab.de/images/led-projects/modular-plasma-wall/Segment_PCB.png And lastly, The render of The shift register boards: http://www.solderlab.de/images/led-projects/modular-plasma-wall/595_8x8_Top_1.png And as far as I can tell, I need: 36 RJ45 Jacks 32 Shift register 74HC595's base resistors 10k Conrad Electronics 64 npn-transitors BD139 Conrad Electronics 64 34 pin ribbon cable connector 3- 22p ceramic caps And they say ( but im not sure what or where to get them) Pull-Up / Pull-Down resistors 10k     x5 4 x pin header quarz 16MHz (Im assuming this is just a 16 mhz crystal. And two Electr. Caps 100 µF So what am I missing? and how do I make/get those little wire bridges? Thanks! :D Im excited.

Question by 'earl   |  last reply


Interactive floor using Microsoft Kinect? How?

Hi, I am searching for a solution on how to make an interactive floor projection. I saw some DIY projects using the Microsoft Kinect for detecting motion, but so far I have not found anything to start with. Does anyone managed to do something similar using the Kinect sensor?? Regards! vedtam

Topic by vedtam   |  last reply


Chandelier sunrise alarm integrated in wall switch

Hello guys I found some nice instructables here about making a sunrise alarm clock, like the Philips wake-up alarm. I was wondering if it is possible (and how :D) to male a circuit with an lcd (maybe by reusing some cheap alarm clock) and put it inside the wall switch which operates the lamp in the chandelier by slowly increasing the light and reaching the full bright when the time is set to wake up! That would be awesome! Thanks for helping, Sam.

Topic by samumar   |  last reply


How to backlight outdoor metal wall art? Answered

My friend is buying a piece of wall art (around 1.2m x .8m) which is an image of a bird (I have not seen it yet, but lets say it looked like the attached image, it is metal, flat. It is going to be hung outside and they would like it to be backlit, so it is visible at night.  They were quoted $130 for a perspex sheet with LED lighting, which seems steep to me, there should be a cheaper way to do it DIY. Any suggestions. Scott

Question by silliou   |  last reply


luminous flux vs intensity for wall lighting? Answered

Forgive me if this is an elementary question; I have very little understanding of optical physics.  Asusming that's even what this pertains to. Anyhow, I'm designing a music responsive LED display.  The gist of it is that the LEDs will be angled towards the wall slightly, with the intent being to use the wall as a sort of canvas for the light. I know flux somehow pertains to the general light emitted/spread, and intensity to the intensity at the point of emission. Unfortunately, my grasp pretty well ends there. As such, as I go to purchase LEDs, I'm unsure of which of the two is more important for my project (as it seems I can't have a maximum of both for my price range).  So my question is such:  Which factor (flux or intensity) will create a bolder impact in the context of visibly lighting the wall?  Keeping in mind that I don't intend or need to light the room itself, merely create the boldest display on the wall.  Thanks for helping a novice!  

Question by Skidion   |  last reply



It there a way to create an LED equalizer on the walls of my room?

Http://www.glowinwire.com/images/equalizer_large.gif  This is what I want to be on my wall(s). I don't care what the grid looks like but I rather not have the colors be rainbow. I want black grids with cyan bars reacting with the volume of the music. I don't know what the difference between volume and frequency is but I really want to make this happen. If you have a link to something I could buy or a kit I could buy to build something like this it would be MUCH  appreciated. I have never delved this far into technology before so try to use small words or allow me to look them up on Dictionary.com Thanks!

Question by nplato   |  last reply


Handy little wall projector? LED / Laser?

I have a need to be able to project simple information on a wall from a short to medium distance away, inexpensively. I thought I've seen something like this but couldn't find it on a recent Google search. Basically, it should be pocket (preferably keychain) sized, and be able to display a few lines of text clearly - enough for phone numbers, addresses, names, some medical info and instructions. This is for a relative who cannot communicate these things herself.

Question by Eli_Z   |  last reply