Backlighting a Keyboard

So a while back i purchased a keyboard that uses blue EL Wire to backlight the keys.  I like the blue, but i'd like to add some variety to it.  i'd like to add more different colors and a switch that toggles between the different colors (so i can change from blue to say red or green etc..) are there different voltages/currents for the wire that i should be concerned about? any other help/advice would be appreciated too.. thanks ahead of time!

Topic by ShadyMilkman0   |  last reply


lcd backlight? Answered

I have two broken lcd screen and salvaged only the backlight panel, power supply, and sreen display circuitry i it to light up all the time and not only 2 secs after you light it up without pluging any computer in the video ports. HOW? Thanks to all of you:)

Question by didgitalpunk   |  last reply


Backlight problems? Answered

The backlight on my computer monitor turns off 2 seconds after turning on the monitor.

Question by coolpizzadude   |  last reply


LCD loosing backlight.

My backlights fail only when I input a viveo source of any kind. If I power up in RGB with a composite video source pluged in its fine until I switch the source to composite(video1). this is true for any source. they include S-video, RGB, composite, VGA and tuner. its run on 12V, pretty much Identical to a computer monitor except more inputs. thinking maybe the inverter, any other ideas will be helpful???

Topic by mool   |  last reply


Problem with LCD backlight

Hello everybody,  I'm here to ask a question I'm not able to solve on my own. I'm not good at programming, so it may be a silly question, but I can't find a solution. I'm building an Arduino based humidity and temperature monitoring system, with three DHT-11 sensors and a display to show readings from them. I'd like to be able to toggle LCD's backlight on with a pushbutton and have the code switch it off after a while. I can't  figure out how to make Arduino do it. All I could make till now is Arduino switching backlight ON at the beginning of the code regardless of the buton being pressed or not.  Here is the code I wrote, I bolded the part relative to the pushbutton. Can anyone help me, please? #include "DHT.h"                    // include DHT sensor library code #include           // include lcd display library code LiquidCrystal lcd(12, 11, 5, 4, 3, 2);     // Initialize lcd on these pins #define DHTPIN A0          // sensor1 1 #define DHTPIN2 A1         // sensor 2 #define DHTPIN3 A2         // sensor 3 // Uncomment whatever sensor type you're using! #define DHTTYPE DHT11   // DHT 11 //#define DHTTYPE DHT22   // DHT 22  (AM2302) //#define DHTTYPE DHT21   // DHT 21 (AM2301) // Initialize DHT sensor for normal 16mhz Arduino DHT dht(DHTPIN, DHTTYPE); DHT dht2(DHTPIN2, DHTTYPE); DHT dht3(DHTPIN3, DHTTYPE); #define light_button 8 #define backlight_pin 13 int val; int state; void setup() {   Serial.begin(9600);   lcd.begin(16, 2); // set up the LCD's number of columns and rows:   dht.begin(); // enable DHT sensors   pinMode(light_button, INPUT);   pinMode(backlight_pin, OUTPUT);   state = 0; } void loop() {   val = digitalRead(light_button);     Serial.println(val);        if(light_button != state){       digitalWrite (backlight_pin, HIGH);     }     else {       digitalWrite (backlight_pin, LOW);     }         // READING SENSOR 1   // Reading temperature or humidity takes about 250 milliseconds!   // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)   float h1 = dht.readHumidity();   float t1 = dht.readTemperature(); // Read temperature as Celsius   float hi = dht.computeHeatIndex(t1, h1); // Compute heat index lcd.setCursor(5, 0);           // Print values from sensor 1 on lcd   lcd.print("Teca 1"); lcd.setCursor(0,1);   lcd.print("Umidita': ");   lcd.print(h1);   lcd.print("%"); delay(3000);                 // Show humidity value for 3 seconds lcd.setCursor(0,1);          // Switch to temperature visualization   lcd.print("Temperat: ");   lcd.print(t1);   lcd.print("C"); delay(3000);                // Show temperature value for 3 seconds // READING SENSOR 2   float h2 = dht2.readHumidity();      // Read humidity   float t2 = dht2.readTemperature();   // Read temperature as Celsius     float hi2 = dht.computeHeatIndex(t2, h2);  // Compute heat index   lcd.setCursor(5, 0);            // Print values from sensor 2 on lcd   lcd.print("Teca 2");   lcd.setCursor(0,1);   lcd.print("Umidita': ");   lcd.print(h2);   lcd.print("%"); delay(3000);                      // Show humidity value for 3 seconds lcd.setCursor(0,1);              // Switch to temperature visualization   lcd.print("Temperat: ");   lcd.print(t2);   lcd.print("C"); delay(3000);                    // Show temperature value for 3 seconds // READING SENSOR 3     float h3 = dht3.readHumidity();   float t3 = dht3.readTemperature();      // Read temperature as Celsius     float hi3 = dht.computeHeatIndex(t3, h3);    // Compute heat index     lcd.setCursor(5, 0);                      // Print values from sensor 3 on lcd   lcd.print("Teca 3");   lcd.setCursor(0,1);   lcd.print("Umidita': ");   lcd.print(h3);   lcd.print("%"); delay(3000);                      // Show humidity value for 3 seconds lcd.setCursor(0,1);                // Switch to temperature visualization   lcd.print("Temperat: ");   lcd.print(t3);   lcd.print("C"); delay(3000);                      // Show temperature value for 3 seconds }

Question by ade angelis   |  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


MY Tablets backlight went out!

My tablets backlight just went out i have a stylistic st5020d , does anyone know how i oculd fix it? im out of ideas

Topic by Noblevagrant   |  last reply


Has anyone modified an lcd display to use sun light for the backlight?

I'd like to use a 4" lcd display outdoors. Would it work to remove the backlight and use a mirror to direct sunlight to the back of the lcd (in conjunction with a shade for the front)? Would a sheet of white plastic work for a diffuser?Something similar to this old pocket tv system:http://tinyurl.com/dy9s8eThanks in advance for comments and suggestions.-Bob

Question by BobChiang   |  last reply


iPhone 6 with damaged backlight

I have an iPhone 6 with a backlight problem. The screen turns on with no light (I can barely see whats on the screen with bright light shined on it) but everything else still works on the phone. The touch screen works, apps work, it’s just the screen that’s really dim is what the problem is. Is this a filter that blew or is it the entire system? I have found a nice recorded solution: https://www.youtube.com/watch?v=R8BedLX7JAg but I would like to be sure that this is the correct issue. Anyone perform the repair which is shown on the video?

Topic by donaldlewis1802   |  last reply


Toggling LCD Backlight with arduino ?

Hey, I'm working on a project where I need my LCD to toggle between On/Off.  By default, the LCD is OFF showing nothing. When button is pressed, LCD should be ON. When the button is pressed again, the LCD will display a “shutdown” warning message at which the user can confirm or cancel. Right now, I just need the ON/OFF function to work (without warning message). This is the code I have been trying, but it doesn't work properly. #include #include const int Temp = 0; const int Press = 1;      const int Noise = 2;          const int Settings = 3; const int ON_OFF = 8; const int LCD_LIGHT = A4; int buttonState0 = 0; int buttonState1 = 0; int buttonState2 = 0; int buttonState3 = 0; int buttonState4 = 0; bool isLcdOn = false; LiquidCrystal lcd(12, 11, 4, 5, 6, 7); void setup() {   Serial.begin(9600);   lcd.begin(16, 2);   lcd.noDisplay();   pinMode(Settings, INPUT);   pinMode(Temp, INPUT);   pinMode(Press, INPUT);   pinMode(Noise, INPUT);   pinMode(ON_OFF, INPUT);   pinMode (LCD_LIGHT, OUTPUT);     } void loop() {   buttonState4 = digitalRead(ON_OFF);   if (buttonState4 == LOW)   {     isLcdOn = !isLcdOn;     if(isLcdOn){       lcd.clear();       lcd.setCursor(4, 0);       lcd.print("WELCOME");       lcd.display();       digitalWrite(LCD_LIGHT, HIGH);           }   }     else{       lcd.noDisplay();       digitalWrite(LCD_LIGHT, LOW);     } delay(2000);   }

Question by BME22   |  last reply


Laptop lcd backlight not working

I have an hp g70 laptop. one day I got on it and the screen couldn't be seen except if I pointed a flashlight at it. I thought the backlight had failed. I replaced the backlight but the problem still persists. any help would be much appreciated since this is my family laptop and I really don't want to spend $50 on a replacement screen assembly. thanks

Question by tvsamuel   |  last reply


Old LCD Backlight...What to do...

I have a typical CCFL-lit LCD backlight that I tore out of an ancient, dying laptop with an ancient, dying screen. The backlight is roughly 25.5cm x 19 cm (9 7/8" x 7 1/2") and about .5cm (1/4") thick. When around 18VDC is applied to the inverter, the whole rectangle lights up with a perfectly even, white, light. I've been trying to come up with something cool to do with it. So far, these ideas have included: -With a piece of protective plastic, a small lightbox for tracing or viewing negatives/slides -Mounted over a desk for a really cool lamp -Illuminated sign Does anyone have any brilliant ideas for what to build with this? A project worthy of the geekiness or the materials?

Topic by CameronSS   |  last reply


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

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

Topic by davidwinst   |  last reply


i have a tv that doesnt light the backlights, how should i go about fixing it?

Its a 40" Haier LCD TV, me and my dad picked it up at a disposal place, when we brought it home and tested it we figured the tv had some issues with th screen, we feared it might be like the 26" tv we got that just turns on and shuts off. luckily, it does not have such a issue, i checked and it is just the backlight that has a problem. and, from further investigation, it appears the ccfl's are not getting any power from the inverter board. the inverter is split into two parts it seems, there is a lrge inverter looking component on the power board which has two wires that connect to the board the ccfls connect to, which has numerous smaller inverters on it. a interesting discovery was that the to wires from the larger inverter piece get bridged when they reach the sub-board. im assuming its the board with several smaller inverters, because it is getting -12v of power, im not sure if thats normal but ive never seen a inverter setup like this before so its hard to tell. my camera battery is dead at the time of this post but i wil get pictures put up so people can see what im dealing with. the tv was made april 27th 2009. it has 8 CCFL's in it, which seems like a lot but im not exactly sure. so i was wondering what the most efficient way of repairing it would be: -replace possibly damaged inverter board with a new one -replace CCFL's with a LED light strip (im leaning toward this) -replace bad inverter board with a set of replacement inverters (8 in this case) what do you guys think?

Question by zack247   |  last reply


How do you fix an LCD monitor that appears to be fine when you turn it on but then turns black after about ten seconds?

The monitor shows picture when you first turn it on, but their is a weird buzzing sound in the back. After a few seconds the screen goes black and the sound goes away, but the green light stays on. It may be the backlight, but I have not been able to take the cover off (unscrewed all the screws but the case will not come apart, neither does the base come off). Any advice ("good advice") would be helpful. Monitor: HP L1706

Question by Insect   |  last reply


Adding backlighting to an Ultraflat Logitech Keyboard.? Answered

I would like to add backlighting to my Ultraflat Logitech Keyboard but don't know how to do this properly, any help will be appreciated. Additional Details: USB powered, Author doesn't properly understand circuit diagrams.

Question by imnotarealaccount   |  last reply


How to make a power supply for an LCD backlight?

I have a piece of crap LCD monitor that I tore apart to build a projector, and I've been intrigued by the backlight ever since... I was thinking it'd make a cool light for a workbench or a lightbox for tracing, but I have no idea how to power it. It came out of a Starlogic 17" monitor, model number M17ANA. I've got the inverter still attached to the backlight, I just have no idea what the pinout is. If anyone has any ideas they're welcome.

Question by RelaxedSoup   |  last reply


How to keep backlights on from a vizio e3d320vx?

Hello all, So heres the deal, i found someone trowing out a vizio smart 3d tv and i think to myself surely i can salvage something. One of the thing i want is the cfl tubing back light. When i plug it in the back light will flash but not stay on and im pretty sure this is due to the control board needing to tell it to stay on, seeing as how this isn't working i was looking for another way to power the back light purely from the power supply. Is there anyone that cold please help me? 

Question by MarkH449   |  last reply


How to EVENLY backlight a sign using LEDs? (similar to a lightbox)

I have a circular sign that is 24" diameter. It is 3" thick and the face has glass with a printed vinyl graphic on the inside. I need the graphics to be nice and evenly bright in the dark, similar to those movie posters, or even a lightbox. I want to use LEDs because I don't want heat and also there's going to be some devices inside so there isn't much room for flourescent or neon. I've done research and found several flavors of led strips but not sure what will be best. What's the best way to back light it nice and evenly? I don't want spotting to occur wherever the LEDs are. I would really appreciate as much detail as possible because I don't know anything about electronics and what components I would need. Thanks alot!

Question by superjames   |  last reply





Box light from broken monitor

Hi, this is my first DIY project! I'm trying to convert a broken monitor into a panel light. I've successfully taken it apart, removed the LCD portion and retained only the backlight (with diffuser), which works fine. However, I have no idea how to keep the backlight on without a signal on the DVI/VGA ports, which the monitor's circuits clearly expect. When I press the power button, the backlight switches on, stays on for about 30 seconds and then switches off, presumably because there's no signal from the VGA/DVI ports.Model: T215HVN01.0Data sheet: https://datasheetspdf.com/pdf-file/789046/AUO/T21...What do I need to do to keep the backlight on as soon as the power is on? I have all the necessary tools (wires, breadboard, assorted resistors and capacitors, soldering iron, etc.). Do I need to have all the circuit boards that came with the monitor, or can I somehow make do with just the yellow board which takes care of the current and voltage to the backlight LEDs?I'm putting some pictures of the circuits here for reference... If I need to zoom in/focus on any specific part of the circuit boards, please let me know. Hoping someone can guide this electronics noob. :)

Question by MisterFrostee   |  last reply


does iphone 3g use the same coil (backlight) as the iphone 3gs?

Hey guys i have an iphone that i droped in water then the backlight died. i heard of this coil or known as backlight. i heard u need to buy a new one then take the broken one out and solder a new one. and i was wonderin if u can use a iphone 3g on the 3gs's? if u have any idea please comment or know a better way to fix the phone kk

Question by HmOnGbOi   |  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


LCD screen backlight works for 2 seconds only... what would cause that? Answered

I have a ProView LCD screen that has it's backlight on for 2 seconds only, then it stops lighting. The LCD panel itself still works, but with no backlight. I opened the screen and I can't see anything burnt. Every time I switch the screen on, all 4 CCFLs light up just fine, but only for 2 seconds, then they turn off again.  What would cause this?  Should I bother with trying to fix it, or is it too much of a hassle? Thanks!

Question by Morgantao   |  last reply



Can we separate a mobile phone LCD from backlight assembly?

Hello all, Is it possible to separate the backlight from a Mobile phone or MP4 Player LCD without damaging the function of  the LCD, In the way we can do  with  Monitor LCDs? Thanks in advance for all your answers.

Question by muhammajunaid   |  last reply


lcd power? Answered

Does anyone know the average power impute on a LCD display i need to test its backlight

Question by MACKattacksnipe   |  last reply


Help with Apple aluminum keyboard mod.

Ok so i need help with this new idea i had. i wanna mod the new imac keyboard. all aluminum n white keys so they are backlit almost like a MBP since they dont make/sell them anywhere or for that instance make them anywhere online i've checked other mod sites and no one knows how to go at this. anyway i was thinking it'd be cool to use the style they got on the caps lock and put lights where the letters would go. anyone up for this? if so please email me/pm me. thanks.

Topic by mightymac   |  last reply


Broken backlight on laptop screen - Project ideas anyone?

I'm opening up to this lovely community since your creativity never fails to amaze me. I've had a laptop that has been sitting in my closet for about a year (Its a Thinkpad T43 i believe) which was in fair shape until one day it would no longer function, hence the closet bit. I got a little curious when I was digging through clothes and found it again, and played around on it and noticed if you held a light directly on it you could just barely see the screen, so I managed to reinstall windows, hook it up through S-video to my TV, and voila. But I dont use it that much, so I wanted to do some kind of project with it. I've seen the DIY projectors made form overheads, which would seem like a logical choice since it'd be easy enough with a working screen that has no backlight, but the thing is I already own a projector capable of 720p/1080i so I'm skipping this one.I've seen people do multi touch with screens before (ie things like http://multitouch.fieryferret.com/2008/04/finished-table.html) . but I'd want to do something larger. Then there's things like https://www.instructables.com/id/Back-projection-56-inch-multitouch-television./which are cool, but i dont have the need for something large in that format. I'd like to do something like a large coffee table with multitouch (like Surface) but I'm not sure how possible that is to do. Here's a rough sketchup of the basic idea (very basic, very rough. I'm at work wiht only access to MSPaint, and should be doing work anyway :) but with the 56 inch they have that mirror setup and I dont think you could do that with something that low to the ground (like a coffee table), correct?i'd love to hear your thoughts on that, but also.. what do you guys think? Got any good ideas for laptop with just the backlight blown? I dont really need a fileserver, and I have another laptop, so if you guys have any wild ideas out there.. I'm game.Cheers,Ian

Topic by ianidas   |  last reply


How do I just power the backlighting on a broken lcd tv?

I have a busted lcd tv that the backlighting still works but i would like to get rid of stock power supply and input box. In essence make it into a light table. The plug that powers the inverter for the CFLs has 9 wires 5 red 4 black and is marked 24v. now here comes the crazy question can i wire in a 24v adapter with a simple on/off switch. Any help will be greatly appreciated. 

Question by modzero556   |  last reply


LED panel lights with water damage - other uses?

We had a slight roofing problem at work and as a resul a lot of our recently installed LED panel lights got flooded.Now, I though: How hard can it be to fix them....Surprisingly these flat replacements for flouroscent tubes are actually manufactured in a way that you can take them fully apart if you dare.Like some old computer or flat TV screens they use a row of LED's and then some sheets to direct and distribute the emitted evenly throughout the entire panel - like a backlight with no screen.What was a surprise however is the size of the LED's and how they are "soldered".Obviously a mass production in a reflow system.First problem for me was that the LED's used are right between two commonly used SMD sizes.So a 0204 is far to big while a 0102 won't even touch the solder pads.For once I did the smart thing and decided to try to remove at least the clearly faulty and correded bits first and did not order a bunch of LED's...A drop of glue is used to hold the LED's in place until they are soldered.But unlike any glue I encountered for this purpose the stuff won't come off.You can use proper double sided soldering tweezers or a heat gun to soften the solder but the LED itself won't come off.Last resort was to increase the temp of the soldering equippment to soften the glue or to even fully melt it.Lets just say the plastic film making the acutal connections like a circuit board does not tolerate the heat required...I have now a bunch of useless lights, some still working LED power supplies...Was wondering if anyone ever tried to make a backlight screen or one of these panel lights work in reverse?Meaning using natural light on the panel to "collect" it at the thin bit where the LED's were located.Might be useful with some fibre optics or solar cells.Are there other good uses for these films, foils and sheets in a backlight system?Don't want to toss them out only to realise a few weeks later these things are actually good for more things...

Question by Downunder35m   |  last reply


(home made lightbox) Keeping backlight on - which pins to bridge on monitor psu board

Thought id seek a bit of pro advice from the forums for my first post as im totally drawing blanks on this one!. i am trying to finish my custom lightbox made from an old hanns.g hh281 monitor. at the moment, when powered on, the backlight turns on then off after a few seconds as no pc signal is being received.  i have taken a picture of the connector to the main board as i cannot figure out which 2 pins to bridge to keep the ccfl backlights on :-( i was guessing one of the ground pin and the on/off  would work but didnt want to mess this up on the first go . any input would be a godsend! thanks all!

Topic by Aikon359   |  last reply


help, i want to make a glowing logo with mobile phone lcd backlight ?

I have an lcd from my old LG GW 300 and it was blank white, last month I was read tutorial how to add glowing logo like apple mac and it use lcd backlight from portable game console but i forgot to bookmark the address link and now i confuse what to do ? I just want to light up the backlight of my phone lcd, it has very tiny flexy cable and I dont know which one to use ? thanks :)

Question by rannur   |  last reply


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

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

Question by davidwinst   |  last reply


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

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

Topic by davidwinst   |  last reply


what to do with 2 15" LCD monitors with a bad backlight?

The inverters are no good so reparing and selling is out of the question. so is using them, i already have a new one for my desktop and multiple monitors never work out for me. my laptop could possibly have another monitor hooked up to it but i still cant replace the inverters. it would be too expensive to fix either, (one has a bad inverter and the other has a whole bad power board) i can power up one, a Samsung SyncMaster 740N, it has no backlight, and repairing it would cost too much. i can also power up the other one, an Acer AL1706, without using the power board, but a PC power supply. the LCDs are ok as far as i can tell without backlights (ive had them both hooked up to my laptop to test them), so what can i do with these two monitors? i have no clue what to do with them, i need some inspiration. PS: one of my friends suggested i use the acer one, with a LED backlight, in my car in conjunction with a PC, when i get my car, that is.

Question by zack247   |  last reply


Laptop LCD Cold Cathode re-use

So recently, an old laptop of mine died. It was an old dinosaur of a laptop, slowly running down the remaining years of its life. Then it died. So sad. To honor its death I dismantled it. I got an interesting motherboard, some decent speakers, a 5gb harddrive along with a floppy and disk drive. What really interested me the most though is the LCD screen. At first I hoped that I could re-used the screen as a tertiary screen for my desktop, but later I realized the near-impossibility of this task and gave it up. Instead I chose to take the screen apart for its cold cathode lamp. It's almost 12 inches in length, and very thin. Before the motherboard died, the LCD back light was still working. So I wanted to take it out, along with its inverter, to attempt to re-use it. Soon after doing this I saw a problem in my plans: the input of the inverter is a whopping nine wires. This is a bit more than I'm used to dealing with for power supplies. I was wondering if you guys knew any way that I could go around this? At request I can most more pictures and model number of the inverter in case you can't read it in the photo. tl;dr - Cold cathode inverter in picture. output is two wires, input 9 wires. How do I use this

Topic by Pixel_Master 


HP Pavillion f1503 desktop LCD monitor backlight problem, need some guidelines on how to dis-assemble it..

I do have knowledge in electronics and have enough training in soldering, but what i am looking for is a procedure on how to dis-assemble HP pavillion f1503 lcd monitor. I dont want to apply force on it because im afraid of breaking it. Thanks and hoping that someone will help me ASAP =)

Question by Gen.YoUnG_GuNZ33 


Would a stripped (backlight-removed) LCD pass IR light through?

I'm looking to create a desktop touchscreen interface.  I've seen the LCD projectors, but I was thinking that instead of creating a projector, just put a stripped LCD similar to an LCD projector: http://www.engadget.com/2006/10/17/how-to-build-your-own-hd-projector-part-1/ underneath an IR display like this: https://www.instructables.com/id/Interactive-Multitouch-Display/ Beneath it all, I would put an IR converted webcam & a lamp.  The goal is to make it as compact as possible under the desk.  This design hinges upon the IR light from the touch screen passing through the stripped LCD.   Thoughts?

Question by bullschmidt   |  last reply


Can anyone help me program this 8x1 LCD with Arduino?

I'm having trouble programming this 8x1 character LCD. It's not compatible with the Arduino's LiquidCrystal library. The manufacturer failed to give a detailed datasheet. This is the supplier of the product: click Here's the Pin Map (according to supplier) : 1.) Gnd 2.) VDD (3.3v) 3.) CS Input 4.) SCL - clock signal input 5.) SI - data input 6.) /RES - reset signal 7.) Backlight Anode (3.3v) 8.) Backlight Cathode (Gnd)

Question by ASCAS   |  last reply



Would it be possible to make the mac logo on a Macbook into a flashlight?

Would it be possible to mod a Macbook to have an ultra-bright mac logo on the back that you could use as a flashlight? Is the backlight to the screen the same light that illuminates the logo?

Question by Z.Backas   |  last reply


CCFL tubes...what is the range of power they operate in ?

I see write-ups aplenty of how to fix screen backlights and re-using CCFLs from scanners and such, and ALL say 'beware high voltage !'. NONE, however, specify what those voltages/currents/frequencies may actually BE ???! Several times I have been offered LCD monitors with obvious backlight problems and have only gotten one to work by replacing bad caps. This all makes me wonder - could it be that the ballast from a dead, smallish CFL might power a CCFL quite nicely - does anyone know ?! Thanks for any replies ! PS: Please, no lectures about the dangers of high voltages and so forth, this question is being asked by an adult who is safety conscious.

Question by vtsnaab   |  last reply


When hooking LCD monitor back up after it is placed on the overhead, how do you hook it back up?

Do we stil need the backlight and if so where does it get placed and where/what other cables need to be used and where do they go?

Question by    |  last reply


How can I (electronically) prevent an LCD monitor from going into standby mode due to lack of a video input signal?

I have a dead LCD i want to turn into an artists light table. Q:   How can I prevent the monitor from going into standby due to no input signal? In other words, I want to make the backlighting remain on without connection to a computer.  It is a HP 24" widescreen that is able to be turned, tilted, and rotated in every direction over a wide range.  For this reason (and because I don't feel like building another box) I would like to use the existing enclosure and I have already disassembled and removed the actual LCD screen, leaving just the backlighting components. I am fairly well versed in electronics and I have tested points on the circuit boards in attempt to determine what input the circuit requires to NOT enter standby. There is a wiring harness from the LCD driver board to the inverter board with 14 wires which oddly enough, is actually labeled!  One terminal is labeled 'on/off' which I'm assuming would refer to the standby feature. This terminal measures +3.2v when the backlighting is on (not in suspend) and 0v when off (standby). I tried to jumper this to a spot on the board that is also 3.2 during standby to no avail. Can anybody help??? Thanks!

Question by clint taurus   |  last reply


Can I power a 5v LED Strip with a USB cable?

I have an old USB cable from a phone charger and a 1,50 m long 5v LED strip. I've been doing some research and I figured out that the USB cable contains 4 little cables inside: 2 for data exchange and 2 for power.  What I want to achieve is a nice and soft backlight for my TV and I don't want to waste one socket of the power supply just for that. Connecting those 2 power cables to the LED strip and plugging the USB in the TV USB port would be enough to light the strip up? If not, is it possible to achieve this with those two things? As you may have already noticed, I have 0 knowlegde and absolutely none experience about this kind of things. Thanks in advance.

Question by MarcosR38   |  last reply


THREE-DEE VIDEO from multiple lcd panels.

This morning I was watching television and thought to myself, "Wouldn't Good Morning America be so much interesting in three dimensions? This got me thinking, and I came to this idea: what would happen if you dissected a bunch of lcd monitors, removed the backlights, and stacked them. Then, you plug all of the screens into a processor that generates an image for each screen, and have a powerful backlight to illuminate these screens. I know that it is quite a stretch, but if one could work around issues such as the amount of heat produced and the cost of production, I think this could work. I think the best bet for input would be using RGB or CKMY on multiple panels, but I am not an expert in optics or any of that. So basically, this is an outline of what would need to happen, as far as I can tell: 1. A group of LCD panels that, when in a cascade formation and are fed sufficient data, produce a three-dimensional image 2. A bright backlight that is capable of illuminating said LCD group 3. A video processor capable of sending multiple signals to the screens that would produce a three dimensional image (as stated in point 1) 4. A cooling system to maintain component functionality 5. A benefactor or deep pockets 6. Lots of spare time If you have any ideas, please add them, I'd love to hear from the Instructables community.

Topic by student.mckinney   |  last reply


dgl-wh070l-12a lcd pin out

I have this lcd from a portable DVD player, I want to use it for my raspberry pi, I want know pin out, it has 2sets of pins, 1set has 4 pins out of which two are for backlight, 2nd set has 14 pins how ever last pin is nt used

Topic by Pranay ReddyK   |  last reply