Blue plastic?

So i have a rather large bank of caps i have a thin plastic cover that i some times put over the electrodes and then short out (with cans they send rather hot balls of aluminum) well my question is after doing so the plastic glows blue for about a second were i shorted it out its not my eyes iv ruled that out its a glowing blue that stays for about a second (the plastic is clear) Sorry for the bad pics

Question by R.A.T.M   |  last reply


Blue led photography...

I just took some new pictures for my BraceLED 2.0 I'ble. And look at the picture of the bracelet with the blue LED's! The reflection of the blue light on the white surface (=paper sheet) is highly overexposed! How does this happen? Is the cmos sensor in my Nikon D300s over-sensitive to this color of blue? A picture of a red-led-bracelet under (almost) the same conditions has no such effect. Picture red BraceLED: iso800, 35 mm prime, f/4, 1/20 Picture blue BraceLED: iso800, 35 mm prime lens, 1/15

Topic by ynze   |  last reply


ps3 blue light?

My ps3 has had a ylod and i have fixed this with the oven fix which is great! Now it turns on and everything but.... and theres always a but, my blu-ray drive accepts and ejects discs but when there in there it just flashes blue, clicks, light goes out, flashes blue, click....and so on.... so what the hell is happening here? i might add that i have done the oven fix before on this ps3 a couple times and now iv added an extra fan onto the bottom, powered from the brown and black wires from the cpu fan! 

Question by Xmortx114145   |  last reply


blue screen of death?

My computer crashed and now when i reboot its just a black screen with the word microsoft with the running lines.Ihave tried system repair still no good.Idont want to loose information on my lap top .running vista?

Question by  


what is this electronical component i have found?

I've found a blue thing in an old electric piano it has two legs written on it 10nJ+   -100V

Question by top.boy   |  last reply


dvd and blue-ray drives?

Do blue-ray drives read dvds and cds ?and also does a dvd or blue-ray burner have the same functions as a dvd or blue-ray drive?

Question by didgitalpunk 


Beamless blue ray laser. Answered

I have this blue ray laser cgi.ebay.com/New-100mW-405nm-Blue-Violet-blu-ray-Laser-Diode_W0QQitemZ270557735013QQihZ017QQcategoryZ42884QQcmdZViewItemQQ_trksidZp4340.m444QQ_trkparmsZalgo%3DCRX%26its%3DC%252BS%26itu%3DSI%252BUA%252BLM%252BLA%26otn%3D5%26ps%3D63%26clkid%3D8839664070272331243 in an aixiz housing with the proper driver and correct voltages and amps.  When I turn it on it acts like a blue flashlight. Instead of making a beam like a laser should it makes a weak glow like an Led that’s not very powerful. I tried focusing the lens and using it with no lens. I am running it at 90.5 MA the maximum MA is 100MA. What is wrong with my diode? It is a 200mw diode the ebay seller says it can burn paper and pop balloons  It is dimmer than a dollar store laser pointer please help!

Question by DELETED_cdousley   |  last reply


How to fix blue screen? Answered

Hello I hope that all of you are fine. I recently bought a second hand HP Pavilion laptop from eBay… when I received it I came to know that there was a problem with the wifi reception… I intended it to repair myself… so I unscrewed the LCD and came to know that the connections for the wifi were broken, so I soldered them, while doing so small bead of molten soldering wore fell on the LCD, but only damaged the plastic protection and found no dead pixels when it was turned on after fixing it… the windows started up pretty good… got the wifi signals as well but after a minute or so… one or two pixel size dots appeared on the LCD and after that the blue screen appeared… I tried to restart the laptop again but the blue screen appeared every time restarted it. I tired to restore the laptop, fix the startup, also tried to run the safe mode, but everything was useless as I  got blue screen every time… the laptop manages to operate in safemode with command prompt only once and as I tried to restore the system the blue screen appeared again… further more it sometimes gets past the windows loading in the widows repair section but when it loads the resolution changes and I get a blue screen again… it also hanged while repairing setup for the windows was operating... So a lot of different hang ups… but 99% of the time I got blue screen on all the options available… I am attaching the blue screen that I usually get… it would be so nice of you if you could guide me and help me fix my computer. Please see the attached pic Kind Regards Raishikoh

Question by raishikoh   |  last reply


how to make a blue laser?

Question by    |  last reply


Why electric arc are blue? Answered

I was wondering why electric arc are usually blue when there is a short.

Question by Sarah86   |  last reply


what can i do with an extra blue tooth headset?

What can i do with an extra blue tooth headset that is no more of any use?

Question by imakethings   |  last reply


Where can I get potassium ferrocyanide?

Potassium Ferrocyanide is a chemical that I can use to make Prussian Blue. I am currently looking for this so I can make some Prussian Blue or Laundry Blueing powder which I cannot find anywhere here. Prussian Blue will be used for making crystal tree's / forrest for my daughters. Anyone know where I can find it commonly or if I can do a synthesis of something else to extract it?  Is it used in pottery / ceramics ( this is the best source of my random chems )

Question by AtomRat   |  last reply


How to add and power a Bluetooth receiver to battery powered speakers? Answered

I have a iHome speaker that is powered off 4 AAA batteries. I want to add this bluetooth receiver to the speaker. The bluetooth receiver is powered off USB, but I want to keep the system battery powered.  Can I take apart the bluetooth receiver and solder the power connections to the power connections on the speaker?   The speaker is powered off 4 AAA batteries, so 6 volts.  (How many amps??) The bluetooth is powered from USB which is 5 volts, correct?   Would the 6 volts from the AAA batteries damage the bluetooth receiver?  What about current?

Question by rachl009   |  last reply


blue screen of death on my laptop

Ok i installed updates and when i restarted and logged on, my start bar showed up as the old windows 98 bar, and then my computer blue screened with this message stop: c00002la {fatal system error} the windows logon process system process terminated unexpectedly with a status of 0xc0000005 {0x00000000 0x00000000} the system has been shut down so i cannot do anything but go to the setup menu to look at the system, i cannot log on to windows without bluescreening everytime

Topic by ClemensY290   |  last reply


Blue Microphone Recognized by Pc But Not Working?

Okay so here is my problem I just bought a blue SNowball for my Windows 7 pc I know alot of people have issues with it but heres my problem. I got it plugged it in it says installing drivers then says failed to install drivers yet it recognizes it as a usb audio device but it just shows up in my devices and printers as unassigned with a caution symbol next to it. The thing is there are no drivers for this mic because it is plug and play, I also have tested it in different usb ports to no avail if anyone could help me thatd be great.

Question by Pinion Props   |  last reply


Blue snowball mic and windows 7?

Alright, so today I received my new new Blue Snowball only to find it is incompatible with windows 7, or at least that's what I thought. After searching through the web for a fair few hours I found that many people had got their mic working with windows 7 yet there was no driver or firmware update available to download. I managed to find a firmware update although this stopped part way through demanding administrator rights which I gave it but it still wouldn't work :L I'm using the new macbook pro with retina display if that helps with motherboard compatibility. If anybody has a blue snowball I would really appreciate a download link to the driver you are using Thanks in advance Will

Question by freerunnin1   |  last reply


hover?

Hey guys and gals blue prints for a hover or some thing that floats thanks much obileged

Question by tinker234 


Superbowl 3D glasses - congo blue? Answered

Remember the 3d glasses that everyone got for the commercial Monsters vs. Aliens during the Superbowl this year (09)? They were paper, blue colored, mnfctrd by Intel, and the "lenses" were amber and some kind of dark blue.What I was wondering was if that blue was Congo blue (LEE C181, like in Kipkay's IR goggles ible), so I could use them in making nightvision goggles. Info that might help - patent number 6687003

Question by MadBricoleur   |  last reply


how to make congo blue gel?

Question by samvish   |  last reply


does the jacket come with blue stripes?

So, basically my question is: is there a way to get the jacket with BLUE reflective stripes? I dunno, I just think it would look cooler. But that's probably just me.

Topic by thecheatscalc   |  last reply


Super Bright Blue LED Driver Answered

I was about to start a project when I got stumped. I need advice on what driver circuit would be best to drive 10-20 super bright blue LEDs off of batteries. Thanks for the help. P.S. If you need me to specify anything (which you probably will) just ask :)

Question by budhaztm   |  last reply


Blue-ish tint to my projector?

I recently bought a digital lcd data projector from garage sale , i saw the projected image before buying and was happy with it , but alas once getting it home and setting it up the image now has a blue tint it. the projector model is,  Sony VPL-351QM  lcd data projector . i think it was made in about 1994 , and it weighs about 25 kgs, to be honest when i saw it i thought it was some sort of old digital cinema projector, like they use for the Ad's before a film. any help would be much appreciated.

Question by jesusofnazereth   |  last reply


I need away to use my blue tooth ear piece as a transmitter to another blue tooth ear piece.

I need to be able to listen from a short distance away. sort of a spy device.  having its own coded freq. would be helpful too.

Question by Demascus   |  last reply


mini laser driver for 1 w blue laser pointer?

Hi anyone here?  I need help with the construction of mini (using smd)  for 1 watt blue laser driver. I find it difficult to obtain the circuit for the driver. I would be grateful if anyone can help me. Thanks in advance. Tony1gunalan

Question by Tony1gunalan   |  last reply


What names for Linux aren't taken that relate to the color blue?

I would like to know so I can create my custom distro. I would also like to know what is the issue with my UCK Ubuntu Customization Kit? https://answers.launchpad.net/uck/+question/251475

Question by nerd7473   |  last reply


digital blue badge clock need help on how to make one

Hi folks I need help I need to make a digital blue badge clock and I need help on how to make one  the idea would be a large LED or backlit LCD with plus and minus buttons for both hours and minutes so you can set the time you park so it can be shown in the window of the car to show what time you arrived however I'm new to making and not sure how to go about it so can someone please let me know how to go about it as I have never tried to wire a display of any kind

Topic by PeterC17   |  last reply


What are they

Anybody know what the little single in line components are (not the ICs in plastic cases.)Mine are blue

Topic by gimmelotsarobots   |  last reply


Why do yellow (amber) & lime green LEDs suck?

In my experience, I have dealt with many colors of LEDs, and from what it seems, red, neon green, and blue LEDs tend to be pretty good at producing light as well as surviving abuse. They also tend to require the least amount of current. However, I have found that almost all the the classic lime green and yellow LEDs are very different, and generally don't give much light output even with significant amounts of current! I have a couple of ultra bright red and blue LEDs at the moment that will glow bright enough to see them easily only a 100 microamps! That is something I simply cannot do with any of the yellow or green LEDs I've ever had! A bit of research shows that GaN and InGaN is commonly used for the blue and neon green LEDs, while GaAsP, AlGaInP, and GaP are typically used for the old-school red, amber, and lime green LEDs. I imagine brighter and more rugged yellow LEDs must exist, given their use in stop lights and road signs. Do they in fact exist? Or is our yellow LED technology still stuck in the 1980s due to little interest in them and little to no R&D;? The reason I ask is because I want to build a light source utilizing amber and blue LEDs to mimic white light, and I'm purposely trying to select colors which will give a white light w/ extremely low CRI. However I want yellow LEDs that are a closer match to blue LEDs in terms of intensity, and preferably, efficiency. I did some small scale experiments with some unknown LEDs salvaged from christmas lights, and I am impressed how poorly this light renders colors! (and how quickly my 15 ohm resistor went up in smoke driving all the yellow LEDs I had to use to equal the light from a couple of blue LEDs!) although the light hitting white paper appears purplish white, colored objects seem ghostly and take on either a deep blue, muddy grey, or yellow. Perfect for maybe a haunted house ambient lighting! Add a 50Hz capacitive driver to get some good flicker and presto, worst light quality EVER! :D

Question by -max-   |  last reply


What does the blue lead on a magnetic ballast do? Answered

I have a ballast that I want to connect to a transformer, The ballast has two red leads, a black lead, a white lead, and a blue lead. I have no idea what the blue lead is for, or if it's even necessary. Can someone help?

Question by Shagglepuff   |  last reply



What is the life cycle of a blue laser... like the ones used in the blu-ray players... it's for an engineering project.

I can't find anything on the web about it... if i could get some website links... it would be greatly appreciative.  

Question by red9er   |  last reply


Is 6000 mcd to bright for a blue led cube?

 Im making my own Arduino based led cube, and was wondering if 6000 mcd is to bright for this project.

Question by Jehrets2   |  last reply


How much power can these LEDs handle?

I'm working on a project and I would like to connect two green LEDs two ultra bright Red LEDs and 2 blue LEDs. I got the green leds from radio shack so i know they need 2.1v dc, 25ma but the red ones and blue ones I got from some old toys so I don't know what they need. Any Ideas how much power I would need if I connected them in series? I have a bunch of old wall warts of varying sizes (9v 350ma, 9v 210ma, 5v 1a, 12v 750ma 12v 150ma) but only a few LEDs so I don't want to fry them and I don't need to push them to the limts. Here's some pics of my LEDs the small one is the blue one and the other clear one is Red.

Topic by cannedham160   |  last reply


How does this effect happen?

Ok now on a night out all the photos were taken with a friends camera, now it had a very strange effect on eyes, see the picture, both her and I have brown eyes, how exactly do we end up with blue? Almost all the photos it takes do this, no problems with anything at all but eyes, even glasses and windows come out normally but the eyes...

Topic by killerjackalope   |  last reply



Adjustable Signal...radio, bluetooth, etc.

I am trying to figure out how to control a device that will be "off" while in the range of a transmitter (short range...under 10ft) and then turn on when it goes beyond the range of the signal. I would also like it to be an adjustable range. I was thinking the device would be "on" constantly as the transmitter tells it not to activate, but once it leaves the signal range it would activate.  Any thoughts? Thank you in advance.

Topic by milkyway312   |  last reply


Movie Ideas Anyone?

Hi, i'm a Independent Filmmaker for Blue Light Entertainment. I need a Movie Script Idea. I have a Genre and Topic but not a Summary. My Genre is Action/Adventure. My Topic is Police or FBI.  I want a Good ending and a little christian morals related to it.  Thanks for your Help!! Jonathan

Question by Blue Light Entertainment   |  last reply


Would it be possible to make a projector withthe rgb spectrum lazers? Answered

With the new Blue "lazers", how could you make a projector?  It would be very neat.  the trouble would be the lazers colors go all over the screen so...  Well thanks in Advance, Hope we invent a new technology!

Question by mdgnys   |  last reply


I need someone to help me with me 3x3x3 and 4x4x4 led cube schematics?

Im making them to run off my arduino UNO, And Im sure most of you are tired of seeing these. But Im going to do a 3x3x3 and 4x4x4 before tackling the massive task of the 8x8x8. I want to make sure Im doing it right, And I drew up some very basic schematics as for what I need to do. Im hoping these are at least somewhere in the ballpark. 3x3x3 http://img846.imageshack.us/img846/8991/s340604p01wl.jpg 4x4x4 http://img64.imageshack.us/img64/8792/4x4x4blueprint.jpg So yeah, thats what I have so far, as for led's heres the specs: Life Rating : 100,000 Hours Emitted Colour : Blue Size (mm) : 5mm Lens Colour : Water clear Peak Wave Length (nm) : 460 ~ 470 Forward Voltage (V) :  3.0 ~ 3.4 Reverse Current (uA) : <= 30 Luminous Intensity Typ Iv (mcd) : 6000(Typical) ~ 8000(Max) Viewing Angle : 20~25 Degree Max Power Dissipation(PM): 80mW Max Peak Forward Current(IFP): 75mA Lead Soldering Temperature : 240 Degree (<5Sec) Operating Temperature Range : -25 ~ +85 Degree Preservative Temperature Range : -30 ~ +100 Degree Not sure what resistors I need though.

Question by 'earl   |  last reply


How can I fix the blue screen of death ?

Recently I connected two ddr2 rams (1gb) into my ddr3 sockets with 2 sockets already having two ddr3 ram(2gb) . And when I turned pc on it said it has a problem and I should try to restart . I removed ddr2 ram and turned on my pc but whenever I turn it off or try to restart my pc it just ends up with "blue screen of death" .Anyone knows how can I fix that ? or is that even possible to fix ? Please! 

Question by FDelevingne   |  last reply


Whereto buy LEDs? Answered

Sure, radioshack has them(i actually just bought some) but they're expensive, even if you get the 20-pack. Anyone know about a good electronics store? I need blue and white leds, alond with other components.

Question by lawizeg   |  last reply


Connecting/combining left and right audio channels together? Answered

Hi, I have something that can only take one channel but I am wondering if I can just connect the red and blue wires together in a audio cable so it will combine these both left and right channels into a single mono source (from the amplifiers point of view). Will this cause any problems with the audio source (phone) having both channels connected together like this? Will it damage the phone or anything like that? The main reason for doing this is the source (the phone) is stereo and some songs will have parts that are only present on one channel, which means that if it is not on the channel that is connected to my homemade lm386 based amplifier you wont here that part. Thanks.

Question by Alex1M6   |  last reply


Problem with Led circuit, What's wrong?

I have 12 blue leds wired in parallel in 2 groups of 6, one of the groups work just fine while the 2nd won't light up at all. Using a 5 volt power source when I tested the 2nd group with a volt meter only .5 volts was going through the circuit. I tested each led individually and none of them will light with the same result of .5 volts. I'm out of ideas and have no clue what's wrong with it. Seeing as how both groups are wired up the exact same and one works perfectly while the other a complete mystery.Edit : My project is very similar to, all the wiring is basically the same set up. https://www.instructables.com/id/Bright-USB-Powered-LED-Light/?ALLSTEPS

Question by slayer04   |  last reply


I need help with a LED array Plan. help out?

I want to make a 512 LED array, controlled by a arduino.  Basicly, Im going for a 32 bank audio spectrum analyzer.  The bottom up, will be blue. The first thirty rows. Then the top two rows will be red.  I have NO idea how to make that work. Or what I'd need besides led's.  I was hoping to make the input just come from a ipod. so I could plug in a two way splitter into the ipod and plug the array in, and the other into a speaker. so you can hear the music of course.  I got the inspiration from this youtube video. thats what I wanna make, But with a arduino telling it what to do.  http://www.youtube.com/watch?v=LIOUXr9v2RI&feature;=related Thats where Im at so far. So any help would be greatly appreciated :D

Question by 'earl   |  last reply


Arduino bluetooth audio controlled?

Hey i was wondering if an arduino could be controlled by bluetooth, but if you say something. Like using a bluetooth ear piece connected wirelessly to your arduino board and saying "on" to turn an LED on, and same with off. Is it possible or not? Also, does anyone know where i can find a good arduino bluetooth guide? Thanks alot!!

Question by Adum24   |  last reply


How can i use a dial up modem to alow my phone to call threw land line using my pc? Answered

Hi i have a windows mobile phone and i realy want to get it to phone threw my land lines rather than using a call network. this is what i have 1X windows mobile 5.0 phone 1X vista ultimate computer 1X dial up modem 2X bluetooth usb adapters 1X land line internet please help

Question by aureliansh   |  last reply


Hello how can I control a led to switch from blue to red? Answered

Hello I am looking to use RGB led's in my astra mk5 clocks. I am looking to have some sort of controller that powers up the blue led and when the sport button pressed the blue will have to power off and then the red will come on. Can it be done or am I going to have both on at the same time :-( Hello how can I control a led to switch from blue to red?Like a car with a sports button the clocks are blue and when the sport button pressed it will power off the blue and power up the red.?

Question by Dave-v-v   |  last reply


I am making a blue laser pointer can i use this diode with this module?

Diode- cgi.ebay.com/New-100mW-405nm-Blue-Violet-blu-ray-Laser-Diode_W0QQitemZ270550739998QQcmdZViewItemQQptZLH_DefaultDomain_0 module- cgi.ebay.com/650nm-5mW-laser-module-3-2V-to-with-lens-650-nm-OEM_W0QQitemZ380221855449QQcmdZViewItemQQptZLH_DefaultDomain_0 Iwill run the laser at 100 millawatts.

Question by DELETED_cdousley   |  last reply