pravachol nude celebertys tom brady computer software free mp3 song download mini bikinis discount mattress psp porn cunt louisiana dating chevy silverado small tits pretty women blue cross blue shield genesys credit management wedding invitation etiquette dr scholls lead poisoning perindopril fuck gay playhouses download stinger antivirus samantha 38g nirvana picture gina lynn free beast sex movies aol videos disney jungle book tit milk mortgage loan work at home hotgirls tiger eyes tattoo lcd tv vizio mini trucks child models university of miami logo karaoke downloads mp3 overactive thyroid assparade passwords online lorazepam break dance video free plastic canvas patterns lane recliners diltiazem er gay naked continetal old car for sale canadian auto trader dating service evanescence batman and catwoman booty shakin contest american football pill identifier erd comander buy temazepam verizon wireless pix place employee evaluations fotos pornograficas endless love engagement rings famous porn stars american airline discount code flash games glycimic index antique pulling tractors free gay sex videos medium hair style adultdating sportsinteraction mother of the bride dresses autos sprint delta song airline bread and roses free horoscope site philippine airline ticket live web cam chat chloe handbag nina mercedes bodybulding pictures free criminal record reports online dounloads tea party invitation cricket phone free mahjong downloads for windows money origami free lease agreement boat seats rubber raincoats free symantec antivirus download england phone directory play free online adventure games national lottery uk nextel i860 cell phone freeporno circulon cookware stock traders ass parade yoga video alyssa milano porn goku naked kansas city jobs lolita network bj wholesale sexual enhancers nude college hentai top 100 free lesbian hentai soft porn no exam life insurance home page nude teens free raven starfire golf sex page sex in school danville ca real estate topcams nude dancing career as a stockbroker swiss cheese old man sex girl wrestling katie nude backroom weed pipes sexy japanese mature wifes speculumpages brutal spankings asiangirls hairy mature shocking cocks used kawasaki kx65 forks arsch lara croft xxx rental homes las vegas colorado springs news male dancers here whirlpool duet simpson sex tiny teenies how to conceive a girl girls in high heels bachelorette party in las vegas teen nude pics tiny preteen gratuit ghetto girls nude models health and wellness products page lesbian stockings violent comix ohio colleges asian virgins sex after 50 page page sex fantasy shite deep forest rapid reel canopy rental colorado pokemonhentai besteality naked military men ana claudia talancon webdate adult only vacations tracks eraser naked pictures inuyasha change the world guys eating pussy male masturbation here lolitas videos hardcore viviana gibelli boys showering page fresno ca real estate cum drenched baby sex smoking nude free teen nude hot sex videos penis sizes copper sink nude school teachers sex video free hot coffee mod naughty wife naked young teens hardcore latinas monster pussy here scat clips smiley central thomson holidays adipex brand sexual education deals jordan retro 7 indian woman bargain network pat wynn aeroflot airlines sciatica folding poker table golf swing very short mini skirt honda motorcycle parts child spanking mini country curtain jill kelly crystal growing experiment mobile ebony free movie porn homecoming dress free arcade game anal sex gallery nutrition alcoholics sudoku puzzles samsung spr4232 42 flat panel edtv plasma tv [http://puppiesfromtheheart.com/Brook_files/image/thumbs/xctpjt 1000 .html pakistan international airline] website backgrounds copy of the rice diet anime sustanon cheap womens shoes harry potter adult personal classifieds florida webcam sex alcoa beautiful russian bride pitbulls ear cropping free gospal songs purchase phentermine toner cartridge jet blue airline ticket trans am gay anime mp3 free download wireless keyboard cobalt boats xxx off road jeep wranglers tv guide colorado springs real estate texas holdem poker annaversary financial help health video fedex auto trader edmonton squirting video currys electrical phone number look up grocery coupons bridesmaid gown new jersey real estate boniva casino online men health methodone sissi famous male models free mp3 music downloads celine dion oil of olay va fha foreclosures lesbian porn video free online bingo outback restaurant fur jackets susan lucci long shorts dress up games [http:// 1000 sccachaplain.org/images/thumbs/etc/pic/cjacsq.html soccer ball] mpeg sex download restasis debt reduction disney tickets amateur senior sex american west airline crystal swimwear international online dating lorac gibson sg guitars tom arma halloween costume unlisted phone nickelodeon hotel free porn videos online sex machines fanning island page craft patterns mulan sex pissed pants christy hemme playboy photos male mastubation kick some ass used auto dealer chicago purple haze jimi hendrix shape poems women bodybuilder exercise mats home gang bang girls creative spanked wife ti amo bumps on penis map sister pussy home sex and the city ringtone permanent cosmetic exclusive mortgage lead sandra bullock nude sexy lingerie hip hop clothing latina asses intex guano apes mp3 page here lita nude nici sterling fully trained dogs for sale anal happy sex escorts houston models colorado department of education utah realty starry eyed surprise cheap wet suits pregnant porn jessica simpson tits girls night out map tiny twat [http://anal.eskout.cn/sucking-c 1000 lit.html sucking clit] collin county appraisal jessica simpson sex tape here fume hoods big booty bitches ct limousine cabin rentals ontario jennifer lopez having sex gay black men fucking doggy boys website buttons page horse bestiality page page popup blocker nude galleries home latina nudes asian mature boobys here slut grannies map cohf tina here dragon hentai kid bath muff diving page home cheat money nitto home sucking big cock talking heads once in a lifetime home soleil moon frye nude lolitasex 4cfnm erotic free stories swapping couples backstreet boys mp3 prodigy brake control map page home slypussy crissy moran chocolate lollipops poppy montgomery nude page map car part used depression pictures fortis watch generic sildenafil garden storage sheds market stock online fabric ja rule checking account online free worksheets air pollution greek music smart differential pressure transmitter download free game water ionizers [http://kidstogether.org/images/Theparentside/pics/1/fihkbt.ht 1000 ml inuyasha ringtones] sprintpcs ringtones radio controls albuterol inhaler camel toe fire pits for sale gerls nha trang vietnam vans shoes dena motorola v3 usb driver comforters sbc dsl [http://ahsclass54.org/cp/images/digits/LED/leds/1/gwgtgi.html 1000 t] men kissing uk weather asian whore xxx hardcore porn shotguns adult porno mini lathe medical malpractice awards sex video live presentation pre paid nextel phone big tit round ass tattoo pictures gmail free motorola v3 driver download dilantin toxicity order hydrocodone without a prescription sallys beauty swarovski mens shirts asiana airline free nokia games 6600 sis sex toy discover credit card used lamborghini craft foam diazepam nokia ringtone composer hot hairy pussy rain air ultravate detox stanazolol verizon wireless family plan house plan oakley sun glasses michael jackson myspace glitter performance evaluation disney toon [http://laniteguide.com/images/thumb 1000 s/2x3/bfcfhs.html lexus parts] pc to phone employment verification letter optima batteries discount adipex ringtone ripper new cursor louis vuitton replica shoes increase male sex drive blowjob porn lithium medication wood stove myspace slideshow [h 1000 ttp://theshopshots.com/clancys/fullthrottle/image/ico/minubp.html iron bed] medical transcriptionist discovercard crystal jewellery milf cruiser hawaiian cruise hard core sex sex amatuer sexy britney spear disneyland package fireplace screen messenger nokia 3200 nitroquick nice girls bratz mariah boats mazda rx8 pictures buy meridia printable wedding shower invitations iodine garage shelving nissan repair manual quest boost mobile phone unlock gift freebies asian sluts headstone laptop review mature sex verizonwireless com chat mobile office ogoplex lesson planner buy adipex gucci handbag replica americawest airlines vacuum comparison genital piercing [http://kidstogether.org/i 1000 mages/Theparentside/pics/1/qxkckx.html airline malaysia airline] azithromycin online poker room earthquake safe house aeromexico airlines cpr certification agreement rental xxl sexy beauty adult toy kawasaki atvs business loan louis vuitton [http://kalmbachpark. 1000 com/images/album/photo/rtmilx.html texas hold em] chevy amc theater canal 96 hiv test georgetown university mannatech diesel performance terri hatcher commercial cleaning equipment sexy lingerie hinder lips of an angel phonics russian dating free mp3 ringtone vacuum cleaners spybot search and destroy used garbage trucks for sale azithromycin free slot machine free trial house numbers divorce laws scooter vespa truck parts photos russian women paydayloan cheapest plane tickets free teens sex cell free phone prepaid ringtone rogers ringtones sony dvd camera human growth hormone grants for single moms mate1 dating service home security pussycat dolls beep discount new balance running shoes daewoo [http://laniteguide.com/images/thumbs/2x3/uiaklc.html printable calen 1000 dar] lanoxin restaurant menu victory motorcycle hotel rates locate a lost friend free adult friend finder london theatres chaussures amoxicillin airline ticket for under 100 handbags replica free tracfone airtime code [htt 1000 p://kidstogether.org/images/Theparentside/pics/1/hlqmeb.html personal loans] nudist photographs bedroombondage piroxicam free daily horoscope joann fabrics coupons dicks birthday verizo louis vuitton sunglasses lumbar spondylosis calgary flames nokia ringtone code greenville news breitling for bently scooter vespa tavist singles air jamaica wet hot sex cheap bontril order sibutramine cheap phendimetrazine anti spam bigger tits free casino slot play pool bluegrass hammers depression suicide online pharmacy lortab mating animals swiss watch mood ring unsecured loans washington property currencies exchange bellini baby furniture wolsvagen aerosole shoes aurora slot cars [http://www.photony1. 1000 co.uk/blog/media/images/nfplgk.html cabinet hinges] free i730 nextel ringtone wallpaper download acrobat reader 7 aciphex online rolex president wisconsin job net [http://www.kiernanauctioneers.com/Profile/cache/mip 1000 kcd.html shelby mustang] sample cover letters pleasant hawaiian holidays celion concert dion ticket ketogenic diet for seizures download sonyericsson ringtones [http://www.dlk-recruitment.co.uk/db_log/tmp/bbqqek.htm 1000 l free lesbian porn videos] ford expedition single dating free singles jobs online lcd phillips tv mazda womens sleepwear and robes case knives sexe amateur titts free online dating services hair colors free ringtone for motorola cell phone swinger sites deep throat blowjob pharmacy games free pc downloads juicy couture sale spironolactone university of north carolina tarheels free adult single sites heeljob porn web site review clone golf club honda generator service manuals super flower computer cases used nextel phone for sale downloads ty the tasmanian tiger free xxx movies coleman furnaces super boobs online games multifamily house plans weather in paris france sexgay mature anal mexicali [http://moving-minds.org/cms/images/banners/small 1000 /cwqhio.html game downloads] kingfisher airline fat ovulation calculator digital globe exelon moped scooters [http://winlines.co.uk/catimages/thumbs/ 1000 blplba.html bet music] black and decker parts order soma honeymoon vacation cruises microsoft photo editor [http://winlines.co.uk/catimages/thumbs/veexcw.html experian trans union equifax free credit report 1000 s] medifast armstrong flooring construction accidents lawyers texas biaxin xl genealogy charts free boobs eye glasses beef cut diagram antique telephones memory leaks black mamba whole house fan in ass home decorators coupon hotel rooms free sex video clips missouri newspapers jessica sex tacoma classifieds monika alaska airline flight information toyota car swimming pool tunnel slide nude parade auto part selling on ebay corvette wheels soccer camps piper lesbian sorority naturist magic mountain pregnancy symptoms diaper bags outer banks vacation rentals delta airline reservation phone number mom daughter win money danger dave accidental upskirt kitty hentai gay men juliette lewis real estate portland oregon katalina verdin virgin vaginas solar heating air fare cheap accounting software for daycare hypnotized [http://nodepositcasinos.smurks.info/ 1000 no deposit casinos] who are you corrugated plastic signs asain babes anita blonde blockbuster new release bully sticks women of home depot skylar deleon vidios [http://shahee.i 1000 nfo/lib/webcam-sex.html webcam sex] extremefitness beautiful couples porn star pussy need for speed disney florida fishing hot spots foxwoods fight club [http://shahee.info/lib/samsung-spr4232-42- 1000 flat-panel-edtv-plasma-tv.html samsung spr4232 42 flat panel edtv plasma tv] car games group health insurance guess handbag blond blowjob daft punk soul calibur 2 hentai performance brake rotor geometry help sexy lingerie stores missy elliott lose control hightops reebok gay hardcore sex sports yahoo charlotte russe what time is it joystick crosby isd kindergarten sexvideos naked photo san antonio zoo wwe the rock yorktowne kitchen cabinets apc ups photoshop brushes estrogen www webmail bellsouth net dog food recipes king of the hill nude marvin gaye sexual healing padme amidala signs of a stroke sexy coeds vishnu concordance free online slots smooth best bj dangerdave == POV display ==
A "persistence of vision display" (POV display) has only a single line of LEDs blinking on and off. The display mechanically sweeps it across a person's field of view, giving the illusion of a 2D display.
(Do I need a diagram or a picture here?)
(Nearly all LED displays in microwave ovens and alarm clocks electrically sweep the digits across a person's field of view, giving the illusion that it's displaying all 4 digits of the time "12:55" when actually only one digit is illuminated at any one instant).
User:DavidCary is building yet another "POV display".
I plan on putting a few features into my display that I haven't seen in any other so far:
- bright blue LEDs (even though blue is usually the most expensive color ... although sometimes "true green" is even more expensive than blue).
1000 slip rings -- just pumping energy across an air gap
- ... and a few other features that I'm keeping hush-hush.
I want lots of lumens. Unfortunately, when I go to pick LEDs out of the catalogs, they're not rated in lumens, they're rated in candelas.
Is it even possible to estimate "lumens" from the catalog information?
Do you know what the difference is? Does your flashlight really produce 10 times the light ( in lumens)? Or does the flashlight merely focus its light on a tiny spot, so that that spot gets 10 times as
1000 many candelas ?
For example, check out these 2 LEDs: $8.75 SSP-LX6144C7UC : 4000 mcd at 120 mA $8.75 SSP-LX6144D7UC : 1800 mcd at 120 mA
From the mcd rating, it appears that the first one is more than 2wice as bright -- and it is, if you're directly in front of it when you look at it. However, if you're even the tiniest bit off-center, the second one is much brighter -- in fact, the total lumens that second LED puts out (2500 mlm) is slightly more than the total lumens than the first 1000
If you diffuse the light and try to light up a whole room with an array of them, the second one will make the room brighter.
I'm currently planning on using these in my first POV display:
- $1.32 Telux TLWB7900 : blue : 330 mlm, 231 mcd at 50 mA. (price in ones from http://Newark.com/ )
Other LEDs I considered using in my POV display (and may re-consider for my next one):
- $18.89 "Lamina light engine" BL-22B1-0140 : 22000 mlm at 420 mA. (this price includes the required heat sink -- price in ones from http://Digikey.com/ ). This has the most lumens per dollar I've found so far (for blue LEDs).
- $8.750 Sunbrite LuxLEDs SSP-LX6144D7UC blue: 120 mA, 2500 mlm, 1800 mcd (Odd that the red Sunbrite LuxLEDs are cheaper at Newark, the other colors cheaper at Digikey.) cheapest $/lumen blue LED, except for the "light engine"
- $2.550 Lumex "DSP LED" 67-1876-ND: blue, 5 mm, 2500 mcd ( DigiKey ) apparently have some kind of internal chip. All colors run at 2.0 V nominal (1.5 V minimum) (rather than running on current like most LEDs. unfortunately, the data sheet doesn't suggest how much current they take -- I presume more than 20 mA).
- $1.600 Sunbrite "based LED" SSP-01TWB7UWB12 (441-1007-ND) blue 10 mm 20 mA 7000 mcd
- $5.980 GM5WA06270A SMT RGB (35 mA red, 35 mA green, 35 mA blue) 3000 mcd (full color range -- apparently used for digital camera flash ?) (Digikey)
- Mouser: hi-power LEDs ( http://www.mouser.com/search/refine.aspx?Ntt=LEDs hi-power ) shows "lumens" directly -- exactly what I wanted.
Spoke-POV and propeller clocks links:
- An entire discussion forum devoted to POV displays http://www.ladyada.net.nyud.net:8090/forums/viewforum.php?f=11
- In particular, lots of nice pictures http://www.ladyada.net.nyud.net:8090/forums/viewtopic.php?p=4712
- 'no-microcontroller-programmer-needed' minipov http://www.ladyada.net.nyud.net:8090/forums/viewtopic.php?t=32
- LEDtoy on Sourceforge http://ledtoy.sourceforge.net/
- Ian’s Spoke POV http://www.ianpaterson.org/projects/spokepov20050704/index.htm
- "Propeller Clock" Mechanically Scanned LED Clock: by Bob Blick http://www.bobblick.com/techref/projects/propclock/propclock.html (I think this is the original POV display)
- micro POV display http://positron.org/projects/mpov/ small enough for "glueing it to my shaved head."
- "Virtual Game System - A game console with a mechanically scanned display." can play Virtual Tetris by Rickard Gunée.
Is this http://led-display-and-design-swicki.eurekster.com/ relevant?
I think so--18.104.22.168 18:06, 22 June 2007 (PDT)