|
|
| Line 1: |
Line 1: |
| − | [http://ellatsinela.22web.net/content/american-chemistry/ american chemistry journal] [http://shadowycorner.talk4fun.net/small/who-was/ who was jesus brother] [http://setch.22web.net/data/modular-programming/ modular programming c] [http://shadowycorner.talk4fun.net/small/access-db/ access db] [http://belik.totalh.com/people-first/ people first fl] [http://belik.totalh.com/i-will/ i will always be here] [http://liubash.talk4fun.net/library/make-menu.html make menu config] [http://manaev.talk4fun.net/blog/used-water.html used water well] [http://setch.22web.net/data/speciality-door/ speciality door] [http://julialincoln.totalh.com/content/travel-water/ travel water boiler] [http://woopwooooop.22web.net/adreamhomeabroad/ adreamhomeabroad] [http://divhysteric.byethost13.com/small/littleapril-video.html littleapril video] [http://sham0t.22web.net/blog/moon-zoom/ moon zoom astronomy] [http://shadowycorner.talk4fun.net/small/tim-braun/ tim braun] [http://bedep.totalh.com/content/what-singer/ what singer are you quiz] [http://englishdork10.22web.net/data/linebreak-html/ linebreak html] [http://divhysteric.byethost13.com/small/la-le.html la le lu la lo] [http://woopwooooop.22web.net/start-night/ start night club business] [http://woopwooooop.22web.net/jobs-at/ jobs at home depot canada] [http://belik.totalh.com/reid-park/ reid park] [http://englishdork10.22web.net/data/while-we/ while we were waiting] [http://divhysteric.byethost13.com/small/sad-break.html sad break up poem] [http://komoff.talk4fun.net/lib/premiership-football.html premiership football result] [http://lethal.talk4fun.net/blog/squirt-pics.html squirt pics free] [http://liubash.talk4fun.net/library/llom.html llom] [http://setch.22web.net/data/androme/ androme] [http://sham0t.22web.net/blog/rosen-associates/ rosen associates] [http://kimpurusha.talk4fun.net/content/arizona-moter.html arizona moter] [http://belik.totalh.com/wholesale-glass/ wholesale glass picture frames] [http://setch.22web.net/data/egr-control/ egr control valve] [http://shadowycorner.talk4fun.net/small/jsp-page/ jsp page scope] [http://belik.totalh.com/sitecom-adsl/ sitecom adsl router] [http://englishdork10.22web.net/data/tv-romania/ tv romania on line] [http://bedep.totalh.com/content/trucker-talk/ trucker talk] [http://bedep.totalh.com/content/linux-pp/ linux p2p clients] [http://bedep.totalh.com/content/molecular-structure/ molecular structure of glucose] [http://setch.22web.net/data/mysql-number/ mysql number of rows in a table] [http://bedep.totalh.com/content/austin-concert/ austin concert ticket tx] [http://komoff.talk4fun.net/lib/norwegian-musician.html norwegian musician] [http://bedep.totalh.com/content/water-club/ water club hotel] [http://woopwooooop.22web.net/vs/ vs 1680] [http://belik.totalh.com/i-kinda/ i kinda like it] [http://englishdork10.22web.net/data/lake-st/ lake st charles retirement] [http://manaev.talk4fun.net/blog/production-house.html production house records] [http://divhysteric.byethost13.com/small/kansas-state.html kansas state board] [http://lethal.talk4fun.net/blog/matthew-summers.html matthew summers] [http://shadowycorner.talk4fun.net/small/scottish-and/ scottish and irish name] [http://kimpurusha.talk4fun.net/content/-cent.html 50 cent and the game music videos] [http://atomites.talk4fun.net/data/vacant-land.html vacant land washington] [http://sham0t.22web.net/blog/real-estate/ real estate attorney hollywood florida] [http://setch.22web.net/data/informition/ informition] [http://setch.22web.net/data/the-den/ the den rte] [http://liubash.talk4fun.net/library/adam-burton.html adam burton] [http://julialincoln.totalh.com/content/xml-references/ xml references] [http://bedep.totalh.com/content/wal-mart/ wal mart eye centers] [http://englishdork10.22web.net/data/names-for/ names for a dog] [http://shadowycorner.talk4fun.net/small/veterinary-books/ veterinary books for kids] [http://englishdork10.22web.net/data/washington-state/ washington state university pharmacy program] [http://komoff.talk4fun.net/lib/man-hair.html man hair trend] [http://shadowycorner.talk4fun.net/small/the-game/ the game album g unit] [http://manaev.talk4fun.net/blog/laws-in.html laws in south africa] [http://woopwooooop.22web.net/apartment-find/ apartment find florida jacksonville] [http://atomites.talk4fun.net/data/oily-skin.html oily skin treatments] [http://sham0t.22web.net/blog/kids-fighting/ kids fighting chance] [http://woopwooooop.22web.net/lent-to/ lent to easter] [http://englishdork10.22web.net/data/licking-latin/ licking latin pussy] [http://komoff.talk4fun.net/lib/education-in.html education in rhode island] [http://englishdork10.22web.net/data/ukraine-embassy/ ukraine embassy] [http://bedep.totalh.com/content/wright-brother/ wright brother first flight] [http://sham0t.22web.net/blog/streetracer-online/ streetracer online] [http://sham0t.22web.net/blog/accessory-car/ accessory car] [http://englishdork10.22web.net/data/intrusting-facts/ intrusting facts about kingdom of heaven] [http://englishdork10.22web.net/data/the-wal/ the wal mart effect] [http://atomites.talk4fun.net/data/red-rock.html red rock canyon tours from las vegas] [http://setch.22web.net/data/the-real/ the real book 5th edition] [http://liubash.talk4fun.net/library/wedding-program.html wedding program jewish] [http://divhysteric.byethost13.com/small/saylers-employment.html saylers employment] [http://setch.22web.net/data/infertility-drug/ infertility drug] [http://manaev.talk4fun.net/blog/theleadershipcircle.html theleadershipcircle] [http://shadowycorner.talk4fun.net/small/punk-boys/ punk boys kissing] [http://lethal.talk4fun.net/blog/rubber-stamps.html rubber stamps for cards] [http://bedep.totalh.com/content/the-orchard/ the orchard church] [http://englishdork10.22web.net/data/professional-fashion/ professional fashion photographers] [http://setch.22web.net/data/mattress-bags/ mattress bags] [http://sham0t.22web.net/blog/online-barbie/ online barbie dress up games] [http://lethal.talk4fun.net/blog/-e.html 3 e paint horses] [http://setch.22web.net/data/writers-editing/ writers editing software] [http://liubash.talk4fun.net/library/ill-stand.html ill stand by you lyrics] [http://englishdork10.22web.net/data/ac-file/ ac3 file] [http://kimpurusha.talk4fun.net/content/sebastian-cruz.html sebastian cruz] [http://atomites.talk4fun.net/data/independence-party.html independence party of mn] [http://liubash.talk4fun.net/library/in-the.html in the event that everything should go terribly wrong] [http://julialincoln.totalh.com/content/prall/ prall] [http://manaev.talk4fun.net/blog/about-soaps.html about soaps] [http://setch.22web.net/data/emi-inc/ emi inc] [http://kimpurusha.talk4fun.net/content/lloyd-alexander.html lloyd alexander born] [http://setch.22web.net/data/mini-cylinder/ mini cylinder head] [http://julialincoln.totalh.com/content/regers-cable/ regers cable] [http://shadowycorner.talk4fun.net/small/in-japan/ in japan major religion] [http://ellatsinela.22web.net/content/roi-return/ roi return of investment] [http://metheres.6te.net/content/order-diazepam.html order diazepam] [http://wekaiser.6te.net/continental/ continental] [http://bacowen.orgfree.com/view/upright-freezers/ upright freezers] [http://bacowen.orgfree.com/view/satellite-radio/ satellite radio] [http://hohoffma.ueuo.com/chrysler-pacifica/ chrysler pacifica] [http://weboland.6te.net/description/attorney/ attorney] [http://ovap-poll.ueuo.com/html/project-runway.html project runway] [http://etpeach.ueuo.com/directory/cheap-theater/ cheap theater ticket] [http://krgiffor.orgfree.com/description/dell-computers/ dell computers] [http://etpeach.ueuo.com/directory/gothic-halloween/ gothic halloween costume] [http://cueliza.ueuo.com/directory/marriage-vows.html marriage vows] [http://kupeddy.orgfree.com/web/satellite-photos.html satellite photos] [http://metheres.6te.net/content/beatles-wallpaper.html beatles wallpaper] [http://elloveda.6te.net/description/cheap-air/ cheap air flights travel directions] [http://etpeach.ueuo.com/directory/beach-wedding/ beach wedding dress] [http://elloveda.6te.net/description/magellan-software/ magellan software] [http://krgiffor.orgfree.com/description/interior-designs/ interior designs] [http://weboland.6te.net/description/face-lifts/ face lifts] [http://nocam.ueuo.com/data/universal-studios/ universal studios] [http://cabanes.orgfree.com/small/roof-designs/ roof designs] [http://weboland.6te.net/description/search-engine/ search engine submissions] [http://bacowen.orgfree.com/view/swinger-chat/ swinger chat] [http://nocam.ueuo.com/data/bare-minerals/ bare minerals] [http://ovap-poll.ueuo.com/html/pussycat-dolls.html pussycat dolls beep] [http://hineill.ueuo.com/text/paper/ paper] [http://tesibrel.orgfree.com/blog/viagra-alternative/ viagra alternative] [http://cueliza.ueuo.com/directory/fucking-gay.html fucking gay man] [http://etpeach.ueuo.com/directory/wedding-ideas/ wedding ideas] [http://laneusus.ueuo.com/sex-video.html sex video] [http://kupeddy.orgfree.com/web/history-of.html history of bible] [http://tesibrel.orgfree.com/blog/friendship/ friendship] [http://cueliza.ueuo.com/directory/espn-college.html espn college football] [http://elloveda.6te.net/description/pampers/ pampers] [http://krgiffor.orgfree.com/description/adp/ adp] [http://mabeckha.6te.net/blog/puffy-nipples.html puffy nipples] [http://cabanes.orgfree.com/small/loan-calculator/ loan calculator] [http://tesibrel.orgfree.com/blog/cabins-north/ cabins north carolina] [http://mabeckha.6te.net/blog/multisim.html multisim] [http://cabanes.orgfree.com/small/casio/ casio] [http://tesibrel.orgfree.com/blog/sexy-adult/ sexy adult halloween costume] [http://thsteger.ueuo.com/view/roush-mustang.html roush mustang] [http://krgiffor.orgfree.com/description/noni-juice/ noni juice] [http://bacowen.orgfree.com/view/gun-cabinets/ gun cabinets] [http://cueliza.ueuo.com/directory/www-pornstar.html www pornstar] [http://cabanes.orgfree.com/small/merrill-shoes/ merrill shoes] [http://mabeckha.6te.net/blog/fairy-tatoos.html fairy tatoos] [http://nocam.ueuo.com/data/mortgage-loan/ mortgage loan calculator] [http://jacordia.6te.net/pantys.html pantys] [http://bacowen.orgfree.com/view/kaspersky/ kaspersky] [http://wekaiser.6te.net/dating-online/ dating online uk] [http://hohoffma.ueuo.com/play-blackjack/ play blackjack] [http://cueliza.ueuo.com/directory/auto-blue.html auto blue book] [http://cabanes.orgfree.com/small/dvd-burners/ dvd burners] [http://bacowen.orgfree.com/view/performance-chips/ performance chips] [http://cueliza.ueuo.com/directory/fica.html fica] [http://krgiffor.orgfree.com/description/ticket/ ticket] [http://thsteger.ueuo.com/view/wachovia.html wachovia] [http://ovap-poll.ueuo.com/html/buy-phendimetrazine.html buy phendimetrazine] [http://metheres.6te.net/content/aquarium-new.html aquarium new orleans] [http://krgiffor.orgfree.com/description/hotel-rates/ hotel rates] [http://laneusus.ueuo.com/west-coast.html west coast productions] [http://ovap-poll.ueuo.com/html/hairy-pussies.html hairy pussies] [http://ovap-poll.ueuo.com/html/best-prom.html best prom dress] [http://jacordia.6te.net/teen-sex.html teen sex movie] [http://hineill.ueuo.com/text/drug/ drug] [http://wekaiser.6te.net/jeep-unlimited/ jeep unlimited] [http://metheres.6te.net/content/lunesta.html lunesta] [http://kupeddy.orgfree.com/web/christmas-tree.html christmas tree shop] [http://hineill.ueuo.com/text/nail-polish/ nail polish] [http://wekaiser.6te.net/medieval-costumes/ medieval costumes] [http://nocam.ueuo.com/data/american-airline/ american airline arena] [http://mabeckha.6te.net/blog/elektra.html elektra] [http://bacowen.orgfree.com/view/replica-coach/ replica coach handbag] [http://laneusus.ueuo.com/sexxx.html sexxx] [http://hohoffma.ueuo.com/hud-homes/ hud homes] [http://thsteger.ueuo.com/view/best-slot.html best slot] [http://hohoffma.ueuo.com/best-airline/ best airline fare] [http://etpeach.ueuo.com/directory/bars/ bars] [http://metheres.6te.net/content/anal-video.html anal video] [http://krgiffor.orgfree.com/description/shower-curtain/ shower curtain rods] [http://krgiffor.orgfree.com/description/internet-service/ internet service] [http://kupeddy.orgfree.com/web/garuda-airlines.html garuda airlines] [http://bacowen.orgfree.com/view/boost/ boost] [http://wekaiser.6te.net/display/ display] [http://elloveda.6te.net/description/zoloft-side/ zoloft side effect] [http://kupeddy.orgfree.com/web/guess-jeans.html guess jeans] [http://hohoffma.ueuo.com/water-softners/ water softners] [http://metheres.6te.net/content/free-sudoku.html free sudoku puzzles] [http://laneusus.ueuo.com/bratz-doll.html bratz doll] [http://nocam.ueuo.com/data/calculator/ calculator] [http://krgiffor.orgfree.com/description/free-spyware/ free spyware] [http://kupeddy.orgfree.com/web/downloads.html downloads] [http://cueliza.ueuo.com/directory/online-foreign.html online foreign pharmacies] [http://thsteger.ueuo.com/view/pneumonia.html pneumonia] [http://metheres.6te.net/content/pokemon-ex.html pokemon ex card] [http://weboland.6te.net/description/adware-remover/ adware remover] [http://krgiffor.orgfree.com/description/depression/ depression] [http://cueliza.ueuo.com/directory/used-nextel.html used nextel phone for sale] [http://krgiffor.orgfree.com/description/motorcycle-insurance/ motorcycle insurance] [http://hohoffma.ueuo.com/savings-bank/ savings bank life insurance] == POV display ==
| + | == POV display == |
| | | | |
| | A "persistence of vision display" (POV display) has only a single line of LEDs blinking on and off. | | A "persistence of vision display" (POV display) has only a single line of LEDs blinking on and off. |
| Line 46: |
Line 46: |
| | Other LEDs I considered using in my POV display (and may re-consider for my next one): | | 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 | + | * $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). |
| − | 1000
| |
| − | 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" | | * $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). | | * $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 | | * $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) | | * $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. | + | * Mouser: hi-power LEDs ( http://www.mouser.com/search/refine.aspx?Ntt=LEDs+hi-power ) shows "lumens" directly -- exactly what I wanted. |
| | | | |
| | == further reading == | | == further reading == |
Revision as of 18:15, 3 November 2007
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).
- no 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
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 one.
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.
further reading
Spoke-POV and propeller clocks links:
Is this http://led-display-and-design-swicki.eurekster.com/ relevant?
I think so--71.234.233.163 18:06, 22 June 2007 (PDT)
