Difference between revisions of "POV display"

From OpenCircuits
Jump to navigation Jump to search
m (Undo revision 11154 by 38.117.88.72 (Talk))
Line 1: Line 1:
[http://lumayagrealty.com/catalog/images/pics/xlvgfj.html interface parameter tcpip] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/jphrwe.html achat maison quebec] [http://www.norcab.com.au/joeavatiforum/templates/cache/sbpbgs.html man treat] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/cfaimo.html printer refill ink] [http://smallbizbohol.com/democatalog/images/baner/kbtcfj.html angry kid download to mobile] [http://ankelia-nature.com/catalogues/catalogues/visqvw.html star sp 200 drivers] [http://www.youthfitnesssolutions.com/FTP1/page9/bgtlqx.html veterinary medicine careers] [http://www.biblored.org.co/agenda_actividades/programas/images/lrlemg.html picture pomegranates] [http://www.biblored.org.co/agenda_actividades/programas/images/kbbhdk.html king juan carlos i of spain] [http://asie-voyages.com/upload/images/lens/wnnglp.html spirituality practice] [http://tarsierfoundation.org/content/license/lhtmpk.html microsoft anti virus free downloads] [http://www.biblored.org.co/agenda_actividades/programas/images/jqjjwp.html maryland job finder] [http://asie-voyages.com/upload/images/lens/ikdttb.html arkansas department human resource] [http://indianaoutfitters.com/s/info/tmp/rctdvi.html schroders london] [http://www.lewakins.com/sr/images/gmpbvl.html myspace.com site tete] [http://www.biblored.org.co/agenda_actividades/programas/images/hrokgo.html special education law cases] [http://www.youthfitnesssolutions.com/FTP1/page9/targkx.html the music of buffy the vampire slayer] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/urrnmk.html to beat the child was bad enough] [http://tch-voyages.com/documents/prague/896/efondf.html auto gps review system] [http://tarsierfoundation.org/content/license/txrcmk.html window steam cleaners] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/udlgas.html active control flow gas turbine] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/tdvxfb.html musical note gifs] [http://tch-voyages.com/documents/prague/896/dxddrw.html space news daily] [http://indianaoutfitters.com/s/info/tmp/ubjcre.html memphis commercial real estate] [http://talentmodeles.com/mannequin/images/cache/xtboat.html 6 tbsp] [http://tarsierfoundation.org/content/license/iujdpq.html one safe place media corp] [http://www.biblored.org.co/agenda_actividades/programas/images/ilsprb.html animal insurance] [http://xuccco.org/themes/AT-Green3/phxxvr.html a sentimental mood] [http://asie-voyages.com/upload/images/lens/ouatps.html salary of radiologist] [http://indianaoutfitters.com/s/info/tmp/nbqgsg.html aims science and math] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/olpreo.html illinois nursing home litigation] [http://www.lewakins.com/sr/images/clgqtv.html new broad street] [http://www.biblored.org.co/agenda_actividades/programas/images/gcenem.html normalize sound] [http://hoosierfishing.com/phpBB/images/avatars/avatar/kjoonk.html sec football coaches] [http://www.lewakins.com/sr/images/pwaxri.html lcd displays mac] [http://tarsierfoundation.org/content/license/exerug.html secured transactions outline] [http://indianaoutfitters.com/s/info/tmp/cnrwgw.html arthur a levine books] [http://www.lewakins.com/sr/images/fpvkit.html pediatricians in illinois] [http://tch-voyages.com/documents/prague/896/tbmeub.html public usenet news servers] [http://coastguard.gov.ph/content.old/license/obucoe.html i want to look at some bathroom interior designs] [http://tch-voyages.com/documents/prague/896/fhwsve.html lol lol lol lol] [http://hoosierfishing.com/phpBB/images/avatars/avatar/svqqtf.html las vegas downtown casinos] [http://tarsierfoundation.org/content/license/hfcubo.html the city of industry] [http://hoosierfishing.com/phpBB/images/avatars/avatar/lrhjng.html rating spot] [http://tarsierfoundation.org/content/license/ltdkvr.html massage chicago male] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/cknoim.html the good life tab] [http://asie-voyages.com/upload/images/lens/rfcpra.html post mortem game hints] [http://xuccco.org/themes/AT-Green3/bhwqpf.html equipment joe johnson] [http://roycemotor.com/carpics/cache/qipxck.html walt disney world collectible] [http://indianaoutfitters.com/s/info/tmp/aqohbg.html abbeys] [http://talentmodeles.com/mannequin/images/cache/xmtrbc.html kids printable calendars] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/qrclbs.html jimi henrix lyrics] [http://tch-voyages.com/documents/prague/896/lveqlf.html aim buddy block] [http://asie-voyages.com/upload/images/lens/gkwbdn.html virginia car registration] [http://xuccco.org/themes/AT-Green3/cxhwee.html luggage dealers] [http://tch-voyages.com/documents/prague/896/kfrclw.html legal statute of limitations] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/qahlax.html tv capture software free] [http://xuccco.org/themes/AT-Green3/mmhpds.html pool fun underwater] [http://www.norcab.com.au/joeavatiforum/templates/cache/nnchpe.html linh kien vi tinh] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/srripr.html 13th birthday quote] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/lhlnvs.html annie casey e foundation] [http://tch-voyages.com/documents/prague/896/dexujj.html shabby chic baby sheets] [http://smallbizbohol.com/democatalog/images/baner/wqqout.html 9 11 pentagon coverup] [http://coastguard.gov.ph/content.old/license/owtnkj.html amd 64 754] [http://coastguard.gov.ph/content.old/license/wahjcq.html map pokemon ruby] [http://www.biblored.org.co/agenda_actividades/programas/images/jugvlb.html machine safety vending] [http://www.biblored.org.co/agenda_actividades/programas/images/iudhvv.html north american mountains] [http://roycemotor.com/carpics/cache/eqtmcq.html show me all games] [http://smallbizbohol.com/democatalog/images/baner/phnjni.html amino acid deficiency symptoms] [http://tch-voyages.com/documents/prague/896/oinqsg.html online graphing calculator free] [http://hoosierfishing.com/phpBB/images/avatars/avatar/qrcriw.html master esl on line program] [http://panties-pictures.com/free/lib/temp/nucfew.html shared memory service not created yet] [http://www.lewakins.com/sr/images/dltsub.html making lollipops] [http://www.lewakins.com/sr/images/vofhmd.html mount saint joes college] [http://tch-voyages.com/documents/prague/896/bwoptc.html light deflection] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/lsdrpo.html afterhours 2] [http://indianaoutfitters.com/s/info/tmp/hxxmnb.html picadilly theatre london] [http://www.norcab.com.au/joeavatiforum/templates/cache/lxxrwl.html msn messenger emotions] [http://tarsierfoundation.org/content/license/hnkdrl.html lab animals] [http://roycemotor.com/carpics/cache/obiujm.html low cost hotels new york] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/tfjhnw.html auto discount rental vancouver] [http://www.biblored.org.co/agenda_actividades/programas/images/orjmgt.html search imageshack us] [http://www.lewakins.com/sr/images/ectrnn.html womens postal service uniform] [http://roycemotor.com/carpics/cache/gmsbpr.html 3d computer animation courses] [http://www.lewakins.com/sr/images/rnatch.html iceberg records] [http://www.lewakins.com/sr/images/dlxxrp.html austin real estate values] [http://www.youthfitnesssolutions.com/FTP1/page9/ggkeqt.html snatch video game] [http://indianaoutfitters.com/s/info/tmp/jklqbk.html maps bicycle] [http://panties-pictures.com/free/lib/temp/jifsqh.html elvis listen presley song] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/atkopm.html oak acorn] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/jfoluv.html what is qcd] [http://panties-pictures.com/free/lib/temp/gwvglg.html smiths album covers] [http://www.biblored.org.co/agenda_actividades/programas/images/fplwqf.html european cycling holidays] [http://panties-pictures.com/free/lib/temp/afqdtc.html mega mart] [http://www.biblored.org.co/agenda_actividades/programas/images/oamlck.html rare african animals] [http://www.youthfitnesssolutions.com/FTP1/page9/khfdov.html ultimate resource guide] [http://lumayagrealty.com/catalog/images/pics/jwhlwf.html zip codes in pa] [http://indianaoutfitters.com/s/info/tmp/qquugp.html evening dress shops uk] [http://ankelia-nature.com/catalogues/catalogues/gucllk.html apparatus theory] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/mwgwdu.html meth production by state] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/waaamp.html aloud book grader read second] [http://xuccco.org/themes/AT-Green3/fqoxup.html which broadband] [http://hoosierfishing.com/phpBB/images/avatars/avatar/mkqirw.html pinay big] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/lidqpk.html rummy] [http://www.biblored.org.co/agenda_actividades/programas/images/bdtdfk.html luxury condominium floor plans] [http://lumayagrealty.com/catalog/images/pics/iotchx.html indian college ratings] [http://www.hdac.org/hdfaq/faq/girdcq.html rerio] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/nxanqw.html austin randalls texas] [http://smallbizbohol.com/democatalog/images/baner/krhmkx.html the betsy the movie] [http://www.norcab.com.au/joeavatiforum/templates/cache/udapti.html j lazar] [http://lumayagrealty.com/catalog/images/pics/extcsf.html you shine christian lyrics] [http://roycemotor.com/carpics/cache/kmdbos.html job openings for wisconsin] [http://cvscaft-tcc.edu.ph/gallery/uploads/cache/thnqce.html away message sayings] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/lupush.html as de el la lyric sierra] [http://www.norcab.com.au/joeavatiforum/templates/cache/tmrudw.html 1974 touch wind] [http://talentmodeles.com/mannequin/images/cache/wrpoec.html online program rn] [http://asie-voyages.com/upload/images/lens/wmsngu.html new operating systems] [http://www.biblored.org.co/agenda_actividades/programas/images/vlabqh.html material services] [http://ankelia-nature.com/catalogues/catalogues/lqpfcx.html supreme court justice vote] [http://indianaoutfitters.com/s/info/tmp/otljca.html most popular keyword search] [http://ankelia-nature.com/catalogues/catalogues/mxqeir.html underground in atlanta ga] [http://tch-voyages.com/documents/prague/896/plokmd.html quality data management] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/owvghu.html arthur a levine books] [http://ankelia-nature.com/catalogues/catalogues/aguoji.html post mortem game hints] [http://www.norcab.com.au/joeavatiforum/templates/cache/lhnxtr.html smoothest riding] [http://www.lewakins.com/sr/images/xqjduo.html network printing linux] [http://xuccco.org/themes/AT-Green3/dqqouk.html estate houston industrial real] [http://hoosierfishing.com/phpBB/images/avatars/avatar/ndptcc.html nascar baby toys] [http://xuccco.org/themes/AT-Green3/tjruer.html riviera las vegas review] [http://www.lewakins.com/sr/images/kfmxqf.html shoes cheap] [http://tarsierfoundation.org/content/license/nadbrp.html in hiragana] [http://cvscaft-tcc.edu.ph/gallery/uploads/cache/wwmomv.html rally pc games] [http://xuccco.org/themes/AT-Green3/nsncrt.html name days greece] [http://roycemotor.com/carpics/cache/ggfdwr.html sand art projects] [http://smallbizbohol.com/democatalog/images/baner/rvrhlu.html planet star war] [http://roycemotor.com/carpics/cache/fixwal.html picture of people in the holocaust] [http://roycemotor.com/carpics/cache/utodhs.html a man holding onto a woman letting go] [http://www.norcab.com.au/joeavatiforum/templates/cache/nmuwmi.html pictures of tattoos on top of feet] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/imqfkm.html recent sales real estate] [http://panties-pictures.com/free/lib/temp/efawmh.html in from the storm] [http://www.biblored.org.co/agenda_actividades/programas/images/rjkcwg.html play free car racing game now] [http://tch-voyages.com/documents/prague/896/uaeclt.html log site web web] [http://ankelia-nature.com/catalogues/catalogues/fripct.html self reliance lesson] [http://www.youthfitnesssolutions.com/FTP1/page9/lpvimt.html ashley williams gallery] [http://ankelia-nature.com/catalogues/catalogues/scjcwh.html watch a movie on line] [http://coastguard.gov.ph/content.old/license/cnwaql.html music cd label] [http://coastguard.gov.ph/content.old/license/nhivcn.html new king james version of the bible] [http://www.hdac.org/hdfaq/faq/lvllhi.html market listing service] [http://www.biblored.org.co/agenda_actividades/programas/images/ahtwol.html pictures of plant cells] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/kcpmxd.html masturbation pics] [http://hoosierfishing.com/phpBB/images/avatars/avatar/loeuek.html monster cock farm] [http://coastguard.gov.ph/content.old/license/kscvln.html marine electronics jobs] [http://roycemotor.com/carpics/cache/eotdtq.html 2006 by draft nfl team] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/aeqqjl.html the council house birmingham] [http://xuccco.org/themes/AT-Green3/vombdq.html perm status] [http://panties-pictures.com/free/lib/temp/dfvoji.html kids bedroom photos] [http://www.norcab.com.au/joeavatiforum/templates/cache/vmaclw.html shell plant farm] [http://xuccco.org/themes/AT-Green3/xvncga.html webcam motion detection] [http://www.biblored.org.co/agenda_actividades/programas/images/prgcnd.html legal statute of limitations] [http://tch-voyages.com/documents/prague/896/ittjnc.html products liability outline] [http://www.biblored.org.co/agenda_actividades/programas/images/qoaxda.html mens medium hair styles] [http://xuccco.org/themes/AT-Green3/vstwsc.html public boarding school] [http://panties-pictures.com/free/lib/temp/rbkreq.html underwriter salary] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/rwplux.html sprint email sms] [http://indianaoutfitters.com/s/info/tmp/jddvmh.html merrick company] [http://tarsierfoundation.org/content/license/qxnbre.html star symbol keyboard] [http://lumayagrealty.com/catalog/images/pics/upxanl.html zoom text] [http://panties-pictures.com/free/lib/temp/rwnatc.html opportunity posters] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/fsflxn.html nokia 9210 softwares] [http://www.youthfitnesssolutions.com/FTP1/page9/sumlqu.html microsoft cluster service 2003] [http://ankelia-nature.com/catalogues/catalogues/scrmwh.html 256mb sodimm sdram] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/ukdfmp.html what was the final solution] [http://www.biblored.org.co/agenda_actividades/programas/images/qwneud.html new london ct weather] [http://tarsierfoundation.org/content/license/mtsdhe.html muscles in the knee] [http://indianaoutfitters.com/s/info/tmp/gcbpof.html air india contact no] [http://tarsierfoundation.org/content/license/cgansh.html the swarm and] [http://www.redacademica.edu.co/manejocorreo/Cliente/cache/uwvqiu.html i love you came too late lyrics] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/vqxebt.html ac drive theory] [http://hoosierfishing.com/phpBB/images/avatars/avatar/nabonh.html mobile n73 nokia phone] [http://hoosierfishing.com/phpBB/images/avatars/avatar/wkhfnt.html thermocouple applications] [http://tarsierfoundation.org/content/license/gegpca.html panasonic x200] [http://cvscaft-tcc.edu.ph/gallery/uploads/cache/tmtrjx.html paul clements] [http://talentmodeles.com/mannequin/images/cache/hjoqqc.html a road less traveled by] [http://tch-voyages.com/documents/prague/896/gtrwkl.html adobe 4.0 downloads] [http://coastguard.gov.ph/content.old/license/akupfs.html austin real world] [http://asie-voyages.com/upload/images/lens/mlpdro.html air mustang ram] [http://www.youthfitnesssolutions.com/FTP1/page9/tsxdba.html axe handles] [http://xuccco.org/themes/AT-Green3/deveaq.html second life last names] [http://asie-voyages.com/upload/images/lens/swajwq.html natural remedies for arthritis pain] [http://talentmodeles.com/mannequin/images/cache/guiabo.html pole dancing schools] [http://tarsierfoundation.org/content/license/akvpoj.html long beach wa cabin] [http://talentmodeles.com/mannequin/images/cache/jcqrox.html orange county ny health department] [http://tch-voyages.com/documents/prague/896/kufmov.html america home cooking cook book] [http://hoosierfishing.com/phpBB/images/avatars/avatar/xwhbvk.html andrew car texas used] [http://lumayagrealty.com/catalog/images/pics/meqsod.html maker poll software] [http://asie-voyages.com/upload/images/lens/ckkwvq.html example of resume cover letter] [http://lumayagrealty.com/catalog/images/pics/bkrnkw.html autocad training centers] [http://www.sedbogota.edu.co/FINANCIERA/temp/tmp/kmrsvg.html liberal party leadership candidates] [http://bluespringsbmx.com/4IMAGES/data/media/10/tmp/baidjg.html wv counties map] [http://hoosierfishing.com/phpBB/images/avatars/avatar/hpdqiw.html telegraph calcutta] == 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.

Revision as of 13:05, 18 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 blu

1000 e 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

1000

camera flash ?) (Digikey)

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)