DOTA boyz
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« on: August 08, 2010, 05:08:50 PM » |
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How to construct an LED Digital Billboard? Include some schematics and discussions. Thanks. Here's my email chen_san009@yahoo.com.ph |
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The Philippine Electronics and Technology Forum
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« on: August 08, 2010, 05:08:50 PM » |
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rdpzycho
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« Reply #1 on: August 09, 2010, 12:01:20 AM » |
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'yung malalaki? similar sa VGA monitor ang design noon, meron ding designs using interpolation techiniques where neighboring pixels create the illusion of more pixels.
marami 'yung maliliit na boards para 'pag may napunding LED, madaling palitan 'yung part na may pundi.
sa basic design, kailangan ng 3 LED's per pixel (some designs also include a 4th white LED to increase brightness), so sa basic na 320x240 display, kailangan ng 3x320x240 = 230400 LED's.
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nucleus
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« Reply #2 on: August 09, 2010, 01:58:42 AM » |
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naisip ko noon dito ay ireplicate yung controller chip ng LCD monitors para magdrive ng LED matrix, ang problema walang makitang info kung ano yung communication na gamit
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Hi! I'm nucleus and i carry the charge  Hindi ako nandito para makipagkumpitensya kanino man |
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rdpzycho
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« Reply #3 on: August 09, 2010, 11:42:03 AM » |
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^ yup. kanya-kanyang design 'yan. may interpolation pa 'yan at arrangement ng LED na hindi similar sa LCD. 'yung 320x240 pwedeng mapalabas na 1280x960 by arrangement ng LED. tulad dito:
standard arrangement - 6 LED's = 2 pixels
G G
RB RB
with interpolation - 4 LED's = 2 pixels
GR
RB
kapag pinarami pa 'yang ganyang arrangment, magiging 1 pixel = 4 pixels, mababawasan lang ang color detail dahil kailangan mag-smear ng color dahil shared 'yung LED sa kabilang pixel.
kaya naglalagay ng white 'yung iba para tumaas ang brightness at mas magmukhang pino 'yung resolution.
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Kaizer03
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« Reply #4 on: August 09, 2010, 12:48:52 PM » |
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subscribing... im so much interested with this..EVER SINCE  |
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Lend a hand for those who are in need!=) Stop Hijacking!=) More Technical Posts!=) DataSheets are enough to answer your questions!  Kaizer Killer EX Pre-Alpha |
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DOTA boyz
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« Reply #5 on: August 10, 2010, 11:25:11 AM » |
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Kc s municpyo nmim,aq pnaggawa ng electronic billboard. D q lng alam qng panu ccmulan at anu mga ggmitin. Sna mbgyan nyo q ng detailed info. Kelangan ko dn ng katulong,kung cnu pwd. Project q kc 2 s municpyo nmin d2 s Bustos,bulacan. Slmat.
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DigitalMind
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« Reply #6 on: August 10, 2010, 11:44:29 AM » |
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yung led billboards nung nasa advertising pa ako. cost 700,000 k yung 2 by 3 ft (afaik) then bigger ones with fancy cooling and usb keylocked exponential yung price over size.
meron din for automotive na led panels. mas robust sya and maliliit yung matrix.
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rdpzycho
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« Reply #7 on: August 10, 2010, 01:08:50 PM » |
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Kc s municpyo nmim,aq pnaggawa ng electronic billboard. D q lng alam qng panu ccmulan at anu mga ggmitin. Sna mbgyan nyo q ng detailed info. Kelangan ko dn ng katulong,kung cnu pwd. Project q kc 2 s municpyo nmin d2 s Bustos,bulacan. Slmat.
seriously, mas mura at mas less hassle bumili ng gawa niyan. hindi simple ang programming nito. hindi rin simple ang construction ng hardware nito. AFAIR, at least 500,000 ang magagastos nung in-estimate namin dati 'yung materials nito. then approximately 2 months for hardware construction and another 2 months for programming with dedicated programmers. |
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DOTA boyz
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« Reply #8 on: August 11, 2010, 07:57:41 AM » |
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kht ndi n ung mlakaki billboard. Ung 1 character line lng and horizontally moving xa. D nman kelangan nung mllaki kc d kya ng budget ng municpyo.
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rdpzycho
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« Reply #9 on: August 11, 2010, 10:22:06 AM » |
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ah, 'yung single line. AFAIK, meron nang nag-thesis niyan dito.
BTW, nasa 30k ata ang ready made nun. mga 16 characters.
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"Keep on starting, and finishing will take care of itself."
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DOTA boyz
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« Reply #10 on: August 11, 2010, 02:01:38 PM » |
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Yup. Un nga. Pwd mlman san q mkkta d2 un? Infos nman po how to construct? Kelangan q n tlg gwin un,iggawa q n xa ng project proposal.
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DOTA boyz
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« Reply #11 on: August 15, 2010, 08:32:12 AM » |
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Up ko lng po 2.
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DOTA boyz
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« Reply #12 on: September 01, 2010, 09:27:54 PM » |
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San po mkkbili ng ready made n2?
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