Led Signs
Posted on 12/01/2009 11:23 am by admin |
 Vertical OPEN CLOSED Animated Store LED Light Neon Sign  US $85.00
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 Signtronix LED sign with Programming Laptop Package US $500.00
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 c002 r Led Zeppelin Rock n Roll Punk Neon Light Signs US $9.99
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 60048 Led Sushi Bar Fresh Japaness Food Sign 24x12 US $93.99
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 LED OPEN SIGN 22×13 SUPER BRIGHT NEON STYLE LARGE SIZ US $56.00
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 j213 b Sun Glasses Shop Display Decor LED Light Sign US $9.99
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 EDI Electronic Display 4 Digit LED Sign ED202 111 4D US $36.00
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 Xenon Open Sign US $31.35
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 40X15 LED IN OUTDOOR SCROLLING WINDOW MESSAGE SIGN US $1,200.00
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 60071 Led ATM Inside Sign Internet Access 24 x 12 US $93.99
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 SUPER BRIGHT LED OPEN SIGN MORE DURABLE THAN NEON US $29.99
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 LED OPEN SIGN TO CATCH YOUR ATTENTION US $45.00
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 NEWON HORIZONTAL OPEN SIGN WITH 3 COLOR WAVE LOOK US $20.00
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 LED NAILS SPAN SIGN TO CATCH YOUR ATTENTION US $35.00
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 LK Electronic LED Scrolling Moving Message Sign NEW US $73.99
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 12x16 LED Handwriting Illuminate Fluorescent Sign Boad US $65.00
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 300mm LED Sign Programmable Mirage Ball Advertisement US $236.00
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 LED Neon Light Animated Motion OPEN Business Sign L32 US $31.00
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 ADAPTIVE MICRO DIRECTOR LED INDOOR SIGN US $849.00
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 60056 Led Tattoo Piercing Open Get Ink Sign 24 x 12 US $93.99
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 LED OPEN SIGN 19×10SUPER BRIGHT NEON STYLE Smile US $56.00
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 LED Digital Outdoor Sign P 16 One Sided 66x33 US $12,799.00
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 LED Digital Outdoor Sign P 25 One Sided 33x66 US $10,799.00
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 LED Digital Outdoor Sign P 20 One Sided 3x8 US $11,999.00
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 BRAND NEW SIGNTRONIX LED 40 PROGRAMABLE SIGN US $500.00
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 NEWON Lighted OPEN Business Hours LED Window Sign New US $32.00
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 OPTEC OUTDOOR LED SIGN W COMPUTER CONTROL USED US $5,000.00
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 60033 Led Oil Change Refill Station Sign 24 x 12 US $93.99
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 LED full color VIDEO sign display board 10x13 outdoor US $14,999.00
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 18 ft Indoor Tri Color LED Ticker Sign US $4,499.00
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 s212 b Veterinary Clinic Pet Shop Led Neon Light Sign US $9.99
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 RED LED OPEN SIGN Leotek OP 011 R FLASHING NEW in BOX US $9.99
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 NEW LED OPEN Retail Sign with FLASH PATTERNS US $10.00
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 LED Programmable Sign OUTDOOR or WINDOW Scrolling Sign US $242.50
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 Open Sign with Business Hours US $109.00
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 Personalized 3D Signs from US $3000 US $30.00
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 60060 Led Mexican Food Open Restaurant Sign 24 x 12 US $93.99
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 LED Digital Outdoor Sign P 20 One Sided 3x4 US $6,899.00
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 ADAPTIVE MICRO SYSTEMS Electronic Message Sign US $129.00
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 NEW Beta Brite Remote for your LED sign US $17.00
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 New Alpha remote for your LED sign US $12.00
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 LED Open Sign US $9.99
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 SIGNTRONIX LED SIGN MODEL LED 40 US $203.72
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 LED Neon Animated HAIR CUT BEAUTY SALON OPEN Sign B61 US $24.99
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 LED Neon Light Animated Motion PIZZA Business Sign L49 US $19.99
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 LED Neon Light Animated Motion TATTOO Business Sign 65 US $19.99
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 LED Neon Light Animated Nail Waxing OPEN Sign B228 US $19.99
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 LED Neon Light Animated Motion ATM Business Sign L58 US $19.99
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 LED Neon Light Animated Motion ATM Business Sign L43 US $19.99
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 LED Neon Light Animated Coffee Espresso Cappuccino sign US $19.99
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 LED Neon Light Animated Motion TATTOO Open Sign LB234 US $19.99
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 LED Neon Light Animated MOTION WINE BEER BAR Sign L02 US $19.99
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 Ultra Bright Deluxe LED Neon Light Animated OPEN Sign G US $69.99
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 60054 Led Hot Dog Yummy Sign Animation 24 x 12 US $93.99
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 LED Message Display Sign US $110.00
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 open sign not led works great US $9.99
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 LED Commercial Direction Sign Signal Tech X and Arrow US $20.00
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 NEWON LED open sign with Accent in Full Color US $129.00
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 Fallon Super Bright LED OPEN Sign 35x17 inches US $129.00
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 60075 Billiards 8 Ball Game Pool sign 24 x 12 US $93.99
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| ASGsigns.com |
How to make a led price sign?
Looking to make a 3 digit price sign (ex. 2.59) out of 12 volt, 12" led light bars, using 7 bars for each digit. Want to be able to change each number. How can you do it or where can I find plans for the controller. Thanks
An after thought: you could use toggle switches for each segment or you could go as I wrote it before.
You can start looking at BCD-to-7-Segment-Decoder (7SD) IC's.
Each segment of LEDs will consist of enough of them for the 12" bar.
You need one resistor in series with each LED.
All LED/Resistor combinations in each bar will be in parallel.
The voltage across each LED will be about 1.7 volts DC. If you use a 12VDC power supply, each resistor will have to drop 10.3 volts. Depending on the LED you'll have to find the current they need for a given brightness.
Supposing 20mA (0.02 A) for each LED, 10.3V/0.02A=~510 Ohms. Recalculate for your currents. Power dissipation on each resistor = E x I = 10.3 x 0.02 = 0.21 watts, use 1/2 watt resistors.
The 7-Segment-Decoder may not be capable of driving the load of all LEDs in each bar, so you may need buffers.
You'll need additional electronics to drive the 7SDs, depending on how you want to set the digits for the prices. You could use toggle switches for each 7SD input.
Get data-sheets for all components.
Visit http://www.national.com/ds/MM/MM54C48.pdf#page=1 for a 7SD data-sheet.
You could buy these parts from mouser electronics, http://mouser.com/
If you want more details, email me. Now, since you do not allow email, I couldn't reply to you unless you give me your email.
led sign
