Led Signs
Posted on 12/01/2009 11:23 am by admin
 New Ultra Bright LED Neon Light Animated OPEN Sign D23  US $8.95
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 New Ultra Bright LED Neon Light Animated OPEN Sign D46 US $8.95
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 New Ultra Bright LED Neon Light Animated OPEN Sign D01 US $8.95
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 New Ultra Bright LED Neon Light Animated OPEN Sign 161 US $8.95
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 New Super Bright LED Neon Animated Motion OPEN Sign L32 US $9.99
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 60078 Led Billiards Game Pool Snocker Sign 24x12 US $37.99
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 60061 Led Mallow French House Fries Open Sign 24x12 US $37.99
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 60060 Led Mexican Food Open Restaurant Sign 24 x 12 US $37.99
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 New Ultra Bright LED Neon Light Animated OPEN Sign D25 US $8.95
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 State Farm LED Channel Letter Sign US $.99
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 Beta Brite LED Sign Model 213C 1 US $30.99
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 60031 Led Facial Waxing Scrub laser Open Sign 24x12 US $37.99
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 New Super Bright LED Neon Light Animate OPEN Sign L41 US $9.99
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 60040 Led Aquariums Tropical Fish Sign 24 x 12 New US $37.99
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 13×213 4×1 LED NEON BRIGHT MOTION OPEN SIGN 02 US $9.99
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 New Led Neon Motion Barber Shop Open Sign 25x13x1 US $.99
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 New Led Neon Motion Bright Open Sign 24x19x1 US $.99
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 New Led Neon Motion Hair Beauty Open Sign 24x19x1 US $.99
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 New Led Neon Motion Mexican Food Open Sign 24x19x1 US $.99
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 60038 Led Open Body Foot SPA Massage Salon 24 x 12 US $37.99
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 New Ultra Bright LED Neon Light Animated OPEN Sign D33 US $8.95
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 60017 Led 24hrs Drive Thru Open Taxi Bus Sign 24x12 US $37.99
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 60018 Led Clock Watch Repair Open Sign 24x12 Bright US $37.99
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 New Super Bright LED Neon Light Animated OPEN Sign LB8 US $9.99
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 New Super Bright LED Neon Light Animated OPEN Sign L30 US $9.99
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 60014 Led Cappuccino Coffee Bar Cafe Sign 24x12 New US $37.99
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 60004 Led Payday$ $Loan$ Salary Deposti Sign 24x12 US $37.99
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 13×21×1 LED NEON BRIGHT MOTION COFFE OPEN SIGN US $.99
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 LED NEON BRIGHT MOTION OPEN SIGN 133 4×213 4×1 US $.99
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 New LED Neon Light Animated FLOWER Store OPEN Sign L26 US $19.99
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 Geographics LED Scrolling Message Sign Display US $9.99
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 NEW LED OPEN SIGN 2 COLOR LEDS MOTION LIGHTS US $14.00
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 OPEN light animated LED SIGN 24 60 cm RED BLUE US $29.99
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 New Super Bright LED Neon Light Animated OPEN Sign B161 US $9.99
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 New Super Bright LED Neon Light Animated OPEN Sign L23 US $9.99
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 LED Light Bar Menu Chalk Board Signs Write on Wipe off US $99.00
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 CASH FOR GOLD Neon Sign Light Xtra Large GENUINE NEON US $199.00
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 LED Sign Outdoor Window Programmable Scrolling Display US $795.00
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 PAWN SHOP DIAMOND NEON SIGN Xtra Lrg GENUINE NEON US $289.00
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 CASH FOR GOLD Window Decal Sign Neon Color LARGE 25X18 US $1.00
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 JEWELRY STORE DIAMOND NEON SIGN Xtra Lrg GENUINE NEON US $289.00
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 PAWN SHOP BUY SELL TRADE NEON SIGN GENUINE NEON SIGN US $179.00
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 Signtronix LED 40 Programmable Sign US $1,500.00
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 BAR LED FLASHING SIGN 480mm X 250mm BRAND NEW IN BOX US $22.85
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 LED Sign Programmable Scrolling Display Board PC cont US $599.00
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 Open Sign with Business Hours US $109.00
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 Vertical OPEN CLOSED Animated Store LED Light Neon Sign US $85.00
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 LED Programmable Electronic Sign Scrolling OPENNEON US $139.99
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 NEWON LED Shatterproof OPEN sign US $29.99
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 Gas Station Oil Price Change Programmable LED Sign 1pcs US $1,220.00
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 STORE BUSINESS LIGHTED LED OPEN SIGN US $79.99
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 Adaptive Alpha LED Display Sign 4120C NICE 2006 US $99.99
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 DOA SCROLLING LED COLOR SIGN PROGRAMMABLE 395 X 65 US $9.99
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 LED Electronic Display Sign Outdoor Full Color 40x96 P US $9,800.00
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 Mobile LED Electronic Sign Advertising System US $5,995.00
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 Vintage OPEN SIGN Lighted LED Works Advertising US $9.99
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 signtronix LED tri color outdoor digital message sign US $3,800.00
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 LED Sign Scoll Message board Outdoor Full color 78x78 US $7,751.00
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 New Fallon Super Bright LED Lighted OPEN Sign US $150.00
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 Newon LED Lighted OPEN Sign 30 x 18 x 2 15 watt US $125.00 |
| 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
