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i need info on leds
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i need info on leds

by romell90 on Tue Mar 09, 2010 12:30 am

im looking for small (very small) leds like the ones found in cell phones like an old nokia or leds like the ones in led message belts. cannot find because i dont know what there called. im trying to make a similar chip to the belt buckles chip if u've seen one before, but about the size of a square cup coaster or ceramic tile. just need info on where i can buy hundreds of these leds and what there called.
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Re: i need info on leds

by adafruit on Tue Mar 09, 2010 1:16 am

they're 0603 LEDs

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Re: i need info on leds

by romell90 on Tue Mar 09, 2010 1:45 am

omg thank you, found them. cheap price too. this is like my first project. ever. any input on this project of mine i would greatly appreciate it. the chip size is (L 4.25" by W 3.75") trying to get at least 50 leds on board. LEDs dim. are (1.6 x 0.8 x 0.6 mm)
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Re: i need info on leds

by adafruit on Tue Mar 09, 2010 1:06 pm

this is a not a good 'first project'
0603 are hard to work with and require good tools.
you should get large LEDs doing what you want first. then you can miniaturize

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Re: i need info on leds

by westfw on Tue Mar 09, 2010 3:39 pm

What The Lady said.
You know you can get LED Matrix displays with 64 individual LEDs for pretty cheap:

Image

A much friendlier place to start working with lots of LEDs...
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Re: i need info on leds

by charliex on Tue Mar 09, 2010 6:49 pm

yeah there could be a 0603 in westfw's picture, and you wouldn't see it. I thought there was at first, but it was just a dust spec on the monitor.
http://032.la - Null Space Labs.
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Re: i need info on leds

by romell90 on Thu Mar 11, 2010 3:33 pm

what about Axsolight High Power LEDs. anyone know about these? please post info.
And your right about them being difficult , tried out a few with a tech buddy of mine, and smaller than i expected the LEDs to be.

im going to try working with 2mm LEDs first and see how they work out in my project.
oh and i might be able to use the matrix, dont they come with multicolor leds?
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Re: i need info on leds

by DorianG on Thu Jan 28, 2016 6:55 am

Hello my question is about "resistors to match a multiplexed led matrix" i got a project for my son a 20x10 led matrix runing from a atmega32 and BC818 tranzistors, the schematic is from
- Daniel's Blog - http://dhassel.de/projects/cool/led-matrix-display/
and schematic
http://dhassel.de/images/projects/2012- ... splay8.png
the problem is - i don t now the value of the resistors from transistor BC818 pin toled in matrix (R21-R40)
- plz help me i'm afraid not to burn my atmel32
- thank you very much sory for my engless

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