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PostPosted: 15.06.2004 17:07 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
no need for a pic, lsdiodes has a tutorial

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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PostPosted: 15.06.2004 18:22 
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Junior Modder
Junior Modder

Joined: 15.06.2004 05:29
Posts: 16
Thanks for the tutorial! this'll help me out alot. Im gonna take a run to radioshack and I'm gonna pick up a bunch of LEDs in different colours. I need also a resistor... but I don't quite understand the calculator. I was think it works along these lines- i know the logic chip has +5 volts, and I plan to put in 2 LEDs.... I dunno. Is there a tutorial for that?


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PostPosted: 15.06.2004 18:39 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
get your leds from http://www.lsdiodes.com they are much cheaper and lots brighter than anything you will find at radioshack

the package for the leds should have statistics on it that you use to fill out the calculator.

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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PostPosted: 15.06.2004 19:03 
i have a reletively small mouse.... I think I should go for the 3mm type. What the heck, ill just buy an assortment
8)
man, im gonna trace the circuitboard with ink that lights up under blacklight. When i turn out the lights and do some night-computing this mouse is gonna be BRIGHT
:D


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 Post subject:
PostPosted: 15.06.2004 19:38 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
mmmm uv ledness 8)

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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 Post subject:
PostPosted: 15.06.2004 20:37 
my mouse, like most mice, has a +5 volt logic chip. does this mean that i can hook up 2 2.5 v LEDs in a series or 5 1v LEDs in a series? hmmmmmmmm


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PostPosted: 15.06.2004 21:31 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
Anonymous wrote:
my mouse, like most mice, has a +5 volt logic chip. does this mean that i can hook up 2 2.5 v LEDs in a series or 5 1v LEDs in a series? hmmmmmmmm


should work *however you should calculate the correct resistor to use

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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PostPosted: 15.06.2004 21:50 
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Junior Modder
Junior Modder

Joined: 15.06.2004 05:29
Posts: 16
ok lets see here with the calc-- Go to the LEDs in series-- my voltage is 5v cuz thats the logic chip amount, right? so 5... then boltage drop across LED... what should i put there? 1v for 5 LED right? then the desired LED current is what? then i put in 5 LED connected? help me out here...


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PostPosted: 15.06.2004 21:52 
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Ultra Modder
Ultra Modder

Joined: 09.06.2003 08:30
Posts: 1592
Location: Orlando, FL, USA
current for the ones from lsdiodes should be about 20-25

1v yea

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-=-LSDiodes-=-

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Xxcr4shxX: what ever
Crash2108: no, tell me what w/e is first


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 Post subject:
PostPosted: 15.06.2004 21:53 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
post all the specs for the particular led you are using.

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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PostPosted: 15.06.2004 22:02 
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Junior Modder
Junior Modder

Joined: 15.06.2004 05:29
Posts: 16
Lets say im using 3 3mm red LEDs in a series which equates to roughly 5.1 V of power needed How would I calculate the Resistor needed?


http://www.lsdiodes.com/3mm/ (and look at the red one) what numbers would i plug into each thing for the calculator? (my mouse logic has +5 volts)
:)


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 Post subject:
PostPosted: 15.06.2004 23:06 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
supply voltage=5v
voltage drop = |(forward current) - (reverse current)| so 1v (i think)
led current = 20 (taken from the forward current)
# of leds

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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PostPosted: 15.06.2004 23:35 
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Junior Modder
Junior Modder

Joined: 15.06.2004 05:29
Posts: 16
thx. the calc says that I need a 100ohm resistor. How did u find the voltage drop and the desired current?
:?


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 Post subject:
PostPosted: 15.06.2004 23:40 
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Ultra Modder
Ultra Modder

Joined: 12.08.2003 04:52
Posts: 1633
Location: Maine
i looked at the statistics of the led that you directed me to, and used a little common sense. look at what i gave you and look at the stats that lsdiodes provides :wink:

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Praetorian wrote:
Nearly every finnish child can read and speak finnish, so it's very easy... :P


www.lsdiodes.com


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 Post subject:
PostPosted: 15.06.2004 23:44 
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Junior Modder
Junior Modder

Joined: 15.06.2004 05:29
Posts: 16
u got it. lemme take a look. (ive been at this for 2 days now so bare with me... :oops: I think im picking it up fairly quickly tho :D )


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