Go Back   Computer Forums > Welcome To Computer Forums .org > Social Lounge | Off Topic
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-12-2007, 04:06 PM   #1
Fully Optimized
 
ssc456's Avatar
 
Join Date: Jan 2007
Posts: 4,279
Send a message via MSN to ssc456
Default LED help

hi guys,

bin seeing alot fo stuff on instrictables ? is it that ?

lol well alot involves led's and id like to learn about it im thinking of getting some leds from here http://stores.ebay.co.uk/led-hk

and get a cheap soldering iron and id also need some resistors ?

and i have no idea where to get everything is there a proper store that does it except from ebay ?

and can some1 give me n e ideas or advice ?

seeing as its kinda cheap i figure if im terrible at it or if i cant do it or if i dont like it then i aint wasted much money .

id like to spend around 20 to get started and if i enjoy / am good at it then id prob spend more
__________________

__________________
He who has never failed has never attempted anything worth succeeding at.

Dont Eat Animals, Its Not Good For Them And They Dont Like It!
ssc456 is offline   Reply With Quote
Old 07-12-2007, 04:31 PM   #2
Golden Master
 
Raffaz's Avatar
 
Join Date: Sep 2006
Posts: 6,798
Send a message via AIM to Raffaz Send a message via MSN to Raffaz Send a message via Yahoo to Raffaz
Default Re: LED help

If your in the UK then try Maplins
__________________

Raffaz is offline   Reply With Quote
Old 07-12-2007, 04:46 PM   #3
Fully Optimized
 
ssc456's Avatar
 
Join Date: Jan 2007
Posts: 4,279
Send a message via MSN to ssc456
Default Re: LED help

are these http://www.maplin.co.uk/Module.aspx?...=2047&doy=12m7

the type of leds that i just need a resistor and a standard battery ?

Actually i might get this http://www.maplin.co.uk/module.aspx?...45928&doy=12m7

or maybe 2 of them ?

and what about the wire ? that u use to connect em all and where do i find resistors ? and how do u use resistors in comparison with leds e.g is it like 5 leds to 1 resistor and where to they go in the circiut

thanks guys
__________________
He who has never failed has never attempted anything worth succeeding at.

Dont Eat Animals, Its Not Good For Them And They Dont Like It!
ssc456 is offline   Reply With Quote
Old 07-12-2007, 04:55 PM   #4
Fully Optimized
 
ssc456's Avatar
 
Join Date: Jan 2007
Posts: 4,279
Send a message via MSN to ssc456
Default Re: LED help

r these the right resistors ? http://www.maplin.co.uk/module.aspx?...42453&doy=12m7

is this the right cable http://www.maplin.co.uk/Search.aspx?...ame=Resistance Wire&FromMenu=y&worldid=-2&doy=12m7

lol im guessing by now your probably telling me to give it up coz i know nothing lol

but please stick with me guys
__________________
He who has never failed has never attempted anything worth succeeding at.

Dont Eat Animals, Its Not Good For Them And They Dont Like It!
ssc456 is offline   Reply With Quote
Old 07-12-2007, 06:24 PM   #5
muz
Golden Master
 
muz's Avatar
 
Join Date: Oct 2006
Posts: 6,928
Default Re: LED help

Here try this to caluclate what strength resistor you need http://www.hebeiltd.com.cn/?p=zz.led...tor.calculator. Then get a resistor nearest to the strength required the calculator gives you .
__________________
Desktop-AMD Athlon 64 X2 6000+-2GB Elixer DDR2 800 250gb+500gb+500gb+120gb
Laptop-Apple Macbook Pro 13" Intel core i5(2.3ghz) 4gb Ram 320gb hard drive
muz is offline   Reply With Quote
Old 07-12-2007, 06:32 PM   #6
Golden Master
 
mark thorpe's Avatar
 
Join Date: Feb 2005
Posts: 7,366
Send a message via MSN to mark thorpe Send a message via Yahoo to mark thorpe
Default Re: LED help

www.rswww.com

great site.. we use RS at work, and they are always good with their delivery time..

you can buy kits too, not sure where from.. but i know you can get kits


or just make a simple circuit like this and have a bit of fun.. useful in the car



Quote:
This circuit will flash a bright red LED (5000 mcd) as an attention getting device or fake car alarm. Component values are not critical and other transistors may be used. Flash duration is determined by R2 and C1 and is approximately 3 time constants (3*R2*C1). Brightness is controlled by R3 wich limits the LED current to about 20 mA for values listed. R1 provides bias for the transistors which should be low enough not to saturate Q2 with the capacitor disconnected. If the circuit does not oscillate, R1 may be too low or R2 may be too high. D1 allows for higher duty cycle operation and limits the reverse voltage at the base of Q1 to -0.7 V. D1 may be omitted for low voltage (3-9) and low duty cycle operation. Most parts available at Radio Shack.
Volts R1 R2 R3 C1 Approx. Flash Rate
12 10 Mohm 22 Kohm 470 ohm 0.47 uF 140 per minute
12 10 Mohm 10 Kohm 470 ohm 1 uF 60 per minute
9 6.8 Mohm 1 Kohm 390 ohm 6.8 uF 15 per minute
6 3.3 Mohm 10 Kohm 220 ohm 1 uF 80 per minute
3 1.5 Mohm 10 Kohm 51 ohm 1 uF 120 per minute
3 3.3 Mohm 47 Kohm 51 ohm 0.47 uF 140 per minute
mark thorpe is offline   Reply With Quote
Old 07-12-2007, 09:41 PM   #7
Golden Master
 
freestyler105's Avatar
 
Join Date: Sep 2006
Posts: 7,883
Default Re: LED help

Make some throwies man:
http://graffitiresearchlab.com/?page_id=6
__________________

__________________
C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU
freestyler105 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 05:49 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0