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Author After a couple of Leds and wire etc...***update!***
Twiggy
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Registered: 15th Oct 04
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11th Jan 09 at 19:06   View User's Profile U2U Member Reply With Quote
I have got some LED's switch and a battery thingy...

I have wired up the leds but the battery is getting red hot!!

Do i need a resistor?

[Edited on 15-01-2009 by Twiggy]
John
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Registered: 30th Jun 03
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11th Jan 09 at 19:06   View User's Profile U2U Member Reply With Quote
Go to maplin and buy them for a few quid.
Twiggy
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11th Jan 09 at 20:16   View User's Profile U2U Member Reply With Quote
nearest store is 15miles away
Dom
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Registered: 13th Sep 03
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11th Jan 09 at 20:27   View User's Profile U2U Member Reply With Quote
ebay? Order online?

[Edited on 11-01-2009 by Dom]
Twiggy
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11th Jan 09 at 20:38   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dom
ebay? Order online?

[Edited on 11-01-2009 by Dom]


MAPLINS delivery is £3
C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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12th Jan 09 at 08:35   View User's Profile U2U Member Reply With Quote
what kind of switch do you want? also, what size LED's?
pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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12th Jan 09 at 08:39   View Garage View User's Profile U2U Member Reply With Quote
15 miles = excuse for a drive.

Still, 30 miles = £3 of diesel in my car, so it might be cheaper for you to have them delivered
Brett
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Registered: 16th Dec 02
Location: Manchester
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12th Jan 09 at 09:58   View Garage View User's Profile U2U Member Reply With Quote
You want free LEDs? Hard times or what.
Twiggy
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Registered: 15th Oct 04
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13th Jan 09 at 21:29   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by loafofbrett
You want free LEDs? Hard times or what.


Nahh just cant be arse going to Maplins and asking for 4 led's

5mm Led's

Any switch so i can turn them on and off

pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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13th Jan 09 at 21:32   View Garage View User's Profile U2U Member Reply With Quote
I buy little bits of shit from maplins all the time you pooftah
C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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14th Jan 09 at 10:44   View User's Profile U2U Member Reply With Quote
i bought 1 LED, 1 Resistor and one PP3 Battery clip from Maplins back in my college days for my project. came to about £2.50.
Twiggy
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15th Jan 09 at 23:00   View User's Profile U2U Member Reply With Quote
John
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15th Jan 09 at 23:06   View User's Profile U2U Member Reply With Quote
What leds did you get and what battery?

You normally do need a resistor with leds but the led should blow before the battery gets hot.
Twiggy
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15th Jan 09 at 23:23   View User's Profile U2U Member Reply With Quote
fuck knows i got them off my bro, i think some of the led's have blown.....
Twiggy
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15th Jan 09 at 23:26   View User's Profile U2U Member Reply With Quote
i remember in school there are colour'd bands on the resistor dependent on the curcuit?
John
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Registered: 30th Jun 03
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15th Jan 09 at 23:28   View User's Profile U2U Member Reply With Quote
The bands denote resistance yes.

There are loads of sites with calculators for what you need but if you don't know the details it would just be guessing, which can normally be educated because certain led colours are normally certain values.
Twiggy
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15th Jan 09 at 23:35   View User's Profile U2U Member Reply With Quote
i think i might just fuck it off as its more hassle than its worth

 
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