DIY LED Signal (UPdates page 4 brake light)

[TripleOneZero]

to use LED as tail light wad kind of resistor is used to connect 12v battery? newbie here

[spenx75]

to use LED as tail light wad kind of resistor is used to connect 12v battery? newbie here

 

Try this link, http://metku.net/index.html?sect=view&n=1&path=mods/ledcalc/index_eng

[joajas]

Anyone interested in Luxeon K2 emmiters. I might be odering them soon, those who want can pool together to get better price.

[wynsen]

hey. i'm interested in getting the k2 emmitters.

[junda15]

may i know 180Ohm (0.25W) $0.25 Each --> what is this ??

[Limsteel]

180 OHMS ¼Watt is the resistor value and power rating.

[GuiNNeSS]

Just hijack this thread again for awhile.

 

I have some Luxeon emitters leftover from last time.

 

9 X Green 3 watt

18 X deep amber 3 watt

17 X blue 3 watt

15 X red 1 watt

15 X white 3 watt 5000k color temperature

 

Let me know if you guys want any. Btw, these are no normal LEDs. Each one outputs more than 20-30 times as much light as one single 'superbright' LEDs, and can seriously damage your eyes if you look straight at it upclose for even afew seconds. I work on them with sunglasses on.

 

Used for pilot lights, each 3watt white LED is as brighter than a 15watt pole light bulb.

[joajas]

hey. i'm interested in getting the k2 emmitters.

 

U still want the K2? I might need some more for my bicycle light. How many pieces u need?

[GuiNNeSS]

http://www.picturesky.com/albums/userpics/10129/normal_Flor05.JPG

 

This is my old bike, with first generation 1 watt blue Luxeon LEDs (used two of them). 3 watt ones I have output aprox four times the light. The newer 1 watt Blue LEDs output aprox twice the amount of light as the first generation ones.

[wynsen]

hmm.. planning to do a project for diy headlights using leds.

 

what's the price for 1 piece of your white emmitters??

[GuiNNeSS]

White 3watt Emitters $10 each.

[mr hat]

White 3watt Emitters $10 each.

 

hi there nEO. i followed dis thread 1 yr ago n DIY-ed 4 signal lights using the so-called superbright amber LEDs at $0.30ea, arranging them as 6 columms by 3 rows for each signal light.... got tremendously satisfaction from DIY-ing but the results r abit disappointing coz of the small angle projection and the brightness. Feel like DIY-ing a better set of signal lights now but i hope i can clarify a few doubts b4 i commit to buying.

 

compared to normal $0.30 LEDs, are ur emitters

1) brighter? (ie. from far far can see? during day can see?)

2) wider projection angle? (ie. at the side can see or not?)

3) smaller? ( ie. can still fit into normal signal light casings?)

 

thanks for ur help in advance =)

[GuiNNeSS]

1) As intensity goes, its roughly twice as intense as 30cent LEDs, but read no.2

2) 160degrees wide beam angle. So its twice as intense as your 30cent LED, but 160degrees wide instead of just 5 degrees.

3) now it gets tricky. High powered LED requires heatsinks. I superglue them to a sheet of metal cut out to fit the signal lights.

 

I tried it on my 999, went alittle overkill with 6 LEDs per signal light. Results are incredible. Looks like flashing highbeam in amber.

[mr hat]

1) As intensity goes, its roughly twice as intense as 30cent LEDs, but read no.2

2) 160degrees wide beam angle. So its twice as intense as your 30cent LED, but 160degrees wide instead of just 5 degrees.

3) now it gets tricky. High powered LED requires heatsinks. I superglue them to a sheet of metal cut out to fit the signal lights.

 

I tried it on my 999, went alittle overkill with 6 LEDs per signal light. Results are incredible. Looks like flashing highbeam in amber.

 

1) and 2) sounds good enuff for me... but the heatsink sounds damm tedious. i'm using small signals. barely enuff space to fit in the LEDs plus the 5w resistor.....

[mr hat]

by the way nEO, how much for each white and amber Luxeon emitter?

[GuiNNeSS]

1) and 2) sounds good enuff for me... but the heatsink sounds damm tedious. i'm using small signals. barely enuff space to fit in the LEDs plus the 5w resistor.....

 

I did mod a set of small signals before, can fit up to 3 emitters inside.

 

$10 for white, $8 for amber.

[joajas]

Just an advice for those interested in dwelling into high power LEDs (1W, 3W, 5W)

 

Do ur maths before wiring up. Those leds are expensive. Any miscalculation might cause the led to burn out. They are very sensitive to heat. Overheating will garantee the led to die in a very short time.

 

Other than Luxeon, there are other high power leds, like those from Seoul Semiconductor (SSC), Cree, and some other unknown taiwan brand.

 

SSC and Cree might have alternatives to Luxeons, they have leds of the same output as luxeons, but produce less heat.

 

But they are not easy to find in singapore (very limited options).

 

Luxeons are easier to find but cost alot more if u buy in small quantities.

 

The difference in price between 1 piece and 50 pieces can differ by at least $7 a piece.

 

 

The easiest way to use these leds, is to get them with their MCPCB, or commonly known as the star config.

 

Connecting just a resistor in series to the leds is not very safe.

 

Best is to use a regulator to limit its current. An example would be LT1085-adj

 

There are plenty of information about driving these high power leds on the net, do a search.

 

Intensity of a led is always measured at the centre of the light produced. Thats why a luxeon will be brightest when u look directly at it. At its side, the intensity decreases dramatically. But it is still very much better then those cheaper commonly found leds.

 

[Limsteel]

1) and 2) sounds good enuff for me... but the heatsink sounds damm tedious. i'm using small signals. barely enuff space to fit in the LEDs plus the 5w resistor.....

 

Dude, you on low Power LED... why in the world would you need a 5W resistor?Unless if you are using High power LED, (like this one I nearly bought)

Vmin=5.5V Vmax=6.5V Current=750mA intensity=230lumen colour=White feature=LED heat sink built-in

http://i21.ebayimg.com/01/i/000/a8/7b/c34f_2.JPG

 

You put this single LED on 12V bike batt, then you will need a 5W resistor... If you put 2 (as the LED got a Vmin = 5.5VDC) then you only need; Power = 12V - (5.5V * 2) * 0.75 = 0.75W so on the safe end you need only a R = V/I = ~2ohm 1W Resistor.

right?

[Limsteel]

Get this one! 700Lumen for US$35

http://nhl4353.sinaman.com/10W1.BMP

[mr hat]

Dude, you on low Power LED... why in the world would you need a 5W resistor?Unless if you are using High power LED, (like this one I nearly bought)

Vmin=5.5V Vmax=6.5V Current=750mA intensity=230lumen colour=White feature=LED heat sink built-in

http://i21.ebayimg.com/01/i/000/a8/7b/c34f_2.JPG

 

You put this single LED on 12V bike batt, then you will need a 5W resistor... If you put 2 (as the LED got a Vmin = 5.5VDC) then you only need; Power = 12V - (5.5V * 2) * 0.75 = 0.75W so on the safe end you need only a R = V/I = ~2ohm 1W Resistor.

right?

 

alamak!! i read somehwre in the thread dat we must put 5w resistor to simulate a load dat is similar to dat of the filament bulb dat we we replacing.... so 1 w can arh?? maybe dats y my LED so dim...

 

wat effect will it have on the brightness of the LED arh?

[Limsteel]

High wattage resistor allow more Current*Voltage to pass thru, that all... nothing to do with the brightness Of LED or the blinking speed.

 

The resistor value is the one that controls the brightness... higher value will reduce the current supplied to the LED thus reducing the brightness...

 

only a low value resistor can simulate the filament bulb...

eg: a 1Ω resistor connected to 12V batt, current will be at 12A... power = to a 12W bulb. but if you buy a 5W resistor to do this task, it will melt. minimum you will need something greater (not exactly) 12W.

[WANG ZI]

HI

 

just wanna 20 mA is brighter or 50mA is brighter for led?

[Limsteel]

More current mean more power P=IV mah, general rule of the thumb... As for brighter, it depends of the manufacturer. more power doesn't mean brighter.

[junda15]

hanwoon > I've converted my brake and signal lights to 100% LEDs.

 

Not just any normal LEDs though, 3 LEDs alone provide as much light as a 25watt filament type Signal bulb. I used 6 per signal light, which is sorta an overkill.

 

Let me know if you're interested, I don't mind doing another project for someone else this time

 

bro pm me if u don't mind helping me to change my signal and brake light to LED .. Thanks ..

[adesmond2]

bros and TS... hope you can help me in this issue?

 

electrical leak until during signal left, right signal on as well when rev around 4RPM...

 

full details below...

 

http://www.singaporebikes.com/forums/showthread.php?p=6172774#post6172774