look (small screwdriver is there for scale)
Rescued attachment DSC04107.JPG

assemble and solder it together; add 1 seoul emitter connected to driver circuit and we have this ....
Rescued attachment DSC04108.JPG

then find a convenient power supply and plug in
Rescued attachment DSC04109.JPG

super high power laser beam LED disconbobulator?

edit: wow! i was almost right

[Edited on 30/11/08 by dinosaurjuice]

Flux Capacitor!!!!!!!!!!!!!

mk2

quote:

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Originally posted by dinosaurjuice
super high power laser beam LED disconbobulator?

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Rescued attachment DSC04110.JPG

quote:

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Originally posted by dinosaurjuice
super high power laser beam LED disconbobulator?

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thats an impressive little thing, im guessing similar to the things used in these fancy new bicycle lights and portable projectors?

what are you using it for?

will

remember me asking about the gimbal? a clamp for hodling objects to handlebars?

well these will be mountain bike lamps;
photos show them connected to 5 V but I have some RC 7.2 V batteries coming over from Hong Kong that should makethem even brighter. (the driver is multi voltage but I am at the lower end of the range).

Just testing a double version hour ago.

DIY cnc Mill/drill for case.







What electronis are you using.
this one currently using a modified lm2575 circuit. A bit to big at the moment to fit inside the lamp.

Martin

for a minute there I was begining to think you'd one of them things that go into the chest of iron man

What LED units are you using. Are they the star luxeon LEDs. The 3w ones have to mounted on heat sinks IICRC. I have bought some off ebay for £1.99 , but am looking for RGB ones, but cant find any.

Moss

will you be selling them? would be interested if so

LEDs are seoul p4 star emitters from here: http://www.led-tech.de/en/High-Power-LEDs-Seoul/-3.5W-Seoul-LEDs-c_121_78.html

look on RH for different colour emitters.


oook look at you with your fancy CNC!??!?!?!

hmm, very nice, I have to resort to simplistic construction.

The emitter is avaialable in surface mount and mounted on aluminum heat sink, I am using the latter.


I made a disc from split copper pipe and made cuts so I could fold down the sides to make something
like a bottle cap (that is the thing with the 4 holes in the first photo). This acts as the heatsink
the sides contacing the tube for better heat transfer.

The driver board = 3 W LED dimmer for luxeon white is from ebay,

Can't recall ebayer's name but invoice has sure electronics inc, nanjing, china. cost £ 1.09 each

name is : sureelectronics

see here



[Edited on 30/11/08 by 02GF74]

I have a pair of 6v lights 5w & 10w halogens which are great for the road but only last about an hour.
How do these compare to the lights you have built?

these will melt you eyes!!

I have twin halogen - Smart - and have had them for sometime so the silverng is beginning to go a bit.

I ahve compared the LED, running at 5 V (my 7.2 Ni-MH from HK arrived today so should be brighter still) and they are superior.

The LEDs are 3 W but I now see that 10 W are avaialable!!

Give it a couple of years and car headlamps will be LED.


someone said:

"The current ones pump out 240 lumens of light. ( As I understand it, this is a bit more than a 10W halogen bulb )"

A good halogen bulb can put out some 20lumens/watt (the big ones used i cars or big lamps), but for the smaller ones usually used i bicycle lamps, like the Smart system 11 lumens/watt is more realistic. I've compared a 2*4.5W halogen (xenon) setup to my rebel LED light flashlight (200 lumen max, 112 lumens, 50lumens and 11 lumens optional) and at 200 lumens is really A LOT stronger than 9W of halogen, even the 112 lumen setting outshines 9W halogen. Another factor is the colour tempererature. You probably need more lumens of the yellow halogen light than of the very neutral white LED-light to see equally well.

The unscientific measurements I've made at a very dark field at home shows that 200 lumens (with the beam pattern of my flashlight) give very good illumination up to 40m in front of you (every detail visible) and usable illumination up to 120m away.

Cree led units? Why fit them to your handlebars you could fit them to your helmet and then they go where you're looking.