Insane Bike Light!

http://www.kolumbus.fi/hietala2/jukka/teholed/teholed.htm

This is pretty impressive.

Holy FloodSpot Batman !!

That is impressive, can anyone discern a run time from the text?

google translate to the rescue!

http://translate.google.com/transla...holed/teholed.htm&sl=fi&tl=en&history_state0=

"180 meters away from the birch stand out clearly. Power LEDs in these pictures is only 0.9
amps, because the available AA-size cells would otherwise run out too quickly.
Now, on a single charge to drive about 1.5 hours and the light is still very adequate. Full
power, or 2 amps of power I use a lithium battery that is also lighter."

Some of those pics look like a familar setting... maybe a fellow CPFer?

The output performance is great but bike lights are often subjected to horrendous environmental conditions and this one seems to be lacking even the most basic weather proofing. It looks like it's open to water, mud, and dust. Perhaps it's still a work in progress? :thinking:

well, he weather proofed the battery compartment and regulation circuitry, but the LEDs are still open to the elements. He should look into encasing them in plastic.

Still pretty cool, imo.

One cool light. Id love to have one.:thumbsup:

The beauty of DIY. Crazy bright...

Cornkid said:

well, he weather proofed the battery compartment and regulation circuitry, but the LEDs are still open to the elements. He should look into encasing them in plastic.

Click to expand...

Sure about that? Look at pic 8, which is a small plastic tube with a lens on the end. One of each plastic tube over each LED. (pics 7 and 9-10).


I'm not saying the construction is weatherproof, but it COULD be. Those tubes CAN have a waterproof seal in each end, which will make it pretty weatherproof.

Let there be light!:twothumbs

Maybe he doesn't ride in the rain and don't need it weatherproof.

It is not that spectacular for a home made bike light and rather large. Quite a lot of people have 4 * mce setups for example or big arrays xpes e.g. I have a 10 xpe at 600ma helmet light and a 4 mce bar. The 7 XPG board and opptic that Cutters are selling will make somthing very similar a lot easier to make. Check out some of the stuff in the bike subforum.

bosscrab said:

Maybe he doesn't ride in the rain and don't need it weatherproof.

Click to expand...

Mud and dirt would still get kicked up into the assembly, though.

Even then, though, that light is spectacular. I've seen dimmer car headlamps! Kinda curious about the battery life, though- take a lot of power to keep that bad boy running for a while.

cool picks whats the white stuff on your soldered ends?

Who needs water when youve got that much light.......


Crenshaw

* a homemade light that looks homemade is crap, no matter how bright it is.
* a bike light that is this protected from the elements is crap also

the whole build part is nice and done very good, but the description that poor guy had was several years old and (even at that time) bad.
It is easy: when You see a real heatsink, the descrition is outdated. Makes more problems than it solves, makes it difficult to protect the whole thing from the elements, fins are useless as they are not in the airflow, ...

... looking froward to his following 2nd version.
When he has seen the actual "standard way of building" by using simply the head of an existing host light.
THAT then will be very nice, I am sure.

The google translate is outright hideous; I used couple minutes to make it into a bit more "english" version for those interested . It's still rather horrible but at least it should be more or less in english now...
here you go
Oh, and I'm a native finnish speaker so I'll blame the rush for errors

Cornkid said:

well, he weather proofed the battery compartment and regulation circuitry, but the LEDs are still open to the elements. He should look into encasing them in plastic.

Click to expand...

jankj said:

Sure about that? Look at pic 8, which is a small plastic tube with a lens on the end. One of each plastic tube over each LED. (pics 7 and 9-10).

Click to expand...

The text doesn't tell much (it's pretty much all translated) but I'd make a guess that the white plastic assembly with the lens is inheretly waterproof, and being glued on top of the led with polyurethane glue should be waterproof on the led's end as well.

Edit added:

yellow said:

... looking froward to his following 2nd version.
When he has seen the actual "standard way of building" by using simply the head of an existing host light.
THAT then will be very nice, I am sure.

Click to expand...

I doubt it's going to happen.
From his homepage, bottom right corner (link on the end of page), translated loosely:

My old electronics

Due to my hobby with electronics I have built several gizmos ranging from flashing led to a cd-player. Now the pace has slowed down because of my other hobbies but my older instructions are still kept safe and devices in use.

2008: Regulated current driver for led
2008: 24-watt led-light

2007: Led-light without extra electronics

2003: Cd-player (tested in HIFI-magazine 2/06) -translator's note: the magazine is (was) really named as "HIFI"

2002: Earphone amp with S/PDIF-connector

2000: Earphone amp (Pdf)

If you ask me, I don't think it will last too long. I've seen a number of LED setups in the modders forum and I don't think I've ever seen a series/parallel wiring of led's like this:

that is a nice light, very professional looking. and sickly bright