My first headlamp mod. CREE P4

vegarfo

Newly Enlightened
Joined
Nov 11, 2008
Messages
22
Location
Trondheim
Hi.
This is my first post in this forum.
After my first glare at this heavenly forum, I knew I was ...

My name is Vegar, and I'm a Flashaholic :sssh:

It all started with a cheap 2xcr123 xenon police light I bought from eBay for $5, and the bulb went bye bye after the second set of batteries. sooo....the light ended up in my drawer for a year or so....
Then.....a lovely day here in Norway my eyes caught a glare of a web site full of gadgets, DX.

After surfing it for 2 sec. my attention went to the flashlight section.

There i found this cool R2 drop in.....
And as a former industrial mechanic I sow the potential in this lovely drop-in. it worked out sooo gooood......! (After some garage adjustment)
Story of the police light will be told in another post.
Here is just a tease of the beam shot::poke:


And here is where we come to my headlight
In my drawer there was also a ordinary halogen bulb headlight.

I stumbled over a site on the DX forum that was called KD
And found a small Cree P4 drop-in (22mm) and thought that this will fit my headlight

(And I also had an old cheapoo headlight with 3 AAA and 5 led with strobe on laying around....broken....I never throw stuff away)

It is powered by a battery pack at the back of the headband, with 4x AA 1,2v rechargeable batteries.

And here is the pic's

This is the 5 led module, and you can see the two Cree P4 drop-ins on the left.


Here is the gutted host; the circuit board will be slightly modified


This is how I want it to be in the end.


Here I've soldered a switch to cycle the modes of the 5 led light (2 modes).
Constant on, or strobe.


Here is the switch mounted in the house.

Soldered the two P4 drop-in's parallel after removing the springs at + and -


Tadaaaaa…..The light is mounted and ready to make night to day.


Here you see the red mode switch on top. I'll use the original switch to switch the P4 on/off


Here is a shot of the 2xP4 lit.


And here is the 5 led constant on.

This headlight blows my mind...!
It became 3 times as powerfull than I ever could imagine :party:
It lit up a car in about 120m with no trouble:devil:


Outdoor beam shots is to be added, just need time to rig up my Olympus E420 digital.:thumbsup:
All these shots have been taken with my sonyericsson K810i cell phone, so sorry for the quality.
 
Nice mod.

You might check how hot your drop ins are getting since heatsinking in a plastic headlamp isn't very good.

Velkommen:wave:

Sverre
 
Thanx!
I've runned it for 30 min. and it did not get warmer than my hand :)
And that was in my livingroom where it is about 28 degrees celcius ;)

I'm charging my batteries now to make a long run test to see how long it will last, and I'll be watching the temp.:huh:
 
Thanx!
I've runned it for 30 min. and it did not get warmer than my hand :)
And that was in my livingroom where it is about 28 degrees celcius ;)

I'm charging my batteries now to make a long run test to see how long it will last, and I'll be watching the temp.:huh:

The headlamp or the drop in?

Good to see another Noggin here:D
 
I felt up the drop-in....:crackup:

Where from? Norway is great for flashlights :grin2:

Oslo.

They are hard to get or expensive here, but we have a lot of quality darkness:whistle:

If the drop in was 30 degrees then heat is no issue at all.

Sverre
 
:twothumbsYeah...lovely darknes :naughty:

Just got my two mode C2 Q5 (cr123a) light today.....
Love the throw on this thing, almost as good as my headligt :thumbsup:
And guess what.....

All the streetlights in my area just blacked out, cool as hell :devil:

Not my fault...!
 
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