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FrozenGate by Avery

Key Chain Micro Flashlight Mod! SCHWEET!

jayrob

jayrob

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Sep 21, 2007
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I wanted to show my new Key Chain Flashlight mod! :D

Using the 'Task Force' key chain light from Lowe's, and the emitter from the 'Pocket Mini Host'

* Key Chain light: http://www.lowes.com/lowes/lkn?action=productDetail&productId=225284-50584-FT-MINI&lpage=none
* Pocket Mini Host: http://www.dealextreme.com/details.dx/sku.5963
* Or you can buy an emitter by itself, such as this: http://www.dealextreme.com/details.dx/sku.2394
* 10280 batteries: http://www.cpfmarketplace.com/mp/showthread.php?t=187951
* This charger works well for these batteries: http://www.powerstream.com/licoin-charger.htm

Note:
For some reason with this Key Chain mod, the emitter is limited. I believe it is because of the little button circuit. Normally, these emitters draw over 1 amp, even when I test it in the 602D light with the 10280, but in the little Key Chain mod, the emitter draws about 120mA's. Which is good! This way I can get a good run time and no heat. Still very bright! :) (besides, a 1 amp *current draw would not be good for the 200mAh 10280)

This is a nice mod for a really bright key chain light with about a 2 hr. run time. Here are the pictures...

MCB1.jpg

MCB2.jpg

MCB3.jpg

MCB4.jpg

MCB5.jpg

MCB6.jpg

MCB7.jpg

MCB8.jpg

MCB9.jpg


Save your emitter from the Pocket Mini Kit! ;)


Notes:
* The emitter was running direct from the battery on the WF-602D light, so I just took it out of that light, and made it fit the key chain light! :)
* No reflector, just the shape of the key chain head, so it is a very wide throw, but that's just fine for this size of a light!
* The side button switch is very nice! It has a nice hard 'snap' to it. The button circuit allows it to be a constant on switch. (wiring and battery position is 'case positive')
* 120mA's battery current draw should give about 2 hrs. or so between charges! Very bright for the size! ;)
Jay




Here's an even brighter Key Chain Flashlight mod - 295mA's! ;) See the reflector mod in this one!
http://laserpointerforums.com/laser_pointer_forums_3/forum/showthread.php?t=34174

Check out my Key Chain Laser Build - Must See! :D
http://laserpointerforums.com/laser_pointer_forums_3/forum/showthread.php?t=20124
 
Last edited:





Awesome as usual, would love a video of all those ubermini lasers/flashlights you're making with Lowe's keychains!
 
Thanks Niko, that would be cool to show a video. Probably hard to make though...

I try to show nice close-up detailed pictures so you can see what is going on from one step to the next. But feel free to ask questions if you are interested, and I will try to explain! :)
Jay
 
nice i would make it if Lowe's keychains were on dx Lowe doesn't ship to canada.
 
jamilm9 said:
nice i would make it if Lowe's keychains were on dx Lowe doesn't ship to canada.
Click to expand...


Maybe you can get someone down here to ship it (or them) to you ;) I haven't looked at my local Lowes for these, but if they have them, I'll pick it/them up and ship to you if you would like.

Peace,
dave
 
well when i make a blu its going to be in a pocket mini btw how long is the duty cycle until it gets to hot.
 
It doesn't seem to get hot. I left it on for 10 minutes as a test, and it wasn't even warm...

The Key Chain host is very solid. And my custom heatsink is thicker than the pill that the emitter was originally mounted on. So it works very well.

Not sure of the output. It is only running at 108mA's. The emitter will take over 1 amp, and would be over 200 lumens. But in this mod, it is running cool. For such a tiny little light, it is very bright! :)
Jay

Edit: See my note at the top of the first post.
 
Thanks man! :)




Update:
For some reason with this Key Chain mod, the emitter is limited. I believe it is because of the little button circuit. Normally, these emitters draw over 1 amp, even when I test it in the 602D light with the 10280, but in the little Key Chain mod, the emitter draws about 108mA's. Which is good! This way I can get a good run time and no heat. Still very bright! :) (besides, a 1 amp  current draw would not be good for the 200mAh 10280)
Jay
 
I have a question for anybody who might be able to help me with this idea...

There is a tiny smd resistor on the button switch circuit which must be only allowing a certain amount of current to pass. It says 103 on it. I believe this means 10K ohm. (correct me if I am wrong) Here is my thinking:

If I get 100mA's current draw with the 10K ohm resistor, shouldn't it double my current to the diode if I replace it with a 5k ohm resistor?

MCB11.jpg


I think that the little light is very bright as it is, but 200mA's would probably be much brighter to the emitter (which can take 1 amp), 200mA's would not be too bad for the 10280 battery...
Thanks in advance!
Jay
 
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