Re: Light for a gun safe

Chris W wrote:
I want to put a light in my gun safe that will come one when I open the door. Since running power into the safe is more than I want to deal with, it will have to be battery powered, I was thinking 2 to 4 AA alkalines. Four LEDs should give me the amount of light I want. I also want an automatic dimming, where the darker it is in the room the dimmer the LEDs will be. Since this is going to run on batteries, I want it to be as efficient as it can be. I went looking at data sheets and found this,

http://www.catalyst-semiconductor.com/documents/32.pdf
I was thinking of putting a photo cell in parallel with a pot to get the value for Rset right Does this sound like a good plan or does someone have a better suggestion? I am just getting into electronics as a hobby so I'm not too familiar with what all is out there, I mostly just look through the Mouser and Digikey catalogs.
Also it is my understanding that they are making LED's more efficient all the time, can some one give me a good source for some of the newest most efficient LED's? I only need 4 for this project, but I have another project that will need a lot (around 100) and I don't want to spend more than I have to. Also, both run on batteries, so the more lumens per watt the better. Specifically I am looking for 5mm white, red and green with a viewing angle of 45 to 60 degrees with maybe some of the whites having a viewing angle of 30 degrees.


Sounds like a cool, but over-the-top application.
I used to do a lot of this kind of stuff before I got old.
Now, I'd just put a flashlight inside on the shelf and use
the time I saved not building the light to go shooting ;-)
mike

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