Ok, here is my situation. I've read a good bit on leds since I'm an avid caver. Use a petzl duo with the leds in it. But, what I want to do is. I've just bought me a metal detector and have started detecting. I would like to add an led to it to externally light up the screen in the late evening. I have included a pic of the detector head. I was thinking, all I have to do is find a small rectangular plastic box that snaps together, tap into the battery compartment which is on the top of the detector head just behind the garrett sticker seen in the pic, drill another hole in the plastic box for the led to stick out of, drill a hole in the lip on the detector head, that hangs over the screen. This way the led will go through the lip/sunshade and light up the screen. I can hadle all of that part, just don't know what to use between the batteries and the led itself. The detector runs on 4 AA batts. Most people recommend using alkalines instead of rechargables, although when the set that came in it run down I'll be trying rechargeables since I have lots of them(MiHh) that I use in my caving lights. Don't think this will be a concern with the led on the detector. Also, since the detectors batts will be supplying the led power, I don't think it will drain the batts very much will it? Would 1 normal led be enough? or maybe 2? I'm not sure. I'd also like to add a power switch on top of the box for the led. Like one of the rubber sealed ones. If anybody would like to explain to me with detail how to do this I'd appreciate it ALOT!!!!!!!!!!! I'm just not sure of the electronics part of wiring up the led. Hopefully someone will help me out!!!! Thanks for any help in advance.
