Hey folks,
Some of you may remember me coming in to this forum a few years ago and building a little light. I have it as my avatar picture now and here is another pic-
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I have a dilemma and I was hoping some of you may be able to help me with this. I built this light with help from many of you here, as well as some people on candlepower forums. I'm not sure what happened, but I got sidetracked with this and have wanted to pick back up and build more lights for some time. I've been very busy with life and work and have not had a chance until now.
I had compiled a lot of notes and info on how to do things, and I can't find any of it. I have checked PM's and threads on here and candlepower and I don't have any of it.
anyway, one of the most important pieces of information I had was how to calculate drivers and battery specs. somebody explained this to me beautifully, and I have lost that info.
for example, the first light I built was made with a cree XPG 3-up star. I can't remember the specs on this. The driver was a buckpuck model #03023-D-E 1000p..so a 1000mA with a pot. The battery ended up being a 14.4v lithium Ion with protection, and it was 2600 mAh - if I remember correctly. I can't remember how I came up with this, and how to figure out how long it would last.
There was a bunch of math involved.
If anybody could help me understand this again, I would be greatful.
I have another idea to build, but I'm not sure how to pick my components because I can't remember how to figure everything. I want to build a very small light with possibly one cell, for instance a 18650 or smaller. I want the light to be pretty bright, and have enough power to run for 30 minutes or so. I'd also like for it to have modes, the two I am most interested in are strobe and steady.
I'm not sure if one 18650 is enough to power a decent bright LED for 30 minutes or so. I guess what I want is as small as possible, as bright as possible, and able to run for 30 minutes or so.
also, this particular light will be like a flashlight, the battery will be self contained.
For what it's worth, I asked pretty much this same question on CPF and I've had no replies. Hoping you guys can help.
Some of you may remember me coming in to this forum a few years ago and building a little light. I have it as my avatar picture now and here is another pic-
I have a dilemma and I was hoping some of you may be able to help me with this. I built this light with help from many of you here, as well as some people on candlepower forums. I'm not sure what happened, but I got sidetracked with this and have wanted to pick back up and build more lights for some time. I've been very busy with life and work and have not had a chance until now.
I had compiled a lot of notes and info on how to do things, and I can't find any of it. I have checked PM's and threads on here and candlepower and I don't have any of it.
anyway, one of the most important pieces of information I had was how to calculate drivers and battery specs. somebody explained this to me beautifully, and I have lost that info.
for example, the first light I built was made with a cree XPG 3-up star. I can't remember the specs on this. The driver was a buckpuck model #03023-D-E 1000p..so a 1000mA with a pot. The battery ended up being a 14.4v lithium Ion with protection, and it was 2600 mAh - if I remember correctly. I can't remember how I came up with this, and how to figure out how long it would last.
There was a bunch of math involved.
If anybody could help me understand this again, I would be greatful.
I have another idea to build, but I'm not sure how to pick my components because I can't remember how to figure everything. I want to build a very small light with possibly one cell, for instance a 18650 or smaller. I want the light to be pretty bright, and have enough power to run for 30 minutes or so. I'd also like for it to have modes, the two I am most interested in are strobe and steady.
I'm not sure if one 18650 is enough to power a decent bright LED for 30 minutes or so. I guess what I want is as small as possible, as bright as possible, and able to run for 30 minutes or so.
also, this particular light will be like a flashlight, the battery will be self contained.
For what it's worth, I asked pretty much this same question on CPF and I've had no replies. Hoping you guys can help.
