my 100 watt flashlight build - Page 1
Forum section: electronics / projects

author: firehopper
author_rank: Frequent Contributor
timestamp: March 07, 2016, 08:12:02 am
content: I've been posting pictures on another forum with some info on my 100 watt led flashlight build, I'm using a 1967 105 mm howitzer shell as the case.http://budgetlightforum.com/node/43750

author: bseishen
author_rank: Contributor
timestamp: March 08, 2016, 06:58:34 pm
content: Cool build. I have a half completed one myself. Have you gave dimming circuit any thought? Also have you seen these?http://www.ebay.com/itm/221952988382Liable to catch fire the first time you use it thoug

author: station240
author_rank: Unknown
timestamp: March 08, 2016, 08:38:18 pm
content: Often plugging the description of these cheap Chinese DC-DC converters into google will yield a video review. Also pay attention to the size, if it's really tiny, it's certain to not be capable of the claimed output.

author: firehopper
author_rank: Frequent Contributor
timestamp: March 08, 2016, 11:52:03 pm
content: Quote from: bseishen on March 08, 2016, 06:58:34 pmI have a 100 watt one, and a 400 watt digital I might use. might see if I can get a analog 400 watt one,

author: ZeTeX
author_rank: Frequent Contributor
timestamp: March 09, 2016, 12:27:21 pm
content: That heatsink look rather small, what are the temps?

author: firehopper
author_rank: Frequent Contributor
timestamp: March 09, 2016, 10:22:58 pm
content: which heatsink?

author: joeqsmith
author_rank: Super Contributor
timestamp: March 10, 2016, 02:35:32 am
content: 8000LM, nice! Using the shell case is a bonus. Post some pictures of it once it's done.

author: firehopper
author_rank: Frequent Contributor
timestamp: March 10, 2016, 09:39:21 am
content: Quote from: joeqsmith on March 10, 2016, 02:35:32 amits a cheap Chinese led so actual lumen output is unsureI dont know why I picked a shell as the case but eh, It wasnt super expensive, $50 for a 1967 howitzer shell.. wanted brass but this one is steel, I can deal with itgonna use all flat head screws when I get some, I had some hex head ones lying around that I'm using for setup.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: March 10, 2016, 12:38:25 pm
content: Quote from: firehopper on March 09, 2016, 10:22:58 pmthe led your mounted on the heatsink, the heatsink looks rather small for such a high power ledI've seen someone using cpu copper pipe heatsink as a heatsink for the led.

author: firehopper
author_rank: Frequent Contributor
timestamp: March 10, 2016, 05:55:22 pm
content: its actually pretty large, and has quite a bit of heft to it. plus there will be forced air across it and the driver.

author: SeanB
author_rank: Super Contributor
timestamp: March 10, 2016, 06:09:04 pm
content: All I did was use the Intel heatsink and a 6W LED lamp, and then repurposed a wooden bedside lamp as a base for the shell. Could do with a polish, but the patina and the gun barrel markings look nice though, and it is a nice room light as is.

author: firehopper
author_rank: Frequent Contributor
timestamp: March 14, 2016, 06:54:20 pm
content: I just posted 3 more photos on that forum if anyone wants to see. tiny bit more progressneed to test the 400 watt controller to see if it comes back on at the settings that were used last..then I can go and start assembling it perhaps.