Build your own Torch/Flashlight!

RE: Build your own Torch/Flashlight!

shabaz — Sun, 15 Oct 2017 01:19:41 GMT

Added documentation concerning the next iteration, called Flashlight 'B' to the main body of the blog post.

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RE: Build your own Torch/Flashlight!

shabaz — Fri, 16 Jun 2017 05:33:29 GMT

I made some progress with a dual XM-L2 design, I'm hoping this one is around 600 lumen ballpark, with just slightly more current consumption (perhaps 1.1A at 4.5V). This uses the TI LM3410X driver chip. There is also an 'Ext' port on the PCB for connecting up an Arduino or whatever in future, for providing dimming.

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For the LEDs, I've made a 3mm hole for soldering a copper rod, if it works then this is a super-cheap (and easy) way of getting the heat out.

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The rear is just copper, for a bit more cooling. The two side holes are for attaching the reflector (the same part number as mentioned before), it isn't designed for this LED, but it looks like the XM-L2 dies are at identical height to XP-E, and the angle for illumination spread is near-identical too. To make the reflector fit, the hole at the rear of it will need to be drilled to 5mm.

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RE: Build your own Torch/Flashlight!

shabaz — Thu, 15 Jun 2017 00:02:28 GMT

Schematic and parts list now added.

RE: Build your own Torch/Flashlight!

balearicdynamics — Wed, 14 Jun 2017 06:50:30 GMT

Nice project Shabaz! when we can enjoy a demo video, if possible?

Enrico

RE: Build your own Torch/Flashlight!

jw0752 — Wed, 14 Jun 2017 04:56:15 GMT

Hi Shabaz,

Nice project. Since we have DC to DC converters that approach 100% efficiency you would think we could come up with a more efficient electricity to light conversion so we could get away from the constant waste heat problem.

John