The 6th Annual BLF / Old Lumens - Handmade Entry - i42dk (FAIL)

CRX · 2018-09-25T21:56:51.000Z

Looks like fun :+1:

BlueSwordM · 2018-09-26T01:10:12.000Z

Looks really good.

I’m worried about one thing though.

Are you sure you should 9 cells in parallel in a direct drive config to only power 2 LEDs? Wouldn’t they release the magic smoke or something?

i42dk · 2018-09-26T13:54:46.000Z

BlueSwordM:

Looks really good.

I’m worried about one thing though.

Are you sure you should 9 cells in parallel in a direct drive config to only power 2 LEDs? Wouldn’t they release the magic smoke or something?

Thought about that yeah.
The cells that are going to power it, are salvaged 18650’s. They are used, and had 2200mAh when they were new. Now they can hold around 2000mAh.
I have no idea what chemistry they are, other than they are very low discharge. Also, all the wiring will add some resistance before the juice hits the LED.
But time will tell

Flashy_Mike · 2018-09-26T14:05:41.000Z

Impressive!
Is this going to be your next EDC?

i42dk · 2018-09-26T14:21:46.000Z

I’m gonna need some bigger pants then

Test fitting

~~Banana~~ C8 for scale

Phlogiston · 2018-09-26T14:29:32.000Z

You’re putting a mule light inside a translucent container to get a portable light panel with a very soft, diffuse light?

i42dk · 2018-09-26T15:04:13.000Z

Phlogiston:

You’re putting a mule light inside a translucent container to get a portable light panel with a very soft, diffuse light?

That’s the idea yea. It’s not a “lantern” as in to light up an area. But a box that gives off a soft ambient light. That’s also the reasoning behind the dual LED’s.
So I can choose warm yellow or more white light :sunglasses:

Phlogiston · 2018-09-26T15:24:41.000Z

Cool! I can definitely see uses for that.

Lightbringer · 2018-09-26T18:37:16.000Z

i42dk:

It’s not a “lantern” as in to light up an area. But a box that gives off a soft ambient light. That’s also the reasoning behind the dual LED’s.

Just don’t put the power switch on the bottom so that you’d have to lift up the whole thing just to turn it off. :laughing:

DavidEF · 2018-09-26T21:25:37.000Z

Phlogiston:

Cool! I can definitely see uses for that.

Yeah, me too! It makes me think of those balloon lights I’ve seen used for night-time road work in recent years. Those are VERY bright so they light up a huge working area, but produce almost no glare!

ToyKeeper · 2018-09-26T23:22:51.000Z

i42dk:

Todo:

Mechanism to change between each LED or have them both on

FWIW, the ‘lantern’ branch of Anduril supports tint mixing. You’d have to modify the driver though, or use a different one, to drive the LEDs independently and get equal amounts of power on both channels.

DBSAR · 2018-09-27T01:43:58.000Z

cool big lantern project will follow this one too.

gchart · 2018-09-27T03:34:04.000Z

Cool, good luck with the build!

2018: the year of the lantern… DBSAR must be in BLF heaven! :partying_face:

DBSAR · 2018-09-27T03:43:12.000Z

gchart:

Cool, good luck with the build!

2018: the year of the lantern… DBSAR must be in BLF heaven! :partying_face:

lol so much lantern projects this year

FmC · 2018-10-01T20:58:40.000Z

Good luck with the build!

Jerommel · 2018-11-04T20:34:40.000Z

FmC:

Good luck with the build!

What he said. ^

MRsDNF · 2018-11-04T21:03:43.000Z

Jerommel:

FmC:

Good luck with the build!

What he said. ^

And me to.

i42dk · 2018-12-01T08:41:30.000Z

Update: So I failed to complete the build, due to life. 40+ hour work weeks and prioritising my family left little to no time to this.
I will finish this eventually. Perhaps in a little different setup. I think an other driver is needed. Non FET ragulated e-switch driver thats built for just 1 emitter. Given my 9 x 18650 cell setup It’s 9 old used low discharge cells, but combined they will still be able to deliver 18A. A but much for 1-2 emitters in direct drive.

So I’m out of the voting. Till next time

Merry Christmas

MRsDNF · 2018-12-01T09:07:32.000Z

Looks like you have done the groundwork for a future project.
Thanks for joining in even if you did not finish.

FmC · 2018-12-01T10:39:22.000Z

It’s a pity the MOAL (Mother Of All Lanterns) was not finished!

Sometimes there’s just not enough time to spare for doing a big crazy build, when there are other priorities