Prototype off-road/boating spotlight - King COB!

252 posts / 0 new
Last post
BlueSwordM
BlueSwordM's picture
Online
Last seen: 10 min ago
Joined: 11/29/2017 - 12:34
Posts: 5335
Location: Canada

And 50V DC isn’t really dangerous with dry skin.

24V DC on the tongue hurts a lot though.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

BlueSwordM wrote:
Uhh I wouldn’t really say destroying it in efficiency.

Look at the minimum lumen numbers at 85C of the CXB3590 90CRI 3500k vs Vero SE 3500k R9050:

CXB3590 4000k: 10000 lumens
Vero SE 4000k: 9771 lumens

The Bridgelux seems to have some headroom as it can be driven to 4.2A.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

DC scares me far more than AC since DC will lock up your muscles and just fry you.

Yeah, lipos will do 2000-3000A for a millisecond or two and make connectors not exist anymore. I mainly use AS150s as they last forever and you can re-use them. Do you fly r/c? I started flying helis back around 2007 and these days you could say I’m a “drone engineer”.

I was looking at the 5000k 80cri since that’s good enough light for me. Still apples to apples, they’re just higher color temp apples.

If you only want 9k lumens, a 5000k 80cri CXB3590 will do that at 50w and 182lm/w

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

About 15 years ago I was involved in a car wash installation – my friend and I did the concrete, and installed the stainless steel wall panels and interior trim. Got the job from an electrician friend. He was hooking up the main panel, which was something like 480V, 3-phase. He accidentally grounded the screwdriver. I saw the entire shank basically sublimate before our eyes. Pretty scary stuff!

My brother and I fly used to be into drones; but it’s a lot easier to just buy them now than build one and pray it doesn’t come down in a fiery crash. DJI makes drones far better than my brother and I so that’s what we fly now. Cheaper than the trial-and-error approach. So have a bunch of these LiPos laying around and I nurse them like pet rocks, so might as well put them to use.

80CRI is good enough for me; but I do normally prefer a whiter white.

I don’t think I’ll be satisfied with only 9000 lumens however.

AlexGT
AlexGT's picture
Offline
Last seen: 15 hours 21 min ago
Joined: 06/07/2012 - 17:39
Posts: 4352
Location: Texas

Have you seen this liquid cooled COB project?

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

AlexGT wrote:
Have you seen this liquid cooled COB project?

Seen that for a while now… Not sure if I want to go the liquid cooled route, but not ruling it out.

BlueSwordM
BlueSwordM's picture
Online
Last seen: 10 min ago
Joined: 11/29/2017 - 12:34
Posts: 5335
Location: Canada

The thing is, it may use 1600W of power, but it’s using inefficient low binned Chinese COBs that can only output 6000 lumens at 100W, and it’s not taking into consideration the inefficiency of using such a lens design vs a reflector/large TIR.

Meaning, rather than outputting 160k lumens, it’s outputting 96 000 lumens at most with perfect optics.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

I think it’s cooler to have a single high-power COB cranked to the max in a portable format than 16 underperforming cheap COBs other than to pose. Now, if each one was individually addressable with something like Raspberry Pi, and he could do light patterns/individual dimming, THAT would have been cool.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

Heh. I hate DJI. My latest aircraft outperforms almost everything else out there but it isn’t cheap… or small.

A friend of mine flies a heli I designed for him and he gets work others can’t because he doesn’t have a DJI. It also doesn’t hurt that he flies with an A7R and a Black Magic Cinema 4k.

AlexGT
AlexGT's picture
Offline
Last seen: 15 hours 21 min ago
Joined: 06/07/2012 - 17:39
Posts: 4352
Location: Texas

The focus of the video really was the water cooling solution for the heat… Wink

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

prototype3a wrote:
Heh. I hate DJI. My latest aircraft outperforms almost everything else out there but it isn’t cheap… or small.

A friend of mine flies a heli I designed for him and he gets work others can’t because he doesn’t have a DJI. It also doesn’t hurt that he flies with an A7R and a Black Magic Cinema 4k.

Yeah, I just don’t have the time I used to for making a frame, buying all the components, testing and assembling, testing some more, etc. I’m not the biggest DJI fan but I spend more time now flying than at my bench. One day I’ll get back into it.

Also, being within 20 miles from four airports, one international, means I have to travel far to fly a big drone. On the contrary, I send my Mavic Pro on stealth missions quite regularly LOLOL… now if only it could lift my COB cannon…

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York
AlexGT wrote:
The focus of the video really was the water cooling solution for the heat… Wink

Yeah it remains an option, but for me with a single COB it’s probably overkill. Heck even with his setup, he could have taken four heatsink extrusions and two large fans, and it’d probably cooled better. Also just because he puts 16 100W COB LED modules, doesn’t mean he’s pulling 1600W of power. Judging from the video alone, my AceBeam X80 looks just as bright, at least for 1 minute, and I can hold it easily with one hand. Now if I could just install water-cooling on that!

Just saying that radiator does not look like it would dissipate all that heat for too long before his cooling system gets overwhelmed.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

I’m trying to find someone to help design a more powerful driver and also looking into possibly designing it myself.

On the other hand, there are a lot of cheap “1800w” boost drivers out there from china that could be used if you didn’t want adjustable output or other “features”. I may get one just to play with since I don’t really have any other way to test things portably. I also feel better getting something “rated” for far more than I need given the nature of boost electronics and marketing “ratings”.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

Yeah, there’s no way that tiny little radiator would keep 1600w cool. He’s mainly using the thermal mass of the water and the radiator probably just slowly cools it back down after a short run.

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

prototype3a wrote:
I’m trying to find someone to help design a more powerful driver and also looking into possibly designing it myself.

On the other hand, there are a lot of cheap “1800w” boost drivers out there from china that could be used if you didn’t want adjustable output or other “features”. I may get one just to play with since I don’t really have any other way to test things portably. I also feel better getting something “rated” for far more than I need given the nature of boost electronics and marketing “ratings”.

I found a cheap 900W boost driver to screw around with as well. I just need more battery!

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

The white plastic LEDiL “reflector” isn’t much of a reflector as a lot of light actually punches through the plastic.

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York
prototype3a wrote:
The white plastic LEDiL “reflector” isn’t much of a reflector as a lot of light actually punches through the plastic.

More of a “diffuser…”

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

LOL at 2A (11k lm OTF) with the F13402 ANGELINA-W it’s brighter than the street light outside. I really need a way to play with this thing running off batteries. I just moved my power supply to the garage and pointed it out the door. Big Smile

There are a few gaps in the Ideal clamp parts that the reflector clips into which I find annoying.

The giant pin heatsink I got from RapidLEDs is actually bigger than the inside of the battle lantern.

I wouldn’t mind a slightly tighter beam. I need to get an F13401_ANGELINA-M “30degree” since with the big CXB3590 it will actually produce a 54degree beam which I think will yield a bit more margin on me not blinding my wife by accident.

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

prototype3a wrote:
LOL at 2A (11k lm OTF) with the F13402 ANGELINA-W it’s brighter than the street light outside. I really need a way to play with this thing running off batteries. I just moved my power supply to the garage and pointed it out the door. Big Smile

There are a few gaps in the Ideal clamp parts that the reflector clips into which I find annoying.

The giant pin heatsink I got from RapidLEDs is actually bigger than the inside of the battle lantern.

I wouldn’t mind a slightly tighter beam. I need to get an F13401_ANGELINA-M “30degree” since with the big CXB3590 it will actually produce a 54degree beam which I think will yield a bit more margin on me not blinding my wife by accident.

I found the Stratus LED reflector does a good job of making a slightly tighter beam… but it’s not exactly plug and play with the 3590

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

IIRC, I don’t have room for the Stratus LED reflector in the Battle Lantern.

For the CMA3090, the LEDiL Molly series is interesting. Middle of the road optical efficiency (86-89%) but honestly, nice beam profiles and pretty darn compact.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

Looks like I was wrong about Bridgelux VeroSE. Their specs are all over the place depending on which exact LED you’re looking at. I found one that I’m working up a spreadsheet for…

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

They have some Vero29 series that’ll do 40k lumens at ~250w! Some of the LEDiL reflectors don’t look all too bad either.

C12598_LENINA-M looks pretty decent. With the giant 29mm die some of these reflectors make some really wonky beams.

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

prototype3a wrote:
They have some Vero29 series that’ll do 40k lumens at ~250w! Some of the LEDiL reflectors don’t look all too bad either.

C12598_LENINA-M looks pretty decent. With the giant 29mm die some of these reflectors make some really wonky beams.

That is cool… But I’m having a hard time getiing 160W with batteries!!! For a wired light however that seems pretty good.

What I find amazing is how tight the beam can supposedly be with some COBs. Yeah with some of the larger comes it would seem they’d make a donut hole at enough distance. Or more likely that using the base, the COB is not optimally focused with the reflector.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA
LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

prototype3a wrote:
https://www.banggood.com/RUIDENG-DPH5005-Buck-boost-Converter-Constant-V...

10A max input current

https://www.ebay.com/itm/New-900W-15A-DC-Boost-Converter-8-60V-To-10-120...LED-Solar-/252509996545

Under $20… this is the one I got, at that price it’s good to putz around with…

BlueSwordM
BlueSwordM's picture
Online
Last seen: 10 min ago
Joined: 11/29/2017 - 12:34
Posts: 5335
Location: Canada

@LouieAtienze, what do you mean your cells can’t keep up at 160W?

4×18650s lights can keep up quite well at 200W, and even higher for 15-20A cells.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

Looking at yours again, I much like the mobile app control and LCD display. I may have to get one now when I have more discretionary cash…

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

BlueSwordM wrote:
@LouieAtienze, what do you mean your cells can’t keep up at 160W?

4×18650s lights can keep up quite well at 200W, and even higher for 15-20A cells.

Well, I’d like the boost converter to run somewhat efficiently, and I don’t know if I want to spend any more cash for decent 18650s… Especially when I have all these LiPos sitting around from my DIY drone days (which really was not that long ago hehehe.) Maybe not too bad for a 36V COB, but for 48V @ 3.6A I’m not so sure how efficient the boost converter will be working then – I could be wrong. The other thing is capacity – I have 5200mAh, 7500mAh LiPos already. I just don’t want to spend too much more than necessary on this project, so trying to work with what I have. I also don’t want to kill my good 18650s – I save those for my flashlights. These could be handheld, but I would consider them to me more of a “portable outdoor lighting solution” that I can run on max for more than a few minutes. Unless you happen to know of an LED boost driver that will work. I have a TaskLED HyperBoost, and I’ve seen Matt VoB light a 3590 in a GT with it, but he used 8 18650s in series by modding the carriers from parallel to series.

LouieAtienza
Offline
Last seen: 5 months 1 week ago
Joined: 11/17/2018 - 15:15
Posts: 593
Location: New York

I found these on Alibaba… $20 with aluminum housing. The shipping is a bit high, but I ordered a couple anyway 10deg. FWHM

https://kunruigx.en.alibaba.com/product/60722117312-806716086/100_watt_1...

If this works out, it’ll save me a bit of engineering a housing and lens for a reflector…

Looking at their Alibaba page, they have some really cool light modules as well.

prototype3a
Offline
Last seen: 2 days 22 hours ago
Joined: 12/19/2018 - 20:06
Posts: 251
Location: Christiansburg, VA

That’s pretty darn cool if I’m reading this right.

I need to figure out how to post images here. I got a mechanical model for the LEDiL Angelina reflectors so I’ve been plugging away at drawing the required custom components.

Pages