My new headlamp (driver challenge...)

Neat mod. I envy your soldering skills.

Nice idea :+1:

Well done. The extremes some go to. :+1:

very nice (in my best borat voice)

what type of pcb are you using there?
I have plenty (2000?) of 5730 LEDs and would love to do something with them :smiley:

I’d like some explenation on the pcb also. How did you fix it, cause on the pic it looks like + and - are shorted with solder ? I’m guessing the mid stroke of copper on pcb is - and the 2 outsides are +.

Cool mod tough. How do the COB LEDs compare to cree/nichia led in a mule setup?

The one with 6 of these LEDs on them was a XM-L board, the one with 8 (in the light) and the bare one were XP boards.
Some of them have that long centre pad (you say “mid stroke”), which is ideal for this purpose.
I just sanded off the masking paint.

:+1: Exactly.

They have practically no tint shift, so everything is the same tint, both in front of you and to the sides.
My other headlamp (which is starting to wear down a bit) has a single 219C and does have a little more yellow on the outer perimeter, even with diffusing optics.

Nice mod.

It looks like the plus and minus are shorted, but they must not be?

2000 ?! :smiley:
That’s 1 Kilowatt of LED power…. :disappointed:
I bought these some time ago:
http://www.ebay.com/itm/100-pcs-OSRAM-DURIS-E5-LED-4000K-CRI-95-HIGH-QUALITY-5630-5730-GW-JDSRS1-CC-0-5W-/282448446858
I really like them.
That shop has many more high CRI Osram LEDs by te way.

The centre pad is the minus. :wink:

Right, but it looks like you have solder going across all three pads.

Also, how is the UI? Edit: I saw you explained it some in the OP.

Yeah, it looks like it, but it’s not so.
There’s just very little space left when you put 8 of them on it.
In the picture with 6 on it you can see better.
So i soldered a jumper over the outer pads, where the red wire is soldered on to.

low, high, off. e-switch.
Long press for ramping. First long press increases, second long press decreases output, would be better if it decreased the first long press.
No ramping memory.
double click for strobe.
Not perfect, but no PWM. :+1:

(edit: Yeah i did explain in the OP :slight_smile: )

Well, i use a headlamp daily.
Together with my reading glasses it makes me see very well what i’m doing.
With external lighting there’s always shadows cast on the things i’m working on / with.

I’ve found a lens that fits (after some filing) too, to finish it off, but haven’t found a proper way to hold it in place yet.

Backlit?

My RJ02 glows red when charging and when in magic mode (wave on, wave off), and green when finished charging.

Maybe yours glows green after charging?

Very nice headlight build. I also love hi cri mule 18650 headlights. I’ve always used nichias. I’m not familiar with the emitters your using. They are cheap enough to experiment with some. Thanks for bringing these to my attention. What would you guesstimate the lumens on high is?

How good is the charger? Channel your inner HKJ and comment, does it stop charging when the cell is full, no ongoing trickle?

I’m not sure, but the little LED goes green when it’s fully charged.
Good question though.
I’ll have to (finally !) replace the fuse in my DMM and test this.

I really don’t know that…
Those LEDs are rated 0.5 Watts and 47 Lumen, but maybe it’s lower because these are high CRI.
But then again i’m using them on lower power than 0.5 Watts each, so they probably work a little more efficient, especially on the low mode (which seems to be without PWM).

No, just very green… :slight_smile:
Just your average old school green GITD switch boot.

OP updated, not good news…
No current regulation, so the driver sucks…
I did finish the thing by putting in a lens, maybe i’ll show you later.

Maybe i can replace the driver, didn’t get that part open yet…

EDIT:
I got it open.
It seems the driver and charging circuit are not on the same PCB so there’s hope… :stuck_out_tongue:
(No pics yet, camera battery is charging)