SKILHUNT H03 H03R led headlamp release, 1200 LED lemens

Thanks for some more background Tom…

(1) Will NarsilM work on the traditional FET drivers, as mentioned above, running a Attiny85 instead of 25?

(2) What do you think is currently the best (lets just say most effecient, most versatile) FET driver, multi channel, also doing temperature control? I try to keep things simple and it would be great to standardize on a single driver design, different PCB sizes. That is, specifically for DD drivers.

(3) Did anything interesting happen on the buck driver side the past 6 months? I’m still struggling to get Richard’s 26mm MTN-MAX driver going. I started to communicate with him a few months ago to diagnose the issues, but I neglected to continue the conversation. Will try to pick it up with Richard again, soon.

Appreciated…

By the way, if I may give some comments on the Skilhunt H03. I got the H03 & H03R… and, I must say the H03 is as close as spot on (pardon the pun, hehe…) to me as a headlight can get, for now, if you take quality, features & price into account. The H03R has a too intense / small hotspot. The light distribution of the H03 is very nice and wide, how I believe a good headlamp should be. It has some good internals DTP MCPCB, U4 LED, nice clicky switch. It has nice features - pistol grip, pocket clip, comfortable headstrap, robust anodizing and a good standard UI, even though I’m not going to use it. If anybody would ask me for a headlight recommendation - definitely the Skilhund H03. Its really good…

Oh boy, not enough time to answer all in detail now.

I have one of these H03's but didn't have time to mod it yet, though I am using it as a headlamp on occasion. I have a fully modded H15 though - switch on top end, 14500 size, and love it! Awesome with NarsilM and the switch LED support. It still could be my favorite small EDC, though the OTR M3 is darn close.

For 85 upgrades from 25's, there's lots of board/driver designs out there that won't work well with the 85, barely work with a 25. DEL introduced circuit design changes that much improve the drivers for both 25's and 85's. 25's are dependent on components working on the edge or outside their spec's.

But NarsilM/85 do all the typical FET only, 7135 only, FET+1, and FET+1+bank support.

NarsilM has both configurable time and temp sensing output reduction, but doesn't regulate output back up when the light cools down.

Unfortunately Richard seems unconvinced with Narsil, and told me e-switch lights have a very low demand compared to power switch lights, so, he hasn't been willing to provide it, but truthfully, his board designs are somewhat outdated anyway - he hasn't been updating his designs based on all the new R&D results DEL has done. I can't explain it all, but I'm sure time wise, it's a huge task for Richard to take on, and be able to keep up with the tech. There's more complexities with e-switch lights, specially throwing in a switch LED, etc.

Thanks for commenting Tom. I’ll do some homework on what will work for me, need to catch up from my side. Regarding the headlights… For EDC purposes, I presume a smaller version is definitely better. I prefer the switch on the H03 as you can support the light with your thumb when clicking - the lights stays kind of stable compared to the side switch. But, thats just me… theres really many things thats makes the H03 so close to perfect for me. Appreciated…

I measured 15.9mm x 1.8mm but my caliber ain’t that accurate so 16mm x 2mm is probably right.

Different sizes in different batch. I have and 15*2 and 16*2 magnets.

My HO3 NW arrived today from gearbest sale a few weeks ago. Very impressive light, havent tried the headband yet, but so far so good, great output and tint.

was just curious about the turbo lumen specs, says 1200 on box and in manual description, but runtime charts in the same manual say 900 for 18650, and 1000 for 2xcr123’s, wondering what is correct? I’m guessing 1200 is the emitter lumens and 900/1000 is after it goes through the optic?

1200 LED lumens on box
1000/900 OTF

Mine gets around 900 lumens on turbo.

mine with Narsil driver about 1400-1500 OTF lumens

Wow pretty impressive. I’m gonna try the narsil driver you sent me with a xhp 50.2 .

is there a thread for assembly of the headband? feeling pretty stupid right about now and the manual is not helpful

Long piece goes around head, short goes from back to top of light mount.
You have to fold a portion of the band and squeeze it through the opening in the middle of the adjusters, from the underside.

Here’s a link to a partial view of the assembled headband:
http://www.skilhunt.com/wp-content/uploads/2018/01/3-1.jpg

Check the customer reviews on the following link, there are some users pictures of the assembled headband.
https://www.gearbest.com/led-flashlights/pp_391921.html

thanks i got the center strap with that pic, still working on the long band

Cool, think I got it now, for some reason I thought the darker color would be on exterior only, so was having trouble putting it together, but the pic helped, thanks again

I just received my H03, and directly placed a NRC18650B in it and tested it.
Directly I liked it. Nice even light to work with.
The headband I think is not super great, but works fine.
The magnatic tailcap is a heandy feature.

Oncoming weak I’l test the light during work (I work at dark places :stuck_out_tongue: ).

First impression: Great little light! (And yes, it is a small light!).

I assume that your head light has the Narsil ramping UI. Ramping would be amazing on this headlight.

Loving the H03 :heart_eyes: .

Now driving of to a problem with a heating boiler, glad I can use it again :).

I’l later post some review story of what I think working with it, bud so far…

I measured 1.5A max at tailcap with my H03, I assume that’s not enough to get 900/1000lumen?I’ve tried different high drain 18650 batteries, but all the same current

Edit: I got 2.2A with 2x cr123A @4V each… that’s 17W input vs 6W(4.1V*1.5A) with the 18650 batterie, or am I thinking wrong?

You should get about 3A with an 18650 for ~1000 lumens: XLamp® XM LEDs Archives - Cree LED
Are you using a clamp meter? A DMM will give you a lower reading, although I have no idea if it can reduce current down to 1.5A.