What is the result? Is Optics Suitable?
Lent out my light, still waiting to get it back.
I went out and used my D25 a couple nights ago while I applied crabgrass preventer to my nearly 1 acre. It lit up the yard nicely. And with it being mildly cool out, the temp regulation* helped keep things bright but still in check.
*Stock light does not have temp regulation… It gained that after my MCU swap
Was able to fit a couple of 60deg 17mm Yajiameis in mine. Had to sand down the diameter and base of the optics until they fit. Also swapped in some neutral white XML2s. Can’t remember exact tint but probably 4C.
~30 cm from white wall. Nice and floody
In preparation of my review of the D25 I noticed something odd about the beam profile. The spot is darker in the center, seems like a slight donuthole.
Could it be that this is the result of the overlay of two emitter beams, causing areas of erasure and amplification?
Thank you for your reply I also ordered the headlamp. Yesterday at Aliexpress for a great price - US $ 9.44.
Thanks. I ordered one as well. I wonder if it’s the exact same. Looks to be ,but the name is is d10 instead of d25
There are 3 of ’em listed, the D10 (1 emitter/lens), the D25 (2 emitters/lenses), and a zoomie (unno).
Wow, this is a good thread. I wish I had found it earlier.
Someone said earlier that the D25 and D10 had the same driver.
Here is Tom E’s stock D25 driver.
Here is Flail’s stock D10 driver.
Note the dot on the chip.
The pcb layout looks the same. Maybe these are different chips and the dot has a different meaning for each chip? I really don’t know.
Hhmm. The dot should always be pin #1. Maybe a batch of fake MCU got it reversed? Weird...
The U3 labeling is different - maybe the PCB design is different? My pic is not so good, look'n compared, shadows are hiding a couple things 
PCB part just under MCU (between MCU and FET Q1) is different as well. It would be nice to check PCD layout on the back side, but it look like divers are a bit different. I would rather expect the same MCU on both. Used FETs and resistors are different probably due to number of leds used, but I think that schematics might be the same for both. Maybe one of those is just an newer revision.
The pin on the upper right in the driver pics looks like it goes to Batt Neg on both drivers.
Tom’s D25
Flail’s D10
Different revisions
Uh oh. Glad you pointed this out, Jason. Glad I haven’t sent out too many MCU’s… they’ll need to check which version of the driver they have.
Here’s mine (D25) with the MCU removed. It appears to be the same layout as Tom_E’s
Have you guys seen how many names these things are sold under? It's crazy! Sofirn even sells them.
This one with a COB and USB charging looks interesting at under $4 shipped: https://www.aliexpress.com/item/Outdoor-camping-Portable-mini-XPE-COB-LED-Headlamp
FWIW, confirming that my D25 version that worked with your pre-flashed MCU was also - T02-A VER:03.
actually this headlamp is everywhere in China. 77outdoor purchased them to sell after tested by sofirn. That’s it.
Since the D25 has bad UI, I helped sofirn upgrade the model to make it a little bit different if not much better.
It called D25S with 2* SST40 leds 1200LM and different UI: click to turn on/off, press and hold to change brightness levels.
Will be available soon.
Maybe it still won’t be as good as you think it should be. But it’s more usable.
It officially claims 1200LM because the heat sink ability is not that good for more current. You guys can DIY it as you wish.
Sounds interesting Barry0892.
When you say “press and hold to change brightness levels” are the levels the traditional increments or is it stepless/ramping style level change?
Will you be able to extend deals to BLF, many of us do not participate on FB?
Does sound better, look forward to seeing it
Wellp, I just used my D25 about a half-hour ago. I still kinda warmed to the UI. It’s… different… but not necessarily bad.
Still, after also having played with my Q8 at length, and GTmicro today, and given that the D25 has an e-switch, it can very very very easily have the same UI as those.
Click to turn on, click to turn off.
Click’n’hold, or hold-when-on, to ramp up. Unclick then quickly click’n’hold to ramp back down. Unlike the micro, memorise the last level. Doubleclick for turbo. Etc., etc., etc.
Someone here can point you at the innards for the UI most people would want.
Build the D25 with that UI, and you’ll clean up, as no one will have anything like it.
Also, if at all possible, use TIR lenses instead of reflectors. Easy to swap to go from throw to flood and anywhere in-between.
The custom pcb for the LEDs is interesting (ie, 2 LEDs on 1 board), but 2 separate pcbs that “float” on thermal goop and are held in place by the TIRs would awesome.
if too many changes, why not design a new one?