That looks really great Linus 
To bad it has an slight OP finish, i hope it doesn’t limit throw to much.
Cool about that anti green coating, that could fit great with the newly released XM-L2 U4 1C dedomed, i was worried it could get very green dedomed.
I received 3 Grey Courui’s yesterday, and one will not turn on, the same batteries powered up the other two, so I think the driver is bad, possibly the switch? I’m dealing with GearBest now, let’s see how it will be handled? The lights(all 3) are typically dirty inside and out. The reflectors show pitting but it looks like it was there before the Vap Coating was applied. GearBest order #WW1504201453507112. Out of the 6 I have got recently, really only one was what I would call very good?
I haven’t seen a gray one yet, but I also get the feeling that the quality of the recent batches from Gearbest is on a general downward trend.
The latest black one I received had some generally sharper/rougher machining on the battery tube and worn anodizing on parts of the knurling. The head and reflector also shows signs of being of a lower general quality though no hazing this time.
Anodizing colour is also inconsistent between the last two I ordered, one is a deep black and the more recent one slightly gray.
GearBest has come thru on this by sending another light for $6.00 for shipping, thanks GearBest! Hopefully this one will be clean and working? Thanks Angelia!!!
New, great mod contribution for 625 Kcd, by FmC:
Courui + 86mm KD reflector + camera parts; Say Cheese!! Courui + 86mm KD reflector + camera parts; Say Cheese!!
Another great mod contribution of the Courui DO1 has been added by member Cula:
Courui D01 mod - my way (picture heavy) (this thread now added in the op)
my courui arrived with newer version which has 2 r010 resistor ? shall i short both of them ?
The last couple I have received have the whole board populated like that.
Just do the one at 6 o'clock in your picture.
Mine too the old one was empty no components at all, shel I now remove them all ???
thank you.
No reason to remove them, unless you needed to use a component for something else.
My last mode with all springs bridged and R200 removed was pushing 4+A to the LED, what if I dont see that power with all these on board. I mean there is a lot more chips that I dont know, what are they purpose?
I'm guessing it's a generic driver that's used in other lights as well as the Courui.
The other circuit is not used. There's nothing hooked up to it.
after a while i got 2 moon light modes ,driver died ?
How's the clearance between the bottom of the reflector & the LED wires?
i did test it ,without reflector just the led and pcb
Led on DTP copper board?
Do you have another Led to test?
the led works fine ,i tested by making the driver “direct drive”.
i started replacing parts from the other side of the driver since this new version has double the staff and when i replace those 3 leg in red ,driver works now,i also removed that blue big thing shall i add it back ? whats is its purpose ?
Those small fets in the red square seem to be the weakest link in this driver. A lot of people have found that out by accidentally shorting out the reflector. I'm not sure what happened in your case, but it's good that the driver now comes with spares :)
I think the toroid (choke?) is used to smooth out the power.
i c , thanks , i just finished the flashlifht now with dedomed xp-g2 S4 and its really monster .
what is the model of those fets ?any place i can order a few ,prefer ebay.