That’s a really cool mod, Djozz.
Do you think slicing the clear phosphor around the led die at the base would improve anything? In the same way that DBcustom, Zozzv6 and others did it to sliced XHP’s and other similar cree led’s? Any benefit to doing that when nichia slicing or no? Thanks
It would help somewhat indeed, but the closer you shave it to the phosfor the less difference it makes (light can enter the side more difficult then).
Hallo modders.Question-i would like to get the smallest flashlights for one 21700 or 18650 usb but with old dead MTG-2 led.Of course,with maximum output…Do you have any idea for host? Thanks:)
Easy answer- S2+ and S21A with boost driver. But heat would be an issue with more than 15 seconds on turbo.
Danke schon:)
Every now and then a non flashlight related post finds it’s way into this thread… Here is another.
I got a Mavic 2 pro as my first drone last year but it’s a bit of a hassle getting out to fly it as I live in an apartment. It’s also a little too expensive to learn how to fly a drone with, already crashed it once into a tree, so I tried simulator software but my old laptop couldn’t handle the graphics. Instead of upgrading the laptop I went and got myself one of those real cheapo mini drones just to learn how to control a drone from my couch. Man have I crashed it! Durable little sucker, props and prop guards flying everywhere, just stick ’em back on and it’s ready for more abuse. However, running around after it in my apartment is annoying. I have goggles for my Mavic 2 so I want to fly with goggles indoor too. What to do? I want to stick a little camera on it but these little suckers fly really bad when weight is added, I already tried a larger battery.
It weights in at at 52.5 grams with the battery.
I bought a cheap little camera, I also bought some compatible cheapo goggles that has detachable screen.
So I had to shed about 4 grams of this thing… I hacked it up pretty good, removing useless joke camera and wifi transmitter it came with, a LED and a whole bunch of the plastic frame:
I soldered on cables with connections to the battery poles on the main board and taped down the camera and tx board. Antenna is sticking out in the front, might move it later as it’s in frame but it’ll do for now. And whatta ya know, it ended up 0.3 of a gram lighter:
So it’s ready to go and get all bashed up again! I just hope the camera holds up, I don’t care much about the drone itself, it’s has long since passed what I expected of it and I have a few more lined up to take it’s place. The camera I can move to the next drone in line when this one has had enough. I did get a spare camera too, just in case.
Test flight tomorrow, can’t do it now as my girlfriend as asleep.
Sounds like you are having fun! Nice hack. 
Nice mod…Please,which driver was used? And-is it for two 18350 or one 18650?
Fantastic work, DJozz! I love it. I passed on the E10 because I just hate that really cold tint. That sliced Nichia really hits the sweet spot. Were you expecting this outcome or had you been able to calculate these expected values prior to the mod?
And what a great tool idea, something that would come in handy with removing some Olight bezels as well (I tried in vain to use non-slip pads and got no joy).
Awesome work! I’d been wondering if anyone had come up with an “upgrade kit” for lesser drones. Looks like you’ve got the essentials of just that. Must be quite an asset in helping you to learn better drone navigation skills.
Yeah, there fun little things. I’m surprised how durable they are.
Great for real beginners like me. I would not have wanted to treat a more expensive drone the way I’ve treated this one! The camera can rather easily be moved but to keep weight down on these real cheapo things they have to be hacked up pretty good.
I made another… same weight as the the other before cutting it up:
I cut this this one up even more and managed to lower overall weight with 1.2 grams.
Nothing ground breaking but something new to entertain me :) ...
It's been a while that I've done some emitter/driver swaps. This is a triple host swap. The main
reason for this is to get rid of the XH-P 50 doughnut hole beam in the L2, and the 6V Zener FET driver had to go
with it. I've also found that with 2x 26650s, this older LED is overdriven by the MTN 17mm. The solution is to use the
Guppydrv Rev. 2 group 12, at no more than 70% or lesser batteries. There are Carclo single emitter TIRs to fix the
doughnut and I have a number of S21As. I used a clear TIR, at first, but the beam is better with a 'sanded' TIR.
I want an SFT40 but until I order one, the next best thing I have in inventory is an SST40 for the L2. My MTN 20mm
Crescendo driver makes for a simple yet interesting thrower interface. Who wants anything but 100% in a thrower anyway? 
The Utilitech 3C has a great reflector with very good throw, similar to the L2 and the XP-L HI won't be
too hot for the plastic reflector.
After the swaps:
This has been a great throwy host that just about handles it all. I've had it in the vehicle with Li AA primaries, and can be setup
for a 21700 or an 18650.
.Lep in 600mm lens at the moment without Wavien
No data at the moment,
cause rainy and snowy and windy
You cant measure at 10 meter (200 KLux)
cause Luxmeter shows overload
COB is another project .
Regards Xandre
SFT40 in an EC01… not a success 
First the small screw preventing the mcpcb from rotating was in the way. Not a major issue though.
But I forgot to take the OP reflector into account, stupid… I don’t even know what to call this, except the word iris comes to mind.
Next up: try again, but then reflow the emitter to an Astrolux FT03 that I have lying around. But that’s for another day!
I tinkered a bit with Convoy’s 12V 2,5A GT-FC40 driver. I changed it to 6V output and adjusted boost converters input limit to higher value. It was limited to 10A, but MP3431 boost converter should handle higher. I also changed bigger 1R5 valued inductor to it from broken Convoy driver. With 6,7 mOhm current sense resistor mine gives an output of 6,2A and draws 12A from battery. This with battery voltage of 4,1.
Nice driver modding Haukkeli
One 21700 and boost driver from Simon.
ok,but its stock driver there?