What did you mod today?

This is not good :wink:
put on board so many of AMC.
better to put a quality FET for DD

Well with a FET the excess voltage gets burned in the LEDs, right? Maybe the driver will stay a lot cooler, but the 219Cā€™s will run nuclear in no time.

Some M22 moddings

wow you have so many M22

Im yet to own one :frowning:

Well, it will be the Olight modding month dude( at least for me)

That is some flashlight capital you have there Mitko, what is the mod? I notice that one reflector has a different finish :nerd_face:

@chouster: you can get the driver dissipate the heat of those 12 chips if you have a plan where it goes. What I do is for each stack connect the large lips of the chips facing the outside of the driver with a generous amount of solder (solder is a pretty good heat conductor!), and let that blob end right where the driverā€™s ground ring is clamped to the pill/body/retaining ring.

And I think that I remember that 7135 chips have an internal heat management and drop their current if they get too hot. Anybody confirm this?

M22 will be dedomed /w fet driver, the result is like 1700lumens and 90k cds, its some kind of a luxury X6 of some sort, the beam profile is virtualy the same yet the heat disipation/the host is ways better

M2X will be modded the same way, the result is 250k cds

M3X i apply only a modest driver mod( 5.5 amps at the emitter) and i pot/ heatsink the driver, its kind of a fragile one( from experience), several ot those M3X will be XPG2 moded ofc

Yeah thats the result of a EU Black friday :wink:

Party has started :smiley:

The solder connections on the big ground tabs is what I did. Iā€™ve read that about the AMC7135, someone confirmed this by testing but I canā€™t remember who it was. Problem with that is, there are many sources for those AMC7135 chips and we donā€™t know if every chip acts that way.

I am having the same problem in a triple 219C with the genuine Mountain driver. Will have to try this when I get time.

What did you use for a spacer?

Astrolux SC quad :

Spacer from kiriba-ru , Carclo 10622 optic , Nichia 219C 4000K CRI 90+ D240 leds and old dsche copper quad mcpcb .

Stock driver , with bypassed spring . Also added the second LED & Resistor in the tailcap PCB . Leds on mcpcb is soldered on the spacer and spacer inside the head too .

Unfortunately i donā€™t took pictures during the mod , i had my phone for repair .

But here are the results :

Pulls 12 Amps from the little Efest 14500 V2 650mAh :heart_eyes:

Edit 4/24 : Pictures fixed

I roughly cut two discs from a 3mm copper plate that I have. I then solder them together and drill a hole in the middle.

You modified the Blf-A6, a FET+1 firmware?
Iā€™m running a S2+ with 3x 219C and FET+1 (modified Blf-X6-driver) as EDC, of course it gets hot fast in turbo, but with a ā€œnot-too-highā€-drain cell like Sanyo 18650GA its really usable.

I noticed this behaviour with a 105D.

Yupp, but nothing major. To add the OTC I changed the OTC pin to be the one next to the GND pin, so that I can solder it across those two pins. Also brought Battcheck_VpT to this firmware a while ago.

I built this zener modded FET driver, using an Attiny13 from an old 105C type of driver (one without stars, mode group with/without blinkies sekected after a flash in low mode).
Long story short: I first tried to zener-mod (swapped the diode for a 220 Ohm resistor and soldered the zener parallel to C1) the BLF-A6 driver, zener-mod worked but the user interface was messed-up bigtime, then teied to zenermod a AK-47C but it did not work, probably because the circuitry is a bit different from the 105C. So for the third attempt I built the driver from the picture because I built that one before and it works, except that the low voltage warning kicks in at 3.5V.

I used this driver together with a (my only) Nichia 144A SM453 in a S8 type host, modded the tail section a bit to accomodate 2x 18350 batteries. The mod was succesful, got a bright working light!

I hoped for 3A but the voltage of the 144A is so low that on those two little cells it drawed 5.8A, way too much for this led on the non-DTP board, the output was way over max.

Before something went wrong I made these shots, first a lens projection of the die, then a beamshot from 2.5 meter to the wall. As can be seen the die looks fairly ok (much less ā€˜spiegeleiā€™ like some of the earlier samples), but the beam from the small OP reflector still has an unpleasant yellow hotspot. The perhaps bright side is: a distinct spot without donut hole.

I had to take the pictures on high setting to avoid pwm effects, and the 30 seconds on near 6A appeared too much, the led got too hot and died :frowning:

Exit 144A led, I was too careless. I will save this host+driver for a XHP50.2

There they are, not easy editing on a phone underway in the train :smiley:

Thank you!

Modified my Convoy S3 tail switch today