What did you mod today?

Man, this is freaking annoying >:-#

- Took ordinary Nanjg 105 8xAMC driver

- added 4 more AMC chips, measured amps to led after every new chip
all good & working
gunked MCU side (where I soldered 4 additional AMC’s) with fujik thermal silicone glue,
I figured it might help with potential heat equalization…

  • assembled everything and it only works in max mode!!! what the!
    disassembled, removed fujik glue (painstaking toothpick work), tested it outside of the flashlight and it works, ok,
    put it back inside the flashlight and again, only max mode!!!
    unsoldered the led (XPL HI) hooked up with crocodile clips my testing triple XPG2 -> 3 modes work again, as they should (driver inside the flashlight)
    but when I connect LED inside the flashlight I only get max mode.
    Why does the LED when installed only works in max mode but outside the flashlight works as intended (3 modes), I guess it has something to do with negative connection that goes from the battery true flashlights body to the driver, maybe something on the driver is touching flashlights body and it shouldn’t…
    After 4 hours of tinkering I give up…

Short from LED- to GND is most likely. Check your emitter wires

Yep, sometimes the ledge the driver sits on is a bit wide, the negative lead touches right there at the pcb where it sits on the ledge in the light. Be sure it’s away from that ledge or file out a section for clearance.

I just finished swapping the driver in a dark gray Courui. XML2 (?) and Mountain SRK 7135 V2. Now it has seven modes. Excellent spot beam. Very impressive. I didn’t care much for this light overall but now it’s great. Like it very much. Nothing very special about this mod. Switch wires to sw+ and sw~~. L+ and L~~. Done. …although it does take quite a bit of sanding/filing to get from 46mm down to fit. About 1/8 inch or to the perferated holes. Nice driver. Smooth transition, hold button from off for turbo (7), good moon, even spacing, hold button down while on to reverse, single press forward. Major improvement. No need for pics. Standard Courui and MTN driver.

Reconfigured a cheap third hand to make a vertical soldering jig.

+1
Same thing happened to me. I assumed it was a dud driver but on close inspection realised that I had stripped too much insulation from one of the LED wires and it was shorting against the edge of the star.

Emitters swapping :

Workbench lighting : (note the ghetto reflector )

I’ve just finished a ebay srk .a alloy shelf from mrs dnf 3 x xpl hi ,and bypassed the resistors on the driver
works well
I also fitted a xpg dedomed to a convoy s4 host with a 2 mode fet driver

nice relaxing arvo.

Awesome. Looks like we have the same one…gonna have to do that to mine.

I just swapped the stock 5mm cold blueish white of my Nitecore Tube for a nice warm white high CRI LED :

Below are my S2+ with 4C tint and S2 with 1A tint (I think ?)
I’m really pleased with this tint !

Found the problem: for some reason negative contact on my brand new noctigon board was leaking to the ground meaning negative contact and ground are in short circuit and they should not be….
thanks for sugestions :beer:

Built up a Baked S2+ Triple . Built 2 S3’s. Swapped some drivers around. Dedomed 3 leds, including Xtar H02.

I gathered a bunch of stuff up and worked very hard to turn one of the last pieces of plain old pound cake into scrumptious strawberry short cake! Cool Whip included! I was so proud of myself! The top end was so pure white, gorgeous! Then I ate it. :wink:

Hint: Angel Food Cake is even better in this application :smiley:

Phil

Got some of the new XM-L2 U4 1A emitters in, on 20mm Noctigons. De-domed one, built an MTN FET driver with 4 modes (ATTiny13A and PSMN0R9) and used 20ga Turnigy leads, 20ga spring bypass in the tail, moved the OEM brass button over to the new driver from the Lucky Sun BLF Special Edition D80. With a fresh charged Efest Purple 35A 18650 flat top I’m seeing 5.23A at the tail on my UNI-T clamp meter and 1500.75 lumens from the de-domed emitter. Not bad!

21.08 lumens
169.74
482.66
1500.75

I also filed down and sanded smooth the EDC black centering ring. Applied Kapton tape on the bottom of the reflector just to be on the safe side. :wink:

Similar to DB but used the U4 1C on a 20mm Noct in an eagle eye x6. Replaced the faulty switch and tried an LDCH LD29. As above great throw and good color. It almost looks like a 1A cross B tint. White with a faint yellow ring.

A friend of mine wanted to have his little bike light repaired. Here in Holland we have those tiny 2xCR2032 5mm led bike lights that are strapped around the handle bars. His one went dead and it appeared just a bended battery contact. Bended it back and it works fine again. :slight_smile:

This was too easy so I left a souvenir inside…

The annoying rgb led is conquering the world!!!

:smiley:

Modified a KRONOS BLF Limited Edition Aluminum X5 into a Quad Nichia 219C, 2960.1 lumens out the front on Turbo, 0.24 lumens in moon.

I used a 1 1/2” dia 6061 bar stock to re-create the reflector into a heat sink for the quad mcpcb. On this one, I even threaded it so it screws in just like the OEM reflector does. Replicated the ramped shelf up top for the o-ring to maintain water proof specs as well. Very little difference in weight, a LOT of difference in output! The Bistro UI still works fine, so it has the police strobe and bicycle strobe in the hidden group. I used larger ga wires throughout, 20ga Turnigy including spring bypasses top and bottom.

Love it when a little light kicks butt! The AA size Efest purple IMR14500 is a really capable little cell, for sure.

A work of art for sure! Beautiful!