What did you mod today?

Last week I put together the Texas Avenger driver for my Small Sun ZY-T08 for an MT-G2 mod.

And today I started to modify the light to handle the heat. I have a 10mm thick copper piece. I cutted a circle from it to fit in the driver cavity.


Then from the remain material I made another circle and soldered together to double the thickness.


After that I cut out the led shelf from pill, and now I can put the led star directly on the copper.

I need to glue in the copper with some fujik, then flash the driver, and modify the switch board for series battery contact, put in the led and solder wires. Maybe at the weekend I have time to finish it.

Yesterday, Nitecore NU20 with magnets, clip and auxiliary red LED

Rechargeable Meteor

BLF 348 with a Tiny10DD.

Cool! I mean: Hot!

I posted this in DEL's OSHPark driver thread, but should have been done it here. Almost 3 years ago I modded a Yezl Y3 for my cousin's son who's into hunting. Frequently they are out before dawn and he wanted something powerful with some distance. I recommended the Y3 at the time. The original mod was a Nanjg nodded with a FET:

The switch eventaully gave out - didn't come loose, but internally there was no more spring action.

After it's all modded/cleaned up:

I did 2 boards. Will get to the 2nd some day:

I used Arctic Alumina epoxy to sure up the switch:

22 AWG bypass on the spring. I also applied some solder paste on one side of the LED+ pad, then the iron on the other - think the holes filled up well w/solder. The bypass is soldered to the pad with the thru holes, so minimum path to the LED wire:

Seems to be my favorite LED right now. A KD XPL2 V6 3B, on a KD 20 mm MCPCB. Used 22 AWG because didn't think I'd get the clearance with 20 AWG. This is an early model Y3, and has a 23 mm wide flat reflector base. Later models I have use a smaller flat surface and different centering piece. The new ones need the centering piece significantly trimmed, sanded down, then the MCPCB is too low,so have to use a copper shim to elevate it. This one did not require a shim:

Here's a better shot in my lightbox studio on the 2nd driver:

Assembled view of the LED, 2nd in moon mode:

The driver fit great, nice and snug with just a little filing. The results? Well, it's impressive:

On a LK @4.20V:

  • 8.9A at the tail (clamp meter) - wow!
  • 2,280 lumens @start, 2,150 @30 secs
  • 123 kcd measured at 5m (700 meters)

Originally, this light had a Nanjg jury rigged with a FET on it, and a XM-L2 U2 1A domed. This was from May 2014. Originally, this is what it did:

On a SONY 26650 fully charged (best performing cell at the time):

  • 5.3A at the tail (DMM w/heavy gauge leads)
  • 1,680 lumens @start, 1,600 @30 secs
  • 121 kcd measured at 5m (696 meters)

So it got a 34% bump in lumens @30 secs, barely measurable bump in throw. The XPL2's don't throw as well as the XPL or XML2 - I've seen this in couple of other mods.

Today I took some time to mod my second S2+.

Replaced glass with AR coated one.

Replaced OP reflector with SMO.

Replaced XML U2 with XPL HI V2-1A

Replaced 7135x6 3/5 mode with 7135x8 with biscotti firmware

Also replaced stock wires with better ones and black tailcap with blue.

Having problems with driver working too fast and almost impossible to program modes. Ordered tools needed for flashing so I will try to fix it when arrives.

Nice work on these Y3s’ drivers TomE :+1:

XXX-Man , the light is way better now , you should try a fet driver for max results (just sayin) :beer:

Did the mod go smoothly or was it hard to do?

It's perfect now (for me) :)

I think fet would be too much, it's hot in seconds on max now.

The programming hardware costed me below 7€, with the hex file its easy to flash when you follow the programming threads steps

Dont forget to cut leg 5 on the MCU first

Is the throw of razor blade dedomed XP-L2s that bad too? … compared to a dedomed XP-L or XM-L2?

Dunno from what I've done - never attempted it, but from what I understand - yes, it's a bump from stock, loses lumens, but not doubling kcd. I think the bump is 50% of lower in kcd.

More so than it should have been since Dale sent it to me already assembled. The awg22 wires barely fit through the pill but were simply to bulky for the driver to drop completely into place so I swapped them for 28 Teflon. After that it was straightforward. Rich has the same small springs and I renewed the thermal grease(AS-5) as well.

Put an e-switch in my 7xXPL Convoy L2 . I decided I really wanted ramping UI in this light. Inspired by the Thrunite TH20, which I recently purchased, with very nice ramping UI, and DB custom’s video of Toykeeper’s ramping FW on his L6, I took the plunge to finish learning how to flash FW.

FYI, I had to comment out the section in this FW (ramping_table_UI on toykeeper’s FW repository) about the red and green voltage indicating lights.

In the process of trying to flash FW to the driver, I fried the Zener diode. So I either had to get another Zener diode or an LDO from mtnelectronics. I don’t know if some of you are like this, but sometimes I really just want to finish the job, and this sometimes leads to “kludging”. I went to radioshack and got a ~5V Zener diode and wired it up.

The Zener diode is in the place where the capacitor was, and the capacitor is in the Zener diode spot. They are in parallel so it doesn’t matter, the large diode just fit better in this position.

I drilled a small hole through the driver cavity wall and wired up a small momentary switch. I mechanically reinforced the switch body-to-light connection with epoxy.

16mA parasitic drain with full batteries. Eventually I may wire up a LDO, but I’ll leave it for now; it has the tail switch to lock it out.

I just noticed the LEDs are very dimly lit when the light is off, but not locked out. My understanding is that the parasitic drain for lights with the Zener mod comes from current draining through the ~200 Ohm resistor and Zener diode to ground. So I don’t understand how the LEDs are getting the current.

Today I built out 2 Convoy S2+, one with a xp-l2 4000k v5 led w/ a ledil boom reflector (used a dremel to make it fit) and another with nichia 219C 4000k 90cri led w/ a tir lens (not sure where I got it from but it was in my parts bin). Nothing much to show except that I was pleasantly surprised by the distinct beams that they created, so I decided to post pics of the beams. Unfortunately, I only have my cell phone camera to take pictures with. The ledil reflector made a nice big hot spot, the picture shows a hot spot with 2 outer rings but when you see it in person it looks like one big hotspot and one outer ring. As for the tir lens, it has virtually no spill and the beam consists of a spot only.

the rings come from too much jpeg compression, saving at higher quality or RAW will show the real fading

Modified a nanjg105c today. Stacked 4 extra 7135’s for a total of 12. And swapped the attiny13a for a attiny25 with the desire to have temp regulation in a constant current driver. Using a Bistro, converted to a single channel. Bench tests are successful, but I still need to put it in a light to test thermal regulation.

I reflowed a 219c sw403 into a v2 HDS Clicky. The light had an XP-G in it so I didn’t even try to remove the emitter board, which is epoxied and potted into place. Instead I used my hot-air reflow unit to do the swap in-place. No issues, and the light is much improved.

Lumintop Tool Ti - lighted switch