What did you mod today?

I recall from MtnElectronics that it's a 6V LED.

Well, the rated voltage can be gotten from the datasheet. They were made in 6, 9 and 36 volt versions. Cree states 3000 mA max , but is there an old thread where someone has torture tested one?

I have not searched

I have a Olight SR 51 modded with a fet driver zenner — 6v MTG2 — it hits in the 9-11 amp range — gets hot enough to cook a meal but the LED has held up for years

They can be 6V/9V/36V, iirr, depending how they’re wired internally. I think I got the 9V types.

Hang on…

Yeh. https://cree-led.com/products/xlamp-leds-arrays/xlamp-mt-g2-easywhite

So with the XHPs that are 12V or so, the driver might not be able to still regulate outside its designed-in voltage. Might not be able to hit high enough voltages for, say, 18V strings (let alone a 36V MT-G2), and might have issues trying to put out a too-low voltage at 9V, thinking it’s a short.

And a 5A driver would be Really Bad for a chip that can only handle 2A on the books but maybe 3A if well heat-sinked.

So… I don’t want to fry one of my precious stash with a driver that cooks it, or don’t want to waste it if the driver can’t put out a decent amount of current.

I wouldn’t want to torture ’em. At 18W, even at 100lm/W, that’s 1800lm, which ain’t bad at all.

Credit:djozz (obviously :beer: ) Nichia 144A series, an output test of a 6500K 70 CRI sample. Nov 7th: added a test of a 5700K R9050 version of the 144A

MTG2 can still hold its own. I have two 4000k installed in a K40M and a TF C10.

I have a few P0 5000k 6v emitters in my stash if anyone wants one

Note that MT-G2 is still available to buy :slight_smile:

BG has 2 pcs left (here),
or at INTL-Outdoor (can’t reach their site ATM)

Plenty at Ali

TLR-7 pistol light

Originally >5300K 65CRI unknown LED modded to SST-20 4000K FA3(?)

The original LED was larger die and more flood so as I suspected the beam got a slight ring in it up close but in use you cant tell. It’s now slightly more throw with high CRI.

FR4 board held down by T5 Torx screws

Before and After

Much improved! Where did you find those nice beefy tweezers? I’d love to have a pair like that.

Hozan P-887

I have 1 or 2 straight ones from them too, all excellent.

Tamiya 74047 HG is also good but slightly smaller and finer.

All can be found on Amazon sometimes in limited quantities.

Excellent, thank you! I know Hozan from their bicycle tools and a few other odds and ends…everything was top notch.

Swapped a 5700K SFT40 from Simon in my KR1 and this is a perfect combo!

I had to modify a gasket to make it fit, spent 2,5h sanding and only the 3rd one was exactly good.

The only thing is, when ramping down it goes so low, the LED switches off.
This means it makes it difficult to distuinguish whether it is switched on or off, which is very impractical.

For now, i switch it off before completely ramping down.

In Anduril you can change the floor level in ramp config. 7H when light is on.

Thanks for the tip, it has Anduril 1, so after some experimenting with the UI chart i managed to get it right now!

Does anyone know why some Convoy drivers have small empty pads marked with K? 12V 2,5A boost driver for example has those.

For an e-switch, so that the same board can be used for clicky or e-switch just by using the appropriate firmware.

Thanks, that’s what I thought. Now I’m intrigued to see what happens if I connect momentary switch to those without any firmware tweaks.

Just spent $48 on two pairs of tweezers…I’ve avoided pricey tweezers for years. I guess I shouldn’t feel too bad because it’s possible to spend that much or more on just one pair. lol

The Hozan PP100, straight with serrations. Tried to find the 103 with fatter tips but those were only overseas with high price and high shipping cost. Seems like right now everything Japan has much higher prices than just a year ago. I actually came out ahead ordering several items from Amazon Japan (and had shockingly fast cheap shipping as well, but not now). Good deal on some superfine hair tip Hakko, too.

https://www.amazon.com/gp/product/B07BRSVJ6M/

They will take a LOT of abuse. One of my pairs I hate to admit has been used to pry and unscrew pills dozens of times. I finally went too far and used it to unscrew one too many loctite pills and they also became misaligned so I just bent them back and relegated them to “rough” duty. Definitely not made for that but if you use them for regular tweezer duty I cant imagine you could ever wear them out in a lifetime.