What did you mod today?

Flashlight Modding and DIY Parts
4375

I’m using the Attiny841 in my driver which has plenty of i/o pins.

This driver is actually a 7 channel driver:
7135 + FET to white LED (s) = 2 channels, both with PWM,
one D882 transistor to each color LED = 3 channels, all with PWM,
2 resistors, each from a dedicated i/o port to cathode of white LED and 1st color LED = 2 channels.

And there are still unused i/o pins with connector pads available, could even make this driver a 10 channel driver (for instance I could connect more pins with resistors to the white LEDs which allows different levels of pwm free low moon).

In my D4 with white LEDs only 4 channels are used: 7135 + FET, 1 resistor channel to the white LEDs and the other resistor channel is misused for the green indicator LED under the optic (see my earlier post).

For the ultra low moon mode I activate the i/o port connected to the white LED (without pwm) and make the mcu sleep. It was a bit tricky to integrate this function into normal ramping but it’s working pretty well now.

Usage is easy - I just ramp down until the light blinks (when it reaches the lowest “normal” pwm level) and hold the momentary for half a second more.

4376

Changed the Sofirn SF10B emitter to XP-L2…nothing else. The stock XP-G2 pulls 1.6A at the tail. New setup pulls 2.4A.

4377

Thanks Flashy Mike for the explanation. That’s a very capable driver. Does it have a voltage divider for battery voltage sensing?

4378

I like the little Sofirn SF10B, very neat miniature of the larger SP32A… I had put an XP-L2 in mine then went back and sliced it, diced the phosphor off the sides, even more enjoyable now. :smiley:

Got my Sofirn C8F side switch hosts in today, built one up with XP-L2 V6 5000K emitters and an 17mm MTNFET driver built from scratch with a VishayDale SIR404DP. Used 22 ga wires to the MCPCB but 20ga spring bypasses. It pulls over 12A at the tail and makes 4116 lumens, pretty sweet! :slight_smile:

4379

Leatherman Tread Flashlight Bit :smiley:

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4380

That is ridiculously cool!!

Nice work.

4381

So, how do you light it on ?

4382

If you see the small check out of the back corner of the unit, well there is a corresponding piece of copper press fitted into the leatherman segment so you push the LED unit back into the body until it makes contact and push it from the back to turn it off, like a slide switch. It’s held in by friction. Doesn’t look too bright in the pictures as I need new cells.

4383

CRX - this is getting out of hand…. :smiley:

:+1: :beer:

4384

:smiley:

4385

8) 8) :sunglasses:
I do not respond to all of your mods (soo many), but I do think they are all outstanding. But this one is extra cool because it fits so well in what a multitool must be.

4386

Awesome build, CRX!
What do you think of adding elements with color LEDs?

4387

Thanks mate :beer:

Thanks. Yeah I’ve been thinking about how to do an unobtrusive light on the tread for a while, the problem was always the cells.
These two SR364’s are in series, which was the hardest part, check out my first attempt with an XP-G2 :laughing:

Can be cool, your D4 colour mods are great :+1:
I think the last colour mod I did was the dual DQG Hobi amber

4388

Pls crx go away. Your mods are way too awesome! :smiley:

Seriously, very impressive! What you can come up with and make.

4389

Same here. :slight_smile:
Great job CRX.

4390

:beer:

4391

They say great minds think alike. :stuck_out_tongue:

4392

The mcu can measure voltage internally. Voltage divider would be required for multicell serial setups though, which is not the target for this driver. It’s mainly designed for multicolor lights.

4393

:open_mouth: Unbelievable, this is way too crazy cool as with all your mods …

:wink: :+1:

4394

I didn’t even know such a thing existed, and here you are modifying it! Sweeeeeet! :smiley:

MRsDNF, if great minds think alike that leaves you… where, exactly? :stuck_out_tongue: (you know good and well you left that wide open!)