CNQG Brass AA light

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ToyKeeper
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No, not yet… have been a little busy with other projects.

I’m hoping that a 14mm one-sided board will work, even if it’s just 1×7135 plus an attiny. That setup can get bright enough for my purposes (~120 lm), considering that most of my use is on moon, low, or medium.

Gunga
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That sounds good, too bad it can’t run AA though. Let me know if you build an extra!

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How about a FluPIC V2.2? I had an extra so decided to try it out in the Brass AA.

Well, it’s 14500 only, and is programmable. The low mode is decent, around 1 lumen, but the PWM is pretty low frequency.

It’s not the greatest but it’ll do for now. I was not a fan of the original circuit. The level spread was poor (7-100-200?), the memory mode was weird and somewhat unpredictable.

I’m hoping to find something more up to date at some point.

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Nice, it’s awesome that you successfully improved yours. Smile

I still haven’t really touched mine, aside from taking it apart and taking pictures. Picked out some candidates for possible drivers to use as a starting point. Thought about maybe getting the tools I’d need to assemble drivers. Decided this will probably be my new favorite light for a long time if I ever get it working.

But mostly I’ve just been doing other things.

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Yep, so:

- updated driver, programmable FluPIC v2.2 (14500 only)
- Nichia 219A LED swap
- DC Fix diffusion film

The light is much more usable now, but the UI is somewhat hokey (flashes after 1 second to indicate mode resets) and the PWM frequency is still too low, but it’s more functional than stock.

Yes, a fun little light. Cheap and nicely made brass. But MAN that circuit cavity is small! I couldn’t use the retaining ring, had to sold the circuit to the pill.

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Another update. Flupic has annoying pwm. Decided to use 15mm 5×7135 circuit from mtn electronics.

Only using 1×7135 to keep the battery side blank. Max around 80 lumens. 14500 only. Also had to carefully sand it down to 14mm.

Using Guppydrv. Nice firmware option, though moonlight is not low enough .

Found a good clip that fits too. From a Lumapower Edc lm31. A basic, decent AA light. Now I have a good circuit (too bad it’s 14500 only) and good clip. I’ll have have to strip and Polish the clip someday.

Coupled with a Nichia 219A, glow sticker and diffusion film, I’m pretty happy. Until a good AA circuit comes along that fits.

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Gunga wrote:
Decided to use 15mm 5×7135 circuit from mtn electronics.
… Only using 1×7135 to keep the battery side blank. Max around 80 lumens. 14500 only. Also had to carefully sand it down to 14mm.

Sweet! Does the retaining ring still fit, or is the driver too thick for that? Did you have to replace the driver spring with a solder blob?

Is that 80 lumens on an EagleTac scale? Normally I’d expect about 120 lm from a single 7135 chip plus Nichia 219, but that’s 120 selfbuilt lumens.

I didn’t think the 15mm driver would fit… but since it does, I may be getting a few very soon. Smile

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The driver is too thick, I ended up soldering it.

It didn’t come with a spring, I used a solder blob.

I’ll have to recheck the actual output. It’s a guess but I have not really tried estimating the output yet. I could be off.

I do have a spare driver. Bought two in case I screwed one up. Give me a shout before buying one.

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I have one of those drivers here, originally for testing in a D25A. However, I’d rather put a floating 12mm driver into the D25A so I can keep its original contact plate. That’s how it’s originally designed so it shouldn’t be too hard…

So, I wonder if I might be able to make the 15mm driver thinner around the edges. I think if I thin the outer edge of the battery side it shouldn’t break anything, and then I could still use the nice retaining ring. I plan on not soldering it because I prefer to be able to take it out easily for reflashing. On the LED side of the driver, I’m guessing the 7135’s big pin would be the main thing touching ground. Not a lot of contact area, but at only 350mA it probably doesn’t need much.

I have some bare 219Bs too, waiting for me to learn how to reflow emitters on the stove.

This seems do-able. A little delicate, but do-able. And if it works it’ll be one of the nicest items in my collection. This little brass host is one of my favorites. Smile

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Yep. All doable. Unsure about thinning the board but it’s worth a shot. Your firmware could make this awesome. Perhaps you can program an extra board?
Wink

My solder blob is very short. This light is a few mm too short. You can use imr 14500 but protected cells are likely too long.

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I should receive this AA brass light in a few days. I plan to replace the driver, but how deep is the driver cavity ?
I had hope that thje ReyLight pineapple driver would fit maybe ?

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I don’t have the light anymore. It’s a tiny cavity that only fits single layer drivers of 14mm or less. The ReyLight driver is too tall (double layer) and too wide (14.55mm). You could try filing down to 14mm but the ground ring on the ReyLight driver is VERY narrow. Doesn’t matter since it’s too tall.

It’s a nice, small light, but I think it’s actually too small. No space for modding etc.

epv
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What about MTN-15DDm? It’s single-sided, looks like it could be filed down to 14mm diameter, and the component side looks pretty low-profile. http://www.mtnelectronics.com/index.php?route=product/product&path=67&pr...

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I filed down a 5x amc7135 board from mtn to 14mm (it only had 1 chip and was reconfigured to be single sided). It fit. If that board can be filed to 14mm it should fit.

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In case anyone stumbles across this in the future, I tried both the MTN-15DDm and their FET15-SS which is fet-only. Neither are workable in this light. You'd have to sand off at least the entire ground ring around the circumference to get it to fit, including all the vias. (I got bare boards and actually sanded them down rather than destroying populated ones.) I'm considering laying out a very simple mcu+fet board for this as I don't care about 1.5v AA compatibility, I just want fast pwm and configurable modes.

 

See my update here -- pd68's 14mm fet+7135 layout on oshpark works well, even with a tiny85 crammed on:

http://budgetlightforum.com/comment/1090681#comment-1090681

 

 

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