[in Design process] Astrolux FT 03 CC FET white flat driver

Flashlight Modding and DIY Parts
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reserved

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Interest List:

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Interested. Is this for the white flat 2 or 1? 2mm would make more sense.

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5A is for 1mm. The 2mm version need 9-10A

Lexel I am in for one but in parts kit version as my earlier driver orders. I maybe add some other drivers or aux led boards to my order.

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Interested

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1mm2 is 4A, the 2mm 7A near the max output peak, also considering temperature of flashlight after some time running

I hope driver does not get too hot on 7A will need to test that,
I hope the solder filled viases doing a good job on heat thransfer from FET to the Ground plane

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interested!

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Definitely interested. I have 3 of these light and would love to mod one for a little more throw just to show off to my friends.

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Interested!

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Lexel,
Where does one go to purchase drivers for other items that you have built?

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Will this include the usb charging ?

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Actual ready to sell items are in the different sales topics

if you found a fitting board just PM me

its designed to fit the original charging board
still transplanting it is not so easy those brass rods are a beast if you try just with an iron
I found out iron plus Hot air workst best

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the first prototype will get on my next board order within the next days
it will be usual 1 Oz copper to do first function tests and see if it fits the light flawless as I made manual measurements of the original driver

this will take about 3-4 weeks from China

also if thats done the final production board in 2 Oz will take also some time

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Hey Lexel,

I thought that you could already swap the white flats into the FT03 without any other mods.

I’m planning this mod for my DOA FT03 host I have kicking around. Can you help me understand what the need/benefit is of this?

I’ve never built a driver and I’m wondering if I would be able to simply salvage all the parts off the FT03 SST-40 driver and re-install them on this one?

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IIRC white flats start going “pop” at 5A and above; the stock FT03 driver hits ~9A on turbo (FET and all that).

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that would do it alright if that’s the case.

lol ok I want one. but how do I build an all new driver :person_facepalming:

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No idea, I’m just going to wait until it’s complete :wink: I still need to chip in to his gofundme.

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why there is LDO?, isn’t this is 1 cell flashlight?, you could use 2*26350, but it makes no sense to me

and btw, how can you controll current with MCU.

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why are people always thinking too much?
a LDO is just a thing that puts out a constant voltage it is not a magical 2S or 4S conversion part
on 2S/4S builds the cell voltage would be above 6V absolute maximum voltage rating of an Attiny MCU, so you need to bring the voltage down (z-diode or LDO)

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totally different story here it remains 1S—>3V driver(could be as well used for 2S—>6V LED)
the LDO is there because it is needed on a CC build
reason:
Attiny MCU puts out a PWM signal, the operation amp needs a DC level
so this PWM signal gets filtered to a DC signal using a low pass
if the MCU voltage is not stabilized then the CC set voltage would vary depending on battery charge(like 2.5A with emtpy battery and 4A with full)