Single 10440 RED LOC build

Leodahsan · Feb 8, 2011

Hey all, I'm DIM (doing it myself

) a new unit from a damaged laser from dealextreme, that had the annoying "1.3v threshold" boost driver and green module removed. I'll put something more interesting here.

I'll drive a reddie from a single 10440- The aixiz head fits perfectly the old host.
I'd like to get a 635 200mW diode, but it is out of question. I'll get a LPC.

Any ideas will be GREATLY appreciated.

Edit again: Just want to hear some "conveniences" on different configurations, or anything else. It is my first 'pen build'.

Pontiacg5 · Feb 8, 2011

Re: single AAA or single 10440?

Small hosts don't like powerful diodes.

A 10440 won't have short runtimes or be damaged by over discharging it if you set the driver low enough for the battery (and host heatsinking.) Just because you have a 2W blue diode or a 500mW blu diode doesn't mean you have to run it as such!

You're going to want to go with the 10440 here, I doubt a single AAA NiMH would be able to get a 445 above lasing threshold assuming you could find a 1.2V boost driver. Two AAA alkalines are not enough to run a 445 much higher than 200mW, and that's with a flexdrive.

Good luck with your build!

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

Thanks, Pontiacg5. You work on a machine shop, don't you? Maybe I'd need a heatsink (a very small one) for my amateur host. I don't know what color to choose but, maybe I'll get a reddie. The LOC gets a little hot, and I'll use only the part where the diodes sit (on aixiz module). Maybe a little disk of scrap aluminium or copper would be suitable, for 250mW LOC heatsinking. How much you think it would cost? Just a thought... you are busy with the arctic project.

(random pic found in google)

thats what it I'll use. The ending part of the aixiz module, without the "back tube".

Pontiacg5 · Feb 8, 2011

Re: single AAA or single 10440?

Are you sure you have room for an entire aixiz module? IIRC those 1 AAA green lasers use a 10mm diameter module. Not much room for a heatsink, or aixiz module, in there.

I usually can't do single heatsinks. By the time I set the CNC lathe and program it for one part I'd have to charge 50-60 bucks just to pay my boss for machine time.

You might ask Mohrenberg if he can make one....

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

The aixiz module don't fit. The only part that fits is the thread that the back barrel fits in. That thread will be used to fit on the host. The finish will look like the original one :beer:

about the heatsinks:
Oooh well too bad. 60 bucks is WAAAAY more than I was hoping to hear :O but thanks anyways! :beer:

edit: "You must spread some Reputation around before giving it to Pontiacg5 again."

Pontiacg5 · Feb 8, 2011

Re: single AAA or single 10440?

Leodahsan said:
about the heatsinks:
Oooh well too bad. 60 bucks is WAAAAY more than I was hoping to hear :O but thanks anyways! :beer:

I wish I could do them cheaper, as many requests as I get for custom work, but until I get my 7X lathe finished I have to do all of my "work" at work. Then I have to cut my boss in

Where are you planning to put a heatsink? on the outside of the aixiz module?

anselm · Feb 8, 2011

Re: single AAA or single 10440?

I'd make it a 10440 direct-driven (yes) 445nm.
Yeah I know you shouldn't, but apparently there have been several members pulling
it off successfully.
That tiny battery is probably too puny to deliver enough current at ~4V under load to
kill the diode.

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

I thought about the direct drive possibility
but it would overload the cell, as in 4.2v it could blow the diode...

LarryDFW has a direct driven 445, with a 4.35v overcharged cell.

@Pontiac
Yes. But I think the heatsink could help the aixiz module hold in the host.. don't you agree? I'll draw it. Wait a second.

edit: here you go:

RED represents heatsinking. Blue (bad quality, sorry) represents SETTING screw (holds whole thing in place).
by the way I removed the clip, so there is a small hole here, maybe the heatsink could cover it. (Just a thought)
Thanks all!

edit: needed heatsink info
3cm long, two setting screws (for fitting the aixiz module on the heatsink and the whole thing on the host), aluminium or copper, 1.5cm high, cylindrical. Attached

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

actual progress (sorry for pic size)

http://i54.tinypic.com/161fbjr.jpg

would make easier for everyone to understand. I need the heatsink for this little build, as everyone can see I'm holding the aixiz 'head' with my fingers, so it won't fell off. THAT would be the heatsink job..

anyone?

LazyBeam · Feb 8, 2011

Re: single AAA or single 10440?

turn the aixiz down to 10mm-10.5mm and then bore/drill out the tube for a press fit.
If the tube is aluminum or copper it will conduct heat better.
You can use thermal adhesive or interference fit to hold it in place.

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

Assuming I'll need a heatsink it wouldn't be easier to get a double screw hs to hold the whole thing in place?

the tube is brass, bad conductor

Thanks!

LarryDFW · Feb 8, 2011

Re: single AAA or single 10440?

Leodahsan;

Direct drive would work fine, but the 10440 cell internal resistance will be enough to only output about 300-350 ma.

A 14500 cell would drive it to a higher current level.

I like the idea of a copper sleeve over the Aixiz module.

LarryDFW

Leodahsan · Feb 8, 2011

Re: single AAA or single 10440?

Hey Larry. Direct drive would fry a LOC or LPC diode, right? I'm not going to build a low powered 445 here.. I have better plans to A140.. :evil:

edit: SLEEVE! Thats the right name. A sleeve type heatsink, thats what I need..

Hemlock_Mike · Feb 10, 2011

Re: single AAA or single 10440?

Here it is --- You asked me and others to do this cheap. I guess I was the "street corner whore" :wtf: This is my last time doing this but I think it will work. It ships tomorrow.

HMike

Leodahsan · Feb 10, 2011

Re: Single 10440 build

As he said, he make such a sleeve for me (thanks man..). That will hold the aixiz head inside, and the sleeve will attach at the host. Btw, what is that PCB down at the pic?

As LarryDFW said, a 10440 will only output 300~350mA. I've seen reports on dealextreme that they output up to 700mA (at 4.2v), so I'm afraid to direct drive on it. I need a driver.. anyone has recommendations? DDL isn't a real option.. I was thinking of something with 1v dropout DIYable.. With a lotta filtering. Where is JIB? Is you reading?

Hemlock_Mike · Feb 10, 2011

Re: Single 10440 build

I don't remember what that driver board is or was. It still makes a good photo support.
HMike

Single 10440 RED LOC build

Leodahsan

0

Pontiacg5

0

Leodahsan

0

Pontiacg5

0

Leodahsan

0

Pontiacg5

0

anselm

0

Leodahsan

0

Attachments

Leodahsan

0

LazyBeam

0

Leodahsan

0

LarryDFW

0

Leodahsan

0

Hemlock_Mike

0

Leodahsan

0

Hemlock_Mike

0

Online statistics

Forum statistics

Share this page