Silver penstyle 445nm Pointer

[laserlighter]

Just want to share my latest build.
Modded an low power 532nm pointer.
I think the new one rules much more.
Duty cycle is very short, about 30 sec due to its relativ high output (about 600mW)
I used flexdrive set to 600mA and A140 c@si0 diode.

But let the pictures talk...

Heatsink is drilled out of aluminium wit press in fit for the diode.

 

[JLSE]

Surgical tubing FTW! Very nice setup :beer:

 

[Trevor]

Wow... really really nice looking.

-Trevor

 

[Meatball]

I like your little driver/diode module assembly. Seems to have saved you a lot of space!

 

[RA_pierce]

Nice work!
I like to see clean pen-style pointers.

 

[anselm]

That thing must suck them AAAs dry soooo fast....:crackup:

How come I don't see any negative wires, only one set, presumably for positive?:thinking:

 

[DTR]

Very nice build. Did you make the little module or was it like that? Either way that is some great stats for some AAA's. You could also make a spacer and use a single rechargable 10440.

 

[Trevor]

That thing must suck them AAAs dry soooo fast....:crackup:

How come I don't see any negative wires, only one set, presumably for positive?:thinking:

He's probably attached a pin to the case to use for negative? Good question.

-Trevor

 

[laserlighter]

He's probably attached a pin to the case to use for negative? Good question.

-Trevor

i used the negative contact of the diode (direct press).
The wire is soldered under the driver so you can't see it.

The aluminium part was made on a lathe by myself.

The AAA don't last very long, only real fresh ones work. maybe i have to turn the pot down a lot^^

 

[anselm]

Try NiMh rechargeables, they can deliver more current than Alkalines, IIRC.

 

[laserlighter]

Try NiMh rechargeables, they can deliver more current than Alkalines, IIRC.

you are right, normally they work bether. But in this case its a mather of voltage. The flexdrive beginns to dim at about 2,5V.
so with brand new Duracell AAA batteries (1,6V) with an inner resistance of about 100-200mOhm and a current of >1A they drop voltage by ~2x0,2V

-->
With 2 x Duracell:
2 x 1,6V - 0,4V = 2,8V
i'm still bether than:
2 x 1,2V = 2,4V from 2x NiMh

But maybe I chop it and try a 10440.
That would be a sweet little beast.