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ArcticMyst Security by Avery

building a red dvd burner laser!

M

member02

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eh, i know it's nothing new, but I'm doing it too, and I've run into questions...

I made the nice driver that works with two cr23 batteries, and powered up the diode, it made a really really bright large unfocused dot on the wall as I turned up the pot, and seemed solidly bright, didn't get too hot either.

I was wondering, the axis module, is it's focusing lens what turns the laser diode into a pointer?

thanks.
 





J

JECS

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yeah.. mine, until focused with a module, is more oval with a bunch of strange dots inside it and quite scattered.
 
Kenom

Kenom

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YOu won't want to play with that thing much more until You do get a module. The module acts as a heatsink and you can damage the diode very quickly without it. I can't count how many folks here have killed diodes while playing with them outside of modules. I think the # is in the 100's!
 
W

WahHK

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Oh shit!
I just killed my 16X DVD burner laser diode by connecting 4 AA batteries!!!
I spent $4 to buy it :'( :'( :'( :'(
 
M

member02

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$4? damn, I had a $5 cup of coffee today from starbucks.

anyhow, here's a picture of my giant floating invisble circuit board and diode turned on:
 

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J

JECS

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yeah $4 is a cheap diode. no big loss.senkats are $20

i have only used 2aa/3aaa so far. without a module or any sort of cooling. diode doesnt get hot at all unless i run it for like 10 minutes straight. even still its only moderately warm.

is the uh..diode.. disconnected in that picture?
 
Kenom

Kenom

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JECS said:
is the uh..diode.. disconnected in that picture?
Click to expand...



HAHAHA JECS. I actually though you meant the laser diode! I was like DUH NO!! Then I saw the normal diode not connected and thought. Well now I'm the one that's stupid Not JECS!!!
 
J

JECS

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id be impressed if he got the ld to light up without it being connected ;)
 
M

member02

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lol!!!! yea, I noticed that last night before someone here did, oddly enough, I swear by it, but I measure the SAME voltage with OR without that diode connected


I thought these things were supposed to cause a 0.7v drop?
 
W

wooooooolazer

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I Think that is just when there put in series, since you have it in parallel i dont think it drops any?

...lazer.... ;D ;D ;D
 
M

member02

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so the diode only acts to prevent the battery in reverse from reaching the LD?
 
W

wooooooolazer

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Basicly yes, thats why the diode is put in backwards, the line normaly should point to the negative but since its for reverse protection its not.


....lazer.... ;D ;D ;D
 
M

member02

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is there a cheaper way to collimate the laser into a beam than using a module from DX?

i mean, what kind of optics do I need to buy from those places that have optics for sale, and has anyone figured out a ghetto-fabulous way to do this?
 
J

JECS

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the aixiz module is basically just the best way to go. it gives a bit of a heatsink plus you can adjust the distance of the optics. if you are inside the us you can order 10 blank modules from aixiz on ebay for $30 shipped i think. less than $40 anyways. add an extra $2.50 to that for international shipping
 
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