Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Building Laser Pointers Using the 445nm Laser Diodes

Greenmechanic

New member
Joined
Aug 28, 2009
Messages
1,071
Points
0
Pretty much covered all the bases--good emphasis on safety-gotta +rep you on this sir!!!:yh:

one question tho--any advantage or disavantage to removing the pink plastic part from the diode pins, in your opinion?

Does it help to seat the diode in the AixiZ module properly?


:thanks:for a job well done.
I leave it on, just to help stabilize the pins.(keep them from bending) during the pressing into the module. Also keeps them from breaking off, for the noobies.
The only other concern I have would be it melting. But if your diode is getting that hot, you need better heat-sinking.:D
 



hakzaw1

Well-known member
Joined
Apr 2, 2009
Messages
10,461
Points
113
Thanks for that advice Mark--I will leave the 1+watt 445s to the younger crowd--I am more laid back and comfortable with 5-600 mWs a good HS and a duty/rest cycle to make my 445s last forever.---hak
 

EhdisChris

New member
Joined
Jul 19, 2010
Messages
34
Points
0
This is awesome.
I'm just waiting for my JayRob kit to come in and the Module.

I just hope i don't kill the diode by overheating it by soldering.

oh and a question, i've seen some heat-shrink tubing over the wire connecting from the driver to the diode: which is better? (solder or heat-shrink)
 
Last edited:

jmgallego

Active member
Joined
Apr 9, 2008
Messages
374
Points
28
This is awesome.
I'm just waiting for my JayRob kit to come in and the Module.

I just hope i don't kill the diode by overheating it by soldering.

oh and a question, i've seen some heat-shrink tubing over the wire connecting from the driver to the diode: which is better? (solder or heat-shrink)

Actually, both. I insert the pieces of heat-shrink tubing to each of the two wires, sliding the tubing all the way to the driver. I then solder the wires to the diode. Next, I slide the tubing now all the way to the diode and using the heat of the soldering iron, I hover it over the tubing on both soldered pins, without touching it (otherwise, you will leave burned marks), until the tubing has shrank neatly to the pin and soldered wires.

I use the tubing to give it stability to the pins and to protect them coming into contact and creating a short.

Once you get your kit, please let me kow if you have any questions. :D
 

EhdisChris

New member
Joined
Jul 19, 2010
Messages
34
Points
0
Actually, both. I insert the pieces of heat-shrink tubing to each of the two wires, sliding the tubing all the way to the driver. I then solder the wires to the diode. Next, I slide the tubing now all the way to the diode and using the heat of the soldering iron, I hover it over the tubing on both soldered pins, without touching it (otherwise, you will leave burned marks), until the tubing has shrank neatly to the pin and soldered wires.

I use the tubing to give it stability to the pins and to protect them coming into contact and creating a short.

Once you get your kit, please let me kow if you have any questions. :D

Awesome :thanks:
yeah that cleared it up a whole lot.
 

jmgallego

Active member
Joined
Apr 9, 2008
Messages
374
Points
28
in this part you said


2. Although there are several ways to “press-fit” the diode into the Aixiz, I prefer the way someone described here a while back. Place the small hole of the back half of the Aixiz housing on top of the diode. Make sure the pins of the diode are inside and that is properly aligned as in this photo and press it slightly, enough to hold in place:



After this you will not ned the back half of the Aixiz housing, CORRECT?
right?

If you are doing this built, that is correct. There are other designs that use the complete set.
 

jmgallego

Active member
Joined
Apr 9, 2008
Messages
374
Points
28
Pretty much covered all the bases--good emphasis on safety-gotta +rep you on this sir!!!:yh:

one question tho--any advantage or disavantage to removing the pink plastic part from the diode pins, in your opinion?

Does it help to seat the diode in the AixiZ module properly?

:thanks:for a job well done.

THANK YOU VERY MUCH hakzaw1!! :D

I had never done the pressing with jumper (or pin support) on the diodes before. I always have taken them out and the pressed the diode. In this case I left it and pressed it without any problem.

The pink plastic part will stand the heat generated by the laser diode, it prevents from bending the pins and possible prevent creating a short. I am building a couple lasers this weekend, I will check on both questions and get back to you.
 
Last edited:

jmgallego

Active member
Joined
Apr 9, 2008
Messages
374
Points
28
Thanks for that advice Mark--I will leave the 1+watt 445s to the younger crowd--I am more laid back and comfortable with 5-600 mWs a good HS and a duty/rest cycle to make my 445s last forever.---hak

Heck, I will check at what temperature it starts melting, will let you know.
 

jmgallego

Active member
Joined
Apr 9, 2008
Messages
374
Points
28
Heck, I will check at what temperature it starts melting, will let you know.

Got the current up to 1.2A, let it on for about 2 minutes...nothing, the pink plastic jump was fine. I also check the original built and looks intact... so, no nothing happens to it, no melt down, does not get soft... great little jumper :D
 




Top