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



Finally got brave.

o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
Ok so I finally decided to take apart my dvd burner. I did all the details to make a burning laser pointer. I am running the LD from Daedal's circuit with an input voltage from a 9 volt battery. Now, not wanting to blow my precious LD, I am getting a nice red dot at 130 mA. Also the LD is running at 2.72 volts. Is this too low to burn anything? Or is my focus off? I have it focused so it is a nice round bright red dot about 5 or 6 feet out in front of me on the wall. If anyone could help me I would appreciate it. I dont want to push the mA too far and ruin the only LD I have.
 



o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
Kaspar lol thanks, but are you being sarcastic? I do not want to blow my LD. Do you think 130 mA is too low?
 

Kaspar389

New member
Joined
Sep 8, 2007
Messages
107
Points
0
Im being serious, I mean...the dorcy mod does like...300ma I think
How do you control the MA on daedals circuit?
 

Gazoo

Active member
Joined
Jun 9, 2007
Messages
3,199
Points
38
Death Angel said:
Kaspar lol thanks, but are you being sarcastic? I do not want to blow my LD. Do you think 130 mA is too low?
Make and model of the DVD burner????????
 

Gazoo

Active member
Joined
Jun 9, 2007
Messages
3,199
Points
38
It is a 4X burner...do not go over 100ma's. I harvested one from an older HP 4X burner and it died as soon as I went to 150 ma's. If you want it to last awhile stay at 100ma's...even that might be pushing it a bit hard.
 

LarryQ

New member
Joined
Aug 13, 2007
Messages
726
Points
0
I believe it is only a 4X dvd burner....

Not sure if it's going to be able to burn, and will not take high current.

Larry
 

o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
HOLY SMOKES. LITERALLY!!!! ;D ;D ;D I turned it 160 mA and I can burn a hole clean through electrical tape. WOW I am excited. My 1st DIY red a SUCCESS. WOOT WOOT!!!!! ;D ;D ;D
 

o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
Gazoo said:
It is a 4X burner...do not go over 100ma's. I harvested one from an older HP 4X burner and it died as soon as I went to 150 ma's. If you want it to last awhile stay at 100ma's...even that might be pushing it a bit hard.
Not sure though cuz at 130 mA it was not that bright and didnt burn squat.
 

Gazoo

Active member
Joined
Jun 9, 2007
Messages
3,199
Points
38
You are lucky.... ;D Be careful though...if you insist on pushing it that high it will die unless it is one of those freak diodes. Keep the duty cycles very short.

And btw, congratulations on your first harvest, I am glad it was successful.. ;)
 

o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
Thanks Gazoo. I am really happy. Yeah I only have about 20 seconds on because man this sucker gets hot to the touch. I am running at a steady 150 mA and it still burns tape about 8 inches away.
 

Hemlock_Mike

Well-known member
Joined
Jan 7, 2007
Messages
6,284
Points
83
I'm glad Gazoo asked the question soon enough.  You are pushing a 4x to the max--- It may not last long but you have a good bed for the new GB diode.
If you burn out that diode, you follow a long line of us who have about 20 sad LED's  :(  
You have done the ground work.  Congrats.

Mike

OMG -- You got a heatsink on that diode ??? You must have a heatsink.
 

o_DEATH_ANG3L_o

New member
Joined
Sep 7, 2007
Messages
634
Points
0
Kaspar lol where have you been man? Its all over the forums. His cicuit is a current regulator and thus controlling milliamps with a pot.
 

Kaspar389

New member
Joined
Sep 8, 2007
Messages
107
Points
0
Oh, so you can just adjust the pot, cool.

Im deffinatly ganna make one soon, wanna help me when I do?

lol

Can I buy all the parts at RS?
 




Top