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Need help on Stonetek 16x DVD Burner diode

laserdude101

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I recently got my stonetek diode today, and It was bright, but then when I next plugged in the battery, the beam is dim, please help me ASAP.
 



iskor12

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Did you read all of the FAQs?
Never plug a laser diode directly to a battery. You will kill it. (THe diode)
You need a laser driver that will limit the ammount of current that goes to the diode.
 

billg519

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We would need lots more info in order to help you properly. What kind of driver? LM317? What current was the driver set to? What batteries are you using?
 

Gryphon

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^ exactly, using a homemade driver is fine, i've done it several times, the question is was it set up correctly
 

laserdude101

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It went fine, then the diode went dim, I exactly followed the video from PhazonXL, but I don't know whats wrong.
 

iskor12

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We understand that, but we still need more information.
What did you set the current at?

Could you post a link to the video?
 

laserdude101

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Well, this is all I know fron the top of my brain, I was using a 9v battery, and if you want more, here is a link:

YouTube - DIY: How to build a laser diode driver

That's all I can tell what I know, by the way, if you watch the video guys, you might be able to understand. ;)

EDIT: The pot is just there to adjust the brightness, it's actully not needed.
 

iskor12

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Did you use a pot or not?
The pot really is needed. It controls the amount of current supplied to your diode. To much current=dead diode.
This is actually a good video.
This is what you made...am I right?

You Killed your diode from to much current. It's a noob mistake. It happens to all of us. Buy/find another diode and give it a try again, except next time set the current to the proper levels first.
 

laserdude101

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Thanks for the help guys, this time I did use the pot and it is good as new again, thanks again. :)
 




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