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Building my first laser need help!

cool qwertyuiop

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Joined
Feb 8, 2021
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I understand how to build the whole thing, except I am confused on how to solder the back of the driver I know that I need to solder the + and - leads to the top of pcb, but the back of it- do I need to make a solder connection from the outer ring to the host? I am using a 20mm Buck LED/Laser Driver - 6V to 14V - 5-Function - 250mA - 1000mA Output.

Here is a picture if you don't understand, I am wondering if I need to make solder connections where I drew red dots? (I haven't started soldering yet just want to make sure I do everything right)
image75875.jpg
 



gazer101

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Feb 23, 2020
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Yes, there should be a reliable connection from host - to driver input -
 

paul1598419

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Sep 20, 2013
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You will need to solder the connection you pictured here, but I would reconsider the use of an LED driver as they are noisier than laser diode drivers and can damage or kill your diode.
 

RedCowboy

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Jul 10, 2015
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Not if it's a tight fit, the round drivers are designed to make contact at their perimeter, if it fits tightly you typically don't need any solder.
 




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