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What does this Laser Module require to power up?






crazyspaz

crazyspaz

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Nooooo do NOT connect your diode directly to batteries...you need a driver, dude. Hopefully you didn't fry it :(

Diodes always need drivers, because they are very current-hungry, they will suck all the amperage you give them-usually frying them.
 
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ichistar2013

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ooooh well how do i know if it got fried though? nothing lit up so i only just let it touch abit.
Edit: I only let it tap for like 10 seconds or 5 seconds in total but nothing happened so yeah.
 
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Zeebit

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Not trying to be a dick but that's what you get for not reading.
 
NKO29

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Umm... 5 seconds would have most likely killed it :( Maybe the lack of voltage may have saved it, but i have no idea.
 
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ichistar2013

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Well i'll explain what i did exactly, i have a battery holder with positive and negative wire so it's not directly to the batteries, wouldn't it go really bright when it fries?
These batteries are kind of bad brand ones and i've been using them for other laser modules for quite awhile now
 
NKO29

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Well, the amount I vtage for that diode to run is well over 3v... It's about 5.5v needed to run. But you should NEVER run any diode without some sort of current limiting resistor/regulating circuit.
 
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ichistar2013

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Okay well i'll remember that now, also test a laser module WITH a resistor at least, wouldn't it show signs of being fried at least? i mean like i didn't leave the wires soldered or anything i just let it touch a few times but i know it wasn't too long i just let it tapped and saw nothing light up and then stoppped..
 
tmackbb4

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The diodes are current hungry. They will draw current until they kill themselves if not regulated. You know, like Americans with cheeseburgers.
 
NKO29

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The diode may not necessarily turned on at such a low voltage. The diode requires at least 5v to make light. You might be lucky :)
 
Blaster

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ichistar2013 said:
Well i'll explain what i did exactly, i have a battery holder with positive and negative wire so it's not directly to the batteries, wouldn't it go really bright when it fries?
These batteries are kind of bad brand ones and i've been using them for other laser modules for quite awhile now
Click to expand...
yes usually when its about to fry from thermal runaway it will go really bright, but the time you have to remove the power as its very rapidly growing in brightness is extremely short.by the time you realize its about to blow its usually to late .and if by some chance you are just fast enough you will have severely reduced the life of the diode if you connect it up properly later, and it appears to work OK
 
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ichistar2013

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That's what i was thinking also, are some laser modules like that? I'm not entirely sure about the one i purchased, but thank you all i hope it didn't fry
 
tmackbb4

tmackbb4

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Like Nko said hopefully it wasn't enough power to even try to function. But best of luck with it. Let us know if it gets up and lasing.
 
Blaster

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ichistar2013 said:
That's what i was thinking also, are some laser modules like that? I'm not entirely sure about the one i purchased, but thank you all i hope it didn't fry
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well by the website your diode if its the 60.dollar one doesn't have a current regulator in it ie driver board just diode and lens kit . The 90 dollar and up ones do so you may be lucky using low voltage, do some more checking with the supplier to be certain. I know its tempting to just get it up and going but do the homework first to make sure good luck.
 
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