Old 06-17-2014, 12:56 AM #1
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Default Making sure I don't kill my laser

Just got my x-drive v6 and am wondering if there is anything I should do/don't do/know before soldering everything and powering it up. Also what batteries should I use?

The laser diode:1W 1 5W 445nm A140 Blue Laser Diode in Copper Module w Leads | eBay


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Old 06-17-2014, 02:46 AM #2
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Default Re: Making sure I don't kill my laser

Depends on the host but you'll need two 3.7V li-ion batteries.
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Old 06-17-2014, 08:38 AM #3
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Default Re: Making sure I don't kill my laser

Well, making sure it outputs the correct current is a good idea. Build a test load first to see if it's alright.

Just to avoid any headaches down the road.
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Old 06-19-2014, 09:39 PM #4
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Default Re: Making sure I don't kill my laser

Thank you very much!
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Old 06-19-2014, 09:43 PM #5
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Default Re: Making sure I don't kill my laser

Don't solder the negative input wire to the positive terminal like I did last week. Smelled like burned tea lol.
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Old 06-19-2014, 10:54 PM #6
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Default Re: Making sure I don't kill my laser

Don't run it without a heatsink. Turn off power and short the output of the driver before connecting the
diode. Double and triple check polarities. Pay close attention to temperature.
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Old 06-19-2014, 11:17 PM #7
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Default Re: Making sure I don't kill my laser

ok, double checking v-/v+ is input and LD-/LD+ is output? I have a heatsink for the diode but not for the driver, what type of heatsink do I need for it?
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Old 06-19-2014, 11:49 PM #8
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Default Re: Making sure I don't kill my laser

LD = Laser Diode

The X-drive doesn't need a heatsink at these currents if you're only running it for a short time. What
current are you running at?
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Old 06-19-2014, 11:53 PM #9
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Default Re: Making sure I don't kill my laser

I don't even use a heatsink when hitting 2.4A lol. Whoops
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Old 06-20-2014, 12:19 AM #10
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Default Re: Making sure I don't kill my laser

well, the driver is set at 1.8A if that's what you mean.
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Old 06-20-2014, 12:36 AM #11
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Default Re: Making sure I don't kill my laser

The driver should be heatsinked if you plan on running it longer than 2 minutes. For testing it will be fine,
just keep a close watch on temperatures.
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Old 06-20-2014, 03:55 PM #12
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Lightbulb Re: Making sure I don't kill my laser

will this test load work?
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Old 06-20-2014, 04:14 PM #13
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Default Re: Making sure I don't kill my laser

Sure.

Just make sure your 1ohm resistor is a beefy one. Don't want to stink up your whole work room, burnt resistors smell really funny.
Anything rated for 2W will be fine.

1W will be fine for very short tests too. Just don't keep it on for longer than 5 seconds or so.
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Old 06-20-2014, 05:04 PM #14
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Default Re: Making sure I don't kill my laser

Thanks!. my multimeter does not have a MV setting. can I just use the DCV setting?(sorry, I looked it up, couldn't find anything)
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Old 06-20-2014, 06:06 PM #15
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Yeah that will do. Do you have an auto ranging meter?
Because if you do there only should be volts.
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Old 06-20-2014, 06:11 PM #16
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Default Re: Making sure I don't kill my laser

no, it has a dial to select the range.
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