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Old 11-15-2012, 03:18 PM #1
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Default Wanting to build a 445nm 1.5 watt laser

Hello
I want to build a laser to get a bit experience before I get more into a project,

Can you please check if I have forgotten something:
M140 Diode+aixiz+glass lens from DTR 60$
X-driver V6 Mini from lazeerer 15$
Host: Solar force L2P kit from jayrob 34$
I will look for batteries and charger tomorrow at my local electronic store.

Goggles will probably be eagle pairs,
I know laser safety (worked in a research center for lasers 2 week)


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Old 11-16-2012, 08:54 AM #2
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Default Re: Wanting to build a 445nm 1.5 watt laser

Because no one answered I would guess that the components are ok,

How do I know how much voltage I need to put into the driver and diode?

Also maybe did someone a chart where you can see the output and the current of the diodes for comparison?

As far as my very limited knowledge of electric would go I say that I just wire -/+ to -/+ and it should work right?
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Old 11-16-2012, 09:44 AM #3
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Default Re: Wanting to build a 445nm 1.5 watt laser

Just saw the thread. Your host will need a heat sink if it doesnt come with one and you didnt mention a module for the diode, but Im pretty certain thats included from DTR. You might also like to add good quality silicone wire (check up flaminpyro), some thermal compound like arctic silver/alu and maybe a nice focus adapter. Not the std one from aixiz where your fingers are at risk!

Drivers are usually preset at your desired current 1.8 A is usually the max for the M140 diodes and will give anything between 1.3 - 2.9 W depending on what lens you use and the efficiency of your diode. The std 3 ele glass lens you mentioned, gives approx a 30% lower output than a G2. The G lenses ie G1 and G2 can be bought from Jayrob and DTR respectively.

WTR wiring check DTRs shop he has all the wiring info for the M140 diodes on his sales page, just scroll down. You can also check the "I want to build a laser thread" for more info. Good luck


Edit: Forgot to mention it (and I know you worked with lasers before) so I hope you dont take it the wrong way, but if you dont have some goggles, or need info on where to buy them check out this thread.
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100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 11-16-2012 at 09:50 AM.
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Old 11-16-2012, 11:53 AM #4
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Default Re: Wanting to build a 445nm 1.5 watt laser

ok thanks, silicon wire i will add thath.
Heatsink is made by jayrobe, also i have enough Thermal compound, (where should i add the compound?)
i will set the driver to 1.7 amps, i have some little heatsink for Graphikcard Vram banks should be enough for the driver.

Edit: how much estimated Runtime do i have if i install one 18650 battery?
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Last edited by skavier480; 11-16-2012 at 12:06 PM.
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Old 11-16-2012, 12:08 PM #5
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Default Re: Wanting to build a 445nm 1.5 watt laser

You add the compound where ever the heat needs to be transferred. Not sure if DTR uses it between the module and the diode, but some do. If your getting it from him already pressed its irrelevant anyway! So that leaves between the module and the heatsink and between the heatsink and the host. Basically you should use as little as possible, but just enough to fill the gaps. The fits between all the sinks should be very tight anyway.
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Need info on goggles? Look here: Get safety goggles now!

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Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 11-16-2012 at 12:25 PM.
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Old 11-16-2012, 12:57 PM #6
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Default Re: Wanting to build a 445nm 1.5 watt laser

Hi. Just saw this thread and I will share my experiences with you.

You cannot run the X-Drive with a single Li-Ion battery. You need two cells.
If you are using a host that takes a 18650, then it will probably take two 16340 or 18350 cells. (the latter giving more capacity and fitting the host better, but harder to find)
Edit: To fit either of these pairs of cells, you may need to modify the tailcap spring or similar to make them fit.

runtime with two 18350's? about 45 minutes.

You can get 18350 cells here for not very expensive. I haven't tried these specific ones but theres not much to lose. Charge with any 3.7V Li-Ion charger.
UltraFire 18350 3.7V 1200mAh Batteries (Pair) - Free Shipping - DealExtreme

Oh, and silicone wire is awesome, especially when space inside the host is at a premium as it can be flexed and packed with less change of breaking stuff.

Last edited by nztdm; 11-16-2012 at 12:58 PM.
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Old 11-16-2012, 02:05 PM #7
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Default Re: Wanting to build a 445nm 1.5 watt laser

btw how can i calculate what would work and what not?
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Old 11-16-2012, 02:12 PM #8
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Default Re: Wanting to build a 445nm 1.5 watt laser

Quote:
Originally Posted by skavier480 View Post
btw how can i calculate what would work and what not?
If the driver is a buck or linear youll need 2 bats for a 445. If its a boost you should use one. The X drive v6 is a buck so youll need 2 bats...

Have a read here: How laser diode drivers work; An Explanatory Thread

Edit: Theres actually a really good search function integrated with the site and so far, all your questions would have been answered using it.
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New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 11-16-2012 at 02:15 PM.
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Old 11-16-2012, 02:34 PM #9
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Default Re: Wanting to build a 445nm 1.5 watt laser

thats a realy nice thread but still, how do i know how much voltage i need for the diodes? and the driver?
i used the search function for most of my problems, i didnt found answers to the ones iam asking now.

ok i will then buy the 'HOT' option from jayrob.
as it comes with a boost driver.
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Old 11-17-2012, 12:10 AM #10
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Default Re: Wanting to build a 445nm 1.5 watt laser

Quote:
Originally Posted by skavier480 View Post
thats a realy nice thread but still, how do i know how much voltage i need for the diodes? and the driver?
i used the search function for most of my problems, i didnt found answers to the ones iam asking now.

ok i will then buy the 'HOT' option from jayrob.
as it comes with a boost driver.
if you know how to use a soldering iron and thermal adhesive, then the HOT option is unnecessary. you can ask jayrob to just give you the driver and not install it and you save some money.

i had the same questions a couple of months ago.

you don't need to know what voltage the diode needs unless you make your own driver. the drivers you are going to get will work with the blue laser fine.

voltage for the driver? if it needs 2 batteries like the X-Drive, then it needs about 6V minimum and 8.4V maximum. (that's about the minimum and maximum voltages of lithium batteries)
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Old 11-18-2012, 12:00 PM #11
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Default Re: Wanting to build a 445nm 1.5 watt laser

ok,
can you recommend me a boostdriver?
bonus points for a adjustable one.
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Old 11-18-2012, 10:47 PM #12
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Default Re: Wanting to build a 445nm 1.5 watt laser

Yes. There are adjustable ones, but I don't know them off the top of my head. However, there is this one which may give you even 2W if you have a lucky diode https://sites.google.com/site/dtrlpf...k-boost-driver
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Old 11-19-2012, 02:28 PM #13
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Default Re: Wanting to build a 445nm 1.5 watt laser

ok thank you.
the X-boost from lazeerer looked realy got but sadly he isnt selling them yet
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Last edited by skavier480; 11-19-2012 at 02:29 PM.
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Old 11-21-2012, 08:28 PM #14
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Default Re: Wanting to build a 445nm 1.5 watt laser

can you help me with setting up this formular for Lasersafety Glasses from Uvex (germany).
as I found no where specs or a data sheet on the m140 diodes.
Pic
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