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Old 10-25-2007, 12:35 PM #17
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Default Re: Group Buy #2 Violet laser modules $27 target

if i sell my dorcy i am deffenatly in for one

this is sooooo sweet i want a blu-ray laser soo much.
thanks for doing this man

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Old 10-25-2007, 03:08 PM #18
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Default Re: Group Buy #2 Violet laser modules $27 target

Quote:
Originally Posted by BlueFusion
[quote author=drlava link=1193205551/0#11 date=1193265420][quote author=BlueFusion link=1193205551/0#9 date=1193262832]Hey drlava, they are $14 each (but i emailed them with a RFQ for 30 to see if we could get the price down) so if i buy two thats already over the $25... :P
Hmm, that would be fine, but looking here:
http://dkc3.digikey.com/PDF/T073/P2298.pdf
top-right it looks like it's not compatible with the common cathode layout of the laser here:
http://www.fineartradiography.com/ho...ray/index.html

Is there a mistake?
[/quote]

There is a whole thread about using this driver for blurays. Try this post.

Quote:
Originally Posted by Daedal
With the testing that I have done already... I can report as follows...

1. The controller is GO!
2. I noticed a rather quick ramp up in power when starting the diode.
3. IT IS SMALL!!! AND HARD TO SOLDER TO...
4. The little pot on there is extremely sensitive... >
5. Very nice control and doesn't heat up as much as I suspected.
6. I have ramped it up to 160mA, didn't need to go any further, and as such that is where I stopped. It seems to warm up at such high drive power though... :-/
7. I like it, and trust it with driving a BluRay diode, and that is what I got it for

GL;
DDL
[/quote]

I saw that thread and noticed this post:
Quote:
Ok, tested it on a BluRay diode... This is pretty much useless! IT powers the diode up to about 10mW and then stops... I managed to get it up to 18.5mW MAX, after which it did the exact same thing Sad

Bummer;
DDL
but he didn't say anything much after that. to me, 10mW-18.5mW is very useful, so hopefully he will clarify. Also, SenKat never said anything about it in that thread. Hopefully he will chime in, too.
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Old 10-25-2007, 03:15 PM #19
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Default Re: Group Buy #2 Violet laser modules $27 target

Here is SenKat's chime : I don't care for that driver, as a 7805 Voltage regulator works perfectly for this application - and they are a LOT less expensive - with regulated output, and a current limiting resistor, you will be good to go ! :-)
[ /end chime ] hehehehe
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Old 10-25-2007, 03:48 PM #20
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Default Re: Group Buy #2 Violet laser modules $27 target

thanks, Sen. A regulator like you describe will be included in the group buy driver kit (if selected) It should be more robust, and it's cheaper than the digikey one, too.
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Old 10-25-2007, 09:34 PM #21
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Default Re: Group Buy #2 Violet laser modules $27 target

Perhaps a little caution here. I think I've seen posts of using the 7805 with a 1 ohm resistor. That resistor may be a little low.
My Blu runs at 50 mA with a junction voltage of 4.86 volts. My math indicates a need for a 2.8 ohm series resistor.

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Old 10-25-2007, 09:48 PM #22
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Default Re: Group Buy #2 Violet laser modules $27 target

I will be using a 78L05A. This is the 100ma TO-92 case version and it has a 1.7 volt drop out voltage. I was going to use it as a current regulator, but Daedal confirmed my testing of it as a current regulator and it is a no go. But it works very well as a voltage regulator.

You can get them here for 10 cents a piece and he has many other parts for cheap:

http://stores.ebay.com/Techno-Star_V...QQftidZ2QQtZkm

I also ordered some 50 ohm precision trim pots from him for 99 cents a piece!
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Old 10-26-2007, 12:38 AM #23
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Default Re: Group Buy #2 Violet laser modules $27 target

Added participant list. Time for payments to start coming in.
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Old 10-26-2007, 02:29 AM #24
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Default Re: Group Buy #2 Violet laser modules $27 target

what are the specs on the lm317
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Old 10-26-2007, 02:36 AM #25
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Default Re: Group Buy #2 Violet laser modules $27 target

Justin --
That info is all over this forum. Also, go to google and type in LM 317.
Use a search here.

Mike
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Old 10-26-2007, 02:39 AM #26
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Default Re: Group Buy #2 Violet laser modules $27 target

Quote:
Originally Posted by justin07
what are the specs on the lm317
The LM317 circuit will have slow-start capacitor, current regulator with to-220 package, heat sink, two current ranges for adjustment: current adjustable from 20-80mA for this diode, to about 500mA for other diodes. With an included resistor change the current range can be changed. Will come with a protoboard, resistors, pot, and instructions.
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Old 10-26-2007, 06:20 AM #27
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Default Re: Group Buy #2 Violet laser modules $27 target

Can you please post a picture of what the lens kit contains? I might want one for other laser diodes too. Thanks.
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Old 10-26-2007, 07:13 AM #28
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Default Re: Group Buy #2 Violet laser modules $27 target

Quote:
Originally Posted by Bionic-Badger
Can you please post a picture of what the lens kit contains? I might want one for other laser diodes too. Thanks.
I updated the original post with a picture.
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Old 10-26-2007, 10:52 AM #29
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Default Re: Group Buy #2 Violet laser modules $27 target

Ah, very nice. This sure beats going through Axiz. Google payment on its way.
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Old 10-26-2007, 08:26 PM #30
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Default Re: Group Buy #2 Violet laser modules $27 target

just paid for an order 1 ld 1 lens &amp; 1 driver. any estimate on how long before i get them?
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Old 10-26-2007, 08:49 PM #31
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Default Re: Group Buy #2 Violet laser modules $27 target

we are quickly approaching the 22 paid-for mark, so they will be ordered early next week.
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Old 10-27-2007, 01:12 AM #32
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Default Re: Group Buy #2 Violet laser modules $27 target

Hey did you sell a blu-ray diode? how much is that, i will use it for my project, how can i pay for that item, thanks.
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