6x Blu

Re: 4x Blu

Unless Sony doesn't let Toshiba make Blu-Ray players.

Re: 4x Blu

hi jayrob can you show me the pin connection of the BRLD burner connecting to DDL driver? please i need a guide of pin configuration of the BRLD burner, i just need a reference, thanks.

Re: 4x Blu

adgmeijin said:

hi jayrob can you show me the pin connection of the BRLD burner connecting to DDL driver? please i need a guide of pin configuration of the BRLD burner, i just need a reference, thanks.

Click to expand...

This picture is what we are used to with the red diodes:

But the blu-ray writer diodes that we have harvested, although they look the same visually, they connect differently. The positive lead is the same pin, but the negative lead goes to the one in the picture that says 'not used'. I found this out the hard way...

P.S. drlava has a nice picture on this page of the thread we are in.
http://www.laserpointerforums.com/forums/YaBB.pl?num=1203129030/30#42

The only difference is, he has a small capacitor between the pins, which he used for his testing equ. But this is not needed when building a pointer. Just the normal silicon diode and cap, with the DDL style driver. (That's the driver I used anyway)

Right here:
Use this 50 ohm pot if you want to build an adjustable DDL driver like the one I have shown here:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-2981-ND
This one has the pins on it. Now it's only 1/4 watt (200mA's or less when used with the LM317), so I am using it specifically for a DDL blu-ray driver. It is a 12 turn pot, and gives you fine adjustment at those low current levels...

For a DDL style driver to be used in a blu-ray, you need a battery supply of at least 9 volts. I am using a host that takes 3 X AAA size batteries. (3.6 volt 10440 batteries = 12.6 volts at full charge) If you have not seen the host I am talking about, look here:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1202168096/0
I love this $10 dollar MXDL host for a blu-ray! If you held it in your hand and used it, you would have to have one...
Jay

Re: 4x Blu

iewed said:

Unless Sony doesn't let Toshiba make Blu-Ray players.

Click to expand...

They cant do that. Anybody who wants to can make BD players, they just have to pay licensing. Hell microsoft is making one as we speak...and Sony absolutely HATES M$.

Re: 4x Blu

hi jayrob i am now using rog's 7805 driver, using 2 RCR123A total of 7.2 volts input. is it possible to run this BRLD burner using this circuit driver? if possible what was the maximum output i can do with this? it has also 100ohm trimpot and a 33ohm resistor to control the current. can you give me some idea about this? thanks.

Re: 4x Blu

adgmeijin said:

hi jayrob i am now using rog's 7805 driver, using 2 RCR123A total of 7.2 volts input. is it possible to run this BRLD burner using this circuit driver? if possible what was the maximum output i can do with this? it has also 100ohm trimpot and a 33ohm resistor to control the current. can you give me some idea about this? thanks.

Click to expand...

Sorry, the only experience that I have with the 7805 voltage regulator, is that I am using one on my TEC cooled 'Ice Box' laser to regulate the voltage to 5 volts for my peltier fan. I can tell you all about the LM317 based drivers, but have not made a laser driver using the 7805. I'm sure there are some here that can help you out there though...
Jay

Re: 4x Blu

ok , any way is that possible to run the LM317 or DDL style driver with 7.2v input for the bluray burner ? can you give me some hints about this, thanks.

Re: 4x Blu

adgmeijin said:

ok , any way is that possible to run the LM317 or DDL style driver with 7.2v input for the bluray burner ? can you give me some hints about this, thanks.

Click to expand...

It may be possible with the 7805, although I don't know. I do know, that with the LM317/DDL style driver that I pictured above, you will need at least 9 volts supply. The host I showed links for there, uses 3 X AAA sized batteries. So, to get the needed supply for a blu-ray/DDL style driver, you would use 3 X 10440 3.6 volt batteries...
Jay

Re: 4x Blu

which pin is positive and which is negative it the pic of dl's burner diode?

also how exactly did you get the diode out of it's heatsink?

Thanks,
Mitch

Re: 4x Blu

rubberband said:

which pin is positive and which is negative it the pic of dl's burner diode?

also how exactly did you get the diode out of it's heatsink?

Thanks,
Mitch

Click to expand...

I can chime in here and tell you that in drlava's picture, the left pin is positive. Just like the diagram I showed above. As for getting the diode out of it's heatsink. My drive was a different one than lava's and Mike's, but that is going to be the most delicate part of the entire build. With mine, (same as the open can reds) I carefully protect the diode with blue painters tape, and then use a fine cutting wheel on my Dremel to make a small cut through the aluminum. Then, using a small screwdriver, pry the stock heatsink open a little...
Jay

Re: 4x Blu

ok thanks for the pins i don't have a dremel is there any other way? i may need to pick one up. are they expensive? did you mount it in a vice aswell? i need some money haha

Thanks,
Mitch

Re: 4x Blu

i say, u guys are truly inspiring and are pioneering the way for novice laser enthusiasts like myself

Re: 4x Blu

clwatkins10 said:

i say, u guys are truly inspiring and are pioneering the way for novice laser enthusiasts like myself

Click to expand...

I'll say the same! Hemlock Mike and drlava have diodes there that are unbelievable! I am so glad to know about it, and which drive to get them from. Don't get me wrong. My 63mW, 2 X blu-ray is VERY, VERY nice. You can see the beam in the night sky in normal 'city light' conditions! But you get 'instantly spoiled' on more power from the mesmerizing 405nm! So, scrap the short lived 2 X harvest. That drive may as well not even exist! I want a diode like theirs!!! I want 90mW's to 100mW's!
Jay

Re: 4x Blu

drlava said:

The extraction went smoothly, although there were some hairy moments with removing the diode from the little mount.  One interesting note:  there is a beam circularizer optic built in to the mini diode holder!  I have been hoping for these for a while and it's nice to see it.   Won't fit in any common collimators, though.

Here the diode is mounted in the aixiz case, with shorting bar installed.  Jayrob, it does have the same pin conection as you have found with yours.  Do your diodes have the dotcode label shown here?

Click to expand...

drlava, to finally answer your question, you must be talking about the black 'square-ish' stamp between and above the pins. Yes, my diode has the same thing. Although I can't understand what it means. No matter. I know I'm probably not going to harvest one of these 2 X drives again...
Jay

Re: 4x Blu

adgmeijin said:

hi jayrob i am now using rog's 7805 driver, using 2 RCR123A total of 7.2 volts input. is it possible to run this BRLD burner using this circuit driver? if possible what was the maximum output i can do with this? it has also 100ohm trimpot and a 33ohm resistor to control the current. can you give me some idea about this? thanks.

Click to expand...

Your driver is just the 7805 voltage regulator and a resistor (or pot), right? That works for BR reader diodes, and even then not for all of them...
I've heard some of them need more than 5V for 39mA, in which case the 7805 won't suffice anymore.. Even so, it's not really a driver, since it's not current regulated.. But since the reader diodes don't heat up much, current regulation is not that important..


From what i understand, the BR burner diodes also need more than 5V, and since they are burners you would want current regulation anyway...
Otherwise, as they would heat up and their resistance would decrease, the current would go up. So no, you can't use the 7805 for BR burners...


I understand, that you want to make your laser small, and don't want to use 3 Li-Po cells, but the only way around that is a current regulated boost or buck converter. Dr. Lava is currently making one specifically for Blue Rays (don't know which one) and we are discussing similiar ones on this thread:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1194375801

Re: 4x Blu

Hey guys! the first laser module is complete. Divergence is less than 0.6mrad. here is a photo of the dot at 35 ft. Speckle is definitely apparent on walls, etc. The oblong-ness is caused by slight lens aberration.
This module will be sold in order to fund future research.