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Old 05-16-2008, 09:41 AM #65
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

So, lets say one is using two 3.6v rechargeables, which are actually more like 4.2v off the charger, would there be a way to drop the voltage enough (similar to what you did with the silicon diode) to be compatible with this driver?


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Old 05-16-2008, 10:35 PM #66
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Quote:
Originally Posted by IgorT
Interesting.. Looks like that 6x BR writer diode from Jayrob really must have changed or even become a short....
Yeah...somethings up with that dead diode. I tested the dead open can red diode, and adjusted the driver to 90mA's. Then I took your advice and soldered up a dummy load using 6 silicon diodes. They gave me 90mA's as well...
Jay

P.S. A single 3.6 volt battery, or 2 X 3.0 volt batteries with the silicon diode, gave the same 90mA's. What a great driver!
DrLava, I want more of these!
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Old 05-16-2008, 11:20 PM #67
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Jay, they'd make excellent drivers in your builds.. but that's probably what you are thinking
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Old 05-17-2008, 12:51 PM #68
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

The lava drive uses a LTC3538.
I must say, seems to me a excelent chip choice !

If you copy it instead of buying from Lava your a dumbSh#@ ;D

You can't hand solder up a DFN chip that runs Mhz and exact components...

I could be wrong, but it's a DCB DFN-8 package so......

Some chips are marked now with alpha-numerics to pleasure the board makers so it apears they have thier own factory OEM chip numbers I think.

Cheers Dr Lava

I got a tip: black sharpie your PC board then scratch out your circuit for minimum copper etch. Results: most heat sinking copper and minimum etch solution use. polution. Now to try using a 1064nm laser scanner expose PC copper instead of manual scratch out.
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Old 05-17-2008, 09:27 PM #69
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Hi guys, just posting to say the blu-ray drivers will be back in stock soon and the price will come back to normal.
Laserrod, I usually use copper pour area in the software, not sharpie if you order a driver you'll see the heat sinking copper is actually thought out on the design.
thanks!
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Old 05-18-2008, 06:25 PM #70
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

What was with the price anyway?
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Old 05-18-2008, 10:54 PM #71
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

I ordered my Blu-Ray driver on the 14th for $23 (shipped), will my driver arrive on time, or will I have to wait for the new supply?
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Old 05-19-2008, 01:57 PM #72
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Lava,

Ordered a Kenom barrel and ungraded to your fine Lavadrive. I hope it's your drive?

I'm working out a 3 amp. syc. buck TI SMD board chip for my 2 watt diodes.

My tip refered to quick non-CAD PC board prototypes
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Old 05-20-2008, 02:55 AM #73
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Recieved mine last week, They look great!! Thank you, I will be ordering another batch soon. I am waiting to machine some heatsinks for installing these, but I wanted to double-check something:
Quote:
Quote from woop on May 4th, 2008, 4:21pm:
hey drlava, is the ground pin on the diode at ground potential?
ie, are the two ground pins connected together?
Hi, yes the ground pin on the diode is at power ground potential. *You can use the case-connected diode ground as the ground for the circuit.
I will be installing a X-box (PHT) diode in a Stainless-steel flashlight, the same way Dr Lava did in his Kenom Barrel-(board soldered directly onto the diode, and a spring off the positive contact for the + battery terminal, flashlight host with a clicky). Now, if I understand it correctly, since I will be using the case as the ground, I do not have to hook anything at all up to the "Battery -" terminal?
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Old 05-20-2008, 03:04 AM #74
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Yes, dark, but remember that for the 360 diodes and 6x diodes the case pin is not the - pin so you have to connect them.
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Old 05-20-2008, 04:41 AM #75
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Bummer, I do have the pinout for the X-Box diode, but I am not quite sure what I would do different over a PS3 or a DVD burner diode, which pin is the "case-pin"?
Can I connect the pins together on the diode, or do I have to connect the case, (host), to the "Battery -" of the "Flex-Drive-board" with a wire or something? I really liked the idea of just the board with the positive-spring contacting the battery, is this still possible?
Sorry for the basic question.
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Old 05-20-2008, 05:10 AM #76
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Quote:
Originally Posted by Dark_Horse
Can I connect the pins together on the diode, or do I have to connect the case, (host), to the "Battery -" of the "Flex-Drive-board" with a wire or something?
Connecting the pins on the LD should work... at least I don't know any reason why it wouldn't. The pins are identified in a diagram posted in this thread.
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Old 05-20-2008, 03:26 PM #77
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

The case pin is the pin visibly connected to the case.

You can connect it to the - pin and you're good to go.
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Old 05-20-2008, 03:46 PM #78
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Perfect, Thanks "Doc"
If I remember correctly, the pin actually connected to the case, is the one labeled as the Photo-Diode? on the diagram, earlier in the thread, "peak of the triangle"-pin, otherwise not used.
Thanks,
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Old 05-20-2008, 04:58 PM #79
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

right. here's a modified diagram.
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Old 05-21-2008, 01:18 PM #80
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Default Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Perfect
Thank you to all, I think I have it figured out now. I have seen others connect a small wire from the Batt- on thew board, to the "case-pin" along the length of the board, now I know what that is all about.
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