Lava Micro FlexDrive Driver (lavadrive2) fits pens

[tomcat]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

this the best diy driver as of yet and i cant think of improvements... only robins driver beats this in complexity/fitness for usage (thats for scanner lasers though)

 

[roSSco]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

ok if this is the case ill take two then please.

Hey andy. I noticed that your avatar is ~10MB in size and decided to resize it for you. The new one is <700kb

 

[roSSco]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

This shows how much smaller it is. Sorry for the hijack DL, but I can't attach pics in a PM and didn't want to bother rehosting.

 

[daguin]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

These drivers are buck or boost current regulators that can run on anything from 2 1.5V cells to a li-ion 18650. Input voltage range 2.5V to 5.5V. High efficiency up to 90% power conversion. They have a pot so current is adjustable to suit your needs. Two current ranges: (32-200mA+) (100-500mA). There is a soft start and startup delay of 1 second when you first turn it on; subsequent turn-ons in a short period do not have this delay.

Mine arrived today. Thanks. Only things left to wait for now is the diodes.

Then the big leap :-/

Peace,
dave

 

[SenKat_Stonetek]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Mine arrived as well, thanks !

 

[iewed]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Just to confirm, I can run a PS3 BR diode with 2 AA's using this driver, right?

 

[drlava]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

yep!

 

[TheMonk]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

how about 6v with 125mA or higher current using 2x 1.5v AAA?

 

[drlava]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

how about 6v with 125mA or higher current using 2x 1.5v AAA?

I just tested and yes, it can.  Not much higher than 125mA with a boost from 3V to 6V, but it can do it.

 

[TheMonk]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

[quote author=TheMonk link=1209418066/15#23 date=1209705241]how about 6v with 125mA or higher current using 2x 1.5v AAA?

I just tested and yes, it can.  Not much higher than 125mA with a boost from 3V to 6V, but it can do it.[/quote]

Thanks. I would like two drivers, please see your PM.

 

[TheMonk]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

payment send for two blu drivers. [smiley=dankk2.gif]

 

[joenobody]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Hey Dr.

PM Sent for 2 as well.

One Low Current,
One High Current.

Thanks!
Joe

 

[danq]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

just received mine in the mail. Haven't powered them up yet, but wow, are they small! - having them in person is really different than a photo or drawing. Part of what makes them seem small is I think how uncrowded and neat the board is - nice job!

DanQ

 

[woop]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

hey drlava, is the ground pin on the diode at ground potential?
ie, are the two ground pins connected together?
and you wanna post a schematic?

 

[F1SportsFan]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

I was looking at one of these drivers to run a Blu Ray LD, powered by a single 10440 cell (3.6V 305mA). Do you see any problems with that set-up? I am not sure if that will be enough current to run the LD for very long.

If everything sounds good, definitely count me in! Those circuits look great!

 

[IgorT]

Re: Lava Micro FlexDrive Driver (lavadrive2) fits

I was looking at one of these drivers to run a Blu Ray LD, powered by a single 10440 cell (3.6V 305mA). Do you see any problems with that set-up? I am not sure if that will be enough current to run the LD for very long.

Since the voltage will be stepped up, the current draw on the battery will be slightly higher than the current through your blue ray. Is it a PS3 Blue Ray? If it is, and you drive it at 42mA, the average current draw on your battery will be around 64mA - less when full, more when empty. It's going to work for almost 4 hours and 45 minutes on a 305mAh battery.


The max discharge rate for Li-Ions is 2C. With a PS3 sled Blue Ray, you have nothing to worry about. In fact, your little 10440 could even drive a Blue Ray writer diode with this driver, and only the battery life would be shorter (still almost two hours).


You just need to be careful not to overdischarge it, since it is unprotected. Due to the way this driver works, you would not notice any decrease in performance, until it was too late for the battery. I use special LEDs, that turn on when the voltage drops under 3V and give me a warning this way.