Laser Pointers



Welcome to Laser Pointer Forums!

Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes



Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Drivers, Test-load, Power Supply, & Batteries

Sci-Fi-Lasers
Reply
 
LinkBack Thread Tools Display Modes
Old 12-23-2011, 06:47 AM   #1
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Lightbulb The New Buck/Boost High Output Driver

Um... I DID IT!!!!!!!!!! YESSSSSSSSSSSSS!!!!!!!

I kept the components as minimum as possible and simple. I got a board with 16.6x15.5 size.. But my final pcb should end up a little smaller than my protoboard (which is made by hand).
No pot for current settings. Fixed resistors are used instead. For pot I need more components on the board which are unnecessary!

so ..

specs in boost mode :

constant current output
2.1A max at Vin=>=3.6V & Vo<=5.0V
1.5A at Vin>=3.6V & Vo=6V
input - you should get one of those 2800-3000mAh 4.2V Lithium Cells I am waiting for mine from Larry to test it with battery instead of bench PSU but as long as the battery can deliver 4A it's good!
CHEAP CHINESE BATTERIES WON'T DO! ALREADY TESTED WITH TRUSTFIRE - PROTECTION KICKS IN! ALSO TESTED WITH NON-PROTECTED CHEAP ONES.. 1A at the output max

To regulate the output at the 1.8A current - a 3.6V is desirable for minimum input when using 445nm diode.
as the batteries starts discharging 3V will still regulate the current with around 300mA lower if the battery can handle the current.

specs in buck mode:
constant current output
max output tested 2.5A @ 4.5V (may go to close to 3A not tested)
max input in buck mode should be 5.5V (6V is absolute maximum - not recommended)

common specs:
input voltage - 2.9-5.5V (3.6V for ~1.8A@4.5Vout)
max output voltage - 6V (but current will drop)
when heatsinked it can run nicely for long periods of time.
overvoltage/overtemp protection

After consistent test on my test load with 2,3,4, and 5 rectifying diodes
At 6V(max) output the max output current drops slightly. ~1.5A in boost
At <=5.5V output current is steady 1.75A (as set) in boost!

At 3.3V output the current can go above 2A in boost and around 3A in buck!

I hooked my diode straight on the output with risk to kill it but I had to try it in REAL conditions. I put my DMM in Amper meter mode and hooked it between the + of the driver and diode. The big direct press heatsink is especially made for this test

In some of my tests the diode survived a 1.95A current. O.o good thing I didn't set it higher the driver was in buck mode. In boost mode I have tested it til 2.1A. It might go higher but it's unlikely.

I spent quite some time trying different inductors and this pretty much is the optimum one and size is PERFECT too.

I present a video of it in action with bench supply, A140 laser diode and current and voltage readings of input and outout. I simulated the battery voltage drop down to 2.8V and up to 4.2V.


I will update this thread with a battery powered operation when I get the... battery itself maybe after new year... (post companies.. shhish )

So far no glitches at the output. Driver is steady. Diode still lives. I am happy. Happy holidays to all



p.s. I will make a few commercial boards after new year if anyone is interested. I can tell you the price after I do some math and figure all the costs.

Last edited by foulmist; 03-24-2012 at 09:28 AM. Reason: updated specs
foulmist is online now   Reply With Quote


lpp

Green Laser Companies

Blue Laser Companies

Red Laser Companies


Old 12-23-2011, 06:50 AM   #2
Class 3B Laser
 
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Scottsdale, AZ
Posts: 3,805
Rep Power: 224
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

Incredible! You just killed my market :P Good job and good luck!
Wolfman29 is online now   Reply With Quote
Old 12-23-2011, 07:03 AM   #3
Class 3B Laser
 
bobhaha's Avatar
 
Join Date: May 2009
Location: Sydney, Australia
Posts: 3,240
Rep Power: 268
bobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

4.4V output at 1.75A with 3.6V 3.44A input gives you ~58% efficiency.. are my calculations correct?

So this is only able to be put in to buck OR boost mode at any one time? Just wondering....

Also what size SMD's are you using? They look pretty large. Remember when you scale it down your heat dissipation becomes a bigger issue.
__________________
Lasers!
10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
Eagle Pair Red OD4+ goggles
Scopeguy20 Blublockers for 405nm lasers!

* indicates a review has been done, on this item.

Check out my How to Build a Selectable Dummy Load Thread!

Last edited by bobhaha; 12-23-2011 at 07:04 AM.
bobhaha is offline   Reply With Quote
Old 12-23-2011, 07:16 AM   #4
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Quote:
Originally Posted by bobhaha View Post
4.4V output at 1.75A with 3.6V 3.44A input gives you ~58% efficiency.. are my calculations correct?
isn't that 62%... at 5.5V its around 77%... hmm I may need to make some improvements.


Quote:
Originally Posted by bobhaha View Post
So this is only able to be put in to buck OR boost mode at any one time? Just wondering....

Also what size SMD's are you using? They look pretty large. Remember when you scale it down your heat dissipation becomes a bigger issue.
Um no It can work boost/buck at the same time.
The sense resistors are 1206, caps are 0805, I have tried 0805 resistors, work ok, but I had bigger for that current.

Last edited by foulmist; 12-23-2011 at 07:21 AM.
foulmist is online now   Reply With Quote
Old 12-23-2011, 08:25 AM   #5
Junior Member
 
Join Date: Nov 2011
Location: Cookeville, TN
Posts: 14
Rep Power: 0
rfhv will become famous soon enoughrfhv will become famous soon enough
Default Re: The New Buck/Boost High Output Driver

I hope you don't mind me asking if this is a TPS63020 based driver. I did one that is 17.7 x 13.7 mm. Mine is single sided and has a solid ground plane on the back side. I also have open circuit protection, low battery protection, and reverse polarity protection.

I have yet to do full tests but I am currently using this driver to push 1.3A into an M140 diode. I did a second board revision and have sent it off for to be made. I intend to post after new years with a build report for this driver and tests.

Hearing the results you got with this driver (if you are using the TPS63020) gives me lots of hope that I can get mine to work well.

Last edited by rfhv; 12-23-2011 at 08:27 AM.
rfhv is offline   Reply With Quote
Old 12-23-2011, 08:45 AM   #6
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Quote:
Originally Posted by rfhv View Post
I hope you don't mind me asking if this is a TPS63020 based driver. I did one that is 17.7 x 13.7 mm. Mine is single sided and has a solid ground plane on the back side. I also have open circuit protection, low battery protection, and reverse polarity protection.

I have yet to do full tests but I am currently using this driver to push 1.3A into an M140 diode. I did a second board revision and have sent it off for to be made. I intend to post after new years with a build report for this driver and tests.

Hearing the results you got with this driver (if you are using the TPS63020) gives me lots of hope that I can get mine to work well.
yes It's the TPS63020, it has solid ground on the back side as well
open circuit, low battery protection are both BUILT in the IC

what kind of efficiency do you get... I have yet to determine why mine is so low .. I should be getting around 80-85%....
foulmist is online now   Reply With Quote
Old 12-23-2011, 09:17 AM   #7
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

I think the inductor here is the main reason for such low efficiency... I will order more parts to try out. the caps might not be enough too.... I will try bigger values. and possibly lower ESR

If anyone has any suggestions please share

Last edited by foulmist; 12-23-2011 at 09:22 AM.
foulmist is online now   Reply With Quote
Old 12-23-2011, 09:35 AM   #8
rhd
Class 4 Laser
 
rhd's Avatar
 
Join Date: Dec 2010
Posts: 7,953
Rep Power: 502
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

I am SO glad to see that you're going fixed-resistor. I'm not a fan *at all* of pots.

Congrats, this is fantastic!
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 12-23-2011, 09:46 AM   #9
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Quote:
Originally Posted by rhd View Post
I am SO glad to see that you're going fixed-resistor. I'm not a fan *at all* of pots.
yeah I don't like the pots too - way to easy to screw up
I just ordered some more components. I have to make this at least 80% efficient
foulmist is online now   Reply With Quote
Old 12-23-2011, 10:54 AM   #10
Class 3B Laser
 
lazeerer's Avatar
 
Join Date: May 2010
Location: CT
Posts: 3,629
Rep Power: 515
lazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

There is an old thread where someone used this IC i cant remember it. If I can find it ill shot you a PM foulmist. It might help out some with the inductor.

Nice work.


Its an Expensive driver though.
__________________


405nm 1013mW In Cree Z5 , 850mW LaserGLow Electra Mod , 583mW C3 BDR
445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
488nm 52mW OPSL SAPPHIRE 488-50, 59mW SS Melles Griot BCD-50&BCD-25 35mW
515nm 83mW Direct Green Diode Fully Custom Host
532nm 617mW RPL Style , 213mW CNI-PGL-III-A , 120mW DIY SS C3
589nm 130mW CNI-PGL-III-A
594nm 13mW CNI-PGL-III-C
632nm 4mW HeNe
635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
SPECTROMETER - 390nm to 980nm



All My Reviews, Tips & Mods Are Here Now: >Reviews<


Check Out My YouTube Video's Here:
http://www.youtube.com/user/Lazereer

Last edited by lazeerer; 12-23-2011 at 10:55 AM.
lazeerer is offline   Reply With Quote
Old 12-23-2011, 11:37 AM   #11
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Quote:
Originally Posted by lazeerer View Post
There is an old thread where someone used this IC i cant remember it. If I can find it ill shot you a PM foulmist. It might help out some with the inductor.

Nice work.


Its an Expensive driver though.
thanks bro, yeah I already gave a lot o-money just for trying different parts
I just ordered 5 different inductors and other caps to try out which sent me back 20 bucks
foulmist is online now   Reply With Quote
Old 12-23-2011, 05:34 PM   #12
Class 3B Laser
 
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,178
Rep Power: 237
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

4.2A at 2.6V. I can do dat!

Keep up the good work! thanks for the vid and showing what the current draw is for the Li-Ion range of voltages.
BShanahan14rulz is offline   Reply With Quote
Old 12-23-2011, 05:39 PM   #13
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Quote:
Originally Posted by BShanahan14rulz View Post
4.2A at 2.6V. I can do dat!

Keep up the good work! thanks for the vid and showing what the current draw is for the Li-Ion range of voltages.
It might take a while til I receive the new parts. Xmas and New Year and my supplier informed me that they are out of some of the items.... oh shoot .... I hope I can get them soon...
foulmist is online now   Reply With Quote
Old 12-23-2011, 06:23 PM   #14
Junior Member
 
Join Date: Nov 2011
Location: Cookeville, TN
Posts: 14
Rep Power: 0
rfhv will become famous soon enoughrfhv will become famous soon enough
Default Re: The New Buck/Boost High Output Driver

I got about 70% efficiency at 2A out if I recall. About the low battery protection: I used a TC54 with a threshold of 2.9V on the enable pin of the TPS63020. The TPS does have low voltage protection, but the cutoff is too low. By the time it turns off, your battery may already be destroyed.

How do people normally handle low battery protection on these? Maybe everyone uses protected cells? I am using some 26650 cells from battery space (the 4AH ones) with no protection and these work great.

Back to the TPS63020 driver. My inductor is on the large size. It is rated for 4.5A continuous and 7A saturation. It is part number DR74-2R2-R.
rfhv is offline   Reply With Quote
Old 12-23-2011, 07:28 PM   #15
Class 3R Laser
 
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 101
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: The New Buck/Boost High Output Driver

Mine is rated 5.6A and it is better than the others I tried but I know there is a better choice. I just have to find it

about the 70% - that's low too.. 85% can be achived at 3.6Vin and 4.5V@2A out! That will be my goal!

I guess protected cells should be used instead of non-protected with this IC.
I can't see a way to modify the undervoltage lockout threshold - it's set to 1.6Vmax. It can be made with sensing the input voltage and controlling the EN pin but that will take way more space.
foulmist is online now   Reply With Quote
Old 12-24-2011, 09:48 PM   #16
Class 3R Laser
 
sinner's Avatar
 
Join Date: Oct 2011
Location: Dubai, UAE
Posts: 2,493
Rep Power: 384
sinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond reputesinner has a reputation beyond repute
Default Re: The New Buck/Boost High Output Driver

WoaH !! Dude, You did it.. Now thats some driver your making ..Whats the Official Launch date?!
__________________
Sinner's Custom Laser Hosts
The Cypreus-EDC Series - All Copper Custom Laser Hosts and Prebuilt Kits.
The Cypreus-2x26650 IIIB - Coming Soon
sinner is online now   Reply With Quote
Reply


Database of Laser Pointer Companies




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f67/new-buck-boost-high-output-driver-69959.html
Posted By For Type Date
Briquet laser (2W) : Electro - Page 3 This thread Refback 10-10-2014 12:55 PM
Briquet laser (2W) : Electro - Page 3 This thread Refback 09-04-2013 02:40 PM
?????? ????????? ??? ??????? ?? 445?? ? 405?? (TPS61030) | ???????? 13 | LASERS.ORG.RU This thread Refback 03-08-2013 04:46 PM








Loading


laser pointer forums top

Sky






Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes









































All times are GMT. The time now is 12:42 PM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2014 Laser Pointer Forums, LLC