Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 06-27-2016, 09:51 AM #1
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Help with laser build

Alright so I have built a linear driver using a LM1085 voltage regulator and 2x 1 ohm resistors in parallel using a m140 2w laser diode being ran by 3x 3.7v 2500mAh 18650 (from panasonic). (also has a cool missile launch style rocker switch )

Here's kind of a picture of what i have so far.. It's not pretty... This shows the underside. Imgur: The most awesome images on the Internet

So i went to test it out for the first time today and I'm having some problems and hoped someone could help me solve them.

When i turned it on the diode lit up but it was very weak? it shot out a dot at what it was hitting very focused in the center but a blue ring on the outside? like a target sign and you could not see the actual beam even when it was pitch black in the room. The batteries were fully charged (brand new first time being used) So I'm lost as to what the problem could be.


Amply is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 06-27-2016, 02:03 PM #2
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Re: Help with laser build

Batteries are in parallel too by the way
Amply is offline   Reply With Quote
Old 06-27-2016, 02:34 PM #3
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Help with laser build

Quote:
Originally Posted by Amply View Post
Batteries are in parallel too by the way

That's going to be part of your issue for a start. Linear supplies need an input voltage greater than the output voltage (Output voltage + dropout voltage). You're supplying 3.7-4.2V to the driver which needs to supply >4.5V. Try two of those Lithium batteries in series instead - that'll give you enough voltage. I'd also verify that the driver is working correctly using a test load - in order to avoid frying your diode with a driver that may not be working properly - always a good idea.

Once the driver has been verified to be working properly we can troubleshoot further if necessary.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-27-2016, 02:51 PM #4
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Re: Help with laser build

3 in series would be fine too? I want it to have some kind of run time
Amply is offline   Reply With Quote
Old 06-27-2016, 03:06 PM #5
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Help with laser build

Quote:
Originally Posted by Amply View Post
3 in series would be fine too? I want it to have some kind of run time
Then you want to use 4 - two in series in parallel with two in series. Adding a third one in series just makes the whole thing less efficient and won't improve run time - the extra energy will be dissipated as heat at the regulator. Such is life with linear regulators.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-27-2016, 03:11 PM #6
Gadget's Avatar
Class 2 Laser
 
Join Date: Dec 2013
Location: Dallas, TX
Posts: 278
Rep Power: 1466
Gadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond repute
Gadget Gadget is offline
Class 2 Laser
Gadget's Avatar
 
Join Date: Dec 2013
Location: Dallas, TX
Posts: 278
Rep Power: 1466
Gadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond repute
Default Re: Help with laser build

No, the extra cells voltage would just be turned into heat in the regulator. A linear driver NEEDS two cells in series to drive an M140. If you need more runtime, you'll need a 2s2p cell configuration.

-G

(Oops...was typing this as diachi posted his)
__________________
Wave upon wave of Demented Avengers marched cheerfully out of obscurity into The Dream!



Before you get yourself in trouble, read this!

Some pen, gas, and borg-host lasers
Projector, controller, fogger
Radiant X4 LPM
Two Eagle Pair 190-540 & 900-1700 OD4+ 20% VLT

Last edited by Gadget; 06-27-2016 at 03:12 PM.
Gadget is offline   Reply With Quote
Old 06-27-2016, 03:14 PM #7
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Help with laser build

Quote:
Originally Posted by Gadget View Post
No, the extra cells voltage would just be turned into heat in the regulator. A linear driver NEEDS two cells in series to drive an M140. If you need more runtime, you'll need a 2s2p cell configuration.

-G

(Oops...was typing this as diachi posted his)

Gotta be quicker next time!

+rep
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-27-2016, 03:28 PM #8
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Re: Help with laser build

Oh i was confused because of this LM1085 DIY Driver
That's the driver I built.
Is there a chance that some of my components were damaged from me running it as 3x in parallel?
Also could you draw up a example schematic I'm not understanding how you can have 2 series and 2 parallel being hooked up.
Amply is offline   Reply With Quote
Old 06-27-2016, 03:35 PM #9
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Help with laser build

Quote:
Originally Posted by Amply View Post
Oh i was confused because of this LM1085 DIY Driver
That's the driver I built.
Is there a chance that some of my components were damaged from me running it as 3x in parallel?

No - but always worth testing the driver is functioning properly before hooking up the diode.

Also could you draw up a example schematic I'm not understanding how you can have 2 series and 2 parallel being hooked up.

A better understanding of electronics may be good before you proceed - sounds like you don't have much experience with electronics if you're having trouble with that or you are misunderstanding us.

Put two cells in series in parallel with another two cells that are also in series.


Like this:


5 Characters minimum... Doesn't include quotes.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-27-2016, 09:43 PM #10
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Re: Help with laser build

omg it works!!! it caught my bathroom wood trim on fire though...
Amply is offline   Reply With Quote
Old 06-27-2016, 09:58 PM #11
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,001
Rep Power: 36222
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Help with laser build

Quote:
Originally Posted by Amply View Post
omg it works!!! it caught my bathroom wood trim on fire though...
Great! Enjoy, stay safe!
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-27-2016, 10:17 PM #12
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Amply Amply is offline
Junior Member
 
Join Date: Jul 2015
Location: United States, Ohio
Posts: 21
Rep Power: 0
Amply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to beholdAmply is a splendid one to behold
Default Re: Help with laser build

Thank you for your help!
Amply is offline   Reply With Quote
Reply





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











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 06:54 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC