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 > Drivers, Test-load, Power Supply, & Batteries



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



Reply
 
LinkBack Thread Tools Display Modes
Old 06-10-2016, 10:08 PM #1
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
maxvi22 maxvi22 is offline
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
Default Driver for cnc DIY

Hello everybody,

I try to build laser driver for my laser engraver with a dvd burner.
I made this following plan:



i chose red laser from dvd burner with 320mA therefore R1= 3,9ohm, 1watts.

After several try, the diode doesn't engrave paper... Have you got any ideas why ?

And last question, how to buy laser 650nm and 250-300mW please ?

Sorry for my bad English..
thanks all

Max
Attached Thumbnails
Driver for cnc DIY-diodelaserff.png  



Last edited by maxvi22; 06-10-2016 at 10:16 PM.
maxvi22 is offline   Reply With Quote







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







Old 06-10-2016, 11:05 PM #2
ElectricPlasma's Avatar
Super Moderator
 
Join Date: Dec 2015
Location: Southern Ontario, Canada
Posts: 1,358
Rep Power: 40460
ElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond repute
ElectricPlasma ElectricPlasma is offline
Super Moderator
ElectricPlasma's Avatar
 
Join Date: Dec 2015
Location: Southern Ontario, Canada
Posts: 1,358
Rep Power: 40460
ElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond repute
Default Re: Driver for cnc DIY

Do you have a picture of your project?

I can't tell from just this if you've factored in a lens. You need to focus the laser to what you'd like to burn, and use something darker such as cardboard, the paper is white and will reflect most if not all of the red light coming from your diode. You'll need a bit of heatsinking for the diode too.
__________________

I'm selling some custom machined hosts. Click here to take a look!
__________________

-=====[]
────────────────────────────────────────✺

632.8nm: Melles Griot HeNe, 1mW
532nm: Custom made GITD Pocket laser: ~133mW
532nm: Chrome laser pen: ~50mW
532nm: eBay 303: ~60mW
465nm: 07E Laser Box Build: 4W
462nm: M462 Pocket Build: 1W
450nm: Stainless Steel NUBM44 Handheld: 6.8W
445nm Pocket Series from Podo (Sanwu): 500mW
405nm: eBay pen

Keep yourself safe. *link*
-=====[]
────────────────────────────────────────✺
ElectricPlasma is offline   Reply With Quote
Old 06-11-2016, 09:21 AM #3
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
maxvi22 maxvi22 is offline
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
Default Re: Driver for cnc DIY

Hi ElectricPlasma,

Thanks for you help. I forgot specifying i have this diode housing:
2pcs 12x30mm Metal Housing Case FOR 5 6mm TO 18 Laser Diode W 200nm 1100nm Lens | eBay <=link
Maybe this diode housing is bad ? (With max focus, i have a still big red point).

I don't have laser picture because my diode is break (i try 400mA ...)
My problem from focus laser housing or laser diode from dvd burner...

Now the challenge is to find a diode laser for engrave....
maxvi22 is offline   Reply With Quote
Old 06-11-2016, 05:23 PM #4
ElectricPlasma's Avatar
Super Moderator
 
Join Date: Dec 2015
Location: Southern Ontario, Canada
Posts: 1,358
Rep Power: 40460
ElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond repute
ElectricPlasma ElectricPlasma is offline
Super Moderator
ElectricPlasma's Avatar
 
Join Date: Dec 2015
Location: Southern Ontario, Canada
Posts: 1,358
Rep Power: 40460
ElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond reputeElectricPlasma has a reputation beyond repute
Default Re: Driver for cnc DIY

Quote:
Originally Posted by maxvi22 View Post
Hi ElectricPlasma,

Thanks for you help. I forgot specifying i have this diode housing:
2pcs 12x30mm Metal Housing Case FOR 5 6mm TO 18 Laser Diode W 200nm 1100nm Lens | eBay <=link
Maybe this diode housing is bad ? (With max focus, i have a still big red point).

I don't have laser picture because my diode is break (i try 400mA ...)
My problem from focus laser housing or laser diode from dvd burner...

Now the challenge is to find a diode laser for engrave....
You may have your lens on the wrong way if you can't seem to focus it to get a pinpoint focus. If you're engraving I'd use a Blu-ray diode (405nm) as it burns better because the smaller wavelength is easier to penetrate surfaces better than 650nm.

If you're looking for diodes, check out DTR and his laser shop here on the forum.
__________________

I'm selling some custom machined hosts. Click here to take a look!
__________________

-=====[]
────────────────────────────────────────✺

632.8nm: Melles Griot HeNe, 1mW
532nm: Custom made GITD Pocket laser: ~133mW
532nm: Chrome laser pen: ~50mW
532nm: eBay 303: ~60mW
465nm: 07E Laser Box Build: 4W
462nm: M462 Pocket Build: 1W
450nm: Stainless Steel NUBM44 Handheld: 6.8W
445nm Pocket Series from Podo (Sanwu): 500mW
405nm: eBay pen

Keep yourself safe. *link*
-=====[]
────────────────────────────────────────✺
ElectricPlasma is offline   Reply With Quote
Old 06-13-2016, 12:49 AM #5
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,439
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,439
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Driver for cnc DIY

White paper could be a problem indeed. Red diode light is reflected off that very well, and you may find it problematic to cause any burning even if you have a single mode diode putting out 300 mW or so focussed to a small spot.

405 nm blu ray diodes work a lot better on many types of paper. The short wavelength causes the paper to fluoresce, and it converts some light to heat in that process. Once it gets hot it starts to discolor a bit and then it will absorb much more light.

You can see this with moderately powered lasers on paper: If you defocus the beam a bit, you get a situation where it takes quite a while for anything to happen. As soon as the paper starts to discolor it will absorb more light and the beam chews straight though very quickly.

With a red laser this could take ages as so little light is absorbed. It's not unrealistic for a beam to be on a piece of paper for a minute or so seemingly doing nothing, and then puching through within a second as soon as the paper gets the slightest bit of browning.

To prevent all of this you could start with colored paper that absorbs some of the light well, and you should be engraving/charring it at a good rate right away.
Benm is online now   Reply With Quote
Old 06-13-2016, 07:04 AM #6
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
maxvi22 maxvi22 is offline
Junior Member
 
Join Date: Jun 2016
Posts: 3
Rep Power: 0
maxvi22 is on a distinguished road
Default Re: Driver for cnc DIY

Hello,

Thank you very much for your assistance.
Good basis for start, can i buy this diode? :
https://sites.google.com/site/dtrlpf...5nm-16x-diodes

And follow this plan:


(for 40€, i'm taking certain precaution..)


I think you're right, blu-ray diode is a good idea. thank's for the lesson about this diode.
Max
Attached Thumbnails
Driver for cnc DIY-driverlaser.gif  

Last edited by maxvi22; 06-13-2016 at 07:39 AM.
maxvi22 is offline   Reply With Quote
Old 06-13-2016, 11:11 PM #7
benmwv's Avatar
Class 3R Laser
 
Join Date: Sep 2010
Location: wv
Posts: 1,389
Rep Power: 152
benmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond repute
benmwv benmwv is offline
Class 3R Laser
benmwv's Avatar
 
Join Date: Sep 2010
Location: wv
Posts: 1,389
Rep Power: 152
benmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond reputebenmwv has a reputation beyond repute
Default Re: Driver for cnc DIY

Make sure you get the glass lens upgrade when you buy the diode. High power 405nm will tear up that acrylic lens.

I think you can get rid of the transistor in the circuit if you hook it up like this:



So a high signal would turn it off and a low signal turns it on. Alternatively remove the diode between the arduino and lm317 and switch between high for on and high impedance (input mode) for off. I didn't test this but it should work considering how the lm317 functions. Basically it looks for 1.25v on the adj pin, if the voltage is higher is takes the diode current down until it achieves that and if its lower it takes the diode current up. 5v from the on the adj pin from the arduino will fully turn it off.

It should work just fine how you have it as well, this is just another option. If you decide to do it this way try it out on the breadboard first with an led or something to make sure it works.
Attached Thumbnails
Driver for cnc DIY-lm317-cnc.png  
benmwv 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 03:03 AM.


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