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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 04-30-2008, 05:01 PM #1
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
just_here_2_learn just_here_2_learn is offline
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
Default Whats wrong with this pic?

Hey fellas look I'm working on building my first laser and I followed the how to build a laser diode driver video on metacafe. I got everything done and hooked up to my power source and my diode. Bellow is a pic of what I'm lookin at. The diode is in the aiziz module but I'm not sure if its centered perfectly. Its also not completely pushed into the top half of the module, just enough not to come out when I pull on it. I have tried using 9volt duracell and energizer batteries I have tried two AAA with a combined voltage of 3volts and I have tried six volts. I am getting a small red dot when I power it up but its not nearly as strong as it should be for a 16X diode and it certainly isn't gonna burn anything anytime soon :'(. How do I get more power out of this? Do I need a more powerfull battery, should I remove one of the parts on the circuit board? Please help!
Attached Thumbnails
Whats wrong with this pic?-whatswrong.jpg  


just_here_2_learn is offline   Reply With Quote







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







Old 04-30-2008, 05:25 PM #2
rog8811's Avatar
Class 3B Laser
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
rog8811 rog8811 is offline
Class 3B Laser
rog8811's Avatar
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
Default Re: Whats wrong with this pic?

Your picture is a bit fuzzy, I have marked which wires should join to others in yellow, can you confirm that this is how it is connected?

As that is a red LD you need to swap that 9v for at least 7.2 volts of AA batteries or a couple of CRC123A's. The 9v will not put out enough ma's over any period of time.
Have you tested the circuit as suggested here?
http://www.laserpointerforums.com/fo...num=1197651171

Give us some figures from the testing then we may be able to help a bit more.

Regards rog8811
Attached Thumbnails
Whats wrong with this pic?-like_this-q.jpg  
__________________
See all of my videos on Vimeo
http://www.vimeo.com/4454150

Lots of tutorials and information on lasers
http://www.rog8811.com/

In the land of the blind the one eyed man..... is most likely holding the laser
rog8811 is offline   Reply With Quote
Old 04-30-2008, 05:32 PM #3
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
just_here_2_learn just_here_2_learn is offline
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
Default Re: Whats wrong with this pic?

Hey I have all of my corrections made correctly. As for the batteries. I have 4 CR123As at my house and I can use those but I would I connect the two wires here to four of these batteries? Is there some kind of holder for these batteries that I could use? Thanks for the help because I thought my power source was the issue as I had only seen CR123A or AA batteries used for this but I wasn't sure how to connect the two wires to multiple batteries. If you know of a place where I could get the CR123A battery holder within a week that would be fantastic!
just_here_2_learn is offline   Reply With Quote
Old 04-30-2008, 05:39 PM #4
drlava's Avatar
Class 3R Laser
 
Join Date: Mar 2007
Posts: 1,152
Rep Power: 71
drlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond repute
Send a message via AIM to drlava
drlava drlava is offline
Class 3R Laser
drlava's Avatar
 
Join Date: Mar 2007
Posts: 1,152
Rep Power: 71
drlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond reputedrlava has a reputation beyond repute
Send a message via AIM to drlava
Default Re: Whats wrong with this pic?

A blown diode has a faint red glow (small red dot) that isn't an even pattern with the brightest spot in the center. Also, it is important that the diode be pressed in all the way to the module so the heat can be drawn out of it most efficiently. Otherwise it could overheat and blow the diode. Finally the module itself needs to be heatsunk if you're going to run it for longer than a few seconds at a time.
__________________
My Laser Components Site
drlava is offline   Reply With Quote
Old 04-30-2008, 05:46 PM #5
rog8811's Avatar
Class 3B Laser
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
rog8811 rog8811 is offline
Class 3B Laser
rog8811's Avatar
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
Default Re: Whats wrong with this pic?

20 seconds on the forum search found this....
http://www.digikey.com/scripts/DkSea...e=BC2%2F3AE-ND

Or you can do as I do if I am in a hurry, take a file to the ends of the batteries, file through the plating, solder a wire between the + end of one battery to the - end of another. A wire from the unused + to a switch of some sort (any switch will do) wire from the other side of switch to your bread board, then the last wire from the unused - to the bread board and you are good to go....

Have you tested the circuit as suggested, it is important to do so, then you can diagnose the problem more easily.

Regards rog8811

*Edit, I found this picture I did for someone else which shows how to wire it up (switch is in neg lead not pos as described above either way is OK)

Attached Thumbnails
Whats wrong with this pic?-wire_bats01.jpg  
__________________
See all of my videos on Vimeo
http://www.vimeo.com/4454150

Lots of tutorials and information on lasers
http://www.rog8811.com/

In the land of the blind the one eyed man..... is most likely holding the laser
rog8811 is offline   Reply With Quote
Old 04-30-2008, 11:34 PM #6
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
just_here_2_learn just_here_2_learn is offline
Member
 
Join Date: Apr 2008
Posts: 33
Rep Power: 0
just_here_2_learn is on a distinguished road
Default Re: Whats wrong with this pic?

I can't test my board because I dont have 4 diodes but I tried hooking up two CR123A batteries and still had basically the same effect. I have a clear dot (in the dark) but as I move closer or farther the dot gets larger and blury. Is there any way I can get more power out of this? By the way, in the guide that I used I have a 25 ohm pot in place of the 100 ohm resistor that you had in your pic. would that change anything? also would I get any more power if I were to remove my 35 volt capacitor? This is a mess. Thanks for the help.
just_here_2_learn is offline   Reply With Quote
Old 05-01-2008, 12:24 AM #7
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
chido chido is offline
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
Default Re: Whats wrong with this pic?

You don't need the 4 diodes, you use those to make sure the driver is working properly before using the actual LD. But since you already used the LD and we know it's working, get a 1 ohm resistor and place it between the positive leg of your diode and the positive wire coming from the driver, then grab your multimeter, set it to mV and place the positive probe between the resistor and the driver and the negative probe between the resistor and the LD. Then just measure the current. In this case 1mV = 1mA.

Quote:
but as I move closer or farther the dot gets larger and blury
Have you tried focusing it?

Quote:
in the guide that I used I have a 25 ohm pot in place of the 100 ohm resistor that you had in your pic. would that change anything?
You'll be fine, in fact, the 25 ohm is better since it won't be as sensitive as the 100 ohm pot.

Quote:
also would I get any more power if I were to remove my 35 volt capacitor?
Don't remove the capacitor, it helps prevent spikes from getting to the LD and it won't give you more power if you remove it.
chido 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 01:03 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