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 08-18-2013, 09:53 PM #17
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

I'll give that another try, but I don't want to un solder the ttl positive input if I don't have to


superh90x is offline   Reply With Quote







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







Old 08-18-2013, 10:40 PM #18
Kookapeli's Avatar
Class 3R Laser
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Kookapeli Kookapeli is offline
Class 3R Laser
Kookapeli's Avatar
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Default Re: my driver isnt giving the right current?

the TTL uses up to 5v extra, this is to turn the driver on and it needs another 3.7v to run the LD. 9V batts don't have enough current to run the diode so the power will sag
__________________
Never Gets tired of popping baloons, lighting matches and burning thru black plastics bags

Lasers Owned


100mW Rayfoss 532nm
5 mW WL Core 532nm
~130mW Mini Pocket 650
~300mW Cree Q5
~500mW Trustfire TR-801 638
~1.2W Cree Q5 445nm
New LPF'ers Please Read THIS
Where to buy laser components/kits from
I Want to build a Laser
Kookapeli is offline   Reply With Quote
Old 08-19-2013, 12:36 AM #19
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

So is 3.7 THROUGH the diode okay?
superh90x is offline   Reply With Quote
Old 08-19-2013, 05:04 AM #20
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

bumping, so I don't want to de-solder, if I took out one of the cells in the 9 volt, it would bring it to like 7.5, which should be good I think, but I want someone to agree and say its a good idea, because it probably isnt
superh90x is offline   Reply With Quote
Old 08-19-2013, 05:06 AM #21
NKO29's Avatar
Class 2M Laser
 
Join Date: Jun 2013
Location: Sydney, Australia
Posts: 871
Rep Power: 108
NKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond repute
NKO29 NKO29 is offline
Class 2M Laser
NKO29's Avatar
 
Join Date: Jun 2013
Location: Sydney, Australia
Posts: 871
Rep Power: 108
NKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond reputeNKO29 has a reputation beyond repute
Default Re: my driver isnt giving the right current?

Taking apart a battery is NEVER a good idea! Just get some lower voltage batteries.
NKO29 is offline   Reply With Quote
Old 08-19-2013, 05:16 AM #22
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

that's what I thought, so some 3.7 volt batteries then? or perhaps 5 AAA? I wouldn't mind suggestions
superh90x is offline   Reply With Quote
Old 08-19-2013, 05:29 AM #23
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

or I could leave in a rectifier diode and drop .7 volts, but then i'd need to get another one for my dummy load, i'll try 5 AAA
superh90x is offline   Reply With Quote
Old 08-19-2013, 08:18 AM #24
Kookapeli's Avatar
Class 3R Laser
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Kookapeli Kookapeli is offline
Class 3R Laser
Kookapeli's Avatar
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Default Re: my driver isnt giving the right current?

Why don't you stop using the TTL as suggested and use 3AAA's it's not that hard to de solder to try it, just humor me
__________________
Never Gets tired of popping baloons, lighting matches and burning thru black plastics bags

Lasers Owned


100mW Rayfoss 532nm
5 mW WL Core 532nm
~130mW Mini Pocket 650
~300mW Cree Q5
~500mW Trustfire TR-801 638
~1.2W Cree Q5 445nm
New LPF'ers Please Read THIS
Where to buy laser components/kits from
I Want to build a Laser
Kookapeli is offline   Reply With Quote
Old 08-19-2013, 08:21 AM #25
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

when its not 4:20 am i'll try it again, but I swear it didn't work the first time, if it works I think I'll be able to label myself as crazy
superh90x is offline   Reply With Quote
Old 08-19-2013, 08:56 AM #26
Kookapeli's Avatar
Class 3R Laser
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Kookapeli Kookapeli is offline
Class 3R Laser
Kookapeli's Avatar
 
Join Date: May 2010
Location: North West, UK
Posts: 1,254
Rep Power: 61
Kookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond reputeKookapeli has a reputation beyond repute
Send a message via Skype™ to Kookapeli
Default Re: my driver isnt giving the right current?

but there is a possibility you've fried the driver putting 9V through it

My advice is start from scratch, use the other driver, fresh diode and don't use the TTL and use 3 AAAs don't run the driver without the test load and remove the batt contacts before you remove everything else, also short the LD wires on the driver to dissipate any charge left in the cap after you've set the current on the driver
__________________
Never Gets tired of popping baloons, lighting matches and burning thru black plastics bags

Lasers Owned


100mW Rayfoss 532nm
5 mW WL Core 532nm
~130mW Mini Pocket 650
~300mW Cree Q5
~500mW Trustfire TR-801 638
~1.2W Cree Q5 445nm
New LPF'ers Please Read THIS
Where to buy laser components/kits from
I Want to build a Laser
Kookapeli is offline   Reply With Quote
Old 08-19-2013, 02:15 PM #27
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

I tried your advice, just now, and as before with 3AAA no TTL, the board gives no output
superh90x is offline   Reply With Quote
Old 08-19-2013, 02:41 PM #28
Leodahsan's Avatar
Class 3R Laser
 
Join Date: Aug 2010
Location: Rio Grande do Sul, Brazil
Posts: 2,088
Rep Power: 165
Leodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond repute
Leodahsan Leodahsan is offline
Class 3R Laser
Leodahsan's Avatar
 
Join Date: Aug 2010
Location: Rio Grande do Sul, Brazil
Posts: 2,088
Rep Power: 165
Leodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond repute
Default Re: my driver isnt giving the right current?

Did you tried to attach TTL to +Vcc? TTL = Transistor-Transistor Logic, or, in your language, Turns The Laser-on.

edit: ie when its attached to Vcc, the output is ON, when its attached to GND, the output is off. When its unattached... it varies from board to board, and from logic to logic used.

Last edited by Leodahsan; 08-19-2013 at 02:44 PM.
Leodahsan is offline   Reply With Quote
Old 08-19-2013, 02:43 PM #29
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

I'm sticking with the 9 volt and using a rectifier diode at the end to reduce the volts to a modest 2.8 and keeping the current at 340 (which I found out is the max my diodes should have and it says in the ebay page that operating current is 205, but then it says <340, meaning less than 340, so live fast die young? I don't know, should I lower the current?)
superh90x is offline   Reply With Quote
Old 08-19-2013, 02:45 PM #30
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

Yes I did, that's how I've gotten the results I have, but with 3 AAA batteries I couldn't get results I needed because it take around 5V to turn on the TTL (or so I've been told)
superh90x is offline   Reply With Quote
Old 08-19-2013, 02:46 PM #31
Leodahsan's Avatar
Class 3R Laser
 
Join Date: Aug 2010
Location: Rio Grande do Sul, Brazil
Posts: 2,088
Rep Power: 165
Leodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond repute
Leodahsan Leodahsan is offline
Class 3R Laser
Leodahsan's Avatar
 
Join Date: Aug 2010
Location: Rio Grande do Sul, Brazil
Posts: 2,088
Rep Power: 165
Leodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond reputeLeodahsan has a reputation beyond repute
Default Re: my driver isnt giving the right current?

Ok so just power it from a USB...
The best dvd burner diodes are <400mA for long life iirc. But running them at ~500mA don't kill them straight, so 340mA is a conservative value.
Leodahsan is offline   Reply With Quote
Old 08-19-2013, 02:49 PM #32
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
superh90x superh90x is offline
Class 1M Laser
 
Join Date: Apr 2011
Posts: 100
Rep Power: 7
superh90x is on a distinguished road
Default Re: my driver isnt giving the right current?

USB powered lasers? That sounds like something I should look into

Last edited by superh90x; 08-19-2013 at 02:49 PM.
superh90x 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 10:22 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