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 > Experiments & Modifications



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



Closed Thread
 
LinkBack Thread Tools Display Modes
Old 11-13-2007, 12:19 AM #545
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by woop
Wait a sec. are we talking about resistors for use as a shunt, for measuring current or the sense resistors for the LM317?
for the 317 sense resistors, you are right about the 1.25 voltage.
I thought we where talking about shunt resistors for measuring the current...
I don't know what you mean by a shunt resistor...don't they go in parallel with ammeters? What we are talking about is simply placing a 1 ohm resistor in series with the diode. However as I stated twice, I did it a bit differently and put the resistors between the output and adjust.

Added..Nevermind...the term shunt resistor is correct in this application as well as many others...sorry.


Gazoo is offline  







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







Old 11-13-2007, 03:26 AM #546
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
woop woop is offline
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
Default Re: DIY Homemade laser diode driver

I was refering to what IgorT said before,

Quote:
Originally Posted by IgorT
BTW: There is also a better and more exact way of measuring current here..

You can put a 1/2W, 1 Ohm resistor in series with the LD.. Then you measure the voltage drop (in millivolts) across it, and the voltage drop in mV is equal to the current in mA.

It will not affect the behaviour of the circuit in a bad way. It will have to put out slightly more voltage, but not much.

This is also safer than putting the multimeter in series, since you don't have to disconnect the LD, or anything else..


It can also be done with a different value resistor, but you would have to calculate the current (I = U / R) and the voltage drop would be higher..
what he is talking about is a shunt, separate from the lm317
I attached a picture of what he means (and what i have been talking about)
Attached Thumbnails
DIY Homemade laser diode driver-ldshunt.png  
woop is offline  
Old 11-13-2007, 03:31 AM #547
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
woop woop is offline
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
Default Re: DIY Homemade laser diode driver

oh yeah and with your resistors getting hot. even if it is a 3W resistor it still needs to dissipate the same amount of energy, so while it might take a bit longer to heat up because of its size, it will still get hot, unless you put a heatsink on it.
woop is offline  
Old 11-13-2007, 05:05 AM #548
Class 1M Laser
 
Join Date: Sep 2007
Posts: 162
Rep Power: 17
aaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to behold
aaronX987 aaronX987 is offline
Class 1M Laser
 
Join Date: Sep 2007
Posts: 162
Rep Power: 17
aaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to beholdaaronX987 is a splendid one to behold
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by Zarniwoop
To aaronx987:
The "T" suffix just specifies the TO-220 case.
http://www.national.com/mpf/LM/LM317.html
So yeah, that's fine.

The only modification needed for BluRay is that your minimum input voltage is a couple of volts higher.

Wow, I can't believe I missed the answer to my own question. :-[
Thanks Zarniwoop and IgorT!
aaronX987 is offline  
Old 11-13-2007, 11:25 AM #549
Class 2M Laser
 
Join Date: Jun 2007
Posts: 650
Rep Power: 16
chimo is a jewel in the roughchimo is a jewel in the roughchimo is a jewel in the roughchimo is a jewel in the rough
chimo chimo is offline
Class 2M Laser
 
Join Date: Jun 2007
Posts: 650
Rep Power: 16
chimo is a jewel in the roughchimo is a jewel in the roughchimo is a jewel in the roughchimo is a jewel in the rough
Default Re: DIY Homemade laser diode driver

I hope everyone realizes that the schematic pic is not a constant current source. The load must be connected to the Adj pin for that.

There is no need for a shunt resistance, either - the sense resistor can be used for that. There is negligible current sink into the LM317 from the Adj pin so just measure the voltage across the sense resistor (the resistor between Out and Adj) to ensure the cct is still in regulation ane caluclate the current by: I=1.25/Rsense

Quote:
Originally Posted by woop
I was refering to what IgorT said before,

[quote author=IgorT link=1185701612/510#522 date=1194819488]BTW: There is also a better and more exact way of measuring current here..

You can put a 1/2W, 1 Ohm resistor in series with the LD.. Then you measure the voltage drop (in millivolts) across it, and the voltage drop in mV is equal to the current in mA.

It will not affect the behaviour of the circuit in a bad way. It will have to put out slightly more voltage, but not much.

This is also safer than putting the multimeter in series, since you don't have to disconnect the LD, or anything else..


It can also be done with a different value resistor, but you would have to calculate the current (I = U / R) and the voltage drop would be higher..
what he is talking about is a shunt, separate from the lm317
I attached a picture of what he means (and what i have been talking about)[/quote]
chimo is offline  
Old 11-13-2007, 11:39 AM #550
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
brando brando is offline
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
Default Re: DIY Homemade laser diode driver

hi all- really cool forum here, got me all excited i had to go and buy 2 diodes from senkat, rip apart bunches of old electronics for various parts (incl diodes) and then visit the electronics store It sure is fun, but I am such a noob at electronics.... that's why I write for help now-

I've successfully built one of these drivers and I'm working on the second now, making it more compact than the first. It is essentially identical in parts, except for a smaller pot (100Ohms 0.5Watt precision trimmer vs. the large 3Watt Rheostat I used on the first). Anyways, when I hook up an LED, it doesn't light. My multimeter is showing 5.18 Volts going to the LED (My first driver shows 3V to LD). I don't know how to measure current I can't see any shorts on my solder job. Could the LM317T be fried from too much heat while soldering?

would appreciate any help-
Brandon
brando is offline  
Old 11-13-2007, 12:58 PM #551
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
brando brando is offline
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
Default Re: DIY Homemade laser diode driver

i think i found my problem... looking at aaron's diagram with pics, i see the middle pin on the 317 is OUT, not ADJ, as it appears it might be in the diagram from page one of this thread... trying that now...
brando is offline  
Old 11-13-2007, 01:19 PM #552
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
brando brando is offline
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
Default Re: DIY Homemade laser diode driver

i've corrected the pins on my 317-

the LED now works

but I am still getting too many volts- fluctuates between 4.5 and 5.11 without an LED attached... *with an LED it reads 2.7v, with an LD 1.8v... running off 4x AA batteries (almost new)

so is my 317 toast?
brando is offline  
Old 11-13-2007, 02:37 PM #553
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
brando brando is offline
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
Default Re: DIY Homemade laser diode driver

ok, let's go for the most-posts-by-a-noob award :

so i read a little on Ohm's Law in wiki and then turned my pot all the way up... bingo :-[ got laser 8-)
brando is offline  
Old 11-13-2007, 05:10 PM #554
IgorT's Avatar
Class 3B Laser
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
IgorT IgorT is offline
Class 3B Laser
IgorT's Avatar
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by brando
but I am still getting too many volts- fluctuates between 4.5 and 5.11 without an LED attached... *with an LED it reads 2.7v, with an LD 1.8v... *running off 4x AA batteries (almost new)
This is exactly the same question that was posted a page or two ago..


The circuit regulates the current by giving the load just enough voltage, for this current to flow through it.

The circuit CAN NOT regulate the current without something for the current to flow through. This is why it gives out the maximum voltage it can (without load) and you get a reading that seems too high..

When something is attached to the output of the circuit, it will automatically adjust the voltage, to achieve the desired current. This current will then stay constant, but the voltage will drop slightly, when the LD gets hot and drops in resistance.



BTW: Powering the circuit up without a load will charge the capacitor to the voltage you mentioned (around 5V). If you then connect the LD to the circuit, the capacitor might still have enough charge in itself, to damage or kill the LD. This is why it is recommended to short the capacitor, before soldering the LD to it.. After that it is best never to remove it again.

Luckily capacitors self discharge quite fast, but it's better to be safe. Powering the circuit up without a load serves no purpose whatsoever.


EDIT: Oh, and not to forget, LEDs have a different forward voltage then LDs. If you simulate the load with a few LEDs in parallel, you will be able to verify if the current regulation works, but the voltages will be different then on the LD at the same current. Since it regulates current by adjusting the voltage, this is what's supposed to happen, and it means it works.
__________________
Signature temporarily out of order...
IgorT is offline  
Old 11-13-2007, 05:38 PM #555
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
brando brando is offline
Junior Member
 
Join Date: Nov 2007
Posts: 10
Rep Power: 0
brando is on a distinguished road
Default Re: DIY Homemade laser diode driver

yeah, i feel like i've read every post in every thread two or three times... in the heat of the moment though, you know a lot of learning yet to do ;D

thanks very much for the insight!
brando is offline  
Old 11-13-2007, 05:42 PM #556
Class 2M Laser
 
Join Date: Aug 2007
Posts: 790
Rep Power: 23
a_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to behold
a_pyro_is a_pyro_is is offline
Class 2M Laser
 
Join Date: Aug 2007
Posts: 790
Rep Power: 23
a_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to behold
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by IgorT
[This is exactly the same question that was posted a page or two ago..
I understand that this is the longest thread on the forum, but why don't people just read it? Had everyone who posted taken the time to read the entire thread first, I doubt it would be even half as long.
a_pyro_is is offline  
Old 11-13-2007, 05:49 PM #557
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: DIY Homemade laser diode driver

I guess in many ways it is easy for members who have been watching this from the get go, we've been there, done that and got the working laser to proove it.....

The most important info is in the first few pages anyway so reading every post is not imperitive....but there is worthwhile stuff in the rest of it if you keep at it.

Regards rog8811

__________________
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  
Old 11-13-2007, 08:05 PM #558
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
woop woop is offline
Class 2 Laser
 
Join Date: Nov 2007
Posts: 342
Rep Power: 12
woop will become famous soon enoughwoop will become famous soon enough
Default Re: DIY Homemade laser diode driver

also i think everyone should have a quick look through the datasheet before posting questions. it even has the schematic for a constant current source. along with correct pinouts.
yes it would help if daedal's schematic didn't have the wrong pinout. another reason why you should all read the datasheet
http://www.national.com/ds.cgi/LM/LM117.pdf

geez even a far back as the 3rd page there are people asking stupid questions that where already answered.

the thing with using a shunt is that it is easier and more acurate. also it doesn't waste much voltage.
woop is offline  
Old 11-13-2007, 09:31 PM #559
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

woop,
I agree except I don't consider any question to be a stupid question. Many members are new to this forum and also new to electronics. I have noticed as members get seasoned and learn then they help others. In addition the numbering on Daedals' schematic is very confusing. People think it is correct so they just go from it and don't know to look at the datasheet. I believe this has been the cause of a lot of problems in this thread.

As far as the shunt resistor, I fully agree. Sure it is easy to calculate current as chimo suggested, but I like to always have direct readings when I am turning that rheostat looking for the threshold of my lasers...lol. Especially the blu-rays as there is very little room for error.

Every day I come here I learn something new. If members didn't ask questions I would not be learning anything. Sometimes I make mistakes with my answers and I will be corrected, as you know. Then I will go and verify and admit when I am wrong. I think we all need to be tolerant of each other. Tolerance and patience is one of the very many great things about this forum..


Gazoo is offline  
Old 11-14-2007, 12:06 AM #560
Class 3R Laser
 
Join Date: Aug 2007
Posts: 1,880
Rep Power: 21
BlueFusion is just really niceBlueFusion is just really niceBlueFusion is just really niceBlueFusion is just really nice
Send a message via MSN to BlueFusion
BlueFusion BlueFusion is offline
Class 3R Laser
 
Join Date: Aug 2007
Posts: 1,880
Rep Power: 21
BlueFusion is just really niceBlueFusion is just really niceBlueFusion is just really niceBlueFusion is just really nice
Send a message via MSN to BlueFusion
Default Re: DIY Homemade laser diode driver

this thread may be coming to an end... sorry DDL! ya i told daedal first... and he's cool.
but with my development of a driver for Kenom's barrels, I may be able to supply assembled drivers or kits for less than it costs to do it yerself.
Low dropout reg, so you can use only 5.5v for blurays or as little as 4.5v for reds...
and on a professionally printed PCB.
This is only a very vague maybe at the moment, i have to run it by kenom and drlava, the other members of the development team, and i have to see if its financially viable for me to sell them straight off or if it needs to take a GB format. But we're looking at $5 a pop, ISH. very vague like i said.
BlueFusion is offline  
Closed Thread





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/f42/diy-homemade-laser-diode-driver-26339.html
Posted By For Type Date
Laser 530: The diode laser This thread Refback 07-03-2017 05:17 AM
Laser Driver Diy images This thread Refback 06-14-2017 03:42 AM
Laser 530: The diode laser This thread Refback 06-12-2017 09:27 PM
Proiect:Laser de 100-200mW - LED-uri si alte surse de lumina - Forumul Electronistilor This thread Refback 05-15-2017 06:33 PM
Laser 530: October 2010 This thread Refback 03-31-2017 09:12 AM
Laser 530: The diode laser This thread Refback 03-06-2017 01:40 PM
Laser 530: October 2010 This thread Refback 02-25-2017 01:34 PM
zero fidelity CNC: Laser diode driver circuit This thread Refback 02-09-2017 02:09 PM
Laser 530: The diode laser This thread Refback 11-06-2016 06:52 PM
Laser Diode Wiring Diagram - rs232 laser transceiver This thread Refback 10-25-2016 01:37 PM
Laser 530: October 2010 This thread Refback 08-14-2016 01:59 PM
Laser 530: The diode laser This thread Refback 07-14-2016 03:51 PM
Laser 530: October 2010 This thread Refback 07-06-2016 12:59 PM
Laser 530: The diode laser This thread Refback 04-18-2016 02:17 PM
Download DIY Make A 3 Laser Diode Driver Video Mp4 3gp This thread Refback 02-16-2016 08:13 AM
Laser V | Page 2 | OpenBuilds This thread Refback 02-10-2016 12:16 PM
?????-???????? : 300mW Mini This thread Refback 02-07-2016 08:42 PM
Laser 530: The diode laser This thread Refback 12-14-2015 11:57 AM
Laser 530: The diode laser This thread Refback 12-11-2015 01:24 PM
Proiect de week-end: Masina de gravare cu laser din piese ?reciclate? | Blogul lui Iusty This thread Refback 11-22-2015 07:12 PM
zero fidelity CNC: Laser diode driver circuit This thread Refback 11-18-2015 03:42 PM
Diy Burning Laser : CRAFTS This thread Refback 10-19-2015 02:23 AM
Laser 530: October 2010 This thread Refback 10-08-2015 06:20 PM
Diy Homemade Laser Diode Driver 2015 | 123 Sayings This thread Refback 10-08-2015 04:00 AM
Simple Laser Diode Driver Circuit images This thread Refback 09-21-2015 04:31 PM
Laser 530: The diode laser This thread Refback 09-01-2015 05:23 AM
Le moteur de recherche franšais sans publicitÚ This thread Refback 07-13-2015 05:29 AM
laser diode driver circuit lm358 This thread Refback 07-10-2015 10:24 PM
Pin Diy Laser Diode Driver on Pinterest This thread Refback 06-17-2015 11:56 PM
445nm 1W (1000mW) Blue Brand New Laser Diode in Aixiz Module, HighTechDealZ This thread Refback 06-13-2015 03:24 PM
650nm LPC826 Brand New Laser Diode, HighTechDealZ This thread Refback 06-13-2015 12:00 PM
650nm LPC826 Red Laser Diode in Aixiz Module, HighTechDealZ This thread Refback 06-12-2015 02:06 AM
445nm 1W (1000mW) Blue Brand New Laser Diode, HighTechDealZ This thread Refback 06-11-2015 09:59 PM
DIY: Make a $3 Laser Diode Driver! Musica Movil | MusicaMoviles.com This thread Refback 06-10-2015 12:19 PM
Beginning laser projector build and first post, all advice appreciated This thread Refback 05-07-2015 04:57 PM
laser diode driver circuit schematic This thread Refback 04-25-2015 10:00 PM
Laser 530: The diode laser This thread Refback 03-23-2015 06:12 PM
> circuits > diy homemade laser diode driver l29268 - Next.gr This thread Refback 03-21-2015 06:55 PM
Laser 530: October 2010 This thread Refback 03-16-2015 01:38 PM
> circuits > police laser lidar jammers l34798 - Next.gr This thread Refback 02-16-2015 10:38 AM
Laser 530: October 2010 This thread Refback 02-01-2015 03:34 PM
Laser 530: October 2010 This thread Refback 01-31-2015 03:15 PM
Make Laser Diode Driver This thread Refback 01-12-2015 08:33 AM
Laser 530: October 2010 This thread Refback 01-06-2015 09:39 AM
Laser 530: The diode laser This thread Refback 12-26-2014 07:44 PM
Laser cutter, start slicing stuff for under 50 dollars This thread Refback 12-26-2014 10:42 AM
Magmod Coupon Code 2014 | Mine Craft Online Resource This thread Refback 11-15-2014 10:34 PM
Laser 530: October 2010 This thread Refback 11-11-2014 06:08 PM
Laser 530: The diode laser This thread Refback 10-31-2014 02:34 PM
DIY Homemade Laser Diode Driver Laser Pointers - Searchable.openedhost.com This thread Refback 10-28-2014 01:12 PM










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 02:09 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