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 01-04-2010, 10:21 PM #1217
awlego's Avatar
Class 1M Laser
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
awlego awlego is offline
Class 1M Laser
awlego's Avatar
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
Default Re: DIY Homemade laser diode driver

Yes, that would work to make 5 ohms... but I want a max power of 125mA (I'm powering a PHR-803T) Shouldn't 10 ohms give me that? (1.25v / 10 ohms = 125mA)


awlego is offline  







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







Old 01-04-2010, 10:25 PM #1218
BuildAbluraylaser's Avatar
Class 2M Laser
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
BuildAbluraylaser BuildAbluraylaser is offline
Class 2M Laser
BuildAbluraylaser's Avatar
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

Well you have a pot, or are you only using a resistor? If you can't reach far enough, try lowering the resistor value. Once I had this problem, I couldn't get higher than 300mA, so I added another for 4 ohm resistor in parallel, and I was able to reach 0.96 Amps.
__________________


Visit my photography thread! (link)
BuildAbluraylaser is offline  
Old 01-04-2010, 10:41 PM #1219
awlego's Avatar
Class 1M Laser
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
awlego awlego is offline
Class 1M Laser
awlego's Avatar
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
Default Re: DIY Homemade laser diode driver

I have a 10 ohm resistor and a 25 ohm pot. I know I could always change my circuit to a 4 ohm resistor, but in theory the resistors I already have should give me my desired 125mA. So I'm just trying to figure out any possible reasons for my low readings. If nothing works, I'll just change the resistor values, but it would be nice to have everything working according to theory
__________________
RGB Drivers for sale!!
http://laserpointerforums.com/f39/aw...ved-65086.html

My lasers:
5mW red key chain pointer
5mW green pointer
20mW green in custom host.
100mW green in matching custom host.

PHR running 135mA in a matching custom host.
CUSTOM ADJUSTABLE RGV - PHR @ 37-125mA, green module @ 0-300mA (about 20mW output), and a LOC @ 42-300mA

And the pride of my collection: a homemade RGB system with a homemade full color driver
awlego is offline  
Old 01-06-2010, 08:01 PM #1220
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Hallucynogenyc Hallucynogenyc is offline
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Default Re: DIY Homemade laser diode driver

@buildabluraylaser: wtf are you talking about. using the MM in amp mode is the best way to set the current on this and it perfectly works! Of course your're just shortening the circuit, but since this is a constant current driver using 0.0001 ohms as load will still make 125mA to go trough them!

Also, what do you really want the pot for? 125mA constant current is good enough, just put 5 ohms (or 2x 10 in paralel) and you're ready to go!

I still don't get your problem. Do it the way I said you and tell me again. Pots are always giving problems..
__________________
The difference between an ignorant and a wise is that the wise knows the limits of his knowledge while the ignorant ignores the limits of his ignorance.
Learn how to use Opera and tell me about your experience here!


Wicked Lasers Evolution Pro 130mW ------------------> Review
Rayfoss 150mW waterproof
Rayfoss 200mW focusable torch -----------------------> Review
Dealextreme 5mW true laser pointer
Dealextreme 50mW true laser pointer
Dealextreme 100mW true laser pointer
Laserlands 30mW disco laser --------------------------> Review
5mW pointers (many of them)
DX 200mW Red laser (Dilda) --------------------------> Review
120mW PHR custom build
200mW GGW custom build

Focalprice 7$ green&bluray laser goggles
Dealextreme tripod and clamp for laser holding -----> Review
DIY 3 motor Spirograph --------------------------------> Review
HLPM-2 laser power meter
Hallucynogenyc is offline  
Old 01-06-2010, 08:43 PM #1221
BuildAbluraylaser's Avatar
Class 2M Laser
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
BuildAbluraylaser BuildAbluraylaser is offline
Class 2M Laser
BuildAbluraylaser's Avatar
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

That's exactly what I was saying....

Why did you give me negative rep....

I'm just trying to help, I've built multiple DDL drivers, and I think I know what I am saying. I was talking about the pot because I didn't understand if he was using one or just resistors....

WTF?

And you are accusing me of false information.... ??
__________________


Visit my photography thread! (link)
BuildAbluraylaser is offline  
Old 01-06-2010, 10:32 PM #1222
awlego's Avatar
Class 1M Laser
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
awlego awlego is offline
Class 1M Laser
awlego's Avatar
 
Join Date: Oct 2009
Location: Pasadena, CA
Posts: 160
Rep Power: 20
awlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud ofawlego has much to be proud of
Default Re: DIY Homemade laser diode driver

Thank you both for trying to help...

Anyways. I'm using the pot because I want to change the power on the fly. I'm building a RGV build and want to be able to easily adjust each power to make various colors.

So I understand not wanting to short the circuit, but I tried it anyways to test it, and it came out working correctly So I guess my circuit is good, it's my test load that is bad.

Thank you both so much for your help. +1 to each. (buildabluraylaser - I couldn't give you more rep, because apparently I need to spread it around before giving to you again ) You've both been helpful, thanks.

-Awlego
__________________
RGB Drivers for sale!!
http://laserpointerforums.com/f39/aw...ved-65086.html

My lasers:
5mW red key chain pointer
5mW green pointer
20mW green in custom host.
100mW green in matching custom host.

PHR running 135mA in a matching custom host.
CUSTOM ADJUSTABLE RGV - PHR @ 37-125mA, green module @ 0-300mA (about 20mW output), and a LOC @ 42-300mA

And the pride of my collection: a homemade RGB system with a homemade full color driver
awlego is offline  
Old 01-06-2010, 11:19 PM #1223
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Hallucynogenyc Hallucynogenyc is offline
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Default Re: DIY Homemade laser diode driver

Quote:
You need a load to measure amps. You need to connect the DMM in series because it measure the current that goes through a circuit element. A DDM doesn't have enough resistance, so all you're doing is shorting the circuit. Not a good idea.
This is what I was talking about. See, the guy did what I said and ops, magic, it works! Anyway, I recognize I shouldn't have neg repped you for that, we all make mistakes. I'm really sorry but I was freaking angry because of a real life issue. I'll add you some rep as soon as the system allows me to do so, also, if someone can give this guy >25 rep points would help a lot. It won't happen again. I guess I need to go bed...
__________________
The difference between an ignorant and a wise is that the wise knows the limits of his knowledge while the ignorant ignores the limits of his ignorance.
Learn how to use Opera and tell me about your experience here!


Wicked Lasers Evolution Pro 130mW ------------------> Review
Rayfoss 150mW waterproof
Rayfoss 200mW focusable torch -----------------------> Review
Dealextreme 5mW true laser pointer
Dealextreme 50mW true laser pointer
Dealextreme 100mW true laser pointer
Laserlands 30mW disco laser --------------------------> Review
5mW pointers (many of them)
DX 200mW Red laser (Dilda) --------------------------> Review
120mW PHR custom build
200mW GGW custom build

Focalprice 7$ green&bluray laser goggles
Dealextreme tripod and clamp for laser holding -----> Review
DIY 3 motor Spirograph --------------------------------> Review
HLPM-2 laser power meter

Last edited by Hallucynogenyc; 01-06-2010 at 11:24 PM.
Hallucynogenyc is offline  
Old 01-07-2010, 01:26 AM #1224
BuildAbluraylaser's Avatar
Class 2M Laser
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
BuildAbluraylaser BuildAbluraylaser is offline
Class 2M Laser
BuildAbluraylaser's Avatar
 
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 881
Rep Power: 79
BuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond reputeBuildAbluraylaser has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

For the rep, it's ok, at least you didn't get me in the negatives.


I don't really take the reputation system seriously either.. It was better on the other system.

Ok I admit my test load error, but I have to say I have always been thought to use one.
And I have never had any problems.

Well I'm glad that everything is sloved.
__________________


Visit my photography thread! (link)
BuildAbluraylaser is offline  
Old 01-07-2010, 01:35 AM #1225
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Hallucynogenyc Hallucynogenyc is offline
Class 3B Laser
 
Join Date: Jan 2009
Location: Spain, tarragona
Posts: 3,635
Rep Power: 219
Hallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond reputeHallucynogenyc has a reputation beyond repute
Send a message via MSN to Hallucynogenyc
Default Re: DIY Homemade laser diode driver

This is done to simulate the laser diode load, which is necessary in non-linear drivers such as the flexdrive. For the Rkcstr or the DDL driver the MM on amp mode is all you need
__________________
The difference between an ignorant and a wise is that the wise knows the limits of his knowledge while the ignorant ignores the limits of his ignorance.
Learn how to use Opera and tell me about your experience here!


Wicked Lasers Evolution Pro 130mW ------------------> Review
Rayfoss 150mW waterproof
Rayfoss 200mW focusable torch -----------------------> Review
Dealextreme 5mW true laser pointer
Dealextreme 50mW true laser pointer
Dealextreme 100mW true laser pointer
Laserlands 30mW disco laser --------------------------> Review
5mW pointers (many of them)
DX 200mW Red laser (Dilda) --------------------------> Review
120mW PHR custom build
200mW GGW custom build

Focalprice 7$ green&bluray laser goggles
Dealextreme tripod and clamp for laser holding -----> Review
DIY 3 motor Spirograph --------------------------------> Review
HLPM-2 laser power meter
Hallucynogenyc is offline  
Old 01-11-2010, 04:44 PM #1226
takirasan's Avatar
Member
 
Join Date: Oct 2009
Location: Thailand
Posts: 38
Rep Power: 0
takirasan is on a distinguished road
Send a message via MSN to takirasan
takirasan takirasan is offline
Member
takirasan's Avatar
 
Join Date: Oct 2009
Location: Thailand
Posts: 38
Rep Power: 0
takirasan is on a distinguished road
Send a message via MSN to takirasan
Default Re: DIY Homemade laser diode driver

dig dig dig dig
I like light
takirasan is offline  
Old 01-15-2010, 08:57 PM #1227
Junior Member
 
Join Date: Jan 2010
Posts: 4
Rep Power: 0
morganw is on a distinguished road
morganw morganw is offline
Junior Member
 
Join Date: Jan 2010
Posts: 4
Rep Power: 0
morganw is on a distinguished road
Question Re: DIY Homemade laser diode driver

I was wondering if it would be ok to replace the 100 ohm pot with a 500 ohm 20 turn pot? Would this work ok or is the resistance too high?
morganw is offline  
Old 01-16-2010, 05:50 PM #1228
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: DIY Homemade laser diode driver

It's a pot, it ca be turned to 0. But, first check if this provides you with an acceptable adjustment range. For a 250mA current, the minimum resistance is 5 ohm. Then,e ven witha 20 turn, a single turn is 25 ohm, and nearly all the adjustment will be in the last turn (~40mA -> 250mA). This gets better for lower currents, but worse for higher. Also check if the pot can take the power, a 20 turn pot is way too nice to smoke because of the high current. A pot hat a certain power, associated with a certain current, do not pass this.
There are even better alternatives for the LM317 based driver circuit that can make good use of the 20 turn pot, it's obvious you're not going for a pointer here. And it doesn't have to be that complex.
Bluefan is offline  
Old 01-18-2010, 02:57 PM #1229
Junior Member
 
Join Date: Jan 2010
Posts: 4
Rep Power: 0
morganw is on a distinguished road
morganw morganw is offline
Junior Member
 
Join Date: Jan 2010
Posts: 4
Rep Power: 0
morganw is on a distinguished road
Post Re: DIY Homemade laser diode driver

ok, thank you. I think that I might use a different pot then. I didn't really think about that.
Can you give me a schematic of a different circuit that can make use of a 20 turn pot?

Last edited by morganw; 01-18-2010 at 03:07 PM.
morganw is offline  
Old 01-23-2010, 12:49 AM #1230
brtaman's Avatar
Class 3R Laser
 
Join Date: Jun 2008
Posts: 1,198
Rep Power: 97
brtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond repute
Send a message via MSN to brtaman
brtaman brtaman is offline
Class 3R Laser
brtaman's Avatar
 
Join Date: Jun 2008
Posts: 1,198
Rep Power: 97
brtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond reputebrtaman has a reputation beyond repute
Send a message via MSN to brtaman
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by Hallucynogenyc View Post
This is what I was talking about. See, the guy did what I said and ops, magic, it works! Anyway, I recognize I shouldn't have neg repped you for that, we all make mistakes. I'm really sorry but I was freaking angry because of a real life issue. I'll add you some rep as soon as the system allows me to do so, also, if someone can give this guy >25 rep points would help a lot. It won't happen again. I guess I need to go bed...
Just did. It wasn't really wrong information per se, just careful advice.

While I also just short LM317 drivers to measure current, which in the end isn't even needed due to the simple Vref calculations, you will no find many electrical engineers approving of shorting anything out.
__________________
Youtube Channel

"If I were creating the world I wouldn't mess about with butterflies and daffodils. I would have started with lasers, eight o'clock, Day One!" (Time Bandits/Terry Gilliam/191)
brtaman is offline  
Old 01-24-2010, 01:34 PM #1231
Junior Member
 
Join Date: Jan 2010
Posts: 3
Rep Power: 0
nOIspheratu is on a distinguished road
nOIspheratu nOIspheratu is offline
Junior Member
 
Join Date: Jan 2010
Posts: 3
Rep Power: 0
nOIspheratu is on a distinguished road
Default Re: DIY Homemade laser diode driver

I wired everything up like in the schematic but i┤m only getting about 100mv over the resistor of my dummy diod. Could the Potentiometer be the reson because i used a mini version?
nOIspheratu is offline  
Old 01-24-2010, 03:05 PM #1232
frostin's Avatar
Class 1 Laser
 
Join Date: Jul 2009
Posts: 70
Rep Power: 11
frostin has a spectacular aura aboutfrostin has a spectacular aura aboutfrostin has a spectacular aura about
frostin frostin is offline
Class 1 Laser
frostin's Avatar
 
Join Date: Jul 2009
Posts: 70
Rep Power: 11
frostin has a spectacular aura aboutfrostin has a spectacular aura aboutfrostin has a spectacular aura about
Default Re: DIY Homemade laser diode driver

Quote:
Originally Posted by nOIspheratu View Post
I wired everything up like in the schematic but i┤m only getting about 100mv over the resistor of my dummy diod. Could the Potentiometer be the reson because i used a mini version?
Depends what pot you used and no your size of pot wont hurt it. And are you sure you hooked up the pot currectly?
frostin 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 11:35 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