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)



Reply
 
LinkBack Thread Tools Display Modes
Old 06-11-2008, 08:10 AM #33
GooeyGus's Avatar
Class 3B Laser
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
GooeyGus GooeyGus is offline
Class 3B Laser
GooeyGus's Avatar
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
Default Re: Boost driver ideas...

Quote:
Originally Posted by woop
[quote author=toked323 link=1212653254/24#24 date=1212807549]I think why drlava's is good is because he had to solder on the PD leg on a diode to the driver for feed back through the IC i think it cuts it off? *Best i think is to incorporate the PD leg into a design for feedback
i am pretty sure drlava's driver doesn't use the pd pin. it is just constant current like all the other drivers out there

i made up a small board for this chip.

u1= TI TPS61201,
I1= coilcraft LPS3015-222MLB,
C1-3= 10uH ceramic,
C4= low value ceramic,
Rsense= selected using R=0.5/I (where I is the required current).

this driver should not be used without a load.
and LD- must never be connected to Bt-.
power source can be a single AA cell.[/quote]

This is perfect... Almost exactly what I had in mind. Very few external components, etc etc. The only problem is that TI only makes these in qfn packages, making it a little more difficult for the average hobbyist to throw together. Also, what would it take to be able to use the battery ground? And finally, R = .5/I.... this may be an obvious question but I is in amps right? so 200mA would be R=.5/.2 correct?

great work!


GooeyGus is offline   Reply With Quote







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







Old 06-11-2008, 08:58 AM #34
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: Boost driver ideas...

yup I is in amps
to make LD- connected to Bt- it would require at least another chip and maybe some resistors.
basically it would be a clone of the lavadrive.
woop is offline   Reply With Quote
Old 06-11-2008, 02:23 PM #35
GooeyGus's Avatar
Class 3B Laser
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
GooeyGus GooeyGus is offline
Class 3B Laser
GooeyGus's Avatar
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
Default Re: Boost driver ideas...

Quote:
Originally Posted by woop
yup I is in amps
to make LD- connected to Bt- it would require at least another chip and maybe some resistors.
basically it would be a clone of the lavadrive.
Gotcha. I'm gunna try printing some of these up and see how they turn out. They should work great, especially since the stronger blu-ray diodes dont use a case ground so I dont really need to worry about making the LD- and the bt- common.
GooeyGus is offline   Reply With Quote
Old 06-11-2008, 02:50 PM #36
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: Boost driver ideas...

well here is a B+W printable version 600dpi
(printing at 12% gets the exact right size on my 600dpi laserjet)
size should be 8.1x11.7mm

and if you are doing the toner transfer method, invert the image before printing :P
i have ended up with quite a few useless boards because of not checking this
Attached Thumbnails
Boost driver ideas...-printdriver.png  
woop is offline   Reply With Quote
Old 06-11-2008, 07:44 PM #37
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
toked323 toked323 is offline
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
Default Re: Boost driver ideas...

woop here is your image flipped
Attached Thumbnails
Boost driver ideas...-printdriver_001.png  
toked323 is offline   Reply With Quote
Old 06-11-2008, 08:36 PM #38
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
toked323 toked323 is offline
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
Default Re: Boost driver ideas...

Heres a whole page for you too
Attached Thumbnails
Boost driver ideas...-printdriver_001_001.png  
toked323 is offline   Reply With Quote
Old 06-12-2008, 03:29 AM #39
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: Boost driver ideas...

thanks for that toked

i etched some boards today.
i used the 'direct toner transfer' method.
basically you print (using a laser printer) on to the non stick backing paper from stickers. and iron that to the boards. the toner sticks to the board and you can remove the paper.
then you put it in some etchant, because toner is water proof, it resists the etchant and you have copper tracks left under the toner.
(tip: rub off some of the waxy stuff from the non stick paper using a tissue to get the toner to stick to it in the printer, otherwise the toner gets smudged all over it)
here are some pics documenting the process
http://s197.photobucket.com/albums/aa189/yaywoop/pcb/
Attached Thumbnails
Boost driver ideas...-p1020069.jpg  
woop is offline   Reply With Quote
Old 06-12-2008, 03:41 AM #40
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
toked323 toked323 is offline
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
Default Re: Boost driver ideas...

Quote:
Originally Posted by woop
thanks for that toked

i etched some boards today.
i used the 'direct toner transfer' method.
basically you print (using a laser printer) on to the non stick backing paper from stickers. and iron that to the boards. the toner sticks to the board and you can remove the paper.
then you put it in some etchant, because toner is water proof, it resists the etchant and you have copper tracks left under the toner.
(tip: rub off some of the waxy stuff from the non stick paper using a tissue to get the toner to stick to it in the printer, otherwise the toner gets smudged all over it)
here are some pics documenting the process
http://s197.photobucket.com/albums/aa189/yaywoop/pcb/

when you say non-stick doesnt that meen you can use stadnard wax paper
toked323 is offline   Reply With Quote
Old 06-12-2008, 03:42 AM #41
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
toked323 toked323 is offline
Class 3R Laser
 
Join Date: Sep 2007
Posts: 1,591
Rep Power: 96
toked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond reputetoked323 has a reputation beyond repute
Default Re: Boost driver ideas...

Very nice here are mine already flipped, Im pretty sure you can straight up print them out, Kudos to Rckstr for his help
toked323 is offline   Reply With Quote
Old 06-12-2008, 04:03 AM #42
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: Boost driver ideas...

wow crop or resize or something.
the first image is too low res to see whats going on, but there are lots of low res boards :P
and the second image is so huge LPF doesn't load it. 16490x21642 is WAY to big to be posting how did you even upload that?
is that double sided?
woop is offline   Reply With Quote
Old 06-12-2008, 06:17 AM #43
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: Boost driver ideas...

btw don't use jpeg for this sorta stuff. its really lossy and has artifacts. and png compresses solid lines better


and why did you post the layout with 121 boards on it? one would do for all intents and purposes

i mean seriously.. 20MB jpg!!! :-?
woop is offline   Reply With Quote
Old 06-12-2008, 08:17 AM #44
GooeyGus's Avatar
Class 3B Laser
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
GooeyGus GooeyGus is offline
Class 3B Laser
GooeyGus's Avatar
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
Default Re: Boost driver ideas...

Once again, great work on these. Now I just need to get a hot air station so I can get that qfn soldered on ;D

I've done it before with a full size heat gun... but its not the most delicate process ;D
GooeyGus is offline   Reply With Quote
Old 06-12-2008, 09:14 AM #45
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: Boost driver ideas...

I use a mini 'toaster' oven and smd solder paste
just put it in till the solder all melts.
woop is offline   Reply With Quote
Old 06-12-2008, 10:01 AM #46
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: Boost driver ideas...

Quote:
Originally Posted by toked323
Very nice here are mine already flipped, Im pretty sure you can straight up print them out, Kudos to Rckstr for his help
so did you design that layout?
it would probably be a good idea to have wide, short tracks. this circuit will be operating at 1.6Mhz and at high currents. looking at your design, it could cause to instability having such thin tracks.
it sorta looks more like a linear regulator design than a switching regulator :-/

also, why bother with double sided?

just trying to help you out

woop is offline   Reply With Quote
Old 06-12-2008, 01:18 PM #47
GooeyGus's Avatar
Class 3B Laser
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
GooeyGus GooeyGus is offline
Class 3B Laser
GooeyGus's Avatar
 
Join Date: Mar 2008
Posts: 2,673
Rep Power: 970
GooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond reputeGooeyGus has a reputation beyond repute
Send a message via AIM to GooeyGus Send a message via MSN to GooeyGus
Default Re: Boost driver ideas...

Quote:
Originally Posted by woop
I use a mini 'toaster' oven and smd solder paste
just put it in till the solder all melts.
Where do you get your solder paste? In theory, could one just set it with the paste, make sure its held down so it wont float around, and then use a heat gun to melt it?
GooeyGus is offline   Reply With Quote
Old 06-12-2008, 02:23 PM #48
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: Boost driver ideas...

i got it from jaycar (australia). pretty expensive stuff but 60g of it will last a long time.

I put it all together. testing with a 2.2V 147mA IR laser diode using a 1.2V AA battery it drew 420mA. thats 61% efficiency
this is expected with such a low voltage diode. 19% is lost in the sense resistor.
the efficiency should be above 75% with a violet and probably around 65% for a blue burner.

not too bad for a driver that fits inside an aixiz module and runs off one AA



woop 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 06:08 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