E-bay Green Module - Not Bad!

Here is some better pics of the 4.2v modules driver board.


Front:

notice the Q3 transistor under Resistor R4.



Back:

notice the Q3 transistor under Resistor R4.

hope this helps

pat

That looks pretty much like the DX modules...

But the 3 volt module shown in my first post is different...

Uhm, i see ..... i was thinking about switching the resistor on the opposite side, making two holes through the soldering pads, but i see from the pics that the place is already occupied from the switch, so no way ..... or, better said, still doable, but require to take away the switch, cut and rewire a pair of tracks ..... possible, but probably not for all the hobbysts (no offense intended)

The more easy system that i see, then, is to take away that resistor and substitute it with some SMD resistors soldered in "wafer" style, one over the other ..... if it's 0,22 ohm, you can use 5 x 1,1 ohm in parallel ..... the 1206 size (3,2x1,6mm) hold usually 250mW of power, so you end with 0,22 ohm 1,25W ..... considering that a diode like that one usually need 800ma ..... say 1A for precaution ..... 1A through 0,22 ohm is 220mV, and 220mV at 1A are 0,22W ..... more than enough .....

Being more precise, also standard low-cost SMD resistors in 0805 size (2x1,2mm) of 0,125W are enough, 5 of them hold 0,625mW, after all ..... and 1,1 ohm is actually an easy value to find ..... anyway, this take away the resistor from the transistor, and also give you the possibility to glue some piece of aluminium on the transistor itself, or solder a little piece of copper on its tab, or just fill the space from the module and the host with thermal conductive silicone glue, as i also sometimes do ..... this will improve the heat dissipation a lot

Finaly posted in the b/s/t section heres the link if anyone is interested in checking it out.
Please note that prices are $75 shipped, the $72 sale has ended.
It would be great if people could post some reviews specific to the 3v module in my new post so people dont get confused looking at this thread with the 3v modules and the discontinued 3.6-4.2v modules.
http://laserpointerforums.com/f39/200mw-green-laser-modules-sale-lpm-tested-49629.html

Thanks again everyone.

I just bought one of these and intend to bypass the module electronics and hook a die4drive up to it. Has anyone tried that yet? I wonder how hard or easy it will be to do that. I plan on using it in a laser projector if the modulation is acceptible. Otherwise, it will go in a lumia wheel.

Hey everyone, please check out my responce in the b/s/t section, i would like as many peoples opinions as possible so i can make the right move.
http://laserpointerforums.com/f39/200mw-green-laser-modules-sale-lpm-tested-49629.html
I thank you all in advance if you respond to this.
Thanks again

HUGE BLWOUT SALE:
hey everyone check out the link above in the b/s/t section im running huge disctounts right now as i need the money prices are way lower than anyone should expect to see this is your chance get them while there hot.
I need the money for school in 2 weeks and in order to do that i need to take a loss to continue my education.
I apretiate everyones purchase as this will help me continue my education.

robhouston: Can i ask why there is an unotherized payment opened up from your paypal transaction, i have spoke with you many times and now your trying to rip me off and get your money back because you know i shipped the item? If there is a problem you need to contact me, unless your trying to rip me off?

Hey Nexbox,

My green came in, safe and sound! I've powered it up and dag this thing is bright! Put on my red-lensed goggles and noticed that the whole time, I was accidentally burning my side-table!!!

Beam is extremely thin, like a 0.7mm pencil lead

Just wanted to report back that it arrived. Thanks again, Nexbox!

anyone know if the 3v module is good for a projector setup, can it be modulated to control the current with a different driver.

Thanks everyone for the positive feedback, I'm glad your happy with your purchase let me know if I can further assist you.

nkgamer1990 said:

anyone know if the 3v module is good for a projector setup, can it be modulated to control the current with a different driver.

Click to expand...

Being a circuit based on a op-amp, it can be modified for add a modulation, but is not easy, if you have not experience in working on SMD small PCBs ..... also, the driver from these modules are not designed for work for long times, as in a scanner/projector .....

IMHO, the better thing to do, if you want to use it in this way, is disconnect the diode from the driver, place the module in a good heatsink, build an external driver and hook it on the module with wires ..... this way, you can design a driver specifically built for long-time use, with heatsinking and all the rest

I would be interested in an already built driver i could use for my own project.....
Think you could help me out im not very good with small smd stuff only thing i have done is solder tiny smd leds to xbox 360 ring of light mods...
Thanks

nexbox360 said:

I would be interested in an already built driver i could use for my own project.....
Think you could help me out im not very good with small smd stuff only thing i have done is solder tiny smd leds to xbox 360 ring of light mods...
Thanks

Click to expand...

I like using these drivers from DrLava: http://hacylon.case.edu/ebay/laser_diode/FlexMod01.php

nexbox360 said:

I would be interested in an already built driver i could use for my own project.....
Think you could help me out im not very good with small smd stuff only thing i have done is solder tiny smd leds to xbox 360 ring of light mods...
Thanks

Click to expand...

Fixed or modulated ? ..... analog or digital modulation ?

I usually don't make drivers for sell them, only for my use, and don't have an "industrial" structure, for this, so i build them as prototypes ..... so, i can't make series for sell them, but if you need just a pair of prototypes, i think i can build them for you, if you're not in hurry .....

need more info.
What were you driving it with? what power?
Pictures maybe of it and the splash.