New FOCUSABLE 200mW Red on DX

Ordered this, batts and charger. Batts arrived, other two pending. =.=

frogger:

WickedLasers sells protection goggles for $39, and a better looking model for $49.

dang, still not looking to spend that much.
I'll look around some more, thanks!

I don't think you're gonna find real protection goggles for less than that...

dang, i guess i'll just start saving up, thanks!

Is it safe to use this laser without eye protection?
Just looking at the dot?

Light matches 12 feet away? Wow! Ordered! (with ten CR2 batteries, for the moment)

frogger said:

dang, i guess i'll just start saving up, thanks!

Is it safe to use this laser without eye protection?
Just looking at the dot?

Click to expand...

You can safely use a laser without protection.

But not if you point it at something close and look at the dot...


Since most people try burning holes in plastic or lighting matches and so on, it's really not good for you. It would leave nasty after images, and you can't tell if you're hurting your eyes or not.

Especially not, because the red doesn't look that very bright. Green is much brighter. And a 100mW green or even a 50mW green will hurt your eyes if you look at the spot. A red doesn't hurt so much to look at, but does just as much damage or more, because it's more powerful.

Hey, IGort, I hope you read this, it's not letting me send PM's until 15 posts. Lmao. Don't know how I sent you the first one. Sorry for leaving you hanging.

I'm reading it...

Yeah, i didn't think of this possibility, because i did get at least three PM from you. Go to the thread and talk there. Just click on the link in my sig below...

I have one of this laser.I tried to change the pot,but apparently changing its position does nothing(I have tried several different position and the resistance varied almost nothing),anyone else also have noted that?

@frogger:

yes you can use it without safety goggles, but you'd have to aim it at something really far....
i have used it without goggles and tried to burn black plastic tape, it left some after images (havent played with my dildalazor for 3 days now, it is really dangerous)


so if i were you i'd seriously consider getting some goggles.....remember you get only 2 eyes.

GamerBR said:

I have one of this laser.I tried to change the pot,but apparently changing its position does nothing(I have tried several different position and the resistance varied almost nothing),anyone else also have noted that?

Click to expand...

Unless yours is faulty, which i doubt, turning the pot does indeed change the current. But i seriously hope you had it wired through a DMM while doing that.

Pot's are not there so that people could turn them to the max. Most LDs would die from that. Pots are only for fine tuning by the manfacturer. This is not a green laser with an underdriven pump.


I had to adjust my pot, because the driver was not regulating. 2x3V was not enough for it. But because the pot was still set for it to let 310mA through, even below regulation, i had to reduce the current first. Putting in two 3.6V Li-Ions would kill it. After i put them in, i slowly raised the current WHILE measuring it, untill i reached 330mA. Now it can keep the current constant from two 3.6V batteries.


You would not see much (any) difference in brightness between 200mW and 250mW of power. If you tried to reach more than that, you could easily kill it.

Are you sure you measured the resistance of the pot correctly? There are two pins on each pot, between which the resistance never changes.

Did anyone take the diode out of the Dilda?

Can it be done without endangering the diode? There would seem to be a brass thing holding it in. Don't know if it has threads tho...

I know there was one in pieces because it died.. Any info on that?



EDIT: It does come out safely without danger to the diode.. The brass thing is a nut holding the diode in the heatsink.

IgorT said:

[quote author=GamerBR link=1204386353/360#363 date=1211859107]I have one of this laser.I tried to change the pot,but apparently changing its position does nothing(I have tried several different position and the resistance varied almost nothing),anyone else also have noted that?

Click to expand...

Unless yours is faulty, which i doubt, turning the pot does indeed change the current. But i seriously hope you had it wired through a DMM while doing that.

Pot's are not there so that people could turn them to the max. Most LDs would die from that. Pots are only for fine tuning by the manfacturer. This is not a green laser with an underdriven pump.


I had to adjust my pot, because the driver was not regulating. 2x3V was not enough for it. But because the pot was still set for it to let 310mA through, even below regulation, i had to reduce the current first. Putting in two 3.6V Li-Ions would kill it. After i put them in, i slowly raised the current WHILE measuring it, untill i reached 330mA. Now it can keep the current constant from two 3.6V batteries.


You would not see much (any) difference in brightness between 200mW and 250mW of power. If you tried to reach more than that, you could easily kill it.

Are you sure you measured the resistance of the pot correctly? There are two pins on each pot, between which the resistance never changes.[/quote]
Actually I was dumb enough to measure between the two points you mentioned .But after changing a little I was turning the laser on and measuring the current(with no significant increase or decrease).Anyway I did it again,this time I measured the current and changed the pot while it was on,basically it had only two levels,off(no current,actually some,about 6ma),and on(changing almost nothing,about 300 to 308 at 6.41v,at closed-circuit,while open it was 6.60v),mine must be faulty.

Were all your connections good (between DMM and driver input pads)?

But your laser does work tho? You should measure the current with full batteries, slightly empty and half empty batteries, to see if the current is always the same. If it is the same, the driver is regulating the current. And since it determines what current it should do, by measuring the voltage drop across the pot and a resistor, the pot must be working.


Do some more tests. But you really shouldn't go higher than 340mA, if you figure it out.

IgorT said:

Were all your connections good (between DMM and driver input pads)?

But your laser does work tho? You should measure the current with full batteries, slightly empty and half empty batteries, to see if the current is always the same. If it is the same, the driver is regulating the current. And since it determines what current it should do, by measuring the voltage drop across the pot and a resistor, the pot must be working.


Do some more tests. But you really shouldn't go higher than 340mA, if you figure it out.

Click to expand...

Yes,the laser is working and being powerful enough to burn just fine.I will test this way later,the only means of discharging the batteries are with this laser,I don't have anything else that uses CR2.