Blue laser 74W NUBM35 Portabl?

[Unown (WILD)]

6 diodes at 3.7A are about 35W power. It shines quite brightly.
If the driver was the problem all 14 diodes would die. Today I even ran a 7A current for about 5 seconds and it couldn't kill the diodes. It just happened by mistake. They are currently working without problems again at 3.7A. But it definitely needs better cooling, because for about 1 minute of use, the current cooling heats up a lot.

Did you just shine that beam at buildings????
Are you mad?
If he keeps doing that and showing it on lpf then I suggest that no one continue to help this guy. Further actions may be taken

 

[Borislav@87]

Did you just shine that beam at buildings????
Are you mad?
If he keeps doing that and showing it on lpf then I suggest that no one continue to help this guy. Further actions may be taken

Where did you see a building? This is an electrical substation, and there are no people there. FYI, I don't even wear glasses. I shine at home without problems without glasses. The light doesn't bother me. You are exaggerating a bit and fearmongering as if it were a nuclear weapon.

 

[RedCowboy]

It's when your beam went across a window, if someone looked out that window at that very moment you could hurt their eyes, now if you know that no persons were in that building then ok, but as a rule of safety we don't point at windows or let our beams run across windows.

We never point a laser at people, aircraft, vehicles or windows so as not to injure anyone or cause a distraction that could result in injury.

That said I know you are in Bulgaria, but safety 1st is always the right policy.

Your choice as when to wear laser attenuation glasses is on you, but please be careful and practice safe lasing because an accidents will often happen when you least expect it.

 

[Unown (WILD)]

Where did you see a building? This is an electrical substation, and there are no people there. FYI, I don't even wear glasses. I shine at home without problems without glasses. The light doesn't bother me. You are exaggerating a bit and fearmongering as if it were a nuclear weapon.

Don't argue with me. Stop shining lasers at buildings. I am in no way overexaggerating to the point of comparing it to a nuclear weapon. Get real dude. LPF will not condone unsafe usage of lasers. Keep that in mind before you continue to argue

 

[RedCowboy]

I watched his video again, it was a utility building without any windows, I don't know why I thought I saw a window too but I guess not.

Boris we are overly safety conscious because we live in a country where our Freedoms are always under threat of being legislated away, so we push safety, plus it is only the right thing to do because nobody wants anyone to get hurt or stuck with a lifelong vision disability, so yes we do push safety but for good reasons.

 

[Unown (WILD)]

Even if the building was empty there are other buildings around it. Reflections are a real danger as well. You just don't do it. A member showed a concern about this and I agree. Like RCB said we are overly careful because it is our hobby that is at risk when someone who even slightly shows carelessness.

 

[Borislav@87]

Don't argue with me. Stop shining lasers at buildings. I am in no way overexaggerating to the point of comparing it to a nuclear weapon. Get real dude. LPF will not condone unsafe usage of lasers. Keep that in mind before you continue to argue

I'm not arguing with anyone. I added a little clarification to your comment. I'll write it again, there are no people there and never have been. This is a building where electricity is distributed. No windows or anything. I'm well aware of what's dangerous and what's not. In fact, you are scolding me, not me scolding you. I don't light in buildings with people, I don't light on airplanes or anything. 99% of my use I light at home. I have glasses, but I don't use them. It's funny in itself that these homemade lasers are banned, but no one mentions that.

 

[Unown (WILD)]

I'm not arguing with anyone. I added a little clarification to your comment. I'll write it again, there are no people there and never have been. This is a building where electricity is distributed. No windows or anything. I'm well aware of what's dangerous and what's not. In fact, you are scolding me, not me scolding you. I don't light in buildings with people, I don't light on airplanes or anything. 99% of my use I light at home. I have glasses, but I don't use them. It's funny in itself that these homemade lasers are banned, but no one mentions that.

Let me clarify again. Do not post videos where you aim lasers at buildings.

 

[Borislav@87]

Here is the building.

 

[Unown (WILD)]

You did hit a few structures before that building. A reflection could have hit someone. Just be careful is what we are saying I don't know why you keep arguing about it.

 

[Ears and Eggs]

What I don't like is the part right between 10 and 12 seconds in the second video there. How can you be sure what got hit in that instant when you slashed the beam down across who knows what as you went from aiming it into the sky to pointing it down at that utility hut. We need to be really careful with stuff like that as even if it doesn't hurt anyone (which it could well do in an instant with something this powerful) it could cause people to panic who have no idea about lasers and then we all end up with tighter restrictions on the hobby. Which is the last thing we need right now.

It really did look like it crossed a road for an instant in the moment when it was being aimed down, before it got to that hut.




The other thing that crossed my mind is that certainly where I live there are often hobos and crackheads around utility huts like that. So even though it's not inhabited, there could still be people around. It appears this could be the case as I see there is a fair bit of graffiti on the building in the daytime photo you posted. What if there was someone just off in the shadows, walked out to spray paint something on the wall and got blasted right in the face?

 

[farbe2]

Hey Boris,

you said it before, you dont use protection because it does not bother you.. That isn't the mentality we (I hope I can speak for the community here) want to see.
Even the dot on the white wall can and will cause damage to your eyesight.

However you seem to know that but dont care.
I dont condone self harm but its a different story using a 35W laser out of your balcony.

Yes there might be no one at that location where you intended to shine the beam to but.
a single twitch, god forbid a stumble / trip could cause you to shine the beam all over the place.

Yes the possibility is small but there.

Having other unsuspecting people get eye damage to the point of them going completely blind is just unacceptable.

Its not like a nuclear weapon, but its very much like pointing a loaded gun out of your window and trying to just hit the tree but nothing else. (sure the gun might be lethal and a laser would not be but it still can and will cause serious LASTING! harm!)

What would you do if your neighbor would do that?

You dont need to trust me / us.
Have a look here:

Laser Accident History at Rockwell Laser Industries

You can find accidents where lab personal got permanent eye injury by using a <5mW HeNe laser.
Thats red. Blue also has photochemical hazards.

5mW thats 0,005W or just 15000 times lower than you are building currently.
So please take responsibility and dont just use that handheld out of a window.

 

[Unown (WILD)]

This is very disturbing.

 

[Unown (WILD)]

Many videos shining on those buildings, no regard to safety to himself nor those around him and a rotten piss poor attitude when confronted with it. This is not going to end well

 

[Ears and Eggs]

Okay I was giving you the benefit of the doubt that this was a momentary lapse in judgement, but you have another video on your channel where the laser is being shone around all over the place, clearly hitting buildings. Others comment that this is dangerous and then you just joke about people being blinded. (video below, also see comments) This is exactly what this hobby doesn't need. Someone gets their eyes injured due to some negligence like this and we are all gonna lose the privilege of having lasers.

If you want to keep posting projects on here, your safety needs to really improve.

 

[Borislav@87]

I made the changes on the laser. I installed the large aluminum heatsink and added a temperature sensor to see the temperature of the heatsink. Massiva is gripped very strongly and densely. There is nowhere more dense. There is a video of one minute of operation, and before that I had turned it on again and it was warm.