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Tri laser

Crazyk187

Crazyk187

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I have a project I am working on and I started it months ago long before I discovered this wonderful place. I have 3 laser red 5mw diodes and I am trying to splice them together. I just hooked them all up and used a 9v battery. Needless to say they got hot and one lost over 50% power. How would I go about hooking up 3 laser diodes to one power source. I am sure I don't need to tell you I really have no experience. Just allot of reading off this forum. I know I could proably use search, but it seems that what I am doing is so simple compaired to the likes of other peoples projects. Thanks for your help........
 
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As dorky as it sounds I am trying to make a tri laser for my Predator Bio mask. I have the positive wires and negative wires split to a bigger wire to be linked to a battery
 
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That would actually be pretty cool.... I love the predator.

But... Hooking them up to a 9v is not good.

Before I found these forums, and before I knew anything about lasers...
I took a blu-ray diode from a ps3 and hooked it straight up to a 9v battery. It lit up for a second, and never lit again. Pretty funny looking back on it. :crackup:

You probably need some sort of driver(s) for this. Although I am still learning day by day myself. I just know how to hook up single diodes. Someone more knowledgeable would probably be able to point you in the right direction.
 
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No its not good....LOL. All the diodes. Got hot then one went to what seemed half power lol (they were like 1.60$ us) each no big deal ..........I am assuming I need some kinda resistor......idk ???
 
weeba2kv said:
DealExtreme: $6.30 2~5mW Dot Red Laser Module (5-Pack/3V) a 5 pack of 2-5 mW diodes 3volt for a few bux
and they work good
Click to expand...

Those would work perfect. Since they are not just bare diodes. They are the whole module. I guess you could safely run those with a 9v too.

This pic was posted on the predator site that you linked.
prewiredlasers.jpg
 
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Tape three of those 3mW modules together (in a sort of triangle pattern) and wire them in series with a 9V.
 
This is what I did. Reading on this forum is see my error. What is that in between the switch and the diodes. Resistor???

IMAG0340.jpg
 
Series means hooking them up red, black, red, black and so. Then hooking the remaining red and black wires to your power supply. If you do that a 9 volt battery should be fine. Also the the thing the guy has wired between the diodes and the battery is a current or voltage regulator.
 
Series wiring, if I am not mistaken.... should look like these examples....

The example uses speakers and amps = power supply - laser modules

Impedance1.gif


4-Speaker_Series_Wiring_Dia.gif




Series VS Parallel
wiring-impedance-options-01.jpg
 
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