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Phlatlight Red LED From the Casio Projector Burns Stuff!

FireMyLaser

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I got my 445nm diodes and LED from Pontiacg5 today (thanks! :beer:) and fired it up. It is awesome!



The setup with a huge heatsink and fan:
b2867de2.jpg


The LED:
7dabfe22.jpg


The resistor (copper wire). The power is from a ATX psu, 8.1A @ 5V.
016af5f0.jpg


Optics:
a68ef9d4.jpg


565fd073.jpg


7eb02a4a.jpg
 



Asherz

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That's an insane LED! Everything about the Casio projector seems to be epic.
 

ElektroFreak

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Ahhh.. @work so youtube is blocked. Any youtube videos aren't there.. just nothingness.
 

FireMyLaser

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Here I just took a few more pics:
6670128b.jpg


2983bacb.jpg


The die at different currents, starting at 8.1A:
5ab90f52.jpg


8292f02e.jpg


64f31600.jpg


91aa106f.jpg


The die projected on the ceiling with an aixiz acrylic lens. You can see the cathode-mask as many parallel stripes.
29dd36d0.jpg
 
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FireMyLaser

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The first two pins to the left are for the thermistor. Pin 3, 4, 5 is cathode. Pin 6, 7, 8 is anode. The back plate/heatsink is also anode.
 
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HaloBlu

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You likely didn't notice but your "resistor" is leaving some char marks on your nice 2x4 :D
Awesome vid & pics. Your going to use it as a brake light for your car? ;)

How is the heat attached to your heatsink? You have the thermistor connected yes?
 
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charliebruce

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You likely didn't notice but your "resistor" is leaving some char marks on your nice 2x4 :D
Awesome vid & pics. Your going to use it as a brake light for your car? ;)

How is the heat attached to your heatsink? You have the thermistor connected yes?

I have a pair of these which might eventually become brake lights :)

I already commented over on YT but I love the project, very impressive indeed. Where did you get the optics?
 

FireMyLaser

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I use this reflector without the holder (they are made of plastic, NOT glass as described). The glass lens on top is one I just had laying around, I needed it to protect the reflector from the heat when burning. The voltage drop is 2.3V. I don't know what kind of connector it is, I just happened to find a 10 pin female, I cut off the excess two pins to make it fit. I haven't connected the thermistor.

BTW, you do not want to use this as a brake light lol! This thing is super bright, like a head light!
 
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HIMNL9

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I'm working on a different idea, for this little led ..... a bit more "evily" thoughd :eg: ..... sorta of "pocket-size self-defense helper" ..... :p :D
 

daguin

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I'm working on a different idea, for this little led ..... a bit more "evily" thoughd :eg: ..... sorta of "pocket-size self-defense helper" ..... :p :D

-- sits up and takes notice :san:

Peace,
dave
 

LarryDFW

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I'm working on a different idea, for this little led ..... a bit more "evily" thoughd :eg: ..... sorta of "pocket-size self-defense helper" ..... :p :D

I've been testing mine @ about 3 amps ...

and I assure you that you cannot look into the focused beam.

LarryDFW
 
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Gryphon

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The first two pins to the left are for the thermistor. Pin 3, 4, 5 is cathode. Pin 6, 7, 8 is anode. The back plate/heatsink is also anode.

Do you need to use all three wires on each connection, or are you
simply doing so to distribute how much current each wire gets.
 




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