Phlatlight Red LED From the Casio Projector Burns Stuff!

[Deleted member 8178]

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:

The LED:

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

Optics:

 

[ElektroFreak]

No pics of the thing while running? Skip the best part why don't you...

 

[Asherz]

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

 

[daguin]

No pics of the thing while running? Skip the best part why don't you...

See the video above

Peace,
dave

 

[ElektroFreak]

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

 

[Deleted member 8178]

Here I just took a few more pics:

The die at different currents, starting at 8.1A:

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

 

[ElektroFreak]

Nice!! What's the pinout on those?

 

[Deleted member 8178]

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.

 

[HaloBlu]

You likely didn't notice but your "resistor" is leaving some char marks on your nice 2x4
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?

 

[charliebruce]

You likely didn't notice but your "resistor" is leaving some char marks on your nice 2x4
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?

 

[Deleted member 8178]

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!

 

[HIMNL9]

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

 

[daguin]

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

-- sits up and takes notice :san:

Peace,
dave

 

[LarryDFW]

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

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

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

LarryDFW

 

[HaloBlu]

"pocket-size self-defense helper" .....

I'm also quite interested in what you have planned. :san:

 

[Gryphon]

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.