445nm diode up an running!!!

[Byrnz93]

Nice! Can't wait to get mine

 

[kingdave2357]

Maybe i missed it, but did you tell us what power your pumping? Burning ability sounds amazing. Sometime try some other things, with it focused. Like wood burning...It's always fun to write stuff in wood! I wrote my name 1x8" bold with a bluray once on a scrap peace of wood

*whistles* Videos are always...cool

Cant accuretly test the power as my LPM 1 doesnt have a setting for this wavelength, but the OP has the results tested as 473nm, I belive it is around 300mW at the moment, using rkcstr set to max(around 434mA)...

Thanks for letting how it compares to 473nm & 405nm & for the pics!

The pic of the comparison isnt as accurate as I was hoping, they all look similar in the pic, however the 445nm is a nice rich real blue color, while 473nm looks lighter and more teal next to it.

I am going down to work with my diode some more, I hope to have it on a flexdrive later today. Here is a nice beamshot I took earlier, notice all my beamshots here so far are withOUT any introduction of foreign particles in the air, just household dust!!!

 

[Flaminpyro]

Very good ! sounds like we need a custom built linear driver to take care the current these guys can eat

 

[Bionic-Badger]

I like how you captured the color of the laser really well. Too bad my CR2 battery died so I can't do comparisons with a 473nm :\

 

[Benm]

Wow

Sitting there in that huge heatsink it looks like it packs some serious punch, and it actually does... i love the color, bluray be gone!

 

[kingdave2357]

Wow

Sitting there in that huge heatsink it looks like it packs some serious punch, and it actually does... i love the color, bluray be gone!

Lol, I love that heatsink!! As soon as I swap out the rkcstr for a flexdrive I will be taking it up alot higher, cant wait to see what it can really do!!

Yeah, blu-ray is almost dead, cant hold a candle:can: to these beasts, and the nice rich blue color gets soooo bright, so much more appealing than violet!!( I still like violet btw, but 445nm blows it away!!!)


EDIT: People were asking about the burning ability, well at its current setting and taken to its focal point, instantly blazes through almost anything black, electro tape is the best, trash bags are'nt even noticed by the laser, just shines right through them without even stopping for a microsecond. I have been using a tan cardboard box for the 'beam stop' and I just noticed several black burnt spots that werent there the other day, so I'd say for all the pyros out there, this is the cream of the crop!!!

Best diodes EVER:bowdown:

 

[ff-racer]

This morning I got my build together. MXDL 4171 Host, My custom machined heat sink, V5 Flexdrive and 18650 Li-Ion non protected battery. I noticed the driver getting pretty hot so I decided to heat sink it. I just used thermal paste an made a hold down clamp. I can still go back in and make output adjustments. Output now is 750mw using the G-1 glass.
I was in a hurry to build so I promise to plot out my next diode.

Doug

 

[kingdave2357]

This morning I got my build together. MXDL 4171 Host, My custom machined heat sink, V5 Flexdrive and 18650 Li-Ion non protected battery. I noticed the driver getting pretty hot so I decided to heat sink it. I just used thermal paste an made a hold down clamp. I can still go back in and make output adjustments. Output now is 750mw using the G-1 glass.
I was in a hurry to build so I promise to plot out my next diode.

Doug

750mW!!! Nice! How much current are you feeding it?

 

[ff-racer]

Quote: 750mW!!! Nice! How much current are you feeding it?

My V5 driver is set to 900mw. DVM set between output of driver and Pos in to diode.

 

[pHeneX]

Quote: 750mW!!! Nice! How much current are you feeding it?

My V5 driver is set to 900mw. DVM set between output of driver and Pos in to diode.

:thinking:
Did you set your drive with the diode connected? Or did you use a test load..

 

[JellyCrab]

So with only ~300mW it has a visible beam in daylight? Was it brighter to the naked eye? I plan on driving mine at 600mA in a labby. I can't wait

 

[ff-racer]

The Diode was connected. Ramped up slowly.

:thinking:
Did you set your drive with the diode connected? Or did you use a test load..

 

[HumanSymphony]

This morning I got my build together. MXDL 4171 Host, My custom machined heat sink, V5 Flexdrive and 18650 Li-Ion non protected battery. I noticed the driver getting pretty hot so I decided to heat sink it. I just used thermal paste an made a hold down clamp. I can still go back in and make output adjustments. Output now is 750mw using the G-1 glass.
I was in a hurry to build so I promise to plot out my next diode.

Doug

I'm liking your driver setup on that. Nice

 

[kevinmassey]

So ff you got 750mw @ 900ma? If that's right I'll add you to the graph.

 

[RA_pierce]

@ ff-racer

Keep in mind that the V5 flex is not meant to sustain high currents with a diode that has a high Vf.
Your diode may not be getting the full 900mA because the driver is not designed for that.
The V5 Flex manual tells you what the recommended operating parameters are.

Anyway, nice work.

 

[HumanSymphony]

@ ff-racer

Keep in mind that the V5 flex is not meant to sustain high currents with a diode that has a high Vf.
Your diode may not be getting the full 900mA because the driver is not designed for that.
The V5 Flex manual tells you what the recommended operating parameters are.

Anyway, nice work.

Flexdrives work fine with these 445nm diodes as Spyderfire has shown

Their Vf isn't as high as blurays. Jayrob recorded 3.91v @ 475mA and 4.03v @ 640mA

So it shouldn't even hit 4.5 Vf, but i'll use that as an example

Using the formula given in the manual for the flexdrive v5:

(Vout (Volts) * Iout (Amps) ) / Vin (Volts) < 1.2

4.5 * 0.9 / 4.2 = 0.964

and even with 3.6v input it's within the limits:

4.5 * 0.9 / 3.6 = 1.125

Edit: but if the Vf is going up linear with jayrobs voltages as the rule, it should be under 4.2-4.3 Vf