FlexMod N2 Laser diode drivers have now arrived :)

[Lasernerd]

well mine arrived today

did you guys get heatsinks with the drivers?

[mikkojay]

FlexMod2 with ndrew2505's lpc815 adjusted to 330ma.
I don't have a power meter, but when it fired up, I looked like this -->
Beam enhancement via Camel Light. I wish I had 10 of these!
-Mike

[Laserman532]

FlexMod2 with ndrew2505's lpc815 adjusted to 330ma.
I don't have a power meter, but when it fired up, I looked like this -->
Beam enhancement via Camel Light. I wish I had 10 of these!
-Mike

cant you run the 815 up to about 450ma?

[mikkojay]

Do I hear 455? Woo Hoo!
Naw, this is my first one so I thought I'd keep it sane for a while.

[Laserman532]

Do I hear 455? Woo Hoo!
Naw, this is my first one so I thought I'd keep it sane for a while.

I know those lasers are insane - I idle mine at 365ma and average 210mw

[sbk]

well mine arrived today

did you guys get heatsinks with the drivers?

Nope... Though he said he will send one for each driver.

[buffo]

Pat and Mike:

DZ is running a burn-in test on an open can red diode right now... (not sure if it's the 815 you got from ndrew2505 or not though) He's driving it at an utterly insane 550 ma! And the damn thing won't die! I'll PM him and see if I can get him to post in this thread... (And yeah, he's using the Flex-Mod 2 driver.)

Adam

[DZ]

Sadly, the test diode died. Good thing is that I know why. I had about 4 lasers pointed to a black heat sink while testing them all. One of them, a maxymodule, was clamped to a heat sink with a large metal clamp. I moved it to test it's power, as I moved it, the beam from the 250mW one hit the side and instantly dropped to almost no output. Oh well, have to start over, this time I'll have to be a bit more safe about it. I'm asuming that the more output you have from these guys, the more suseptable they are to failing from back reflection.

Regarding the 550mA reading I had. When I measured that, it was with Pangolin's abstract generator running. It would seem that somewhere while outputing an abstract, the beam is turned off, then back on (at least, this is what I suspect). Later that day, I decided to unhook from Pangolin and throw a solid 5V from a 7805 to the modulation in put, when I checked the output power, it was 310mW! Not 250mW I was reading when connected to Pangolin. I turned the power back down to 250mW, but didn't check the current then. Now this thing had run for several hours with a current reading of 550mA, which is amazing to me....

[dave]

Just out of interest, what is the difference between these boards and the die4drive boards?

[mikkojay]

Hey DZ,
Out of curiosity, what kind of heat output have you noticed with these guys? I am trying to get an idea of what the heat sink requirements will be, especially as you pump em up. Is it less/more/same as a 405nm running at 100ma? I have 2 of the z-bolt heat sinks, but I was thinking about trying to cobble a couple cylindrical ones on the lathe out of a chunk of aluminum bar stock.
Keep on with the updates- very interesting!
Thanks, Mike