FlexMod N2 Laser diode drivers have now arrived :)

[SideFX]

..when I checked the output power, it was 310mW! [..]

Did you use an acrylic or glass lens for collimation?

[DZ]

Out of curiosity, what kind of heat output have you noticed with these guys?

Really not much at all. I've got it fairly well heat sinked, it's in an old scanpro mount. Touching the mount or the aixiz module, neither was warm to the touch. The heat sink on the flexmod was rather warm though.

Did you use an acrylic or glass lens for collimation?

I *think* it's a glass lens. Here's a pic of the setup, it's not like the typical lenses I see with the aixiz modules so I'm guessing it's a glass one?

[drlava]

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

Hmm, from a quick look at the website it looks like the differences (other than the way you mount them) include:
-Wider input voltage range
-Higher current drive capability
-Higher power capability
-Adjustable speed
-Protection from input over-voltage on 0-1A range
-11-turn pots instead of single-turn for precise adjustment

DZ, yep that's a multi-element glass aixiz lens there.

[mophead]

Question:

I'm setting up a flex for a dual LOC red, but the gain pot doesn't seem to do anything. It is set up exactly like my other one, which works fine. The other one is set for 20ma 0bias and 230ma with +5 on the mod line.

I can adjust the 0bias no problem but when i put +5 on the mod line, it does nothing--just stays at 20ma and no amount of adjusting on the gain pot does anything.

Best i can tell, my soldering is good. Any Ideas or test points?

Thanks,

doug

[drlava]

Double check your range-setting solder blob first. Then touch your hot soldering pencil to the solder joints of the resistors next to it and the 102 resistor on the other side of the gain pot, and the gain pot joints. Should take care of it, if not send me a PM for my address.

[mophead]

Best i can tell, my soldering is good.

Having a closer look, my soldering is crap.

Cold joint on the blob. Well flux-me-running.....

thanks fer the help.

[drlava]

you're not the first to do that!

glad it worked out.