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I'm looking to add color variety to a laser display. If there aren't any diodes being manufactured in this rough operating range, then it's no big deal. Currently the system uses 650nm and 532nm, because as you all know that is where the best price to performance for low power is found. I'm...

That's a tad pricy, probably because the higher power rating. I'm definitely thinking about trying one out driven at const optical power. It's hard to compete with red laser diodes for visibility and price, but that's what happens really. I agree with the dim problem.

Are there any lower divergence/power 445nm diodes around for a reasonable price? I mostly see higher power diodes here and on other sites, since those appear to be all the rage. The best solution for the project would be a collimated module, but I would be happy with a bare diode as well.

I can't help you much right now, as I'm in the process of putting custom current drivers together to power the thing and I don't have a full solution yet, but I've been working on adding a 30w diode laser cutter to my homebuilt 3d printer. If you are looking for resources, the marlin 3d printer...

If you have to do a bunch of connections at some point, I have had good luck so far with loctite 648. It has the disadvantage of not leaving an epoxy bead on the end of the connector, but other than that it works well. Cheaper than the epoxy and you might already have it. Main difficulty I have...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Chloderic, have you tried taking a hair dryer to some of the ic's? It might be that the temp reading is not a part of the ccd at all (is it even necessarily temperature at all?). Lightly warm the CPLD and see if the number changes.

Re: B&Wtech 473nm unit / Spectrometer Mods & Info I am not sure if you were talking about the laser or spectrometer cooling, but the laser appears to have a thermistor for each TEC at least. Speaking of, if anyone has made any headway on the laser controller other than the old info on...

First off, great community you have here. I've been lurking for a while, and have seen a lot of friendly interactions. Quick Bio: I am a student of electrical and optical engineering in Oregon, and I will be trying to keep myself mostly professional because that tidbit and my name probably...