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Hotlights PHR at 106mA






405nm tends to burn better than longer wavelengths, because it has higher energy per photon. They don't use red or IR in tanning salons, do they? :P
Silvershot: I'm not such a fan of the hotlights host, but it looks like a nice build :gj:
 
@MoonShadow
Basically, red has more photons. 100mW of violet or IR burns the same.

They use UV in tanning saloons because UV stimulates the skin, etc.
They don't use violet (~400nm)...
 
indeed v=λ*f where v is velocity, λ wavelength and f frequency. if v=stable, small λ means high f, thus higher energy per photon, since E=h*f (h is stable). But we need to have the same power in order to compare energies between different wavelengths,right?
 
:O @ Silvershot.

You must spread some Reputation around before giving it to Silvershot again.
You must spread some Reputation around before giving it to Silvershot again.
You must spread some Reputation around before giving it to Silvershot again.

;)
 
Hey, I saw your driver... I am building my own microdriver too, but I want to use a case-pin/positive pin bridge so I only have to solder one end as well.

But can you explain what the cap you hooked up connects to on the other side? I don't understand how you can have a cap with only one lead attached. Also, what's that wire attached to the cap in the first picture? I am confused. Mind drawing out a circuit diagram for me?
 
Hmm, he probably connected it to the flashlight body and batt negative, like a "gnd".
 
That would make sense... but how? Just solder the driver directly to the host? Seems like a messy solution.
 
some people like to solder a long wire to the GND (all 'gnds') and when the module goes into the host, hook the wire and press it together. I prefer solder a wire in the GND so it touches the wire inside teh flashlight/host. You need to do whatever is easier to you. :)
 
Hmm, I may need to see some diagrams, that didn't make sense to me =p Even though I am getting more and more experienced with electronics, the concept of a GND still doesn't make sense to me.
 
Alright, will do more research. But what do you mean by the battery GND? Sometimes I see the GND as negative, is that what you mean?

So I am thinking of doing something like this.... connect the case/negative pins together, then connect that to the host, then connect the battery negative (via spring) to the host, connect the battery positive to the driver positive input, and the driver positive output to the diode positive. Could I do that and ignore the driver negative input and driver negative output?
 
Wolfman29 said:
Alright, will do more research. But what do you mean by the battery GND? Sometimes I see the GND as negative, is that what you mean?
Click to expand...
yes.

beware when messing with drivers. What I said, applies to schematics etc.
You will need to search for each driver, individually, to know about GND plane etc.
Some drivers regulate the current based on the GND so you can't just wire the - of the battery to the host, the driver to the host and the diode to the host! It will bypass the driver!

As I said.. RESEARCH A LOT before trying.
 
Well, I am making this driver myself, probably going to be incredibly similar to the one used in this thread... so... no research to do if I am building it myself? Haha.
 
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