[Cyborg] 200 laser diodes

[Eric Boyd]

I sent a contact thing to the dude, asking if he's got any design 
information up anywhere, and about eye-safety of the device.  Because I 
think that's the key thing here: can a beam which is visible in e.g. a 
club (dim lights) also be eye-safe?

According to wikipedia (http://en.wikipedia.org/wiki/Laser_safety), to 
be legal (=eye safe), the laser must be <5mW, that makes it fall into 
class IIIa (now class 3R).  I found some fairly cheap IIIa laser diodes:

http://www.aliexpress.com/product-gs/263635799-Civil-Class-3A-red-650nm-5mw-dot-diode-laser-module-wholesalers.html

It's not clear to me if you need an external circuit other than a 
current-controlled voltage source to drive these.  I don't think so, I 
think that's what they mean by "module" as opposed to just buying the 
diode.  If you do just need a current controlled voltage source, we 
should be able to drive these directly from the North Paw circuit, all 
we need is some resistors in series with the "motor" outputs.

But I agree that while building the device, we'd need to have some 
goggles.  It'd give you a headache for sure if you caught one in the eye 
more than a few dozen times.

Anyone else interested in bulk ordering of these?  With shipping they 
are going to be about $4 each, so for <$50 you can have a pretty decent 
number of them.

Eric




On 6/2/10 11:52 AM, kristinneidlinger wrote:
> I want to build one!
> I did some design research of where they should be placed for a postal
> feedback suit and ended up with a huge headache!  So, we should look
> into some goggles too...
>
> k
>
>
>
> On Wed, Jun 2, 2010 at 10:39 AM, Eric Boyd <mrericboyd at yahoo.com
> <mailto:mrericboyd at yahoo.com>> wrote:
>
>     http://www.behance.net/Gallery/200-LDs-Stage-Suit-icommercial-casei/493017
>
>     OMG, this is the awesome-est light-up wearable outfit I've seen yet.
>     Lasers make LEDs seem so boring!  Even the "laser suit sample" is wicked
>     cool:
>
>     http://www.behance.net/Gallery/Laser-suit-sample/464787
>
>     Who wants to build one? I'm super keen, and if we build multiple units
>     we can push down the cost a little (laser diodes are expensive...)
>
>     Eric
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