Shawn Yates wrote:
>
> I have some general question about making a line of site communication
> device.
>
> I want it to be able to go about 200 feet.  Can an IR diode go be detected
> from that distance?  If not I assume I will have to go to a laser.  Are
> there any off the shelf laser communication modules, or is it easy enough
> that I can just make one myself?  What do the classes of laser mean?
>
> Any ideas or just general input is appreciated.


We have remote testers at our shop, I have seen normal
TV remotes with one IR led at 30mA good for about 50 feet,
I assume if you use more power and a few IR leds and a
parabolic reflector (torch?) you can get a few times
this distance.

Remember sunlight will have a VERY bad effect on your
IR remote distance.
-Roman

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