On Thu, 3 Aug 2000, Snail Instruments wrote:

> >I have been thinking about that aswell, it's pretty much like a megabit-range
> >laserdome isn't it :-) A standard laserpointer reaches some 100 meters I
> think,
> >and that would be enough for many purposes. However, it might be
> troublesome to
> >modulate that kind of devices with very high frequencies by just "turning the
> >button on and off". Has anybody reverse-engineered a pointer device like
> that?
>
  The standard laser pointer curently sell on the market, have about 2.5
mW radiation power, tipical wave lenght 640...650 nm and can be easily
modulated up to 10KHz with a standard npn transistor. Also may be suplied
up to 9V (standard is 3V) but laser diodes is ageing quickly.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics