I would use one of the speaker types that has a dome shaped mirror on it's
voice coil with a shallow entry angle you should be able to get a nice
deflection off these


just my $0.02

Peter

----------
From:   Alan King
Sent:   Wednesday, December 17, 1997 10:06 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        Re: Servo Laser Control

Fine is the key word.  Very little angular deflection.  Not too useful
unless you need a 1" pattern on the wall on the other side of the room..


Andrew Mayo wrote:
>
> A very interesting idea indeed. Now, where's an old CDROM drive.....
>
> > ----------
> > From:         William Chops Westfield[SMTP:billw@CISCO.COM]
> > Reply To:     pic microcontroller discussion list
> > Sent:         Tuesday, December 16, 1997 12:20 PM
> > To:   PICLIST@MITVMA.MIT.EDU
> > Subject:      Re: Servo Laser Control
> >
> > The read/write head of CDROM drive has a pretty impressive set of
> > degrees of
> > fine motion that I image are used for focus and "fine" movement.


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