On Thu, 24 Feb 2011 19:09 -0500, "John Ferrell" wrote:
> Radio Control models sometimes use a cam on a standard servo to push a=20
> button. Usually the goal there is to totally isolate two separate=20
> electrical systems.


If you don't need chording (pressing more than one button at a time) you
can push two buttons alternately with the same servo using two pushrods.

Bob

--=20
http://www.fastmail.fm - Or how I learned to stop worrying and
                          love email again

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.