Signal to noise ratio (Was Re: Adapting serial mice to quadrature systems)

From: Jason Kyle <jpk_at_jpk.co.nz>
Date: Wed Jul 11 22:59:23 2001

At 15:17 12/07/2001, you wrote:
>Jason Kyle wrote:
>
> >Most mice actually start off with quatrature output position detectors and
> >are then converted to serial. I had to replace an Amiga2000 mouse once,
> >ended up removing the mouse chip and wiring the detector outputs straight
> >into the amiga mouse port - works fine - no PIC required.
>
>True, but like Tony (?) said a while back, most modern PC mice are very
>integrated, so separating the quadrature from the serial converter really
>isn't feasible, one will have to eventually add some discrete electronics
>anyway. Right?

You and Tony are knocking the addition of a simple hex inverter as a quick
and simple method that nearly anyone with basic electronics skills can use
to make a quadrature output mouse, how many people have PIC programmer
lying around? Yes the PIC based converter is the best solution in the
whole world, yes my approach which works and took about 1 hour in total is
crap and shouldn't be used by anyone. No need to respond, there's enough
noise on this damm list already and i've just added to it. Anybody know of
a classic computing list 1. has a better signal to noise ratio and 2. has a
volume suitable for those who don't have copious spare time.


>This solution is a bit more lucurious, though, since the PIC will take the
>wheel button and turn it into an Amiga-digestable format.
>
>--
>En ligne avec Thor 2.6a.
>
>G? med i SUGA, Swedish Usergroup of Amiga!
>WWW: http://swedish.usergroup.amiga.tm/
>BBS: 08-6582572, telnet://sua.ath.cx:42512
Received on Wed Jul 11 2001 - 22:59:23 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:33:51 BST