Broken mouse! - fixed

From: Hans B Pufal <hansp_at_aconit.org>
Date: Fri Sep 13 00:11:00 2002

John Honniball wrote:
> Hans B Pufal wrote:
>
>>After taking the mouse apart, I realised that my original diagnostic was
>>incorrect. It only has one LED, the other "LED" is actually a sensor.

> I'm wondering if this is actually like a Sun mouse, and that second
> "LED" is an infra-red one. The Sun mice have both LED and sensor
> behind a completely spherical lens, one for X and another for Y
> position.

Externally it is identical to a Sun mouse, but the electronics and the
cabling is different (at least for the one example of the Sun mouse I
disassembled. The proinciple of operation is the same,- one LED and one
sensor. The MSC part number for the Sun mouse :401162-035/D is the same
as for the CDC one except for the suffix after the hyphen. I suspect the
suffix changes depending on the connection type and also probably the
version of the electronics. Mouse Systems made these mice for many years
and for many OEM's.

> The first time my friend Beccy saw an optical mouse, she had to
> find out how it worked, and took it apart. Moments later, two tiny
> round lenses popped out and rolled away... they're quite hard to
> find, being transparent!

Indeed, luckily mine stayed inside the mouse and were quickly recaptured.

  -- Hans
Received on Fri Sep 13 2002 - 00:11:00 BST