12 Sep
2002
12 Sep
'02
5:11 p.m.
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