On Sun, 16 May 2021 03:25:52 +1000, "Rod Speed"
wrote:

T i m wrote
John Hall wrote

Maybe the mouse is slipping on the pad? You could
try cleaning the mat and the underside of the mouse, as
grease tends to build up. You could even try dispensing
with a mat, if the top of your desk isn't too shiny.

I once bought a 'proper'(?) optical mouse mat and the Apple mouse
wouldn't work on it at all and my Logitech optical mouse was far less
accurate on that than on my leg! ;-(

I got the reverse effect with my Logitech M560. Wouldn't work at
all on my now extremely daggy ex book cover that I use to run the
mouse on with the cover on my lap in the big arm chair with my
feet up on the footstool that I do all my computing from.
https://www.dropbox.com/s/20wi83kl8v..._2880.jpg?dl=0
so I had to use a proper mouse mat on that.

Interesting patination. Was that there originally or grown there over
time?

That mouse wont track on the fleece on my chest in winter either.

I have a HP (branded?) wireless optical mouse I use via a 4 way KVM
switch when trying or setting up new stuff and often use the mouse on
the bed and that's fine.

The replacement Logitech M705 tracks fine on both without the
mouse mat.

You would think the same make and general functionality (ball v
optical reflective v camera(?)) would behave equally on the same
surface?

I still use the mouse mat on the extremely daggy ex
book cover just because the extremely daggy ex book cover is
now so rough and doesn't work well for the mouse feet.

That's something I have noticed on long-surviving mice, the feet
wearing out.

With any luck Pamela will burst a blood vessel or something
when she sees the extremely daggy ex book cover :-(

I replaced the M560 with the M705 because the left mouse
button on the M560 has done the usual multi clicks on a
single left mouse click which is what has happened to all
the logitech mice I have ever owned.

Oh? Something I need to watch out for on the one I'm using here then
(M720).

I used to get all
those mice for free because by the time that the button
fails, its still in the very long warranty and they can no
longer supply that mouse and so do a full refund.

Good customer service.

Didn't work out like that with the M560 tho, I stupidly
bought 2 at the same time with a 3 year warranty so
I could just reach for the other when the first one
failed, but obviously when the second one failed
it was well outside the warranty period.

Doh. Mind you, I have quite a few new things here I bought ready for
that next_on_the_list project that didn't turn out as hoped.

I try to test electronics I buy (more often online) at least to check
it works generally (not so easy on a multipin / function device like
an ESP32 micro controller but luckily they aren't too much money. ;-)

Cheers, T i m