On 5/23/2024 7:07 PM, Jim the Geordie wrote:
Mouse suddenly started double (left) clicking
I had a look inside it looks as if the switches are sealed units.
Anyone cured this problem?
Restart doesn't work.
Did you take it apart and clean it ?
Fluff gets in there and modifies the clearances inside the mouse.
Fluff collects underneath the button-plates.
Switches are swap only. And especially if you bought two identical mice,
and one mouse has become a "donor" for the second mouse.
Tolerances are pretty tight. You can usually tell by touching
the plunger on the top of the switch, why it isn't working.
A "good" switch, the plunger is secure. A "worn" switch, the
plunger may wiggle a little bit, telling you the spring inside
isn't pressing upwards like it should. Or, the top of the plunger
is worn flat, and the plunger is not getting fully depressed.
If you have a mouse with side-buttons, you can check the
switch type on those. As the side-buttons may not be a
"priority item" inside the mouse, from the user point of
view. You really need the left-click to be working.
Switches can have three contacts. Normally Open, Normally Closed, Common.
The circuit could be using two of those electrical connections only,
or, it could use all three if it wanted. With your finger off the
button, the path from Normally Open to Common is open circuit.
With your finger off the button, the path from Normally Closed to Common
is a short circuit (switch closure). This gives engineers maximal
flexibility when designing interface circuits.
Paul
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