Olin Lathrop wrote:
> YES NOPE9 wrote:
>> #1 =A0 Using nitinol wire to push the button. =A0 Current through the
>> =A0 =A0 =A0wire =3D=3D> Heat =3D=3D> wire expands
>
> There are off the shelf products that do this already. =A0I vaguely remem=
ber
> they are called something like "electronic pistons".
>
>> #2 =A0 Using tiny audio
>> speakers to push a wire in a coax cable shell. =A0Like the cables used
>> for bicycle brakes.
>
> That sounds like quite a kludge. =A0Why not just a ordinary solenoid? =A0=
It is
> meant to move a plunger, as apposed to a speaker which is meant to move a=
ir.
>

An FDD step-motor drive can be the option as well.

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