proximity switch for carbon fiber toneoarm

[Pierre]

I am planning to create a circuit with a push solenoid electromagnet to automatically lift the arm of my turntable when it finishes playing a record. I was thinking of using a momentary push button that will be hit by the arm and will close a circuit and operate the electromagnet tho move the lever that lift the arm. However I realise that the pressure that the tonearm can put on a button is probably very small (?), so I was thinking of using a proximity switch. The tone arm is carbon fiber, so inductive switch would not work unless I fix a piece of metal to the tonearm. But how big this need to be?. Instead, would using a capacitive proximity switch work? I am no expert and it's the first project I am trying to do. Help would be most appreciated.

[Pierre]

All working now.

[Pauldf]

You could of course opted for an IR emitter and receiver using the arm to cut the IR beam but glad to hear you have it working.