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proximity sensor as an on/off switch

sir

Dec 6, 2011
2
Joined
Dec 6, 2011
Messages
2
Hello to all,

I would appreciate any help with finding a solution to this problem.

Bored with the dashboard in my car I am designing yet another new version. This time I intend to replace the normal push button switches with "touch switches". Essentially just a proximity switch in the dash.

The problem I have is that they are non-locking by design. I need to be able to "touch" the sensor, to power a relay (for the car lights etc) and to stay in that state until it is touched again, to power off the circuit.

I think I'm missing something obvious. What could I possibly use between the sensor and the relay that would do the job ?

Any advice welcome !: :)
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Grasshopper, I would suggest you look at a D type flip flop with the Q-bar output connected to the D input and your touch switches connected to the clock input.

Like the last example on this page.
 
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