Everything-that-moves ALARM

[jess]

Hello,

I'd like to build Thomas Scarborough's "Everything-that-moves ALARM" circuit but am not sure how to configure the #30 s. w. g. enameled copper wire for the Tx & Rx. I just recently purchased all the components and the enameled copper wire to complete this project but need some clarification to proceed. In the circuit diagram it shows the Tx & Rx are formed in a circular fashion. If I was to make the Tx out of a 12 foot (144 inch) form (as suggested in the notes) in the shape of a circle then to have 5 turns in that form then I would have to wind it once for each 28.8 inches of the length of that form? What material would I use for the forms to have them inconspicuously hidden under, say a carpet?

Can anyone here explain the best way of doing this?

Thanks
jess

[hotwaterwizard]

It looks like a Theremin.

Project Location
http://www.electronics-lab.com/projects/sensors/030/index.html

Alternate Location.
http://www.circuitdb.com/show.php?cid=45

The Author of the Project may offer you some help.
Thomas Scarborough
[email protected]




Theremin Sensor

http://www.thereminworld.com/schematics.asp

http://thereminvision.com/

http://thereminvision.com/version-2/TV-II-index.html

http://www.physics.gla.ac.uk/~kskeldon/PubSci/exhibits/E9/

Analog Theremin



Digital Theremin

[jess]

Hi hotwaterwizard,

Thanks for Thomas Scarborough's email address. I sent him an email a week ago and so far no responce. I'm really surprissed that no one else here has tried this circuit.

Thanks
jessey