[sdiy] Question about a mod on a LFO.....

[mathieu.vallet1 at free.fr]

HI!
i'm french so excuse me for bad english

So I built the Ray's lfo oscillator from the url:
http://www.musicfromouterspace.com/analogsynth/coolnewlfo.html

But

How can I use a metal plate copper or Theremin antenna instead of the
Frequency's pots of 100k, Is that possible?? I want to activate the sound when
I touch a metal plate copper or antenna ( more and more I approach the antenna
with my hand and more and more the frequency  is high , or more and more I
touch a side of the metal plate copper and more and more the frequency is
high).

thanks  if you can help me