C1 2µf
R1 250kΩ
R2 500kΩ
Gives:
Out high ~1 second
Out low ~0.7 seconds
SW1 pressure switch that the phone sits on to activeate curcit
SW2 ringing sensor (I would like for this to be a switch, that once activated, to stay closed until SW1 is opened.)
I hope this helps some.
The trouble I am having is finding a switch for SW2 and figureing out which to use, a piezo or a photo dector.
With the piezo, I can't seem to find one that is sensitive enough to feel the vibrations of the cell phone. With the photo dector, I'm not sure if what wavelength to go with and which type. IE transistor, diode or what.