Not really a beginner project.
the project will be built around these circuits or similar:
Proximity Sensor: [1]
VCA option 1: [2] (scroll down to last circuit)
VCA option 2: [3] (scroll down to last circuit)
VCO option 1 (555): [4]
VCO option 2 (Lamp): [5] (scroll down to pg 3, Figure 2a)
![[1]](http://4.bp.blogspot.com/_y4AYtND8Hz8/R-D1JQQcF9I/AAAAAAAAAKI/upWnOEC87_g/s1600-h/vsex_probe.jpg){kind=link}
![[4]](http://i.imgur.com/yZlS0Tz.png?1){kind=link}