Quantity   Component name
2 × 555 timer IC
2 × 470 ohm linear taper potentiometer
1 × white oak scrap
1 × 4 uf electrolytic capacitor
1 × .01 uf capacatior
1 × .001 uf capacitor
1 × 1000 ohm resistor
2 × cadmium sulfide photocell
1 × 4 ohm speaker
1 × 9 volt battery clip
2 × 1/8th inch brass rod 36"
1 × 3/16th inch brass rod 36"