Tell Fortunes  With a Wave of Your Hand
Basic System Diagram
INPUT
Dark Detector
using the LDR and NAND gate
 
PROCESSOR 1
RC1
Controls the Timing of the Roll-Down
PROCESSOR 2
4046-VCO
 
PROCESSOR 3
4017 
Walking Ring Decade Counter to control LEDs
 
PROCESSOR 4
Timed Off
as a power saver.
RC3 Controls the Transistor that cuts powere to the LEDs
 
 
OUTPUT
LEDs
 

Graphic System Diagram