PC Board Layout
Parts Placement
C1 : 10.1uf Mylar Capacitor0.1uF Ceramic Disc Capacitor
IC1 : 4017 IC
IC2 :555 Timer IC
L1-L98 : Jumbo LED (any colour but blue)
Q1-Q5 : 2N3904 NPN Transistor
R1 : 4.7k Resistor
R2 : 680k Resistor
R3-R7 :470 Ohm Resistor
MISC :PC Board, 9V Battery Snap, IC Sockets
Nguồn : aaroncake.net
