Component List

Main unit

Resistors
R1,R2,R4 = 10 k              
R3,R5 = 200 k   

Inductors
L1 = 100 nH

Capacitors
C1 = 10 nF                                                  
C2,C4,C5,C6,C7,C10,C12,C13,C18 = 100 nF                                                 
C3,C11 = 33 pF                                                 
C8,C9 = 12 pF
C14 = 100 µF, 25 V radial
C15 = 100 µF, 16 V radial                         
C16 = 15 µF, 500 V radial

Semiconductors
D1...D8 = 1N4007                                                        
IC1 = ATMEGA328P
IC2,IC3 = MSGEQ7
IC4 = 78L05

Others
JP1,JP2 = 2-way terminal block                                                      
Q1 = crystal 20MHz                                     
SV1 = 6-way SIL header
SV2 = 8-way SIL socket
SV3 = 3-way SIL header or stereo jack connector
Mains transformer 9 V 1 VA
Mains transformer 350 V 1 VA (see text)

Dekatron unit

YOU NEED EVERYTHING BELOW 7 TIMES!

Resistors
R0..R7 = 10 k
R8 = 820 k

Capacitors
C20 = 100 nF

Semiconductors
T0...T6 = MPSA42
IC1 = 74HC595N

Others
SV1 = 8-way SIL header
SV2 = 8-way SIL socket                                                
6802 Dekatron with octal socket