Component List

Resistors

(body 2.5 × 6.8 mm)

R1, R22, R24 = 2.2 kΩ

R2 = 390 kΩ

R3, R5, R6, R7 = 82 kΩ

R4 = 1 kΩ

R8-R19 = 8.2 kΩ

R20 = 20 MΩ

R21 = 330 kΩ

R23 = 560 Ω

R25 = 470 Ω

R26 = 100 kΩ

Capacitors

C1...C4, C8...C18 = 100 nF, 50 V, ceramic X7R, pitch 5 mm

C5 =22 pF, 50 V, ceramic C0G/NP0, pitch 5 mm

C6 = 10 pF, 50 V, ceramic C0G/NP0, pitch 5 mm

C7 = 3...10 pF trimmer, BFC280823109 Vishay/BC Components

Semiconductors

D1, D13, D25, D37, D49, D61, D73,

D85, D97, D109, D121, D133 = LED, green, 3 mm

D2…D12, D14…D24, D26…D36, D38…D48, D50…D60,

D62…D72, D74…D84, D86…D96, D98…D108, D110…D120,

D122…D132, D134…D144, D162, D163 = LED, red, 3mm

Important: 3 mm round LED’s D1…D144 must have a flat side, no ledge!

D145…D156 = 1N4148, DO-35

D164 = 1N4004, DO-41

T1, T2 = BC547B

IC1 = CD4060, DIP-16

IC2 = 74HC21, DIP-14

IC3, IC4 = 74HC132, DIP-14

IC5, IC6 = 74HC4024, DIP-14

IC7…IC10 = 74HC4051, DIP-16

IC11 = 74HC4040, DIP16

Miscellaneous

K1 = 2-way PCB terminal block, 3.5 mm grid

S1 = 6 mm tactile pushbutton

X1 = 32.768 kHz crystal, 20 ppm, C_load 12.5 pF, 8 x 3 mm cylinder package (X32K768L104, AEL Crystals, pitch 1.1 mm)

Optional: DIP IC sockets, 14 contacts (IC2…IC6), 16 contacts (IC1, IC7...IC11)

PCB 240118-1