Component list
Resistors:
R1,R2 = 27kOhm
Capacitors:
C1 = 4n7
Semiconductors:
IC1 = NE555
Miscellaneous:
BZ1 = buzzer
2 PCB solder pins
2 solder pin receptacles soldered to long wires (stripped ends)
6 pieces of (bare) wire
PCB, prototyping board, order code UPBS-1
9 V-battery with clip-on leads
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