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Integrated Voice Memory

a novel decoration not just for Christmas time

Integrated Voice Memory
Integrated Voice Memory
With Christmas not far away this project is guaranteed to add a sparkle to the festivities.This novel design is of an electronic bell. The shape of the bell is outlined by a series of green LEDs while a moving light point on an arc of red LEDs represents the clapper. Each time the clapper hits the bell a delicate chime is generated.

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Materials

Component list

Resistors:
R1,R3,R4 = 47k?
R2,R7 = 470k?
R5,R8 = 1k?
R6 = 22k?
R9-R16 = 150?
Capacitors:
C1 = 100µF 25V radial
C2,C4-C8 = 100nF
C3 = 330pF
Semiconductors:
D1-D16 = red LED (no high-efficiency)
D17-D64 = green LED (no high-efficiency)
D65,D66 = 1N4148
IC1 = SAE800 Siemens/Infineon (Eurodis)
IC2 = 4514
IC3 = 4001
IC4 = 4516
Miscellaneous:
S1 = 2-pin header with jumper or switch
BZ1 = AC (Piezo) buzzer with connecting wires (dia. 24 mm).
PCB, order code 000116-1

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