Elenco Electronics 202 - Manual (Page 64)

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Project #134 Fire Fan Symphony
OBJECTIVE: To combine sounds from the music, alarm, and
space war integrated circuits.
Project #135 Fan Symphony
OBJECTIVE: To combine sounds from the music, alarm, and
space war integrated circuits.
Modify the circuit from project #134 to match the circuit shown on the
left. The only differences are the connections around the alarm IC
(U2). It works the same way.
Build the circuit shown, note that in some places parts are stacked on
top of each other. Turn it on and press the press switch (S2) several
times and wave your hand over the photoresistor (RP) to hear the full
spectrum of sounds that this circuit can create. Have fun!
!
WARNING: Moving parts. Do not touch the fan or
motor during operation.
!
WARNING: Moving parts. Do not touch the fan or
motor during operation.