Elenco Upgrade Kit SC100 to SC750 - Manual (Page 24)

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Project #154 Fire Fan Symphony
OBJECTIVE: To combine sounds
from the music, alarm, and space war
integrated circuits.
OBJECTIVE:
See project #156.
The preceding circuit may be too
loud, so replace the speaker (SP)
with the whistle chip (WC).
Project #157
Fan
Symphony (II)
OBJECTIVE:
See project #154.
Project #155
Fire Fan
Symphony (II)
Project #156 Fan Symphony
OBJECTIVE: To combine sounds
from the music, alarm, and space war
integrated circuits.
Modify the circuit from project #154 to
match the circuit shown on the left.
The only differences are the
connections around the alarm IC
(U2). It works the same way.
The preceding circuit may be too
loud, so replace the speaker (SP)
with the whistle chip (WC).
Build the circuit shown and add the
jumper to complete it. Note that in one
place two (2) single snaps are stacked
on top of each other. Also, note that
there is a 2-snap wire on layer 2 that
does not connect with a 4-snap wire that
runs over it on layer 4 (both touch the
music IC). 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. Do
not lean over the motor.
!
WARNING: Moving parts. Do not touch
the fan or motor during operation. Do
not lean over the motor.