Elenco Electronics SNAP CIRCUITS SKILL BUILDER - Project 106 Music Alarm Combo; Music Alarm Combo Circuit; Project 107 Hit the Target; Hit the Target Circuit

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Hit the Target
Turn the slide switch (S1) on and you hear the sound of a bomb dropping and
then exploding. The LED (D1) lights and then ashes as the bomb explodes.
This is one sound generated from the space war IC (U3).
Use the preceding circuit. Replace the slide switch (S1) with the motor
(M1). Turn the shaft on the motor and now it sounds like a bunch of
bombs dropping.
Project 108 Many Missiles
Project 107
Build the circuit shown and then place the
alarm IC (U2) directly over the music IC (U1),
resting on the three 1-snaps. Turn on the
slide switch (S1) and you will hear a siren and
music together. After a few seconds, covering
the photoresistor (RP) will stop the music (but
the siren continues).
Music Alarm ComboProject 106