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Never stare at burning light-bulbs
121. Mix of sounds
Assemble the circuit and close the switch
15
(ON). You'll hear machine gun fire and the light-
bulb with blink. Whenever you touch the sensor plate 12, you'll hear a new sound from star
wars along with the machine gun fire.
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122. Intermittent Musical Doorbell
Assemble the circuit. Press the button
14
– the light-bulb
18
flashes and you'll hear the sounds
of music and machine gun fire from the loudspeaker 20. This is the result of using sounds from
the signal IC to control the music IC.
123. Two intermittently flashing lamps
Replace the loudspeaker
20
with the LED
17
(with the "plus" at the top). When you press the
button 14, the light-bulb and the LED will flash intermittently.
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