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106. Sound-activated flashing LED
Turn on the switch 15. When the LED
17
turns off, just clap your hands – the light will turn on
11
again for a while. The piezo buzzer
functions as a microphone.
107. Motor-activated flashing LED
11
with the electric motor 24. When the LED
17
Replace the piezo buzzer
turns off, gently turn
the motor shaft – the LED will again be activated for a while.
108. Sound-activated flashing lamp
Replace the LED
17
with the light-bulb 18. When the lamp turns off, just clap your hands – the
light will turn on again for a while.
109. Motor-activated flashing lamp
11
with the electric motor 24. When the LED turns off, gently turn the
Replace the piezo buzzer
motor shaft – the lamp will again be activated for a while.
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110. Sound-activated LED
Turn on the switch 15. When the LED turns off, just clap your hands – the light will turn on again
11
for a while. The piezo buzzer
functions as a microphone.
111. Sound-activated lamp
17
with the light-bulb 18. When the lamp turns off, clap your hands or say
Replace the LED
something out loud. The lamp will turn on again for a while.
112. Sound-activated star wars sound effect
Assemble the circuit as in the diagram. Replace the LED
17
with the loudspeaker 20. When the
sounds stop, clap your hands and once again you'll hear the star wars sound effects.
113. Loudspeaker instead of the microphone
11
with the loudspeaker 20.
Assemble the circuit as in the diagram. Replace the piezo buzzer
Turn on the switch 15. When the LED goes out (about 15 seconds), say something out loud or
blow with all your force. If your voice is not loud enough – just tap the loudspeaker with your
finger.
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