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i20 SOUND TRIGGER
SAMPLE CIRCUIT
i20 SOUND TRIGGER
p1 POWER
o9 BARGRAPH
MINI-CHALLENGE
Can you invent a
notification that tells you
when it gets too loud?
8
"–" decrease,
SENSITIVITY:
"+" increase.
This is the component that
measures sound.
REAL WORLD ANALOGIES
CLAP ON LIGHT
MEET THE BIT
Use this Bit to control your
circuits with sound! The
sound trigger listens to the
noise level in your room,
and sends an
when it gets over a certain
level. Try it with a Bit that
lights up to create a circuit
that responds to the snap of
your fingers.
HOW IT WORKS
The sound trigger has a
microphone that measures
how much noise is around
it. When the noise gets to
a certain level, the sound
trigger will let the signal from
the previous Bits through
for three seconds. Use the
adjustment dial to set what
noise level you'd like the Bit
to be triggered at.
HUMAN EAR
signal
ON
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