Elenco LIGHT - Manual (Page 62)

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Project 132 Blow On Fiber
Project 133 Fiber Music
Build the circuit as shown. Place the clear
cable holder on the color organ (U22) and
the black cable holder on the
phototransistor (Q4), then place the fiber
optic cable into the holders as far as it will
go. For best performance the fiber optic
cable should stand straight up in the
holders, without bending them.The clear
holder will be a loose fit.
Connect a music device (not included) to
the color organ as shown, and start the
music on it. The music plays on the speaker
(SP) while the LED on the color organ
controls the red LED (D1) through the fiber
optic cable. Set the volume control on your
music device for best light & sound effects.
MP3
player
Build the circuit as shown. Place the clear
cable holder on the color LED (D8) and the
black cable holder on the phototransistor
(Q4), then place the fiber optic cable into
the holders as far as it will go. For best
performance the fiber optic cable should
stand straight up in the holders, without
bending them.
Turn on the slide switch (S1), and blow on
the microphone or talk loudly into it. The
signal from the microphone will be sent
through the fiber optic cable to the right half
of the circuit, to activate the red LED (D1).
+
Black
Clear
Clear
Black