Elenco LIGHT - Manual (Page 27)

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Project 15 Color Light Transporter
Project 16 Color Optics
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 switch (S1). The color LED (D8) turns on
and off repeatedly as it changes colors. This produces
interesting effects when connected to the speaker
circuit through the fiber optic cable.
Build the circuit as shown. Place the black cable holder on the color
LED (D8), then place the fiber optic cable into the holder as far as it will
go. For best performance the fiber optic cable should stand straight up
in the holder, without bending it. Leave the other end of the cable free.
Turn on the switch (S1), and look into the loose end of the fiber optic
cable. Flex the cable into loops but don’t dent it. Take the circuit into a
dark room and see how the cable looks.
You can use the clear cable holder on the color LED instead of the black
holder.
Light can travel through
fiber optic cables over
great distances, even
through bends and
curves.
Black
Clear Black