Elenco Snap Circuits® Deluxe Sound & Light Combo - Manual (Page 163)

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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
cable should stand straight up in the holders, without
bending them.
Turn on the slide switch (S1) and press some of the green
& blue keys on the keyboard (U26) to get interesting light
and sound effects.
Project 387 Funky Fiber Feedback
Black
Clear
Build the circuit and turn on the slide switch (S1). Move the lever
on the adjustable resistor (RV) to vary one tone, press the green
keys to make a second tone, and press the blue keys to make a
3rd tone. Turn the TUNE knob on the keyboard (U26) to adjust
the tone of the green keys.
Project 388
3 Tones & Light
SCC-350_Manual_Part_C.qxp 7/25/14 2:11 PM Page 51