Elenco Snap Circuits® Deluxe Sound & Light Combo - Manual (Page 157)

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Project 370 Optical Sound
Maker
Build the circuit and turn on the switch (S1). Vary
the amount of light shining into the photoresistor
(RP) to change the sound from the speaker. Wave
your hand over the photoresistor to make music.
At low light levels there will not be any sound.
Note: If the photoresistor is covered or in a very
dark room, the circuit may lock up. If this happens,
increase the light and turn the slide switch off and
on to reset the circuit.
Project 371
Optical
Strobe Light
Use the preceding circuit, but replace the
speaker with the white LED (D6). Now you
have a light-controlled strobe light!
Project 372
Left Right Bright Light
Turn on the slide switch
(S1) and move the
lever on the adjustable
resistor (RV) around.
The color LED (D8) is
bright if the lever is to
the far left or far right,
and dim if the lever is in
the middle.
Project 373 Weird Echo
Turn on the slide
switch (S1). Move
the lever on the
adjustable resistor
(RV) around to vary
the echo.
SCC-350_Manual_Part_C.qxp 7/25/14 2:11 PM Page 45