Elenco Circuit Maker Sound Plus 200 - Manual (Page 53)

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Project #117 Hissing Foghorn
Project #118
Hissing & Clicking
Modify the circuit in Project #117 by replacing the 100KW resistor (R5) with
the photoresistor (RP).
Move the adjustable resistor (RV) setting until you hear hissing sounds,
and then shield the photoresistor while doing so and you hear clicking
sounds.
Build the circuit on the left and move the adjustable resistor (RV) setting.
Sometimes it will make a foghorn sound, sometimes it will make a hissing
sound, and sometimes it will make no sound at all.
Project #119
Video Game
Engine Sound
Remove the photoresistor (RP) from the circuit in Project #118 and instead
touch your fingers between the contacts at points A4 and B1 on the base
grid while moving the adjustable resistor (RV). You hear a clicking that
sounds like the engine sound in auto-racing video games.
CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 53