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Project #149, Light oscillator project #151, Sound & light stepper circuit – Elenco Circuit Maker Sound Plus 200 User Manual

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Project #149

Set the adjustable resistor (RV) to the middle position and then turn on

the slide switch (S1). Wave your hand over the photoresistor (RP) and

the sound changes. You can adjust the sensitivity by moving the

adjustable resistor to a different position.

Light Oscillator

Project #151

Set the adjustable resistor (RV) to the far left and turn on the slide switch

(S1). The circuit produces around two pulses per second, which power

the speaker (SP2), lamp (L4), and LED (D1). Increase the rate by moving

the adjustable resistor to the right.

Sound & Light Stepper

Circuit

Change the 10mF capacitor (C3) to the 100mF (C4) and see how the time

changes.

Change the whistle chip (WC) to the 0.1mF capacitor (C2) and see how

the sound changes.

Project #150

Another Light Oscillator

Project #152

Another Light

Oscillator

CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 60