Snap Circuits 750-in-1 Manual

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Project #575
OBJECTIVE: To build a sun-powered oscillator circuit.
Solar Bird Sounds
Set the meter (M2) to the LOW (or 10mA) scale. With the slide switch
(S1) off, make sure you have enough light on the solar cell (B2) for the
meter to read 9 or higher. Now turn on the slide switch and listen to
the sound.
For variations on this circuit, replace the 100µF capacitor (C4) with the
10µF capacitor (C3) or replace the speaker (SP) with the whistle chip
(WC).
Project #576
OBJECTIVE: To build a sun-powered oscillator circuit.
Solar Bird Sounds (II)
Set the meter (M2) to the LOW (or 10mA) scale. With the slide switch
(S1) off, make sure you have enough light on the solar cell (B2) for the
meter to read 9 or higher. Now turn on the slide switch and listen to
the sound.
For variations on this circuit, install the whistle chip (WC) above the
0.02µF capacitor (C1), or install it across points A & B and remove the
speaker (SP).