Manual

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48. Light-Sound Circuit
Build the circuit, press the switch (62), the alarm
(78) will sound very faintly. Then you will see the
colorful LED (72) turn on. The ber optic tree (40)
will be lit up with the colors of the LED. Circuits like
this are used a lot in toys that light up and make
sounds when you turn them on.
49. Light-Sound Activation
Build the circuit, press and hold the press switch
(61), the alarm (78) will sound very faintly. Then you
will see the colorful LED (72) turn on with the light
of the ber optic tree (40) on with the colors of the
LED.
Circuits like this are used a lot in toys that light up
and make sounds when you press a button.