18
Project 101
Build the circuit shown
on the left. The circuit
uses the Alarm and
Space War ICs to ash
the LED (D1). Turn the
switch on and the LED
starts ashing.
Connecting the output of the Alarm
or Music ICs to multiple devices
(such as the LED, speaker and
lamp) enables these devices
operations to be synchronized.
Wet your ngers with some
water or saliva and touch them
across points A and B several
times to hear some space war
sounds. Push the press switch
(S2) to hear more sounds at
the same time.
This circuit uses your body to
conduct electricity, and turn on
the circuit.
Wetting your ngers improves
the connection between the
metal and your nger.
Two-Tone Twinkler
Turn the switch (S1) on and the lamp (L1) and LED (D1) start ashing.
You hear two different tones driving the LED and lamp. ICs can be
connected to control many different devices at the same time.
Project 100
Project 102
Touch & Go
Flashing Flare
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