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43
Project #117
Laser Gun with Limited
Shots
OBJECTIVE: To build a circuit with laser gun sounds and a
limited amount of shots.
Symphony of Sounds
OBJECTIVE: To combine sounds from the music, alarm, and
space war integrated circuits.
Build the circuit shown. Turn it on and press the press switch (S2)
several times and wave your hand over the photoresistor (RP) to hear
the full symphony of sounds that this circuit can create. Have fun!
When you press the press switch (S2), the alarm IC (U2) should start
sounding a very loud laser gun sound. The speaker (SP) will sound,
simulating a burst of laser energy. You can shoot long repeating laser
burst, or short zaps by tapping the trigger switch. But be careful, this
gun will run out of energy and you will have to wait for the energy pack
(C5) to recharge. This type of gun is more like a real life laser gun
because power would run out after a few shots due to energy drain. In
a real laser, the energy pack would have to be replaced. Here you only
have to wait a few seconds for recharge.
Project #118
Project #119 Symphony of Sounds (II)
The preceding circuit may be too loud, so replace the speaker
(SP) with the whistle chip (WC).
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