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Project #428
OBJECTIVE: To record the sound from the alarm IC.
The circuit records the sound from the alarm IC (U2) into the recording
IC (U6). Turn on the switch (S1). The first beep indicates that the IC
has begun recording. When you hear two beeps, the recording has
stopped. Turn off the switch (S1) and press the switch (S2). You will
hear the recording of the alarm IC before each song is played.
Alarm Recorder
Project #429 Project #430
OBJECTIVE: Record the sound from the alarm IC.
Alarm Recorder (II)
OBJECTIVE: To record the sound of a machine gun.
Machine Gun Recorder
Use the circuit in project 428. Remove the 2-snap from A1 to B1. Turn
on the switch (S1). The first beep indicates that the IC (U6) has begun
recording. When you hear two beeps, turn off the switch (S1), press the
switch (S2), and the new recording plays.
Use the circuit in project 428. Move the 2-snap from A1 - B1 to 3A - 3B.
Turn on the switch (S1). The first beep indicates that the IC (U6) has
begun recording. When you hear two beeps, turn off the switch (S1),
press the switch (S2), and the machine gun sound plays.
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