Elenco Snap Circuits SOUND &reg - Manual (Page 71)

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Project 147 Color Keyboard (V) Project 148
Color Keyboard
(VI)
Project 149 Adjustable Voice Changer & Light
Project 150
Adjustable
Voice
Changer &
Light (II)
Use the preceding
circuit, but swap the
locations of the speaker
(SP2) and color LED
(D8). Now the color
LED is at full brightness
during playback, and
RV adjusts the sound
volume.
Set the 500k W adjustable resistor (RV3) to mid-
range. Turn on both slide switches (S1), you hear
a beep signaling that you may begin recording.
Talk into the microphone until you hear a beep
(signaling that recording time is over), then turn
off the left slide switch to exit recording mode.
Push the press switch (S2) to play back the
recording, and turn the knob on RV3 to change
the playback speed. You can play your recording
faster or slower by changing the setting on RV3.
Move the lever on the adjustable resistor (RV) to
change the brightness of the color LED (LED)
during playback. Most of RV’s range will give little
or no LED brightness.
Recording time is 6 seconds at normal speed, but
this can be changed depending on the setting of
RV3 when you are making the recording.
Use the preceding circuit, but replace the
1
m F capacitor (C7) with the 0.1 m F capacitor
(C2). The sound is a little different now, and
the green keys can change it.
Turn on the slide switch (S1).
Move the lever on the
adjustable resistor (RV) around
near the left (not the middle or
right). Press any of the blue
keys for more effects. Pressing
the green keys may not do
anything.