Elenco Snap Circuits SOUND &reg - Manual (Page 24)

Project 7 Voice Changer
Placement Level
Numbers
+
Project 9 Color Light
+
LEDs (Light Emitting Diodes)
convert electrical energy into light;
the color of the light emitted
depends on the characteristics of
the material used in them.
The color LED actually contains
separate red, green, and blue
lights, with a micro-circuit
controlling them.
Project 8
Voice Changer & Light
Build the circuit as shown. Turn on the slide switch
(S1), and enjoy the light show from the color LED
(D8). For best effects, place the egg LED attachment
on the color LED, and dim the room lights.
Use the preceding circuit, but replace the
3-snap wire that is next to the speaker
(SP2) with the color LED (D8, “+” to the
left). Now when you press S2 to play the
recording, the sound will not be as sound,
but the color LED will be flashing.
Build the circuit shown on the left by placing all the parts with a black
1 next to them on the board first. Then, assemble parts marked with
a 2. Then, assemble the part marked with a 3. Install two (2) “AA”
batteries (not included) into each of the battery holders (B1) if you
have not done so already. Be sure to install the microphone (X1)
with its “+” side positioned as shown.
Set the 500k W adjustable resistor (RV3) to mid-range, turn OFF the
left slide switch (S1), and then turn on the right slide switch. Now
turn on the left slide switch, 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.
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.
Egg LED
Attachment
-23-