Elenco Deluxe Snap Rover&reg - Manual (Page 19)

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Project #12 Remote Sound Switcher
Project #11
OBJECTIVE: To make sound for a while.
Remote Sound
Build the circuit with the base grid centered on the
Rover body, and connect the jumper wires as shown.
TURN THE KNOBS on U9 TO THE RIGHT setting. Turn
on the slide switch (S1).
Turn on the remote control unit and extend the antenna.
Push the right button on the remote control; a tone is
heard for a few seconds and then shuts off. You can
adjust how long the tone plays for by turning the upper
U9 knob a little to the left. You can adjust the pitch of the
tone by turning the lower knob on U9 a little to the left.
You can use the right remote control lever to move
Rover in a circle, but the left wheels will not work.
If the upper U9 knob is set too far to the left then the
sound will seem to stay on forever. If the lower U9 knob
is set too far to the left then you may not hear any
sound.
C
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+
R
O
VER REAR
Turn knobs
to the LEFT
setting.
C
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co
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it.
Build the circuit with the base grid centered
on the Rover body, and connect the jumper
wires as shown. Turn on the remote control
unit and extend the antenna. Turn on the
slide switch (S1), you will hear a tone (a
recording may play first). Turn the lower
knob on U9 to the right for the best effects.
Push the left button on the remote control to
change the sound. If the lower knob on U9
is set to the right then the pitch of the tone
will change, otherwise the tone shut off.
Replace the 10K resistor (R4) with any of
the other resistors (R1, R2, or R5) or
replace the 1
μ F capacitor (C7) with the
100 μ F capacitor (C4N) and see how the
sound changes.
OBJECTIVE: To change sounds by remote control.
Turn knobs
to the LEFT
setting.
R
O
VER REAR