Elenco Deluxe Snap Rover&reg - Manual (Page 37)

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Project #50 2-to-1 Tone
Project #49
OBJECTIVE: To build a simple remote control vehicle.
Easy Rover
Build the circuit and connect the jumper wires as
shown. Turn on the remote control unit and extend
the antenna. Turn on the slide switch (S1) and use
the remote control levers to drive Rover around.
Press the left button on the remote control to light
the white LED (D4). You can use it to see ahead
when exploring in the dark.
OBJECTIVE: To change sounds on a remote control vehicle.
Build the circuit and connect the jumper wires as
shown. Turn on the remote control unit and the slide
switch (S1). Use the remote control levers to drive
Rover around and adjust the tone sounds using the
knobs on the sound & recording IC (U9).
Press the left button on the remote control to
change the “two-tone” sound into a single tone.
Press the right remote control button to change the
frequency of the tone.
If you move the end of the black jumper wire from
the 10K
Ω resistor (R4) to the point marked A, then
the right remote control button shuts off the sound.
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