Elenco Deluxe Snap Rover&reg - Manual (Page 28)

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Project #33 Switched Tone Blinker
Project #32
OBJECTIVE: To make cute sounds and flash lights.
Car Alarm
Build the circuit and turn on the slide swtich (S1).
Lights in the Rover body are blinking and a sound
like a car alarm is heard. Use the knobs on the
sound & recording IC (U9) to adjust the blink rate
and tone.
For more fun, add the 1K Ω resistor (R2) across the
points marked & using a single snap.
For yet more fun, add the white LED (D4) across the
points marked & using a single snap (the “+”
side of D4 goes to point ).
OBJECTIVE: To make cute sounds and flash lights.
Build the circuit and turn on the slide swtich (S1).
Lights in the Rover body are blinking and sound is
heard. Use the knobs on the sound & recording IC
(U9) to adjust the blink rate and tone. Prush the
press switch (S2) to change the frequency of the
tone.
R
O
VER REAR
B A
C
D
A B
C D
C
R
O
VER REAR