Elenco Deluxe Snap Rover&reg - Manual (Page 27)

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Project #28
OBJECTIVE: To make a flashing circuit.
Super Blinker
OBJECTIVE: To make a flashing circuit
with sounds.
Noisy Flasher Project #30
Build the circuit and connect the
jumper wires as shown. Turn on
the right slide switch (S1) to
flash lights and make sound.
Use the knobs on the sound &
recording IC (U9) to adjust the
blink rate and tone. You can
shut off the sound by turning on
the left slide switch.
You can change the sound by
replacing the 100
Ω resistor
(R1) with the 10K Ω resistor
(R4).
Project #29
Goofy Blinker
OBJECTIVE: To make a flashing
circuit with weird sounds.
Remove the 10K Ω resistor (R4) and
replace the 100 μ F capacitor (C4N)
with the 100 Ω resistor (R1). Now the
LED is brighter and the sound is a
simple tone.
B A
+
C
+
Build the circuit and connect
the jumper wires as shown.
The white LED (D4) flashes
and tones are heard. Adjust
the knobs on the sound &
recording IC (U9) to change
the sound.
You can replace the 10K Ω
resistor (R4) with one of the
colored jumper wires or
another resistor for different
sounds.
R
O
VER REAR
Add the 1 μ F capacitor (C7) between
the points marked & . This creates
some unusual sound effects.
To change the sound again, add the
10K
Ω resistor (R4) between the
points marked & using the red
and black jumper wires.
A B
B C
Project #31
Simple Flasher
OBJECTIVE: To make a flashing
circuit with simple sounds.
R
O
VER REAR