Elenco Snap Circuits Motion - Manual (Page 41)

Project 62 Big Circuit
Build the circuit as shown. Place the spout and ball
on the air fountain (AF). Place one of the green
gears on the geared motor (GM). Mount a matching
green gear on the “+” shaped bar with a rubber ring
to keep it in position, place the bar in the pivot stand,
and adjust the position of the green gear on it to
interlock with the gear on the geared motor. Place a
colored disc or some of the figures on the merry-go-
round base and mount the base on the “+” shaped
bar. Be sure that the red & black jumper wires will
not touch the fan on the light motor (M7), the gears,
or the merry-go-round.
Turn on the slide switch (S1) and watch the show!
The air fountain will propel the ball into the air but it
may be unstable and fall off quickly. Set the lever on
the adjustable resistor (RV2) to the left and tap on
the vibration switch (S4) to make the color LED (D8)
flash. The tilt switch (S7) is used here as a 1-snap,
and won’t activate anything.
NOTE: this circuit may work for a while and then
suddenly shut down. If so, turn off the slide switch,
wait a little while, and then turn it back on. See
Snappy’s comments in project 66 for an explanation.
!
WARNING: Moving parts. Do not
touch the fan during operation.
+
Mount a green gear on the geared
motor, a matching gear and the on
the “+” shaped bar, place the bar in
the pivot stand and align the gears,
place a colored disc or figures on
the merry-go-round base and
mount it on the “+” bar. If gear
slides down shaft during use then
add a rubber ring to keep it in
place.
Build the circuit as shown and turn
on the slide switch (S1). The
red/yellow bicolor LED (D10)
should be on. Tap on the vibration
switch (S4) or bang on the table to
make the LED blink (indicating
that it is turning off briefly).
The adjustable resistor (RV2) is
used here as a fixed resistor, so
moving its lever won’t do anything.
Project 63 Vib Off
-40-
The vibration switch (S4) is connected so it bypasses the
red/yellow bicolor LED (D10), so whenever vibrations turn
on the switch, the LED turns off. However the vibrations
occur so fast, turning off the LED so briefly that normally
your eyes wouldn’t even notice. The 1mF capacitor (C7) is
used here to slow things down, so the LED does not
immediately come back on after the vibration switch turned
it off. If you remove C7, then you probably won’t notice
vibrations shutting off the LED (try it).
Place the spout
on top of the air
fountain and
the ball in the
air flow.
Spout
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