Elenco Snap Circuits Motion - Manual (Page 43)

Project 66 Too Much at Once?
The battery holders (B1) include a special fuse
which activates if the current is too high. Usually
this fuse will only activate when there is a short
circuit, but sustained high circuit currents can
sometimes activate it. If the conditions that
activated the fuse are removed, then the fuse
resets after a short time. This fuse is very
important, because it protects the batteries from
overheating if you accidentally make a short circuit.
This circuit has a lot of stuff happening at once -
maybe too much. If the circuit works for a while
and then suddenly shuts down, then the fuse in
the battery holder may have activated. Turn off
the circuit, wait a little while for the fuse to reset,
and then turn the circuit back on.
Mount the medium-small green gear on the geared motor, the
medium-large 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.
-42-
This complex circuit is pictured on the front of the Snap Circuits ® Motion box,
use that picture to help in building it.
Build the circuit as shown. Place the spout and ball on the air fountain (AF).
Place the medium-small green gear on the geared motor (GM). Mount the
medium-large 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.
Assemble the airplane using the instructions on page 5, install the light motor
(M7) into the front of it, build the circuit shown here, and connect the red & black
jumper wires to the light motor (red to “+”). Spread out the jumper wires and be
sure they will not interfere with the fan on the light motor, 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. If the color LED
(D8) is not flashing then tilt the circuit in different directions until it lights; set the
lever on the adjustable resistor (RV2) to adjust its brightness.
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. Snappy knows
what is happening. Alternately, you can remove the air fountain from the circuit,
then everything else will work continuously.
! WARNING:
Moving parts. Do
not touch the fan
during operation.
Place the spout
on top of the air
fountain and
the ball in the
air flow.
Spout
SCM-165_Manual_061114.qxp_Layout 1 7/7/14 11:29 AM Page 43