Elenco Snap Circuits Motion - Manual (Page 28)

Assemble the crawler using the assembly
instructions on pages 6 and 7, and build the circuit
shown here. Mount the smallest gear (1.0”) on the
geared motor (GM) with a rubber ring to keep it
from sliding out of position, place it on the crawler
frame, and connect it to the circuit using the red &
black jumper wires.
Turn on the slide switch (S1), and then use the
switcher (S6) to make the crawler go forward,
backward, or stop. You can follow the crawler
around the room or table carrying the base grid
while using S6 to control it. Be careful to follow it
closely so you don’t over-extend the jumper wires,
and to keep it from falling off the table. The crawler
does not turn.
Project 31 Crawler
Project 33
Modify the preceding circuit
to use a second battery
holder (B1), as shown. The
crawler is much faster now.
Project 32
Crawler with
Control Light
Modify the preceding circuit
to include the red/yellow
bicolor LED (D10), which
lights yellow when the
crawler is going forward, or
red with it goes backward.
High
Speed
Crawler
-27-
Rubber ring
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