Elenco Snap Circuits Motion - Manual (Page 24)

Assemble the circuit and place the base grid into the blue stand (with
the slide switch (S1) closest to the stand) and carefully stand it up.
Position it near the edge of a table, facing across a room.
Turn on the slide switch (S1). An alarm sounds for a few seconds on
start-up, and then whenever the circuit detects motion in the room.
This circuit will work in the dark, but be careful not to hurt yourself
moving around a room in the dark.
Variant A: Add a connection between the points marked B & C using
a 1-snap and a 2-snap. Now it sounds like a machine gun.
Variant B: Remove the connection between B & C, and add a
connection between A & B. Now it sounds like a fire engine.
Variant C: Remove the connection between A & B, and add a
connection between A & D. Now it sounds like a European siren.
Project 19 Motion Detector Alarms
Assemble the circuit and mount the merry-go-round base on the geared
motor (GM) shaft. Place cardboard figures on the merry-go-round if
desired.
Turn on the slide switch (S1). The merry-go-round spins for a few
seconds on start-up, and then whenever the circuit detects motion in
the room.
Project 20 Merry-Go-Round
Motion Detector
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