Elenco Snap Circuits Motion - Manual (Page 23)

Assemble the circuit and place the base grid into the blue stand (with
the NPN transistor (Q2) 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). The color LED (D8) lights 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.
Project 17 Motion Detector Light
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). The color LED (D8) lights for a few seconds
on start-up, and then whenever the circuit detects motion in the room.
The color LED will not be as bright as it
was in the preceding circuit, because this
circuit does not have the NPN transistor
(Q2) as an amplifier. This circuit uses less
electricity than projects 14 & 17, so your
batteries will last longer.
Project 18 Low Power
Motion Detector
-22-
Mount circuit on the blue stand and face across a room.
Mount circuit on the blue stand and face across a room.
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