Project 9
Motion & Tilt Sensor
Turn on the slide switch (S1). There will be light if the circuit is moved or tilted in some
directions. In some cases the circuit may detect tilt even if laying on a flat surface; tilt
if slightly to make it turn off.
Next, remove the color LED and place it across the points marked A & B (“+” to point
A). Now the color LED activates when the circuit is tilted in different directions.
Next, replace the color LED with the horn (W1). The circuit works the same, except
makes sound instead of light.
Note that the actual tilt switch component may be mounted inside its case, and may
not be visible from the outside.
Place the circuit on a level surface
and turn on the switch (S1). There
will be light if the circuit is tilted or
moved. As a variant, try replacing the
color LED (D8) with the horn (W1);
you hear buzzing when tilt is
detected.
If the circuit does not shut off when
left alone, then try tilting it slightly so
it turns off.
Project 11
Motion & Tilt Light
Place the circuit on a level
surface and turn on the
switch (S1). There will be
light or sound if the circuit is
tlited or moved. As a variant,
try swapping the locations of
the color LED (D8) and horn
(W1).
If the circuit does not shut off
when left alone, then tilt it
slightly so it turns off.
Project 10
Super Motion & Tilt Sensor
Turn on the slide switch (S1). Place the base grid into the blue stand, oriented so that
there is no sound (usuaully this will be with the 2-snap wire or the battery holder closest
to the stand). Position it near the edge of a table, facing across a room.
The color LED (D8) lights whenever the circuit detects motion in the room. The horn (W1)
makes noise if the circuit is moved or tilted in some directions.
Project 12
Motion Detector with Touch Alarm
The tilt switch (S7) has a
rolling ball sensor mounted
inside and can detect tilt,
vibration, or acceleration.
It is more difficult to get this circuit
to turn off than it was for project 10,
because in project 10 the color
LED and horn indicate different
directions of tilt.
This circuit could be used
as a security system. It
lights if it detects someone
moving across the room,
and sounds an alarm if
someone tries to move the
circuit out of their path.
SCP-13_022014.qxp_SCP-13 Instructions 3/7/14 10:46 AM Page 3
