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SECURITY MAT
You will need some aluminium foil, scissors, paper glue, some cardboard
and some sticky tape. You can use the piece of card provided but you may
prefer to keep this for use as an attractive mouse mat !
Step 1
Cut out two pieces of card or cardboard 20cm x 15cm.
Stick two pieces of aluminium foil to one side of each
piece of card. Cut out four strips of cardboard
to go right around the edge of
one piece of card.
Step 3
Join the blocks together as shown for the Door Alarm and plug in the Jack
Plug. Tap the sandwich you have made. When the two pieces of foil touch,
the circuit is completed and the Logiblocs should be triggered. If the
aluminium foil sheets in the sandwich are touching too easily then add
another spacer or two. When you are happy with the sandwich, stick down
the top piece of cardboard to the spacers.
Hide the Logiblocs and place the mat under carpets and surprise your
friends when they step in the wrong place ! Remember to disconnect
the BATTERY BOX when you are not using the Logiblocs to save the
batteries !
15
Step 2
Stick one of the wires to the corner of
the foil with sticky tape. Glue the strips
of cardboard around the edge to form a
spacer. Stick the other wire to the
corner of the foil on the other card.
Place (do not stick) the second card
on top of the spacer to make
a sandwich.
