❹
TREASURE HUNT
Plug the Logiblocs together as for the Light Detector unit (page 15). Remove
the NOT. Hide the Logiblocs behind things in a dark room. Do not cover
the lens of the LIGHT SWITCH and make sure that the flashlight will trigger
the Logiblocs when it is shone directly at the hidden LIGHT SWITCH.
Take it in turns to hide the Logiblocs in ever more clever places. Hide the
Logiblocs in secret places and see the hidden treasure revealed with the
shine of your flashlight!
➎
LOGIBUZZER
We can use another type of feedback loop to
make a Logibuzzer.
Put the blocks together as shown.
Connect the Jack Plug wires to the
terminals of the OUT block. Plug the
Jack Plug into the IN. If there is enough
light shining onto the LIGHT SWITCH
the blocks will buzz.
Now cover the lens of the LIGHT
SWITCH with a loose Logibloc
and the buzzing will stop. If any-
one takes the loose block away
the alarm will sound again.
What happens if
you swap the AND block
with the OR block?
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