Data Sheet

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72. Nerves & Muscles
Build the circuit as shown above and turn on the switch (62). Then move the hook that is connected in the 5-wire (5)
through the metal of the maze (37). When the metal of the maze (37) is touched by the hook, you will light up the bi-
directional LED (71) and the alarm (78) will sound. It’s not as easy as it looks! It is actually normal for your hands to shake
slightly as the nerves and muscles switch continuously between states of relaxation and contraction, so keeping your
hands in a relaxed state all the way through the maze (37) is challenging. Especially when you know the alarm (78) will
sound if you slip!
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