May 2022
Beginner
224 pages
7h 3m
English
Content preview from Making Simple Robots, 2nd Edition
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of the battery uncovered so the positive LED wires can touch the bare
metal.
• Bend the positive LED wires down until they’re almost touching the
positive side of the battery. This is your on-off switch (or pressure
sensor). The circuit closes when the positive wires touch the positive
side of the battery.
• Fold the frog back up. To test your circuit, press down on the back
of the frog. The eyes should light up. The positive LED wires should
touch the battery to close the circuit and light up the frog’s eyes
(Figure
Aa
)
. Let go, and the lights should turn off while the frog hops in
the air
(Figure
Bb
)
!
TROUBLESHOOTING TIPS
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