46
INVENT A
THROWING
ARM
START BY BUILDING A LAUNCHER THAT FLINGS
PROJECTILES WITH A SERVO AT THE PRESS OF A BUTTON.
Set up a tower of cups and try to knock them over. Then
modify your launcher to make it even more accurate,
powerful, or speedy. Challenge your friends to see
who can knock over the most cups.
1
HOUR
(MINIMUM)
a1 battery & cable
screws (×3) a9 mounting board
•Phillips head
screwdriver
•scissors
• rubber band
•paper cups
• masking tape
(not included)
p1 po w e r
o11 se r v o
& servo hubi3 button
a23 mechanical arm
a24 servo mount
TIME LEVEL
BITS
TM
+ MATERIALS
CHALLENGE 03
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