2 Motors (1 for movement and 1 for possible add-ons)
2 Touch Sensors
Strong string to hang it on
Moves from one end of the string to another. When it gets there, the touch sensor hits the wall, (Or whatever is used to hang it) and it reverses directions.
Instructions are in Aerial.pdf.
Aerial.pdf is (c) 2000 The LEGO Group
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