Page 296 - LEGO MINDSTORMS - Robotics Invention System-2 Projects
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Robot 9 • The SpinnerBot
Final Step 16
Attach the Arm Drive sub-assembly as
shown. The dangling black half-beam should
be aligned with the two protruding pins
further down on the body of the
SpinnerBot. Once the Arm Drive is seated,
this half-beam has to be snapped onto the
pins, securing the entire column in place.
Take the blue rubber band that is
loosely attached to the Lower Arm
Drive’s shaft, and slip it securely around the
groove of the small pulley on the shaft.
Once it is in place, stretch the band around
the larger pulley on the arm motor. The
band be lined up vertically, and it should
fit snugly without crossing over itself.
Insert pins here
Final Step 17
Looking at the
left side of the Arm
Drive, connect the
two liftarms to the side of the
motor housing using the axle pins. This
will prevent the housing from coming
loose under strain.
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