Robot 9 • The SpinnerBot
Lower Arm Drive Step 1
Lower Arm Drive Step 2
Lower Arm Drive Step 3
Slip a blue rubber band
over the pulley piece. You
will attach it to the arm
motor later, in Final
Step 16.
Place this
part off to
the side. You
will need it
later on in
Lower Arm
Drive Step 6.
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