Page 282 - Lego Mindstorms

Robot 9 • The SpinnerBot

Spinner Arms Step 0

Locate the Right and Left Gripper
sub-assemblies built previously
and place them beside each other,
as shown.

Spinner Arms Step 1 As you attach the two
grippers using the yellow
plate, try to match the
positions of the grippers while the
16t gears mesh. There will always be a
slight difference in orientation (the
width of half a tooth, or 15
degrees), but if they are
far off, the grippers will not
close properly. Once you
attach the plate, you can test rolling them
open and closed in unison.

Spinner Arms Step 2

Locate the Gripper Drive
Shaft sub-assembly built
previously and attach it
as shown.

Make sure that the two 1x2 TECHNIC beams on the
shaft are as far apart as possible before you snap
them onto the 2x8 plate.

267