Page 217 - LEGO MINDSTORMS - Robotics Invention System-2 Projects
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Robot 7 • The LEGO Safe
Door Step 0
Add framing to the door.
Door Step 1
Add the track
system. Push the 1x5
plate with holes firmly into
the back of the door. The door will
move up and down on the track when
the motor turns the gear.
203
