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How to Make a Lego NASA Rover

NASA's Mars exploration rovers, Spirit and Opportunity, traverse the Red Planet's surface, exploring and gathering geological data. These highly capable little vehicles feature solar panels for energy, nine different cameras, and a flexible robotic arm that can grind, analyze and take images of nearby rocks. With a good stock of Legos and some imagination, you can construct a model Mars rover with movable cameras, arrays, antennas and an instrument arm.

Instructions

  1. Chassis

    • 1

      Place three 1 by 4 plates with wheel holders onto a 2 by 8 plate, with the 1 by 4 plates at stud rows one, five, and eight (counting from front to back of rover). Add the wheels.

    • 2

      Fill the gaps between the wheel-holding plates with a 2 by 3 plate and a 2 by 2 plate, and cover the wheeled assembly with a 2 by 8 plate across the middle of rows one through eight.

    • 3

      Put a 1 by 3 plate with a holder bar in the middle of row 1. Add 1 by 1 round plates at both ends of row one, and cover row one with a 1 by 4 brick. Build up the rear of the chassis with a 2 by 3 brick and a 2 by 4 brick, placed over stud rows two through eight.

    • 4

      Cover rows two through eight with two 4 by 4 plates. One of the 4 by 4 plates will hang one row out over the rear of the chassis.

    Pancam/Navcam

    • 5

      Place two 1 by 1 round, gray plates onto the white 1 by 2 plate that has a holder bar on one side.

    • 6

      Insert the technic axle through the 1 by 2 brick with a pin holder and pull until the stop is flush with the brick. Add two 1 by 2 curved-top bricks to the 1 by 2 brick with a pin holder, placing the plate portion of the curved bricks onto the studs of the pin-holding brick, securing axle into place. Add two 1 by 1 round, gray plates to the open end of the pin-holding brick.

    • 7

      Join these two assemblies by placing the white 1 by 2 plate onto the plate portion of the 1 by 2 curved bricks.

    • 8

      Insert an axle into a 2 by 2 round brick and place the round brick onto a 2 by 2 plate.

    Arrays

    • 9

      Arrange a 2 by 3 plate without a corner, two 2 by 3 plates and another 2 by 3 plate without a corner so that the pieces form a regular trapezoid with dimensions of 8 by 3 by 6 studs, providing an array of 3 by 6 studs. Secure the plates with two 1 by 6 plates along the outer rows of six studs.

    • 10

      Snap a 1 by 9 bent lift arm onto the 1 by 6 plate on the narrow edge of the trapezoid. This completes one array. Repeat this to create a mirror image of the previous array.

    • 11

      Arrange the arrays side by side, with the long ends of the trapezoids parallel and the free ends of the lift arms touching. Join the two arrays by snapping a dark gray 1 by 2 plate with a handle under the free ends of the lift arms, tucking the corners of the 1 by 2 plate between the lift arms and the array corners.

    Instrument Deployment Device

    • 12

      Snap a 1 by 2 plate with horizontal clips onto the thin section of a 2 by 2 brick/plate with a wheel holder.

    • 13

      Mount an axle connector on the wheel holder, insert a pin into the axle holder and join a second axle holder to the first to form the instrument deployment device.

    • 14

      Insert a bar into the free axle connector.

    • 15

      Place an axle connector at the free end of the rod and slide a pin into the free end of the axle connector.

    High-Gain Antenna

    • 16

      Snap a gray 1 by 2 plate with a holder bar onto a 2 by 2 plate so that bar hangs free toward the rear.

    • 17

      Place a 1 by 2 curved brick onto a left stud or holder bar plate with the thin part of the brick on top of a 1 by 2 plate. Lower the end of the brick flush with the bottom of the 2 by 2 plate.

    • 18

      Snap a 1 by 2 plate with an arm onto a 1 by 2 plate with a clip, with the arm extending to the right.

    • 19

      Slide a dish onto the arm and clip the dish assembly to the holder bar.

    Final Assembly

    • 20

      Place the pancam/navcam onto the chassis in the middle of rows two and three. Place a lever on a middle stud in row four.

    • 21

      Snap the arrays, lift arm sides down, to the middle of row one, deploying the arrays as necessary to fit around the cam tower.

    • 22

      Mount a 4.5 cm antenna to the chassis at the rear (rows eight and nine) on the right side.

    • 23

      Mount the high-gain antenna to the chassis in rows six and seven on the left side.

    • 24

      Snap the instrument deployment device to the holding rod at the lower front of the chassis.


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