Below we describe a step-by-step guide on how to assemble the robot.

To make it easier, we created a summary if you want to view the steps.

Summary

Castor Wheels Assembly

1) Place the 4mm metal balls inside the printed castor wheels, and use pliers to attach them to the cavity.

2) Press only one side of the cavity so that the metal ball is stuck, but can also rotate without difficulty.

3) Use a screwdriver to screw the two castor wheels onto chassis A.

4) After placing the wheels, adjust the height of the castor wheels so that the chassis is well balanced.

Wheel Assembly

1) Separate components for wheel assembly.

2) Use a hammer to fix the bearing on the wheel axle. If necessary, use a small file tool to remove artifacts from the 3D printing. Make it as flat as possible.

3) Attach the rubber oring to the wheel.

4) Insert the M3 screw with pressure washer as in the picture below.

5) Insert the 3D printed wheel shaft onto the M3 screw until it contacts the bearing. The wheel shaft must not be loose or too tight, as this can make the wheel difficult to turn.

6) Insert the two M3 nuts into chassis A as shown in the figure below. Use super glue if necessary.

7) Use a screwdriver to attach both wheels to chassis A. Leave it tight and check that both wheels are turning with minimal friction and that they cannot be out of level with the motor shaft. They cannot oscillate. Also adjust the height of the castor wheels so that the chassis does not wobble.

Continuous Servo Motor Adaptation

Motor Assembly