The completed Avoider robot
All the Movit kits include a comprehensive instruction manual which should be followed closely during the construction process to ensure a successful conclusion!

The Avoider in kit form as removed from the box.
All the parts are clearly laid out in relevent groups and detailed in the comprehensive instruction manual accompanying the kit. Individual parts should not be removed until required and care should be taken to correctly identify tapping screws, machine screws and so on to avoid confusion during assembly. All traces of joiners (sprue) should be removed from all the parts.

Installing the cranks to the right and left panels

An M3x25 screw is inserted through the flat spur gear with the boss uppermost and a washer and spacer placed over the screw. this is repeated for both spur gears, one for each panel..

The spur gear unit is passed through each side panel after a little grease is applied to the spacer. The crank is placed over the screw and a lock nut applied using a Phillips screwdriver and socket. Care should be taken to ensure that the panels (clearly marked "L" and "R") are handed with the spur gears on the inside.

Left side panel showing spur gear correctly assembled and ready for the next step.

The remaining gear mechanisms are now installed. The remaining flat spur gears have pinions and come in a small and large size. Care should be taken to ensure that the right gears are placed in the correct position. The instruction manual includes a size checker and indicates the correct order in which to install the gears. Gear spindles should be greased before gears are installed.

The photograph on the right shows the small flat spur gear in place with the crown gear set aside to be installed next.

Left side panel showing small spur gear and crown gear in position.

The next step is to attach the motor base to the right and left panels, installing the remaining (large) flat spur gears at the same time. Once again, grease should be applied to the gear spindles.
The motor base is attached to the side panels as shown and secured with M3x10 screws and nuts held captive within the motor base.

The photograph on the right shows the motor base attached to the right hand panel with the appropriate spur gear in position.

Another view of the right side panel showing the motor base in position.

The left side panel is attached to the motor base in the same way. as can be seen in the photograph on the right, looking from the front of the Avoider robot. This view is from the underneath and clearly shows the gear arrangement.

The next stage is the attachment of the battery cradles, which come in two pieces. The right and left side panels have to be gently pulled apart a little to insert the bosses of the battery cradle. The locating holes can be seen clearly in the diagram in the instruction manual.

The photograph on the right shows the two battery cradles in position, shown from underneath the robot.

Once again, we can see the battery cradles in position, viewed from the top.

Having completed the main body of the Avoider robot, the next stage to consider is the assembly and attachment of the six legs. Avoider has 3 pairs of legs, of which the front and rear pairs are the same, with the middle pair having a central slot.

The first step is to attach the rubber feet to all the legs with M3.5x6 tapping screws. The screws should not be over-tightened or there could be the possibility of damaging the rubber feet

The photograph on the right shows a "side" of legs with rubber feet attached.

Each leg is attached to the body with an M3x16 screw, 3x6 spacer and M3 nut, commencing with the right and left rear legs.

The middle leg assembly has to be completed one side at a time. Each middle leg is located on the cog and lug below, over which is placed the curving rod panel and stopper, making sure that the small boss on the rod panel faces outside. The assembly is then firmly attached together from the outside with an M3x16 screw and nut.

Here we can clearly see the middle leg mechanism with the locating screw through the stopper, rod panel, middle leg and side panel. At this stage the rear legs have yet to be incorporated in the rocking mechanism (rod panel).