Greenwatts

Housing and Stepper Motor

Using a 4" cap first drill a small offset hole then a large centered hole. Glue the assembly made above onto the 4" cap as shown being careful to center it as closely as possible to the large hole.

Place the stepper motor in position and drill pilot holes for the stepper motor collar screws. Drill a pilot hole for the tensioner o-ring screw and install the o-ring screw. Place the o-ring around the bottom of the stepper motor and secure the stepper motor screws but only tighten them lightly. Make sure the stepper motor gear meshes with the main gear and stretch the o-ring tensioner over the o-ring screw. Make sure there is no binding by rotating the T-fitting 360 degrees. Once you have tested the rotation make a small cover from ABS for the exposed stepper motor gear head and glue it in place.

You can make a cover for the bottom of the cap housing and also drill small openings to feed the wires through. The power wires from the solar panel can be left exposed as they should already be weather proof.