Lay the cardboard / chipboard on a flat surface. We used a stick of glue to adhere the white card stock over the chipboard and then adhered the red parts on top. Make sure to add enough glue to the corners to prevent them from lifting.
Build paper standoffs
Cut 10mm x 50mm strip of cardboard / chipboard. Use an accordian fold, simple zigzag folds, make the fold about 7-8mm in width.
Next we'll need to and holes to our standoffs. Use the servos included M2 screws to carefully drill a hole on the folded chipboard.
Arm Servo Horn
We can use the included screws to attach the servo horn. Mark the two mounting holes by pressing into the cardboard.
Next, we'll cut another strip of chipboard / cardboard 10mm x 30mm long, accordion fold, and then super glue these stand off on the marked spot on the arm.
Allow the glue to dry before mounting the servo horn.
Cut out the box design and assemble the folds. The Circuit Playground Express mounts to the top of the box with four M3 x 6mm Screws and M3 brass male-female standoffs. The battery sits inside the box with the wires routing through the port on the side.
Circuit Playground Express
We used alligator clips to connect the pins but soldering would be fine. You can rout the wires for the CircuitPlayground Express through the center of the mounting holes for the Circuit playground Express.