Monday: Figure out how to attach the spring system, trigger and pendulum. CAD parts that need to be laser cut.
Tuesday: Laser/machine cut parts. Assemble individual parts. Start wiring Arduino and motors. Edit CAD for trigger (increase radius to increase spring’s compressed length).
Thursday: Attach the trigger and spring system inside the ball. Test runs. Connect to blue tooth.
Issues: 1) Balsa is too weak for a spring base. 2) Spring support rods are too short they get stuck to the edge of the bottom cylinders as springs compress.
Solutions: 1) Use acrylic spring base. 2) Elongate the bottom cylinders so that the rods are already inside the cylinder when uncompressed.