Fabrication

Consulting with mentors and through hands-on experimentation, the key component, the coupler between the motor and the flower assembly, was designed and tested. Through extensive brainstorm and prototyping, an off-the-shelf metal clamp was identified as suitable to mount the motor with minimum extra modification. Connections between motor and solar cell leads were soldered to enhance the durability. Base and rod connections required longer screws, which necessitated pre-drilled holes. Then, teaming up with engineering students at a local community college, the first 25 units were constructed.

Most of parts were homemade at low cost. The basic tools used were electric drills, wood sanders, and hand tools, such as hacksaws, plyers, soldering irons, etc. The solar cells and the motor are purchased at SolarWorld.com. They are rugged and robust enough to sustain the load for age appropriate construction.