Integrating Solar Power
Students will create voltage regulator and construct a solar battery charger.
At this point students should have a working robotic sunflower that will track the sun with 2 degrees of freedom. This next lesson powers the whole system with a photovoltaic module. A Zener diode is used to charge a 6V motorcycle battery which then supplies a voltage regulator which in turn supplies the 5V needed by the microprocessor.