Solar energy is high on the agenda for most governments and instrumentalities. As the price of photovoltaic cells drops, the more the sun will be seen as the energy source of choice. In the mean-time solar generated electricity is powering lighting, radio links and security in areas not served by the utility companies. The FK10XX is an easily implemented and understood deries of solar powered devices. The principles experienced with these projects will serve the student well in discovering the adaptability of solar energy. These units are available also as pre assemblies under the FA prefix.