What is Smart Alternating Power Supply System The main objective of the Smart Alternating Power Supply System is to explain the uninterrupted power supply to a load, by selecting the supply from different sources such as mains, solar, inverter, and generator automatically in the absence of any of the sources. The huge demand for electricity is increasing every day and frequent power cuts are causing many problems in various areas like industries, hospitals, and houses. A Smart Alternating Power Supply System arrangement for a power source is a must. This arrangement can be designed by using ARDUINO and relays. When a source, say mains fail the supply automatically shifts to the next priority source solar. When a source, says solar fails the supply automatically shifts to the next priority source generator and so on. Use of ARDUINO based automatic power source change over reduces the operations time and reduces manpower. The use of ARDUINO results in faster operation and accurate...