3.1.1 Control Unit: ATMega328 microcontroller on arduino platform
ATMega328 microcontroller on arduino platform was selected the control unit of the microcontroller. Arduino Uno was selected from the expansive arduino family. Arduino Uno has a total of 20 inputs pins of which 14 are digital and 6 are analog inputs. [5] The digital pins can be used as either inputs or outputs and also 6 of the 14 pins can be utilized as PMW. The board has a 16 MHz ceramic resonator, a USB connection and a power jack.
Figure 3.1