PV module’s current and voltage can be measured using current and voltage sensors. After defining the voltage and current variables, they need amplification or attenuation and filtering to make noiseless and precise measurement. The current measurement section of the circuit translates the current received from the PV module into a small voltage form which will be applied to the analogue to digital converter (ADC) of the microcontroller. This stage consists of a Hall-effect current sensor, amplification, and filter circuits. Hall-effect sensor, LA25-NP [36], exhibits good linearity and is temperature compensated. It also shows high grade performances in terms of accuracy and immunity to noise. Compensated Hall-effect contactless current devices are obtainable for measurements in the range betweenmA to kAwith 0.1% precision [37].