In this lesson we learn to use measure DC voltage using AnalogRead feature of Arduino. First Analog and Digital is mentioned, then we learn about the 10bits and 12bits Digital to Analog Converter DAC. Then Variable resistor or potentiometer is explained, resistance is measured using multimeter, then we learn to read the knob voltage in basic method and in 4 more methods with learn the code and reading proper voltage and not 0 to 1023.
