Learning Objective: Arduino Analog \& Digital IO Problem: Build the circuit given below and write a program that achieves following functionality. Button is used for power on/off of the whole system. Potentiometer is used to control the speed of the DC motor and LED turns on when system is on otherwise stays off. Hints: There are 4 independent sub circuits. Program and verify that each sub circuit works independently. Use the Serial Monitor for verifying button and potentiometer circuit. Remember to scale the input on AO pin (range is 01023 ) to PWM output on pin 3 (range is 0255 ). For button functionality, refer to Lab 4, Section 2, Part 5 . Note we are using external pull down on pin 2 to avoid the floating pin