Petbot design in this problem, you will design circuits to control petbot, a simple robot designed to follow light. petbot measures light using photoresistors. a photoresistor is a light-sensitive resistor. as it is exposed to more light, its resistance decreases. given below is the circuit symbol for a photoresistor. below is the basic layout of the petbot. it has one motor on each wheel. we will model each motor as a 1 resistor. when motors have positive voltage across them, they drive forward; when they have negative voltage across them, they drive backward. at zero voltage across the motors, the petbot stops. the speed of the motor is directly proportional to the magnitude of the motor voltage. the light sensor is mounted the front of the robot 00 04 photo resistor motors (a) speed control- let us begin by first having petbot decrease its speed as it drives toward the flashlight. design a motor driver circuit that outputs a decreasing positive motor voltage as the petbot drives toward the flashlight. the motor voltage should be at least 5v far away from the flashlight. when far 1100a 11 1 (a) speed control