ME414/514 Homework 4 Due 4-20-2009 Midterm Review Background: This homework assignment will be done individually and will provide some review for the midterm on the 20th. Homework Tasks: 1. Graph a voltage vs degree graph for a 300 degree 10K potentiometer. VCC is 4.3 volts. 2. Graph a digital value vs voltage graph for a 8 bit ADC. The formula below is for 10 bits. Vref is VCC. Calculate the resolution of each digital step. 3. Refer to the lab 3 code for this question: Sketch the TCNT2 value when the OCR2A register is set to 100. The period of the counter is 8 microseconds. When TCNT2 and OCR2A are equal an interrupt is executed below. How often is this interrupt called? How long does it take for MotorPWMValue to cycle from 0 to 255? Sketch the output of PORTD2 being applied to motor two enable if MotorTwoSpeed = 100.