ME 120

• Laptop
• Sparkfun Inventor's kit
• Digital multimeter
• Miniature test clip adapters

• Be able to identify a voltage divider, and predict the output from a voltage divider circuit
• Be able to identify a voltage divider, and use a potentiometer to create a variable voltage when supplied with a fixed voltage relative to ground
• Be able to use the analog Input function to read a voltage with an Arduino
• Be able to use the Serial Monitor to receive input from an Arduino attached to your laptop computer
• Be able to create a voltage divider circuit to enable reading the photoresistor from the Sparkfun Inventor's Kit
• Be able to use a simple “if” statement to execute conditional code blocks in an Arduino sketch

• Voltage dividers and potentiometers: lecture slides
• “if” statements in Arduino: lecture slides
• Detailed notes on “if” structures

• Hands-on exercises with photoresistor and potentiometer (PDF)
• PDF: Arduino case study: potentiometer, photoresistor
• Excel case study on plotting a ramp function: pdf, excel example, Video Macintosh version(11:08), Video Windows version(11:08)

Homework 3 is due at the beginning of next class meeting (Lecture 7).