MORE IO with Arduino

Link to presentation: https://docs.google.com/present/view?id=dxswkfj_98c445gwhr

This class contains the following modules:

• "Shift Out" - 74HC595 & Arduino
• "Shift In" - CD4021 & Arduino
• Lots of LEDs = LoL!
• I2C + Arduino Overview
• I2C IO Expander - MCP23017