LED OUTPUTS
bottom line. there was some issues with the previous breadboard. I was able to get the centipede sheild sketch to work ( although I think only 15 of the 16 led's work thus far). No pull up resistors on either SCL or SDA are used in this wiring. MCP23017 Pins 10 and 18 going to +5v. More detail later. Thanks all!
Stay tuned.