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This is a complete rebuild from v1.x, as you can see. This robot is much larger, and much more complex than v1.x was. I designed the decks using 3D CAD and had them cut by a friend on his CNC. I added a breadboard on the top deck for experimental cicuitry - it's got a DS1307 RTC, IMU, TCS34725 RGB Color sensor, TMP006 Heat sensor, four digit 7-segment display, and an 8x8 matrix display on it right now. All of these are I2C devices. I use a lot of I2C devices because Linux doesn't require root ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/w-a-l-t-e-r-v2-x