Moved some stuff around and re-routed the logic converter chip

Voltage level shifter adafruit Removed Sparkfun voltage level shifter and replaced with adafruit's

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Merge pull request #2 from UserWL/CAN-bus-support Added CAN bus chip (MCP2551)

Added DB9 and terminal block connectors

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Added CAN bus chip (MCP2551)

Added code to test UART communication

Removed old sch and added newer version

Fixed pull-up resistors on I2C bus