Board version 0.3 prototypes

[Johannes Taelman]

The firmware for version 0.5 became default in the git repository. If you pull updates from git and have a version 3 prototype, you have to change firmware/axoloti_defines.h
//#define BOARD_AXOLOTI_V03 1
#define BOARD_AXOLOTI_V05 1

into
#define BOARD_AXOLOTI_V03 1
//#define BOARD_AXOLOTI_V05 1

before compiling and flashing firmware...

This version number is printed on the bottom side of the board near the line out plug.

When flashed with the wrong board revision, your computer will see a serial port, but cannot connect.