[catliNZ]

Well in that case
Edit the tx software file Process_IDx.ino about line 187
 

Code:

// calc the current wind direction wind_dir = ((vane_reading - Min_vane_reading) * 360L) / (Max_vane_reading - Min_vane_reading); wind_dir += WDir_offs; //addition to turn compass 180 degrees wind_dir += 180; if (wind_dir > 360) wind_dir -= 360; //end of addition // Precaution in case the calib values are wrong or slightly off if (wind_dir > 360) wind_dir = 360; else if (wind_dir < 0) wind_dir = 0; wind_dir = wind_dir * 10; return wind_dir; } #endif #endif // End ID2

the 180 of course can be changed to get your angle correct.
cheers, Ian