replace pandas append with concat
/daq_board/daq_board.py:456: FutureWarning: The frame.append method is deprecated and will be removed from pandas in a future version. Use pandas.concat instead.
df = df.append(df_last, ignore_index=True)
Just using concat somehow breaks the HDF5 file hat is saved, but not always, apparently only when running multiple boards in parallel
Edited by Ettore Zaffaroni