====== Using minicom on Linux ======

  - Run ''minicom -D [device]''; for ExtFriend, the device will typically be ''/dev/ttyACM0''.
  - Press Ctrl+A, then O, then select ''Serial port setup'':
    * Set ''Bps/Par/Bits'' to the correct speed, then press Q to set 8N1.
    * Set ''Hardware'' and ''Software Flow Control'' to ''No''.

===== Uploading data =====

  - Press Ctrl+A, then S, then select ''xmodem''.

===== Downloading data =====

  - Press Ctrl+A, then R, then select ''xmodem''.