Serial.parseFloat() returns the first valid floating point number from the Serial buffer.
parseFloat() is terminated by the first character that is not a floating point number. The function terminates if it times out (see Serial.setTimeout()).
Serial.parseFloat() inherits from the Stream utility class.
Serial: serial port object. See the list of available serial ports for each board on the Serial main page.
lookahead: the mode used to look ahead in the stream for a floating point number. Allowed data types:
SKIP_ALL: all characters other than a minus sign, decimal point, or digits are ignored when scanning the stream for a floating point number. This is the default mode.
SKIP_NONE: Nothing is skipped, and the stream is not touched unless the first waiting character is valid.
SKIP_WHITESPACE: Only tabs, spaces, line feeds, and carriage returns are skipped.
ignore: used to skip the indicated char in the search. Used for example to skip thousands divider. Allowed data types: