7.
External
sensors
You
may
connect
any
I2C
sensor
to
the
32U4_SE
that
is
supported
by
the
software.
But
as
GYRO,
ACC,
MAG
and
BARO
were
present
on
the
32U4_SE
the
only
addition
might
be
an
external
I2C
GPS
‐
module.
ATTENTION:
The
external
I2C
bus
of
the
32U4_SE
may
only
be
used
with
3.3V
sensors!
#define A32U4ALLPINS
To
make
use
of
the
full
potential
of
the
32U4_SE
you
need
to
uncomment
the
'#define
A32U4ALLPINS'.
