Wiring
layout
Since
the
CRSF
protocol
is
serial,
it
has
to
be
connected
to
a
free
serial/UART
port
on
the
flight
controller.
On
the
COLIBRI
RACE
it
must
be
UART3.
If
you
use
the
POWERCUBE
with
FPVision,
you
can
use
also
use
UART2.
The
pin-out
and
wiring
layout
shown
in
the
following
table
and
on
the
included
diagram.
CROSSFIRE
MICRO
V1
RX
CROSSFIRE
MICRO
V2
RX
CROSSFIRE
DIVERSITY
RX
Clean-/BetaFlight
Serial
port
(COLIBRI
or
other)
Ch./Pin
1
TX
Ch./Pin
1
TX,
5V,
GND
Ch./Pin
8
TX,
5V,
GND
⇒
UART2
or
3
RX,
5V,
GND
Not
available
Ch./Pin
2
RX
only
Ch./Pin
7
RX
only
⇐
UART2
or
3
TX
In
addition
to
the
CRSF
serial
connection,
you
might
want
to
connect
BST
(BlackSheep
Telemetry)
between
the
CROSSFIRE
RX
and
COLIBRI
to
provide
more
telemetry
and
make
changes
remotely
on
the
CORE
PRO
(if
connected)
or
FPVision
(if
part
of
the
POWERCUBE).
CROSSFIRE
RX
BST
⇒
CORE
PRO
BST
⇒
POWERCUBE
standard
INT.
COLIBRI
FC
CROSSFIRE
RX
BST
⇒
BST
⇒
POWERCUBE
FPVision
INT.
COLIBRI
FC
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