YS-S4 Multi-rotor Autopilot User Manual V1.4
7
5.
Connections
5.1
Assembly
IMPORTANT
a.
Ensure
the
original
factory
supplied
power
module
is
used.
The
manufacturer
holds
no
responsibility
if
the
S4
is
burnt
out
by
using
any
other
power
module.
b.
The
Power
supply
module
and
the
WI
‐
FI
module
must
connect
to
a
3S
‐
6S
LIPO
battery.
The
voltage
range
would
therefore
be
10.8V
‐
25.5V.
Normally
this
would
be
your
main
flight
battery.
c.
The
RC
receiver
(PPM
supported)
is
powered
directly
from
the
MC.
DO
NOT
power
the
receiver
with
any
additional
module
or
the
YS
‐
S4
unit
may
be
burnt
out.
d.
Motors
and
ESCs
(Especially
when
several
ESCs
are
together),
can
cause
serious
magnetic
interference
so
the
GPS
module
must
be
as
far
away
from
these
as
possible.
A
non
‐
ferric
bracket
must
be
used
with
the
arrow
on
the
GPS
facing
forward.
Also
the
battery
connection
carries
a
high
current
and
may
result
in
a
strong
magnetic
field.
Keep
the
battery
wires
as
far
away
as
possible
from
the
GPS
module
otherwise
your
aircraft
may
fly
in
circles!
e.
If
using
a
servo
gimbal,
make
sure
the
SERVOs
are
powered
separately.
f.
WHITE
core
wire
is
always
the
signal
line,
the
RED
core
wire
is
positive;
the
BLACK
core
wire
is
ground
(0v).
