5
. Basic Troubleshooting (Q&A)
Q
:
My moonlan
d
er
d
oes not start up
,
or sto
p
s hashing a
f
ter a while
While
its
normal
for
the
ASIC
to
stop
working
randomly
after
extended
periods
of
time,
you
should
have
no
issues
running
them
for
days.
If
you
see
that
you
have
to
restart
them
ever
few
hours
or
sooner,
or
it
does
not
start
hashing
at
all
on
startup
its
most
likely
because
of
two
main
reasons:
1)
Your
hub/USB
port
is
not
providing
enough
power
for
the
given
frequency/voltage.
Try
lower-
ing
your
frequency
and
core
voltage
so
less
power
is
drawn,
or
use
a
port/hub
that
can
provide
at
least
2A
of
continues
current.
2)
You
have
set
your
memory
voltage
too
low.
While
lowering
memory
voltage
can
reduce
pow-
er
draw,
it
also
can
increase
instability
in
the
device
which
will
cause
it
to
need
to
be
restarted
often.
Trying
increasing
memory
voltage
to
.9v
for
best
reliability.
Q
:
Why
does my X hub not work with my Moonlanders?
Most
USB
2.0
and
a
lot
of
3.0
powered
USB
hubs
will
NOT
work
with
these
sticks.
Powered
USB
hubs
need
to
meet
two
requirements
to
reliably
support
the
high
current
these
sticks
draw.
First
they
need
to
have
a
clean
high
quality
power
supply
that
can
output
at
least
1A
PER
port.
To
run
the
sticks
at
full
speed
you
need
at
least
2A
per
port.
Second
they
need
to
comply
with
USB
standards
which
ALOT
of
cheap
HUBs
don’t...which
causes
a
lot
of
EMI
issues
and
disconnects.
Unfortunately
its
trial
and
error
to
figure
this
out.
From
my
testing
the
Superbpag
7
port
hubs
seems
to
be
the
best
for
this
type
of
application
and
provides
lots
of
power
per
port
and
works
under
all
three
OSes.
Eyeboot
also
makes
great
hubs
for
these.
Q
:
B
fg
miner detects my m
oo
nlander but n
o
thing ha
pp
ens when it connects to my
pool
Don’t
forget
that
even
though
this
is
a
very
powerful
scrypt
miner
for
its
size,
its
still
“slow”
when
compared
to
other
ASICS
which
most
pools
are
optimized
for
these
days.
Some
pools
have
a
scrypt
difficulty
default
of
4k
or
higher,
in
which
case
it
could
take
up
to
an
hour
for
your
moon-
lander
to
find
and
submit
a
share.
Even
if
you
don’t
see
a
share
submission,
you’ll
know
your
stick
is
hashing
correctly
right
away
because
the
ASIC
diff
on
device
is
set
really
low,
so
you
should
be
able
to
see
~
2
red
LED
flashes
a
second.
If
you
want
a
faster
pool
submission
rate
(again
slow
shares
DOES
NOT
effect
profitability,
since
each
share
is
just
worth
more),
set
your
diff
to
1k
or
lower,
contact
your
pool
operator
for
what
diffs
they
have
set
for
each
port.
Last updated:
31
/
10
/201
8
Page
8
of
12
MOONLANDER 2
USB Stick Miner User Guide
