Upload
the
code
to
Arduino.
Please
note:
keep
TX
and
RX
disconnected
with
mdules
while
uploading
code
because
uploading
will
use
UART.
Connect
the
hardware
as
follows:
Please
note
that
this
module
should
be
powered
3.3V,
not
5V.
Connect
the
USB
module
to
PC.
Then
power
on.
We
took
a
picture
shown
below:
To
receive
the
string
sent
from
Arduino
to
PC,
we
can
also
use
Arduino
IDE.
Start
a
new
page
in
Arduino
IDE,
and
choose
the
serial
port
of
USB
UR24A.
Here
in
my
PC
is
COM7.
w w w . e k t
2
. c o m
