in this video you will learn how to make
an OTG cable that can charge the LG g3
at the same time there are many uses for
this cable like if you want to repurpose
old phones or tablets as a car reversing
monitor a satellite find a monitor or a
small home server and many other uses
but before we start let me give you a
brief introduction so that you
understand how this cable works this is
a microUSB charging cable and this is a
micro USB OTG cable the difference
between them is in charging cables the
fourth pin and the fifth pin of the
microUSB connector are not connected
together but in OTG cables the fourth
and the fifth pin are connected together
in order to make the OTG cable charge
the phone at the same time you need to
trick the phone by inserting the cable
as a charging cable at first and let the
phone charge
once it starts charging press the switch
to turn it into an OTG cable
if you want to make this cable then do
the following get an OTG cable and then
remove the plastic shell from this
microUSB connector usually there are
five pins in micro USB connectors but
some OTG cables have only four pins like
the one shown in this video so you need
to replace it with a five pin micro USB
connector
now connect a wire to the fourth pin and
connect another wire to the fifth pin
and then route the wires out of the
microUSB plastic shell as shown now
connect to switch between these two
wires
also for the charging you need to add an
external USB power supply to the OTG
cable simply connect the red wire with
the red wire and connect the black with
the black and don't connect the green
and white wires to the OTG cable
so now when the switch is off the phone
will recognize the cable as a charging
cable but if the switch is on the phone
will recognize it as an OTG cable now
the OTG charging cable is ready to use
it do the following turn off the switch
and then connect it to the phone now the
phone will start charging like with a
regular charging cable and then turn on
the switch to make it an OTG cable as
you can see the mouse is working while
charging the phone this method works on
most microUSB phones including the LG g3
but keep in mind that this method is not
official so you do this at your own risk
if you want to make the official method
then simply replace the switch with a
resistor the value of the resistor
depends on the phone that you have I
made a dedicated video on my channel
which shows you how to make the docking
station which also enables you to use
the OTG function and charge the device
at the same time I even managed to
enable the OTG function on the samsung
galaxy brand which is known for not
supporting the OTG function if you are
interested you can find these videos on
my channel I'll leave the links in the
description of this video there are many
uses for OTG charging cables like for
turning an old phone or tablet into a
car reversing monitor or for watching
satellite TV but you will need to use an
easycap adaptor also if your OTG cable
already comes with an external USB power
like this one then you can skip the step
which includes adding an external USB
power to the OTG cable also if you have
an OTG hub cable like this one from ebay
then you need to open it and disorder
the diode and then short its pads with a
blob of solder that diode prevents the
power from reaching the phone and
charging it thanks for watching
you