hey guys in this video I'm going to show
how to make a RC transmitter
For this project you'll need an
an arduino uno, a NRF21l01 module with
power amplification the one with
antenna and a NRF adapter this
provides 3.3V to the NRF
I have also soldered some 
wires to connect it to the arduino
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you will also need two toggles switches. this provide digital
data to the receiver and you will also need
two joysticks this is a very professional
joysticks it is used in professional
transmitter I have bought it for very
cheap I will be providing the links to
buy it in my website make sure to check
the links in the descriptions, to
go to my websites for it you will also
need 3 lithium-ion batteries of
3.7 volts I will make battery pack with it
of 11.1V
this is my 3d printed body for the
transmitter I will be providing the STL
files in my website. you will
also need some screws and some wires
and you will also need a BMS 
I will show you how to do it so first of
all I will add the toggle switches in
place this is how it should be
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and I've secured in using the bolt
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now I will be adding joysticks this one
is for the throttle so I will add it to the
left side of the transmitter body
because I  am will a right-handed
person you can anytime changes its place
and then I will screw it
so this is how our transmitter will look
like now we have to make the electrical
connections
I will firstly start with the arduino Uno
I will connect the wires according to
this circuit you will find this circuit
in my website make sure to check that
this we can be look for the links we
will do my website for this diagram
first of all I will protect the NRF
adapter to the hard you know according
to the circuit just shown before this is
how it should look like I have not yet
connected the VCC and the GND
0:03:29.630,0:03:39.350
because I will common connection for the
VCC and the ground this is the PCB prototype
that I am using to connect all the
VCC pin together I will connect all
the VCC pin on it and then I will connect it
directly the VCC pin of the arduino which
is the backbone I have done the same for
the ground 
this will supply
power for all the joysticks and 
NRF now I am connecting the other pins
of the joystick to the analog pins of
the arduino
using the annuity want it to keep three
things now I'm going to make the battery
pack according to the diagram in my website
make sure to check my website for it so
this is how the battery pack will look
here I have the positive and negative
terminal which we will get to the 11.4V
and this is the balancer this will we
will use to charge the battery pack without
damaging it using this BMS I will show
it in my website how to do it now I will
connect this battery to the arduino, first of all I'm
placing it into the back side of the
transmitter I will now add a switch to
it before connecting to the arduino so
that we can switch on and switch off
anytime now I'm going to connect the
positive one after the switch to the
Vin of the arduino this is where
you can supply from 5 to 12 volt to the
Arduino and we are supplying 11.4 V
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you can see our circuit is working for the
the NRF adapter is working now I will
add the NRF to it
now before doing anything else we need
to program it and i am using my USB 
 I will program it
this is my programming that I have done
I will not explain here you can check in
my website for this programming make
sure to check in the link below for it
now we will upload the code to the arduino
I have already uploaded the code to the
arduino I will now put the back side
and the back side of the transmitter
together to cover everything at
everything for this I am using tape to
stick the battery to the backside of
the of the transmitter body so that it
does not mess up I will add a switch to
this port this is actually useful a OLED
display which we can do to display
the battery level  I'm not
doing it I will be in my future project
now you have to do this use a and postal
to school this this is how our also
transmitter will look like we can see
it's working now we have to test
it to test it I am using my previously
made receiver using Arduino Pro Mini
you can check it if
you have not checked the video yet make
sure to check the video how to make this
professional small receiver 
click the link in the description below
so this is the brushless motor connected
to an ESC and a 7.4 for lithium polymer
battery
all ESC have a BCE soup which provides
five volt output so I will use this file
for this you can see the red and the
brown wire provide a 5 volt output which
I will use to connect to my receiver I
have all i have also added wire for
us to check if the signal is being received
so I will connect the positive and
negative terminal of the receiver to the
receiver and you can see it's lighting
up so first of all I will use my
oscilloscope to check if we are
receiving the signal from the
transmitter I'm connecting with the
ground to the GND and the positive to
the digital pin 3 you can see
this is a PWM signal that we are
receiving and we can vary it using our
transmitter so our transmitter is
working very well I have not tested it
using the other joysticks I have added
only this joystick this is the circuit
for our receiver 
