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CELL PHONE OPERATED LAND ROVER
Bachelor Degree in Electronics& Communication
Submitted to the
Pranveer Singh Institute of Technology
Bhauti, NH-2 Kanpur
Name of the Scholars:
Mr. Nagesh Kumar mishra 2816431002
Mr. Pankaj Kumar 0716431069
Mr. Rajeev Pandey 0716431085
Mr. Shatrujit Mal 0716431101
Under the supervision of:
Ms. Akanksha Srivastava (Lecturer)
Ms. Swati Gupta (Lecturer)
Title of Thesis:
“CELL PHONE OPERATED LAND ROVER”
Radio control (often abbreviated to R/C or simply RC) is
the use of radio signals to remotely control a device. The term is used frequently to
refer to the control of model vehicles from a hand-held radio transmitter.
Industrial, military, and scientific research organizations make [traffic] use of
radio-controlled vehicles as well.
A remote control vehicle is defined as any mobile device that is controlled by a
means that does not restrict its motion with an origin external to the device. This is
often a radio control device, cable between control and vehicle, or an infrared
controller. A remote control vehicle (Also called as RCV) differs from a robot in
that the RCV is always controlled by a human and takes no positive action
One of the key technologies which underpin this field is that of remote vehicle
control. It is vital that a vehicle should be capable of proceeding accurately to a
target area; maneuvering within that area to fulfill its mission and returning equally
accurately and safely to base.
Cell phone as Cell phone as
a Transmitter a Receiver
1.2 MOTIVATION AND PROPOSAL:
Conventionally, wireless-controlled robots use RF circuits, which have the
drawbacks of limited working range, limited frequency range and limited control.
Use of a mobile phone for robotic control can overcome these limitations. It
provides the advantages of robust control, working range as large as the coverage
area of the service provider, no interference with other controllers and up to twelve
controls. Although the appearance and capabilities of robots vary vastly, all robots
share the features of a mechanical, movable structure under some form of control.
The control of robot involves three distinct phases: reception, processing and
action. Generally, the preceptors are sensors mounted on the robot, processing is
done by the on-board microcontroller or processor, and the task (action) is
performed using motors or with some other actuators.
so the motive is that to increase the range of remote controlled products.for this
mobile phone operated control is best because we can globalize our project & no
limitation of range.
We proposed this project to the Electronics & Communication Department so as to
give a new direction to the above topic and to globalize the use of land rover with
very less noise interference.
1.3 AIMS AND OBJECTIVES:
The objective of our project is to control the robot by mobile phone. In this
project, the robot is controlled by a mobile phone that makes a call to the mobile
phone attached to the robot. In the course of a call, if any button is pressed, a
tone corresponding to the button pressed is heard at the other end of the call.
This tone is called ‘dual-tone multiple frequency’ (DTMF) tone. The robot
perceives this DTMF tone with the help of the phone stacked in the robot. The
received tone is processed by the ATmega16 microcontroller with the help of
DTMF decoder MT8870. The decoder decodes the DTMF tone into its equivalent
binary digit and this binary number is sent to the microcontroller. The
microcontroller is pre programmed to take a decision for any given input and
outputs its decision to motor drivers in order to drive the motors for forward or
backward motion or a turn. The mobile that makes a call to the mobile phone
stacked in the robot acts as a remote. So this simple robotic project does not
require the construction of receiver and transmitter units. DTMF signaling is used
for telephone signaling over the line in the voice-frequency band to the call
switching centre. The version of DTMF used for telephone tone dialing is known
as ‘Touch-Tone’. DTMF assigns a specific frequency (consisting of two separate
tones) to each key so that it can easily be identified by the electronic circuit. The
signal generated by the DTMF encoder is a direct algebraic summation, in real
time, of the amplitudes of two sine (cosine) waves of different frequencies, i.e.,
pressing ‘5’ will send a tone made by adding 1336 Hz and 770 Hz to the other end
of the mobile phone.
The method of project operation is given below.
Makes call to the mobile phone (as receiver) attached to the robot. Now after
answering the call, and in the course of the call, if any button is pressed control
corresponding to the button pressed is heard at the other end of the call. This tone
is called dual tone multi frequency tome (DTMF) robot receives this DTMF tone
with the help of phone stacked in the robot.
The received tone is processed by the 16F72 microcontroller with the help of
DTMF decoder MT8870 the decoder decodes the DTMF tone in to its equivalent
binary digit and this binary number is send to the microcontroller, the
microcontroller is preprogrammed to take a decision for any give input and outputs
its decision to motor drivers in order to drive the motors for forward or backward
motion or a turn. The mobile that makes a call to the mobile
phone stacked in the robot acts as a remote. So this simple robotic project does not
require the construction of receiver and transmitter units. DTMF signaling is used
for telephone signaling over the line in the voice frequency band to the call
switching center. The version of DTMF used for telephone dialing is known as
touch tone. DTMF assigns a specific frequency (consisting of two separate tones)
to each key s that it can easily be identified by the electronic circuit. The signal
generated by the DTMF encoder is the direct al-gebric submission, in real time of
the amplitudes of two sine (cosine) waves of different frequencies, i.e. ,pressing 5
will send a tone made by adding 1336hz and 770hz to the other end of the mobile.
1.5 EXPECTED TIME SCHEDULE(PERT CHART):
1.5.1 Phase I:
This is the basic phase but the most time consuming phase as this phase involve the
The primary step toward the search of components& ICs which will be required.
For the designing of our project we require we some specific hardware and
software and then interfacing the components each other to accomplish the task
required by our project.
Hence our mainly consist of two parts-
3.1 HARDWARE REQUIREMENTS
The main components of the hardware section of our project are given as:
• Microcontroller (PIC 16F72)
• Crystal Oscillator (4 MHz)
• DTMF decoder IC(MT8870)
• Motor driver (H-bridges using Relay switches)
• DC Motor
• Voltage Regulator (IC 7805)
• Wireless Camera
• TV Resistors, Capacitors
• Tuner Card,Resistors,Capacitors
1.5.2 Phase II:
In this phase we will try to develop the Interfacing design circuit in PCB. In PCB
first we will draw the interface circuit of land rover then after some Steps of pcb
designing we will fabricate the different ICs & microcontroller. A cell phone will
be also connected in the circuit with interfacing with DTMF Decoder IC.A motor
driver IC will interface with microcontroller& DC motors. In the below shows the
block wise interfacing of different ICs & devices.
1.5.3 Phase III:
LEFT MOTORS RIGHT MOTORS
This is the final phase of project aspects, in this phase we will write a program for
Fig. 1.2 Block Diagram
given the instruction to the microcontroller. a program is written in C language and
converted this source program in Hex code for burn it into microcontroller. For this
we will use mainly two software given below.
• Compiler (Proton)
• Source Code
This phase also include final testing of all coding, Interface circuit functioning &
performance of whole system. If any error will be generated then we will try to
remove this error by the modification on the circuit.
1.6 IMPACT OF THE PROPOSED WORK IN ACADEMICS AND
This project will have a huge impact on academics and industry. With the help of
this project we have tried to depict the modern & global application of cell phone.
Mobile phone for robotic control can overcome these limitations and provides the
advantage of robust control, working range as large as the coverage area of the
service provider, no interference with other controllers.
This project is very useful on the Military usage of remotely controlled military
vehicles .the vehicles are controlled by the cell phone then the range of control will
be broad& by the use of wireless camera we can detect the position of enemies.
The industry can find major application of this project in developing mobile
operated products as commercial projects. As security feature is most important
factor of this project so industries have scope of finding some relevant information
in building up of commercial land rover. They may be used in any search
operations, where men power cannot work.
This project will also prove beneficial in academics. The students can learn various
principles and terminologies proposed in this project which would help their cause
of advancing this technology by adding their innovative ideas and thoughts.
1. Wikipedia - The free encyclopedia
2. h t t p : // ww w . 8051 p r o j e c t s . i n f o /
3. h t t p : // ww w . i n s t r u c t a b l es . c o m /
4. c e ll p h o n e o p e ra te d la n d roEvleecrt r onics For You’ Magazine
Edition (july 2008)
5. “DTMF Tester” , ‘Electronics For You’ Magazine , Edition