This project makes use of the cost effective bluetooth
service provided by the cell phone in order to monitor
and control the robot.
Cell phone captures the video and sends it to the PC for
processing using the cell phone bluetooth.
After viewing the video in the PC through the provided
GUI, user can move Robot in any required direction by
sending RF signals from the PC.
RF control signals from PC are sent from the RF
wireless device connected to the PC and these signals
are received by the RF device mounted on the mobile
To control the movement of the robot appropriate
sensing mechanism has been implemented through the
The Cell phone bluetooth technology is used to transfer
the video captured by the movement of the robot to the
The movement of the robot is controlled by the PC
using RF signals.This is achieved by the RF devices in
the PC and the Robot
The PC acts as a server, which controls
the movement of robot and processes
the image transferred by the mobile
The Bluetooth dongle connected to PC
establishes the Bluetooth link between
the mobile and server
The MAX232 is an integrated circuit
that converts signals from an RS 232
serial port to signals suitable for use in
TTL compatible digital logic circuits.
Its a 28 pin IC with 3 ports.
The ports are port A, port B and port C.
Port A is used for analog inputs, port B is for data transfer
and interrupts and port C is used for serial communication.
A 20 MHz crystal oscillator provides the clock signal.
It receives the data from server through MAX 232.
It transfers the received data to HT12E encoder.
It is a 18 pin IC.
It receives the data parallelly and
transmits it serially.
The transmission enable pin must be
It converts digital data to RF signals.
It receives the encoded signals from
Its transfers the received RF signals to
the receiver end.
The range of the transmitter is 100
It receives the RF signals from TXC1
It transfers these signals to HT12D
These signals are used in controlling the
movement of the robot.
The received RF signals are
converted into digital data.
It receives the signal serially and
transmits the decoded data
parallelly to ULN2003.
The decoded data are indicated by
the LEDs on the robot.
LED – Light Emitting Diode.
It works on the basis of electroluminescence
A light-emitting diode is a semiconductor
It indicates the data received by the
It is a 16 pin IC.
The data received from the server is
given to the ULN2003 which drives
the relay as per the data, according
to which the mobile robot changes its
A voltage regulator is an
electrical regulator designed to
automatically maintain a
constant voltage level.
Relay performs the switching action based
on the data from ULN2003 driver.
These relays control the turn ON and turn
OFF action of the DC motor.
Based on these switching actions the
direction of movement of robot is controlled.
DC motor works on the principle of
DC motor consists of 6 parts namely
brushes and field magnets.
The DC motor is driven by the set of relays.
A symbian based mobile phone is
mounted on the mobile robot.
This mobile is bluetooth enabled.
The camera in the mobile captures the
images and transfers it to the server
Mobile Robot has the capability to move around
autonomously.If any hurdle is faced,PC redirects the
The controls are stored in PC that acts as master cum
The video of the movement of the Robot is transferred
from the mobile Robot to the master and processed.
Bluetooth Technology is used to transfer the video.
After transferring the video the mobile robot waits for
command or instruction from the master.
The interaction between the mobile Robot and the
master takes place in the form of RF signals. The
master has a wireless RF transmitter and the mobile
Robot has a wireless RF receiver for this purpose.
To control the movement of the robot we also make use
of appropriate sensing mechanism in the microcontroller
mounted on the mobile robot.
Easy to use.
flexible in operation.
No extra remote required.
wide range of applications.
Rugged in Operation.
Implementation of zoom in and zoom out mechanism in
Here we have done the project for a single cell pone but
the same can also be used for 2 cell phones looking in
different directions and this can give more in depth view
of its usage.
We can replace the Bluetooth by Wi-Fi so that we can
have a lot better coverage area.
It can be used in Surveillance applications.
Used in security.
Used in wild life research.
Used by defense.
Used in mines.
Used to access difficult terrains.
It can be used to explore remote locations.
This project makes use of cost effective bluetooth
technology to transfer live videos to the PC where the
data can be processed.
The mobility of the Robot is an advantage as it can
capture live video from almost any place.
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