This document describes a wireless image transmission robot with a metal detector. The robot uses an ATmega328 microcontroller and RF modules to transmit live video from an onboard camera to a smartphone over WiFi. It is controlled remotely via radio signals and includes a metal detection circuit to detect metals. The robot is intended for applications like surveillance, security, and mines detection by allowing users to view areas that may be dangerous or inaccessible for humans.

1. CAREER POINT UNIVERSITY
Wireless Image Transmission By Robo
With Metal Detector
Under the guidance
of
Mr.Pankaj Chawla
Head of the Department
Submitted by
Sourabh Chourasiya , Shivangi Singhal , Omender Sharma
6th Semester, 3rd Year , Electrical Engineering

2. Contents
1. Abstract
2. Project Overview
3. Block Diagram
4. Components Used
5. Working of Project
6. Applications
7. Advantages
8. Disadvantages
9. Conclusion
10. References

3. Abstract
In today’s life technology plays very important role. Day by day manual works are
reduced. Many companies use robots to make their products effectively and
efficiently. In this project we are making a robot which is used to transfer the live
images on Smart phone by using Wi-Fi. We are also controlling the movements of
our bot by using radio frequency communication. This project uses ATMEGA 328
PU as its controller. Also a wireless camera with voice is interfaced to the kit.
We are also using metal detector circuit to detect metal.

4. Project Overview
We get the idea of this project from a Bollywood movie “Raju Chacha”, in which the
children of Mr. Rishi Kapoor in that movie uses a car which has a ability to transfer live
video in a long distance, a camera put on that car for transfer live video.
For our Major project we are making same car as a robot for the same work. In this project
we are giving the facility to the user to see , what happened in 100m area. It gives the live
video on the user android mobile phone by using Wi-Fi. This robot is also send to that type
of area where human being cannot able to go. This robot prototype for the “Path Finder”.
This robot is used for security purpose, mines detection and surveillance applications.

5. Block Diagram
ATMEGA328P
Motor
Driver
CameraRF Receiver
RF
Transmitter
Mobile
Phone
(Live
Display)
Motor
Motor

6. Components Used
ATMEGA
328P
RF Module
434Mhz
Metal
detector
Encoder
L293DRelay
Camera
DC Motors
Smart
phone

7. ATmega 328-PU

8. Basic Diagram
of
ATmega328-pu

9. 1. 8-bit Microcontroller
2. 32kb Rom
3. 2kb Ram
4. 14 Digital I/O pins
5. 6 PWM output pins (6 from Digital)
6. 6 Analog input Pins
7. operating voltage 1.8-5.5 volt
8. Clock Speed 16 MHz
9. DC Current per I/O pin 2mA
10. EEPROM 1 KB
Microcontroller ATMEGA328-PU

10. RF Module

11. RF module
1. RF module works a frequency of 434Mhz.
2. This module has a transmitter and receiver part.
3. A wireless radio frequency (RF) transmitter and receiver
can be easily made using HT12D Decoder, HT12E
Encoder.

12. RF Transmitter
General Description:
Frequency Range:315 / 434 MHZ.
Supply Voltage: 3~12V.
Output Power : 4~16dBm
Circuit Shape: Saw
Standard Operating Voltage : 5V
Range of transmitter is approx. 100 meters.

13. RF Receiver
General Description:
Receiver Frequency: 315 / 434 MHZ
Typical sensitivity: -105dBm
Supply Current: 3.5mA
IF Frequency:1MHz
Features:
1. Low power consumption.
2. Operation temperature range : ﹣20℃～＋70℃
3. Operation voltage: 5 Volts.
4. Available frequency at: 315/434 MHz

14. Metal Detector
Principle
The operation of metal detectors is
based upon the principles of
electromagnetic induction. Metal
detectors contain one or more
inductor coils that are used to interact
with metallic elements on the ground.
The eddy currents induce their own
magnetic field, which generates an
opposite current in the coil, which
induces a signal indicating the
presence of metal.
A metal detector is a portable
electronic device which penetrates
the ground magnetically in order to
find traces of metal. This metal
could either be discarded pieces of
aluminum or valuable coins,
jewelry and other buried treasures.

15. Metal Detector Circuit Metal Detecting Coil

16. L293D
1. L293D is a motor driver IC.
2. L293D is a 16-pin IC which can control a set of two
DC motors simultaneously in any direction.
3. It can control two dc motor with a single L293D
IC. Dual H-bridge Motor Driver integrated
circuit(IC).
4. Ground Pins - 4
Input Pins - 4
Output Pins - 4
Enable pins - 2
Voltage Pins – 2
5. L293D consist of two H-bridge.
6. The maximum voltage ranges from 5v and up to
36v.
7. It can supply a max current of 600mA per channel.

17. L293D – Motor Driver IC

18. Relay
1. A relay may also be called an “electromagnetic
switch”.
2. Relays use a “low amperage circuit” to control
a “high amperage circuit”.
3. Relay is the 5 pin device.
C1, C2,Com, NO, NC.

19. IP Camera
An Internet protocol camera, or IP camera, is a type of digital video camera commonly employed
for surveillance, and which, unlike analog closed circuit television (CCTV) cameras, can send and
receive data via a computer network and the Internet. Although most cameras that do this
are webcams, the term "IP camera" or "netcam" is usually applied only to those used for
surveillance.
Advantages
Two-way audio via a single network cable allows users to communicate with what they are seeing
(e.g. Gas Station clerk assisting a customer on how to use the pay pumps)
Flexibility: IP cameras are able to function on a wireless network .
Remote accessibility: live video from selected cameras can be viewed from any computer,
anywhere, and also from many mobile smartphones and other devices.

20. IP Camera

21. Working of project
The RF module consists of 434 MHz RF transmitter & receiver for making bot wireless. IP Camera is
mounted on robot. We have to choose the direction of the remote by pressing respective switches
which are connected to encoder. The data transmitted to RF receiver through RF transmitter. The
receiver module receives the transmitted data and passes the data to the microcontroller. The
microcontroller changes the direction of the robot according to the specified command. As it moves in
the specified direction, if it encounters any person entering into the secured premises camera notices
this and it gives live image through smartphone where the entire view of the predefined location can
be viewed all the time. It can also detect the motion and transmit audio. We have also used metal
detector circuit in the project. When metal or coin comes in the range then it gives alert through
buzzer.

22. Application
1. Surveillance appliances
With the help of microcontroller, remote and other intelligent control technologies embedded in
the project offer the end user to easily access greater control of their products. The use of a camera
helps to view the location under control. the project’s various surveillance appliances include the
monitoring of the robot and thereby the view of the camera so as to observe the location being
detected.

23. 1. Longer range.
2. No line of sight is needed.
3. It is not sensitive to the light.
4. It is not much sensitive to the environmental changes and weather conditions.
5. Not blocked by common materials: It can penetrate most solids and pass through walls.
Advantage

24. Disadvantage
1. Higher cost than infrared.
2. Federal Communications Commission(FCC) licenses required for some products.
3. Lower speed: data rate transmission is lower than wired and infrared transmission.
4. Interference: communication devices using similar frequencies - wireless phones,
scanners, wrist radios and personal locators can interfere with transmission.

25. The implementation of RF based robot is done successfully. The communication is
properly done without any interference between different modules in the design. Design
is done to meet all the specifications and requirements. Continuously reading the
commands from the transmitter and change the direction of the robot accordingly and
also monitor the output wireless. The mechanism is controlled by the microcontroller. It
can be concluded that the design implemented in the present work provide portability,
flexibility and the data transmission is also done with low power consumption.
Conclusion

26. Electronics for u
http://www.hobby-circuits.Com/circuits/alarms-and-security
http://www.talkingelectronics.Com/projects/200trccts/metaldetectors/metal
detectors-1.Html
http://www.engineersgarage.Com
http://www.8051projects.Net/t33529/8051-discussion-forum/rf-module-
microcontroller.Html
http://www.pic-tronics.Com/how-to-make-a-wireless-spy-camera.Php
References

27. THANK YOU !!!