Remote controlled metal detecting Robot with the remote transmitting images
SUMMARY
Path Finder was sent to Mars in 1998, it was a great achievement, which discovered the secrets of the "Mars". This project deals with the RF controlled robot. It is a prototype of a robot for "Finder Path".
This robot is controlled by the RF remote control. It can be moved forward and backward Motors Use 60 min. In addition, this robot can take a sharp left and right to development of the chips. This project uses a AT89S52 programming the MCU as STIs. high sensitivity metal detector designed induction type Colpitts oscillator using this principle and is attached to the robot. There is also a wireless voice carries a camera using the Kit.
When the robot is moving on the surface, the system will beep when it detects metal. This will be a beep sound remotely like it. At the same time the images around the robot will be transferred to a remote place. The user can monitor the images on television and metal detecting alarms.
RF modules used here has a 433 MHz transmitter STT, receiver STR-433 MHz RF HT648 RF sensor Decoder HT640 year. It has three switch associated with RF transmitter RF Encoder, through. Coder continuously reads the State of radio buttons, passes the date on the radio transmitter, the transmitter and passes the time.
This project uses a 9V battery. This project is much useful for mine detection and video surveillance systems
Project overview
The aim of this project is to control the movement of a remote-controlled robot to detect metals and view the images surrounding the robot.
The main objectives of this project is the use of radio frequency bands.
 the movement of the robot is controlled via the transmission of signals through the air.
 the receiver detects signals from the air.
This mini project  allows you to use the transmitter and receiver on 433 Mhz, which is available at a low price, making it a very complex Hencse.
 management of radio-frequency-based Provesi cheaper compared to the controls on the basis of the Red INFRARED working range is limited to only a few metres distance.
• When the robot is moving on the surface, the system will beep when it detects metal. This will be a beep sound remotely like it. At the same time the images around the robot will be transferred to a remote place. The user can monitor the images on television and metal detecting alarms.
Chapter 2
WIRELESS COMMUNICATION
Wireless communication, as the term implies, allows information is exchanged between devices without the use of a wire or cable. wireless keyboard sends information to a computer without using the keyboard cable; cell phone sends information to another without using a handset phone cord. Change TV channels, opening and closing the garage door, and transfer files from one computer to another can be achieved by all of the wireless technology. In all cases, policy, information is transmitted or received using electromagnetic energy, electromagnetic radiation is also called. One of the best known sources of electromagnetic radiation is the Sun; Other common sources include TV and radio signals, lamps and microwave ovens.
2.1. Radio Frequency-its needed
RF frequency or frequency within a range of about 3 Hz to 300 Ghz. This range corresponds to frequency of alternating current electrical signals to produce and detect radio waves used.Since most of this range is outside of vibrational speed most mechanical systems CAN respond to, RF usually refers to oscillations in electrical circuits. RUSSIAN is widely used because it does not require any line-of-sight, less distortion and without hindrance. Examples include cellular and cordless telephones, radio and TV stations, satellite communication systems, and two-way radio services operating in the radio-frequency spectrum by all.
2.1.1. a brief description of the RUSSIAN FEDERATION
Radio frequency (RF for short) is a term applied to AC política (AC) with the characteristics of the biggest fan if this year is entered in the antenna, the year of the electromagnetic (EM) field is suitable for wireless broadcasting and/or relationship. The frequency of electromagnetic radiation coating woven much of the spectrum extending from 9 kHz (9 kHz), wireless EXCLUSIVE Designated frequencies (within the human hearing) to thousands of gigahertz (Ghz).