Tele Remote Controlled Robot

Abstract

This project is developed for the users to control a Robot through Telephone/Cell phone. The user can control all the operations of the Robot like moving forward, moving left, moving right, moving backward, hand up/down, picking object etc. This tele remote circuit which enables controlling the operations through telephone lines. It can be used to control the robot from any distance, overcoming the limited range of infrared and radio remote controls. The Tele remote circuit can be used to control upto 9 operations (corresponding to the digits 1 through 9 of the telephone key-pad). The DTMF signals on telephone instrument are used as control signals. The digit ‘0’ in DTMF mode is used to toggle between the appliance mode and normal telephone operation mode. Thus the telephone can be used to control operations also while being used for normal conversation. The circuit uses IC 8870 (DTMF to BCD converter), PIC16F73 Microcontroller (4 to 16 line demultiplexer), RS232 etc. The overall operation of this circuit is controlled by the Microcontroller (Programmed for demultiplexer). We can also control the devices using cell phone. The telephone signal is given to a multi channel RF transmitter. The transmitter transmits code according to the signal received from the Microcontroller. In the Robot, there is a multi channel RF receiver. The receiver receives the signal according to the telephone signal. The received signal is given to the microcontroller connected with the Robot and the microcontroller sends signal to the controlling circuit thereby controlling the operations of the robot. The microcontroller programming is written in Assembly language.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM