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PROJECT DESCRIPTION

This project is an implementation of RC5- remote code for IR reception on to an 8051 microcontroller. The received code is decoded and sent to the PC- IR remote software written in Visual Basic. The cursor position  moves on the screen according to the keys pressed on the remote.

A conventional PC / laptop uses a mouse to operate and control all its applications. A  PC mouse is wired to the CPU and one has to sit near the PC to operate it. This leads to inconvenience when the PC is used for say, presentation purposes (while using a projector).By this proposed project a TV remote can be used as a cordless mouse without any interruption while operating an application.

During the operation of the project the TV remote sends coded infrared data which is read by an IR sensor interfaced to an 8051 family microcontroller. The data which is received by the microcontroller is then transmitted  to the COM port of a PC while the embedded program is executed.  A software named “PC remote” which is pre installed in the system will recognize the data received from the microcontroller through the COM port and performs the required operation. Designated keys on the TV remote are used to perform up - down, right - left cursor movement. Features like left click and right click of the mouse can also be performed by the function keys on TV remote.

Further this project can be upgraded by implementing Bluetooth/ RF technology to overcome the traditional line of sight communication drawbacks of the infrared type.    

PROJECT HIGHLIGHTS
Low Cost PC Mouse.
Call/mail for Tech Support from 10 am - 7 pm IST.
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
BLOCK DIAGRAM
Hardware Requirements
  • 8051 series Microcontroller
  • T.V Remote
  • IR Sensor
  • Level Shifter
  • Resistors
  • LED
  • Capacitors
  • Diodes
  • Transformer
  • Crystal
  • Voltage Regulator
Software Requirements
  • Keil compiler
  • Languages: Embedded C or Assembly
Q & A
Q:  What is the family of microcontroller used?
A:  A microcontroller from 8051 family is used.
Q:  What is the distance supported by TV remote?
A:  The distance supported is about 10 feet
Q:  Can this system be used with any PC or laptop?
A:  Yes, this system can be used with a PC directly. But for a laptop, a USB to DB9 converter is used.
Q:  What is the function of level shifter Max232?
A:  Level shifter Max232 is used to shift logic level from TTL to RS232 and vice-versa
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