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PROJECT DESCRIPTION

The main intention of this project is to control home appliances by using RF technology, which helps to turn the electrical loads such as light, and fan ON and OFF through an RF-controlled remote. This is an advanced technology for home automation as it is used to make homes very smarter without requiring any switches on the walls.

Nowadays conventional wall switches are located in different parts of a house and, therefore, to switch on such switches someone has to go there and press them to turn the loads on or off. It becomes very difficult for the elderly or physically handicapped people. Hence, this project is proposed to control home appliances through an RF. With this system, by pressing selected switch of a remote its corresponding load can be controlled.

The proposed system uses a microcontroller of the 8051 family and a rectified power supply. An RF transmitter is connected to the transmitter end with the help of an encoder device. The push buttons are connected to the microcontroller as input switches.  The commands are sent by the push buttons to the receiver to control the electrical loads.

An RF receiver is connected to the receiver end with the help of a decoder device. The electrical loads are controlled by the TRIAC device which is connected to the microcontroller with the help of an op-isolator to isolate it from the controlling section.

The electrical loads are controlled by the RF remote wherein the commands are sent by the transmitter, and based on these commands- the receiver controls the electrical loads when corresponding switches are pressed to turn ON and OFF.

PROJECT HIGHLIGHTS
Remote load switching @ ZVS point.
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
  • Transformer
  • Opto-isolator
  • TRIAC
  • Voltage Regulator
  • Crystal
  • Diodes
  • Resistors
  • Capacitors
  • Lamps
  • RF modules
  • Push Buttons
Software Requirements
  • Keil compiler
  • Languages: Embedded C or Assembly
Q & A
Q:  Which microcontroller is used in this project?
A:  A 40 pin 8051 microcontroller is used in this project.
Q:  How are the readings displayed by the microcontroller?
A:  The parallel data from the decoder are displayed by the microcontroller on a LCD display.
Q:  What is the distance of RF it can support?
A:  It supports distance up to 50 feet.
Q:  What is the frequency it operates?
A:  433 MHz is the operating frequency.
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