Remote Controlled Home Appliance
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Transcript of Remote Controlled Home Appliance
Presenented by-SAMIR AHMED
ETE:104018
IntroductionRemote Controlled Home Applience is a microntroller based wireless system. we choose infrared to design the remote control system for home appliances for our project. Here we used
IR Transmitter (Commonly Used remotes for home appliances) and IR Sensor Modules The
major aim of this project is to deliver the technology of modern world in our country at
low price to general people. The overall performance of the power supply (PS) is
excellent as a constant supply to drive any small load.
Objectives To design and implement +5V variable DC
power supply. To design a remote control system for home
appliances. To implement this system for different
appliances with a single remote. To study about its further application.
Features Wireless management system. Simultaneous control of all distribution
lines. Line activity status check. Emergency breaking of supply when
needed. Data logging of activity throughout a
simple text file.
Easy to use in common purpose
Hardware
Sl.No.
Name Of the Components
Specifications Quantity
01. IR receiver TSOP 1738 0102. Resistor 47Ω-0.25W;
330Ω-0.5W;(1KΩ;3.3KΩ;1.5KΩ)0.5W0.12Ω-0.25W
010201 Each05
03. Capacitor 220µF-16V; 470µF-35V 01 Each04. Transistor BC547(NPN); 01
05. IC MOC-3021(opto-
isolator)01
06. Diode 1N4007(Rectifier) 0207. Triac BT136 0108. Switch 2 pin 0509. LED 0.2-2V;10mA
(Red&Green) 04
10. Microcontroller ATEMEGA8A-PU 0111. Disply 16*2 LCD disply, com.
anode01
12. Bulb 220/240V;100W 01
a) For IR receiver circuit:
Project Photo
Circuit Diagram
How It Works
Atmega8 microcontroller have it’s internal RC5 Remote control interface which can communicate as peripherals with TV remote.. Infrared (IR) rays generated by the remote control are received by the IR receiver module TSOP1736-1T of the circuit. MicrocontrollerrPin PDB(0,1,2,3)is connected to LED1,2,3,4(red) which glows to indicate that the appliance is ‘on. Transistor T2 (BC547) connected to pin 2 of IC drives Opto-isolator(MOC3021) which gate pulse activate triac(BT136). A 16*2 LCD has set with proper interface.
Advantages
I) For power supply: 1.For DC output only two rectifier diode is used instead of
Bridge rectifier circuit. 2.For filtering and smoothing only one capacitor is used for
each purpose. 3.Variable DC voltage (0-5V) can be obtained. 4.Low cost and portable. II) For IR receiver: 1.Any home appliances can be operated (ON/OFF) with this
circuit. 2.Easy circuit operation and power consumption is low. 3.Appliance states (ON/OFF) indication system are facilitated. 4.This circuit is protected from oscillation or interference by
using separate power supply. 5. Low cost and highly reliable
Application: The scope of application of this circuit is wide- a.It can be used as a remote switching device. b. Any electrical devices (for example; lamp/fan/TV/oven/air
conditioner etc.) can be connected to the relay if the relay contact can handle rated voltage and current.
c. The receiver circuit can sense any IR signal from TV/VCD/DVD remote control of wavelength between 850-950 nm.
II) For power supply: a)This circuit is applicable where 0V to +5V DC is required. I) For remote control switching circuit: b)It can be used as a constant DC source of 0V to +5V.
Cost Statement
Item Price Item PriceAtmega8 100 Tk TSOP1736 80 Tk
MOC3021 35 Tk Transformer
100Tk
LCD 350 Tk Triac-BT136
15 Tk
7805 15 Tk Accessories
250 Tk
Total 945Tk
Conclusion
The major aim of this project is to deliver the technology of modern world in our
country at low price to general people. The overall performance of the power supply (PS) is excellent as a constant
supply to drive any small load. Though economic condition is main factor for designing, so we tried to minimize the
cost as least as possible and within 400 taka this circuit can be constructed in the homeBesides, its features can be extended in
accordance with requirements.