home automation system using microcontroller

he is b.tech (ece) from lovely professional university. our home can also be made smart by implementing a real-time home automation system that monitors parameters like power consumption and human presence. presented here is a touch-control based home automation system that can control up to six electrical devices. it also has a separate keyboard interface module for troubleshooting and system settings. the complete system is assembled in a small, portable central processing unit (cpu) chassis for an aesthetic look and uninterrupted 24×7 usage. the system is housed on the cpu chassis of a desktop computer and is powered by 400w atx power supply for error-free operation and proper power delivery to the system.

the circuit of the main module is shown in fig. 2. it has atmega8 microcontroller, ds1307 rtc chip and ne555 as the main components. the system has a standby mode indicator. led1 is a power-on indicator and led2 is a system-active indicator. when rl1 is energised, led2 glows, indicating that 12v is available from con1 to con3 and the complete system is active. it glows when a shut-down command is received from the user till the system shuts down completely.

rf communication between the transmitter and receiver modules works on the principle of serial communication, which means the rf transmitter will send the data serially to the rf receiver which is paired to it. this 4-bit parallel data is converted to serial data by the encoder ic and this serial data is sent to the rf transmitter. depending upon the type of application, the rf module is chosen. rf transmitter is used to transmit the data while the rf receiver is used to receive the data. the ht-12d is a serial decoder ic which is used with rf receiver for decoding the received serial data back to original parallel data. to use the on-chip oscillator, an 11.0592mhz quartz crystal is connected to xtal1 and xtal2 pins.

a 10kω resistor is connected from the rst (pin 9) of the microcontroller to ground. a 10kω pot is connected to contrast adjust pin (pin 3) of the lcd to adjust the contrast of the display. the data pin of the rf receiver is connected to din pin of the ht-12d decoder ic. a 1kω resistor is connected to the base of the transistor. the data pin of the rf transmitter module is connected to the dout pin of the encoder ic. this is to avoid the junk data , received by the receiver module , when it is pairing with the transmitter.

the advantage of the internet module is that the home appliances can be controlled from anywhere in the world. the systems also use the dtmf (dual-tone multi- in this project we made remote controlling home automation system. the avr microcontrollers are based on the advanced risc architecture and consist of. home automation system: main module the circuit of the main module is shown in fig. 2. it has atmega8 microcontroller, ds1307 rtc chip and, home automation system project using microcontroller pdf, home automation security system project, home automation security system project, best microcontroller for home automation, microcontroller based home security system project report pdf.

the development of automated energy saving system using microcontroller is the project to save the energy power. this project are used various sensors, automatic systems are being preferred over manual system. through this project we have tried to show automatic control of a house as a result of which power is smart home automation system using 8051 micro-controller. rishabh malhotra1, saiyed mohammad saad1, ruchit soni2. 1indus institute of technology and, home automation system using bluetooth, wireless home automation project, bluetooth controlled home appliances project report pdf, home automation system final year project, home automation project controlled through digitally, home automation electronics, embedded system projects using microcontroller, rf based home automation system.

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