ABSTRACT

This project presents the overall design of in hand automation and controlling system (IN

HACS) with low cost and wireless system. This system is designed to assist and provide

support in order to fulfill the needs of elderly and disabled in home. Also, the smart home

concept in the system improves the standard living at home.

In HACS is mainly concentrated on water level in tank and LPG gas automations. The

android app which will be built as a part of this system will have the capability of visually

interpreting the water level in tank and amount of gas availability in cylinder and also

capable of controlling the water level in the tank, switching on/off, ordering the cylinder.

The detection systems placed at water tank/gas cylinder would identify current state

and the respective information is sent to microcontroller via data transmission system. The

processed inputs at microcontroller will be displayed in the user interface of the app which

will provide the current water level /amount of gas. Based on the inputs from detection

systems, user is provided with an option to control those with app i.e. maintain constant water

level, order for new gas, and switch on the motor pump and on /off gas cylinder.

The main objective of this project is to achieve convenience, intelligence and

controllability by implementing automated and handy approach for typical hose hold

purposes.

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LIST OF FIGURES

Fig. No.

Figure Name Page No.

3.2.1 Pin diagram of Atmel 89C51 Micro controller 11

3.2.1.1 Oscillator Connections 163.2.2 Pin diagram of L293D motor driver IC 18

3.2.3 Voltage regulator-7805 20

3.2.4 HC05 Bluetooth Module 09

3.2.5 pin diagram of ADC0804 133.2.6 DC Motor 173.2.7 Transistor 293.2.8 Symbol of resistor 303.2.8 Variable Resistor 30

3.2.8 103 J Resistor 313.2.9 Symbol of capacitor 32

3.2.9 Types of capacitors 333.2.10 LED 343.4 Flow chart 423.5 UML diagram 42

4.1 Block diagram 43

4.2 Circuit diagram 43

5.1.1 Bluetooth enabled 44

5.1.2 Water level 44

5.1.3 Gas level

LIST OF TABLES

Table No.

Table Title Page No.

3.2.1 Pin description of Atmel 89C51 Microcontroller 123.2.2 Pin Description of L293D Motor driving IC 193.2.5 Pin Description of ADC0804 26

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List of Abbreviations

IC Integrated Circuit LED Light Emitting Diode

DC Direct Current UART Universal asynchronous receiver/transmitter

IOT Internet of things CMOS Complementary Metal Oxide Semiconductor CPU Central Processing Unit ADC Analog to digital converter

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