Home automation and Digital notice board using android app

RAJNIKANT RAI

PRADEEP SINGH

ANIKET PRAMANIK

RISHIKESH

VIKASH NAGAR

SAVARAJ MANI

NIKHIL KHARODE

• A GSM based home automation system has a very low

cost of installation and maintenance.

• Flexible and Durable.

• No risk of being hacked.

• Involves daily operation costs as the user has to pay for

each SMS.

• Quick response.

• ARM7TDMI-S is a general purpose 32 bit microprocessor which offer high

performance and very low power consumption.

• LPC2148 microcontroller is based on a 16 bit/32 bit ARM7TDMI-S CPU

with real time emulation and embedded trace support.

• 8kb to 40 kb of on chip static RAM and 32 kb to 512 kb of on chip flash

memory

• In system programming via on chip boot loader software.

• Single flash sector or full chip erase in 400 ms and programming of 256 b in

1ms

• USB 2.0 full speed compliant device controller with 2 kb of end point ram.in

addition LPC2146/48 provides 8 kb of on chip RAM accessible to USB by

DMA

• Single 10-bit DAC provides variable analog output two 32 bit timers/external

event counters, pwm unit and watchdog.

• Two 10 bit ADCs provide a total of 6/14 analog inputs, with conversion times

as low as 2.44 micro sec per channel

• Low power RTC with independent power and 32 kHz clock input.

• Vectored Interrupt Controller (VIC) with configurable priorities and vector

addresses.

• 21 external intruppt pins are available.

• Multiple serial interfaces including two UARTs, two fast I2C-BUS, SPI and SSP

with buffering and variable data length capabilities.

• 60 MHz maximum CPU clock available from programmable on chip PLL with

settling time of 100 micro sec.

• GSM is the most popular standard for mobile phones in the world. It is

based on TDMA (time division multiple access) technology.

• We are using the SIMCOM 300, a GSM modem . This is a powerful

GSM/GPRS Terminal with self-contained unit.

• This has standard connector interfaces and has an integral SIM card reader.

The modem has a RJ9 connector through which a speaker and microphone

can be connected allowing audio calls being established, but this feature is

not utilized in this project as only data transfer is needed.

Enable (E)-This line allows access to the display through R/W and RS

lines. When this line is low, the LCD is disabled and ignores signals from

R/W and RS.

When (E) line is high, the LCD checks the state of the two control lines

and responds accordingly.

Read/Write (R/W)-This line determines the direction of data between the

LCD and microcontroller. When it is low, data is written to the LCD. When

it is high, data is read from the LCD.

Register select (RS)-With the help of this line, the LCD interprets the

type of data on data lines. When it is low, an instruction is being written to

the LCD. When it is high, a character is being written to the LCD.

•A relay is used to isolate one electrical

circuit from another.

• It allows a low current control circuit to

make or break an electrically isolated

high current circuit path.

Appliance 1

LPC2148

Micro Controller

Display Unit

Power supply unit

GSM

modemRelay2

Relay 1

Appliance 2

RELAY

DRIVER

Serial

driver

The program which has been fed into the LPC2148

microcontroller, has been written in Embedded C language for

LPC2148 in this software.

This is a simulation software that has been used to simulate the

program before it is actually fed into LPC2148.

Android Application

HOME AUTOMATION & DIGITAL NOTICE

BOARD

ANDROID APP

• Easy user interface, so that any body can use.

• Allow user to Switch On or Off any of the Home

Appliances through soft switch from anywhere in this

world where GSM is present.

• Safe and secure.

WHY ANDROID APP ?

Most common mobile OS in the world.

Portable and easy way to carry your home remote.

Like GSM is more secure than Wi-Fi ,App is more secure

than common messaging.

Automation flow is easily control by this App.

HOW ITS WORKS ?

When we open up the App it gives us two options

WHEN WE SELECT “LIGHT CONTROL” OPTION

Click the “Light On” OptionThis Menu Pops Up After some time

WHEN WE SELECT “NOTICE BOARD” OPTION