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[poll] Home Automation Project [explained]

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Ajay

Thu Jan 03 2008, 02:56AM

Rickey's World Admin

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Joined: Fri Feb 24 2006, 04:56AM

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nIVAS wrote ...

Hi Everybody.. Can anyone explain the full operation of the project home automation over internet... i need crystal clear working of circuit..

check the first post.. if anything extra.. ask me..

nIVAS wrote ...

i.e; for instance , what happens when a command is given from transmitter side.. how does MC receives it.. how it is decoded.. what will MC do with program burned inside it while receiving a command????

When command is sent from transmitter side.. it is sent to software first (HAserver.exe) and then the sent string is transferred to controller via serial or RS232 communication, This is how MC receive the command.
The commands are decoded in strfunc.c file and are converted to a number.. the returned numeric value is using switch case select the function to perform in main function. this everything is inside the controller HAserver is just an interface between controller and the user...

nIVAS wrote ...

then how will it produce signal to activate the output switches.. what type of switch must be used at output port of MC along with Power line(220v)...

The signal is simple TTL singnal.. high 5V and low 0V. The o/ps are active low.. i.e. low signal activate the switch and high deactivate it.
To connect 220V power appliances.. you need to make use an interface either a relay or an optocoupler. you can make use of the famous ULN2003 to drive the relays of high voltages.

nIVAS wrote ...

why the LCD is used.. ? then which file should i burn in MC....?? what r that c programs and what should i do with it..

Plz help me out to find answers for the above questions bcoz i m not a electrical or electronic student.. i just loved this project.. so i need to do that .. so help me..

LCD is used to display messages sent from user side.. its just an addon in the project.. like user want to give message to family members. he just have to logon to the server and leave a message.. New message indicator glows and inform that new message arrived..
The C program is the code of Microcontroller.. when you compile these C codes you get hex file which you need to burn on to the controller. you can make use of the hex file provided inside the archive if you do not have a compiler. There is not really any change needed to make in this project so you can directly use the hex file.

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Laurence_Luz

Sun Apr 13 2008, 04:26PM

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Joined: Sun Apr 13 2008, 03:49PM

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I just want to say thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!IT works as i expected !first i have doubt in it >>>but this forum helps me a lot!!!!!