Code 102 MULTIPLE MICROCONTROLLERS IN LAN LIKE SETUP

The main concept of this project is to achieve a desired output in modern automobiles by connecting multiple microcontrollers in a network.

Nowadays, many microcontrollers are embedded in various kinds of electronic products from industrial environment to domestic sector. In automobile sector, cars or other vehicles have number of microcontrollers integrated within the system. The networking of microcontrollers is necessary for establishing communication between them.

This proposed system uses three microcontrollers of the 8051 family and a rectified-power supply. In this system, the matrix keypad is interfaced to the first microcontroller for input action, while the second one is connected to an output of 16*2 LCD display, and the third one is connected to the load through a relay driver. A buzzer connected to the third microcontroller is used to alert the user in the event of any deviation.

The first microcontroller takes the input as a password from the matrix keypad, and sends it to the second microcontroller to display it on the LCD, while the third one executes the output only if the password matches with the entered password. If the entered password is wrong, then it generates a buzzer sound.

This task could have been performed by a single microcontroller but the project uses multiple microcontrollers to explain the concept of networking. It is practically too inconvineint for a individual microcontrollers to handle input action, display & output, while they are located quite a distance apart say in automobile applications or factory level use.

This project in future can be enhanced by using wireless communication among other controllers by avoiding costly cabling for a factory level networking.

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