College :
Trident Academy of Technology, Bhubaneswar, Odisha
The Sole Aim of the design is to develop a system based on embedded micro controller, which is used for calling bell for giving information to deaf and dumb people when any person will press door bell.
The basic idea of this project is to develop a model in which, a main gate having a switch arrangement with a alpha-numeric keypad .if there any person will type some text using the keypad automatically one call will be generated to Bracelet Model, simultaneously a ring will be generated in the ringer model to which a zigbee module is attached, which receives the signal of user who is deaf and dumb.
This Project uses regulated 5volt,1 ampere power supply, Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12v step down transformer.
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