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Published on Aug 2, 2011
Lift: To drive the lift from ground floor to 7th floor and from 7th floor to ground floor With the instructions of matrix keypad(4*4). Stepper motor rotates clockwise to drive the lift up and rotates anticlockwise to drive the lift down.The floor numbers are displayed on LCD's first line simultaneously as the motor rotates and the floors entered through keypad are shown in next line.
Keypad: The 16-button keypad provides a useful human interface component for microcontroller projects. The keypad can be used to Security systems, menu selection and data entry for embedded systems.
LCD: A 16x2 LCD means it can display 16 characters per line and there are 2 such lines. In this LCD each character is displayed in 5x7 pixel matrix. This LCD has two registers, namely, Command and Data.