Friday 4 April 2014

DONE WITH THE COMPLETE HARDWARE

WEEK 9

For this week I have complete interface the software with the hardware. This is how my project flow. Before touch the card, LCD will display “PLEASE TOUCH THE CARD”. User will have cards or tags registered card to access the system. The data is then sent as a packet using a two wire RS232 (or TTL) interface.When approached the card to RFID reader (approximately 6cm), the serial number of this card will be detected.A green LED will be lit and my name and ID number will be appearing in the LCD display, besides that output relay will active the solenoid high and after 5 seconds it will be active low back. Then LCD display will be reset and display “PLEASE TOUCH THE CARD” back Otherwise the system does not release the user access (unauthorized), a warning red LED will be lit and LCD will display “INVALID CARD”. During this process of release or rejection of users, characteristics beeps will be played on a buzzer (just like a sound announcement).


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