[adil]

i did not did it.but i tested the lcd by giving voltage to led pins. regarding to the eeprom prom interlinking i wana save the passwords and after faliuer of light the password must be saved.

can you disscus it online with me? so that i can get ride of this problem? 

[adil]

plz tell me that what quantity of current this circuit needed? also current of controller.

also my lcd is totaly blank!

[adil]

i am sending you the link of door locking… 

i already cheaked the ckt by writing simplie program of toggling the output on ports. so the ckt was working fine.

also tell me about eeprom coding and interlinking with the existing code.

here is the link :                                                                           http://www.engineersgarage.com/microcontroller/8051projects/electronic-code-lock-with-password-using-at89c51

[adil]

hi! i connected the hardware as mentioned in the circuit diagram but there is no output on lcd!! so i think that is might be the problem of code (not sure but i also think the logic of code is correct and output should be pispalyed) or lack of information in the circut diagram(with great possibility).

also tell me how to interlink the code with eeprom(what the additions in code are required to do so).

[Author]

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