Microcontroller › 8051 › how to use at89s52
- This topic has 9 replies, 2 voices, and was last updated 12 years, 4 months ago by dagakshay.
January 10, 2011 at 3:39 pm #531
hi! any one know how to impement password bassaed door locking system by using at89s52 along with eeprom?
also the code (i.e password bassaed door locking system by using at89c51 which is in project list) is not working. plz tell me about the problem!!
plz plz tell me the about the solution.January 11, 2011 at 5:17 am #5325
whats the problem xactly you facing…. elobrate yourself just the code is not working doesnt sound anything….January 19, 2011 at 8:21 pm #5343
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).January 20, 2011 at 4:55 am #5345
i advice u to check your connections ones again and go for step by step approch. check weather your controller and your ckt ar working properly. just try with one LED blinking program on all the ports. send me the link on which you saw that “door lock system….” or code project no.January 20, 2011 at 10:21 pm #5351
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-at89c51January 21, 2011 at 6:30 am #5352
if your Controller is wotking fine then go with some of very simple code with LCD. what exactlly the o/p on LCD is it totally balnk, or first line is filled with box and second line is empty. PLZ elobrate you problems so that i can help you out just things are not working doesn’t give any idea about your problem..
and also what kind of interlinking u need, go for the links to understand the EEPROM interfacing.
http://www.engineersgarage.com/microcontroller/8051projects/serial_eeprom_24c02_memory_resetJanuary 25, 2011 at 6:14 am #5368
plz tell me that what quantity of current this circuit needed? also current of controller.
also my lcd is totaly blank!January 25, 2011 at 10:22 am #5370
have you tries some simple programs with you LCD…January 26, 2011 at 6:40 pm #5371
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?January 27, 2011 at 6:57 am #5372
just giving voltage on led pins doesn’t say that you LCD is connected properly or working…
yes you can discuss check your message box (on the left top corner of this page)…
- You must be logged in to reply to this topic.