lcd n keypad interfacing with 89v51rd2

[naresh bn]

i am doing a simple project on home security system. it consists of keypad(4*4),lcd(16*2), stepper moter, uln 2003, 89v51rd2. as a begginer , i dont know how to interface the keypad,lcd,stepper motor to 89v51rd2. please suggest me how to interface. program is ready with me but i dont know the pin connections exactly, to give.

 

[qwertyuiop415263]

how you have written your program when you don't know the hardware connections.

see this link this will help you
Microcontrollers Tutorials: : 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes

 

[asimkumar]

just search there are plenty of books and websites
these are all basic things you can get in any book on microcontroller.
how do you got a program, the program need to match with your schematics

 

[ckshivaram]

go to 8052.com - The Online 8051/8052 Microcontroller Resource - 8052.com and find the code for all your requirement.. and modify the code to suit your hardware connections.....

also see these links'
https://www.edaboard.com/threads/141035/
https://www.edaboard.com/threads/79404/

 

[ctownsend]

program is ready with me but i dont know the pin connections exactly, to give.

post the code, someone will be able to figure out which pins the keypad & LCD use from the code.

 

[andre_luis]

Sugestion on keypad routine :

https://www.edaboard.com/threads/209587/#post885168

+++