Password based Electronic lock based on pic microcontroller

[robojacob]

i want to build a electronic lock using password saved in eeprom and ****asterisk based when pressing buttons. I didnt find yet any helpful link to accomplish this task with pic microcontroller by using c or basic. Do have any idea or capability to help me???

 

[Sink0]

It is quite simple.. all you need is a keypad and an LCD 16x2... I did that for a customer once

 

[ckshivaram]

which PIC? compiler? programming language???

---------- Post added at 09:37 ---------- Previous post was at 09:31 ----------

Electronic combination lock based on PIC

 

[robojacob]

can u plz decode the ASM code ( ur link) to C or Basic or send me another useful link to know how to programme a password lock in C language for pic microcontroller???

---------- Post added at 09:25 ---------- Previous post was at 09:18 ----------

@sink0.. what i wanted is ur help to learn how can i make password lock using pic microcontroller???...if u hv made dis b4 for ur customer,paste the schematic and code here
@ck shivaram..thanks ....but i want to c any password code in C language..i don kno the assembly language....if u hv any useful link to make password lock using C lannguage..plz post it here...

 

[ZASto]

Learn assembler, then you will easily 'transpose' the code ti C or Basic, when you figure out the routines used.

Also, please do not use SMS kind of writing, messages here are not limited to 160 characters:

 

[engshahrul]

See this password set coding and password access project.

 

[robojacob]

your site is really helpful and thanks for your code.but main problem is i didnt understand the language otherwise i will start learning pic from your site

 

[engshahrul]

your site is really helpful and thanks for your code.but main problem is i didnt understand the language otherwise i will start learning pic from your site

Use google translate from malay to english. or you don't need that because the C Language is still there.

 

[robojacob]

mr.engshahrul youur coding is nice..i wanna build my c coding efficiency like you. Can u plz giv me some helpful link or name of book from where i can learn C effeiciently and fast? what's ur advice and guideline 2 learn C?? and also thanks to mr. ckshivaram.

last warning to your before bannig you from the forum for using sms typing skills

 

[engshahrul]

mr.engshahrul youur coding is nice..i wanna build my c coding efficiency like you. Can u plz giv me some helpful link or name of book from where i can learn C effeiciently and fast? what's ur advice and guideline 2 learn C?? and also thanks to mr. ckshivaram.

I don't have any microcontroller ebook. That all my experience and try-and-error.

 

[robojacob]

mr.shahrul In your coding i did not understand this part :

keypad=read_keypad();
if((keypad>=1)&(keypad<=10)){
pass[count]=keypad%10+0x30;
lcd_goto(0x44+count);
lcd_string("*");
count++;}
and specially 3rd line pass[count] where you are assigning value with adding 48 (may be to generate ASCII value,i am not sure ) and later in a part you are comparing with contents of pass[count] with saved password which is :

if(count==8){
count=0;
for(i=0;i<=7;i++){if(pass==password) count++;}

you have saved your password in password[8] with decimal vale but comparing the value with content of pass with addition of ox309(didn't understand that also)
sorry if i am mistaking as i am beginner in C , i am finding to understand your code..if better if you help me to understand your code and add comments in your statements

 

[engshahrul]

The password[8] is in ASCII number.