Password Based Door Lock System Using 8051 Microcontroller

Electronics Project Kits For Students Click HereELECTRONICS HUB P R O J E C T S | T U T O R I A L S  HOME » FREE PROJECT CIRCUITS » MINI PROJECTS » PASSWORD BASED DOOR LOCK SYSTEM USING 8051 MICROCONTROLLER Password Based Door Lock System using 8051 Microcontroller AUGUST 22, 2017 BY ADMINISTRATOR — 110 COMMENTS Contents [hide] 1 Construction and Output Video 2 Principle Behind the Circuit 3 Circuit Diagram of Password Based Door Lock System 4 Components Required 4.1 Hardware Requirements 4.2 Software Requirements 5 How to Design Circuit of Password based Door Lock System? 6 Password Based Door Lock System Circuit Simulation Video 6.1 DOWNLOAD PROJECT CODE 7 Password Based Door Locking System Circuit Operation 7.1 Password Based Door Lock System Algorithm 8 Advantages of Password Based Door Lock System 9 Applications of Password Based Door Lock System 10 Limitations of Password Based Door Lock System 11 Related Articles Password Based Door Lock System using 8051 Microcontroller is a simple project where a secure password will act as a door unlocking system. Traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system. These techniques are an integration of mechanical and electronic devices and are highly intelligent. One of the prominent features of these innovative lock systems is their simplicity and high efficiency. Such an automatic lock system consists of electronic control assembly, which controls the output load through a password. This output load can be a motor or a lamp or any other mechanical/electrical load. Here, we developed an electronic code lock system using 8051 microcontroller (a Password based Door Lock System using 8051 Microcontroller), which provides control to the actuating the load. It is a simple embedded system with input from the keyboard and the output being actuated accordingly. This system demonstrates a Password based Door Lock System using 8051 Microcontroller, wherein once the correct code or password is entered, the door is opened and the concerned person is allowed access to the secured area. Again, if another person arrives, it will ask to enter the password. If the password is wrong, then door would remain closed, denying access to the person. Construction and Output Video Recommended Reading: Electronic Code Lock System using Single Transistor Principle Behind the Circuit The main component in the circuit is 8051 controller. In this project, a 4×4 Matrix Keypad is used to enter the password. The password which is entered is compared with the predefined password. If the entered password is correct, then the system opens the door by rotating door motor and displays the status of door on LCD. If the password is wrong, then the door is remains closed and displays “PWD is wrong” on LCD. Circuit Diagram of Password Based Door Lock System Components Required Hardware Requirements 8051 Microcontroller 8051 Development Board 8051 Programmer 4×4 Matrix Keypad 16×2 LCD L293D Motor Driver Board DC Motor 10KΩ Potentiometer Connecting wires Power Supply If 8051 Development Board is not used, then the following components are needed. 11.0592 MHz Quartz Crystal 2 x 33pF Ceramic Capacitors 2 x 10 KΩ Resistor (1/4 Watt) 10 µF Capacitor (Polarized) Push Button 2 x 1 KΩ Resistors (for pull up) Software Requirements Keil µVision IDE Willar Programmer Proteus (for circuit diagram and simulation) . . 0 and P0. Motor is connected between OUT1 and OUT2 (1Y and 2Y) pins of L293D. a DC Motor. The IN1 and IN2 of (1A and 2A) of the L293D Motor Driver are connected to PORT0 pins P0. Here. The eight data lines of the LCD are connected to PORT1. Reset Circuit Design: The reset pin of the microcontroller is kept active till the power supply is in the specified range and a minimum oscillation level is maintained. Here.0. Here. We can use 9V DC battery or 12V. a 10KΩ Potentiometer is connected to the LCD Display’s Contrast Adjust Pin (Pin 3).3 and the four COLUMN pins of the Keypad are connected to P2. Interfacing LCD. general steps needs to be followed like creating a new project and . an L293D Motor Driver. Hence. we used the Keil µVision software to write the program in C language.2 pins respectively. an AT89C52 Microcontroller is used and it is an 8-bit controller. In order to provide regulated 5V DC voltage to the controller we need to use 7805 power supply circuit. This controller requires a supply voltage of +5V DC. we used two 33pF capacitors. a 4×4 Matrix Keypad and a 16×2 LCD.2V and the reset pulse width is greater than 100ms (recommended for 89C52). Keypad and Motor Driver: First. In other words to ensure the supply voltage does not falls below the threshold level of 1. The four ROW pins of the Keypad are connected to P2. Oscillator Circuit Design: An 11. we selected a 10KΩ resistor and a 10µF electrolytic capacitor.0 to P2. we need to select the values of resistor and capacitor such that RC >=100ms. This crystal oscillator is connected between pin 18 and 19 of the microcontroller. RS. the next step is to write and compile the code.0592MHz crystal oscillator is used to provide external clock signal to the microcontroller.1.How to Design Circuit of Password based Door Lock System? Password based door lock system using 8051 microcontroller circuit design uses five major components – a Microcontroller. Compilation of Microcontroller Code: Once the circuit is designed and drawn on a piece of paper. GND and P3.4 to P2. 1A adaptor as a power source. RW and E of LCD are connected to P3. we need to connect two ceramic capacitors in the range of 30pF to 40pF. To ensure smooth operation.7 pins respectively. Prior to writing the code. If the password is not matched. After a delay of 10seconds. the Door motor rotates in reverse direction to close the door.1 LOW. If the password is matched. then microcontroller maintains both P0. Once the code is compiled. Hence. the door motor is stationary so that door remains closed. we use Proteus software to draw the circuit. Password Based Door Lock System Circuit Simulation Video Before going to read the working of this circuit.0 HIGH and P0. a hex file is created. Once the code is written.1 HIGH.c extension and then add it to the source file group under the target folder. As a result. DOWNLOAD PROJECT CODE Password Based Door Locking System Circuit Operation Once the circuit is powered ON. we need to save it with . The code is dumped into the microcontroller using an external programmer and Willar Software.selecting the target device or the required microcontroller. Watch the following simulation video to get clear idea about how the above circuit works.0 LOW and P0. so the motor driver gets the input signals for reverse motion. Once password is entered.0 and P0. “ Recommend Reading: Password Based Circuit Breaker Project Circuit Diagram and Working. then the microcontroller makes P0. the Door Motor rotates in forward direction to open the door.1 LOW. Now we need to enter the password using the keypad. As a result. In the next step. so the motor driver gets the input signals for forward motion of the motor. The code is then compiled by pressing F7 key. Now the controller compares the entered password with predefined password. make sure that there is no common connection between . it displays 5 stars on LCD to indicate that controller read password successfully. microcontroller sends commands to the LCD to display “enter password” on LCD. NOTE: While giving the connections. the microcontroller makes P0. 8. 4. If you forget the password it is not possible to open the door. If the password is wrong. declare the PORT1 to LCD data pins and control pins (RS and E) to P3. After some time. Also use P0. i. 3. 7. it is not possible to operate the circuit remotely. Initially. [Also Read:Adjustable Timer With Relay Output] Advantages of Password Based Door Lock System This project provides security Power consumption is less Used commonly available components Project is simple and easy Applications of Password Based Door Lock System This simple circuit can be used at residential places to ensure better safety. If password is correct. Compare the entered password with the stored password. Then. make P0. Buy Course along with Code: Password Based Door Lock System » Password Based Door Lock System Algorithm 1.0 and P0. It can be used at organizations to ensure authorized access to highly secured places.0 pin HIGH and P0.1 for motor driver.0 and P3. . Limitations of Password Based Door Lock System It is a low range circuit. 5.AC and DC supplies.0 pin LOW and P0. After some delay again ask to enter password. Also. then display “Wrong Password” on LCD. Now read the five digit password from the user. display “Door opening” on LCD.2.1 pin LOW to open the door.e. With a slight modification this Project can be used to control the switching of loads through password. 2. During this time. display the message “enter password” on LCD.1 pin HIGH to close the door and after this display “Door closing” on LCD. declare PORT2 to keypad. then make P0. 6. Related Articles Password Based Contactless Digital Water Level Controller Celsius Scale Circuit Breaker Tachometer using using 8051 Thermometer using 8051 Microcontroller Microcontroller AT89C51 and LM35 Delay using 8051 Stepper Motor Control Interfacing 16×2 LCD Interfacing DC Motor Timers using 8051 with 8051 with 8051 Microcontroller Microcontroller FILED UNDER: 8051 MICROCONTROLLER. FREE PROJECT CIRCUITS. ELECTRONICS. MINI PROJECTS Comments aftab ahmad says APRIL 2. 2014 AT 1:13 AM i need code of this projact ” Password Based Door Lock System using 8051 Microcontroller:” Reply . EMBEDDED. vamshi sai says FEBRUARY 29. 2016 AT 11:18 AM the code in this article have some error in 12th n 13th line so could u plz upload correct code n plz send dat code to my mail i will be bery glad to have dat Reply Nishant chhabra says MARCH 21.. 2016 AT 1:30 PM The project coding which you given in this article has one error which I can’t able to resolve.. 2014 AT 2:12 PM Please have a look at article. we have updated project code. Administrator says APRIL 13. 2016 AT 3:24 PM please send code i am working on this one Reply y. Please help me to overcome it. The error is “str_lcd: has ANSI style prototype”… what is the solution for it please mail it to my email id Reply . 2016 AT 9:53 AM admin plZz can i have d project code… i’m trying to replicate your project Reply kiffayatkhan says MAY 18. Reply Akash says FEBRUARY 14. Reply Administrator says NOVEMBER 24. Reply hiro says JUNE 6.I shall be very thankful to you. 2014 AT 11:26 AM i need codes of this project in assembly (. 2014 AT 2:53 PM I need this project with assembly language Reply Hira Hussain says JUNE 5. Reply Administrator says NOVEMBER 24.electronicshub.asm) please.org/ Reply paulo Vinicius says MAY 27. 2016 AT 1:57 AM We have provided complete course along with the code…Please go through this…This may help you. 2014 AT 10:43 AM I need this project for practice. 2015 AT 1:50 PM We have provided everything in article. 2015 AT 1:51 PM . Anusha says APRIL 12.. http://courses. Reply vishnu says MARCH 22. Project code you can find in the article. 2016 AT 9:26 AM where it is ?we cant find it in the above Article so could you please post the code for the project ? Reply ilia rusenov says JUNE 9. 2015 AT 1:51 PM Please check the article. Reply . 2016 AT 12:12 AM cant find the code..its no where in the article… Reply Administrator says JANUARY 30. it’s there after the circuit diagram. Reply komal says JANUARY 19. 2014 AT 5:32 AM i need code of this projact ” Password Based Door Lock System using 8051 Microcontroller:” Reply Administrator says NOVEMBER 24. 2016 AT 6:06 AM Please have a look. we have uploaded project code. solomon says JUNE 14. keep following us. thanks for your support. 2014 AT 6:39 AM . 2014 AT 2:41 AM please send me more projects Reply Administrator says NOVEMBER 24. 2015 AT 1:53 PM Yeah. we do more projects. Reply umang says AUGUST 6. 2015 AT 1:53 PM It’s FREE. 2014 AT 6:16 AM pl were i want get the password based door lock systems use spare parts and pcb Reply vijay kumar sabbal says AUGUST 12. Reply a s d kiran says AUGUST 9. 2014 AT 3:45 PM What is cost of this projects Reply Administrator says NOVEMBER 24. all the best. 2014 AT 9:08 AM Hey! I need the code for the project “Password Based Door Lock System using 8051 Microcontroller” at the earliest. 2014 AT 2:38 PM i need this project with assembly language &8051 microcontroller circuit diagram & apparatus required & report format please send to my email id sureka17091993@gmail. I would be really greatful to you if you could help me out with this! . 2014 AT 7:26 AM Can i get more projects based on microcontroller….This is a very good project for the security i need this project Reply Administrator says NOVEMBER 24. Reply Adisa Abdulrauf says AUGUST 21. 2015 AT 1:55 PM Yeah you can try to make this project based on above article. 2014 AT 2:18 PM i like to have guideline on this project thanks Reply sureka says AUGUST 25. Reply Aman Jain says SEPTEMBER 2.com Reply parth sapru says AUGUST 26. Thanks. I tried emailing you at admin@electronicshub. Thank you. I had a quick question regarding the project design to whether or not it will be able to communicate with the main controller such as the RFM73 transceiver or not. Reply Oldane says SEPTEMBER 6. you may check it in the above article. but it says this email is invalid. Reply Mustafa Aftab says NOVEMBER 16. 2014 AT 4:12 PM How do you store the input password in a array variable and compare it? Reply prashanth says OCTOBER 23. 2014 AT 8:39 PM Email is not deliver to your id. 2015 AT 1:56 PM We have updated project code long back.org. 2014 AT 7:30 PM Hi. Please email me the coding in C language. Reply .Reply Administrator says NOVEMBER 24. 2014 AT 8:31 PM plz send me the c prog file Reply Askar says NOVEMBER 4. 2015 AT 9:19 AM I need the code for this project Reply Alex says NOVEMBER 14. 2015 AT 1:27 PM .. H. we always love your support and cooperation. 2015 AT 2:00 PM Most energetic comment for us. Reply venu gopal says NOVEMBER 22. 2015 AT 9:20 AM I need the code for this project as a guideline for university project Reply gaurav singh says NOVEMBER 17. Reply Administrator says NOVEMBER 24. 2014 AT 9:08 PM Truthfully its awesome especially for the students like me. 2014 AT 9:57 AM suppose the password forget there is no option for operate the door lock system why.? i mean why cant be reset the password Reply Alex says NOVEMBER 14. Ally says NOVEMBER 19. Thank you so much for your feedback. 2015 AT 10:01 AM i need code of this projact ” Password Based Door Lock System using 8051 Microcontroller:” in Aurdino formatt…if any one have plz snd me in my email plz…. 2015 AT 12:51 AM I would like to receive the code.email….. This is a project sin school..mail [email protected]@gmail. 2015 AT 10:03 AM i need code of this projact ” Password Based Door Lock System using 8051 .com Reply zubair Ahmed says NOVEMBER 18. I have a code written and it compiles fine but there is a glitch that I am having that I seem to cannot find.????? Reply Samuel says NOVEMBER 18.com Reply zubair Ahmed says NOVEMBER 18. 2015 AT 7:03 AM plz snd program on thAT e. Thank you Reply irfan haider says NOVEMBER 18. 2015 AT 7:01 AM i need coding for project i need coding beacuse i am ay initial stage of programing Reply irfan haider says NOVEMBER 18.can we change the length of password…………. com Reply aivee says NOVEMBER 18. 2015 AT 1:42 PM That’s a awesome project. 2015 AT 11:59 AM I am interested in this project work Reply Administrator says NOVEMBER 24.. Thank you. 2015 AT 9:43 PM This is really helpful. Reply PULAPA SUDHEER CHOWDARY says NOVEMBER 23. Can you give us the code for us to try. many people are showing interest to do this project. 2015 AT 9:50 AM can u give me project source code in arranged way(in one file) Reply Syed Irfan says DECEMBER 1. 2015 AT 5:30 AM Need the project code can u plz send me to my email the above code shows corrupted...zubairkhoso21@gmail. Reply ravi kumar says NOVEMBER 27.Microcontroller:”. Thank u . All the best.arduino format base…any one have then plz email me ….. 2015 AT 9:54 PM . but I need the code that can help me change the stored password..Reply amr magdy mahmoud says DECEMBER 3.Please check in the article Reply Sunny says DECEMBER 6. so i wan to check if there was any something wrong with my assembly code Reply Anusha says JANUARY 2. Please I need this project. And please admin help me drop some comments that explains the codes so I can be able to explain during defecne Reply shru says DECEMBER 8. 2015 AT 3:29 AM I need this project because it is my final year project topic. 2016 AT 6:44 AM Project code is uploaded. 2015 AT 3:51 AM i am interested to do this project but can anyone tell me instead of door motor what else we can use to show that the door is locked or not?? Reply Mustafa Abu elqassem says DECEMBER 12. 2015 AT 4:51 AM i need this project code to learn myself as i wan to specialized in this kind of science . 2015 AT 6:37 AM sir can i hace hex file Reply enquhone says DECEMBER 17. Reply Sourabh sen says JANUARY 7. please tell me what is the project code means……… Reply Rohan says DECEMBER 23. Reply . And send me code for microcontroller... 2015 AT 9:29 AM sir.I need the code for my graduation project Reply ali says DECEMBER 14. Plese tell me requirements for this project. 2016 AT 2:02 PM This is a very good project for security… i want to made this . 2015 AT 10:32 AM Please give full code to aid for my course project Reply ani naidu says DECEMBER 20. 2015 AT 8:02 AM please can you give me the PCB layout and block diagram of this project. 2016 AT 2:13 PM this method for yhis project is much difficult ……………….. Reply Gayan Gowramma says JANUARY 24. shahid amin says JANUARY 17. 2016 AT 12:59 PM I need the code for this project as early as possible. Reply Gayan Gowramma says JANUARY 24.project for my mini project in college… plz…rpy to me asap…I need the code . 2016 AT 11:03 AM I need code for this project plz …m making the same. it would be great if u do the needful Reply Dhananjay Chumbalkar says JANUARY 24. 2016 AT 3:38 PM Actually I want to do a mini project on this topic because I need it…plz help me and send me code… Thank you! Reply taruna says JANUARY 26. it would great if u do the needful. 2016 AT 12:56 PM Hey I need the code for the project “Password Based Door Lock System using 8051 Microcontroller” as early as possible.tysm Reply . Reply talib says FEBRUARY 2.. K. I am learning how to use the hardware and I saw this video on youtube and it seemed like an interesting project and one which I can learn from. Reply Souryadeep Sen says FEBRUARY 2. 2016 AT 8:59 PM send me code plz. 2016 AT 8:20 AM Can you please provide me with the assembly level code. 2016 AT 3:26 PM I am making the same project as I have taken this project as my topic for mini project so con you please provide the programs. 2016 AT 10:21 AM I am making the same projectas I have taken this project as my topic for mini project so con you please provide the programs. 2016 AT 1:06 PM Useful Reply Shreyas says FEBRUARY 1. I would be extremely obliged if you could provide me with the assembly level code. Reply shubham Telavane says FEBRUARY 2. Reply .bhargavi says JANUARY 27. aarti says FEBRUARY 3. we have already uploaded the project code please check it Reply miss sandhya medpalli says FEBRUARY 10. 2016 AT 4:51 AM i need this project code because i wan to implement my last year graduation project plz give me the code of this project Reply Admin says FEBRUARY 10. Can u give me project code of”password door lock system using 8085 ‘in assembly language? Reply . 2016 AT 1:55 AM Hi.I need project code of this project for my last year project submission. 2016 AT 5:33 AM i m making this project please give me the code Reply Arpitha says FEBRUARY 6. 2016 AT 2:54 AM I need code for ths project as i am doing it as mini project in my colg so plz send me the code using 8051 microcontroller” if it s in arduino format base thn it would be of great help ty Reply ahmed says FEBRUARY 9. 2016 AT 3:34 AM hi i am sandhya . we have provided link below simulation video Reply Chandan says FEBRUARY 19. 2016 AT 10:52 AM I need a project code in c language for mini project…pls provide code…. . 2016 AT 2:08 AM We have uploaded the code…Go through the article completely. 2016 AT 3:44 PM The project code uploaded by you is not opening after the download please snd us a original code to replicate your project. 2016 AT 11:51 AM i need the code of door lock password project… this is the first time am doing dis… first am going to try the same project… Reply Anusha says FEBRUARY 17.. Reply Anusha says FEBRUARY 23. 2016 AT 8:39 AM my circuit is ready but . Reply Hariharan V says FEBRUARY 16. 2016 AT 3:26 AM Please try to install keil software to open these files Reply shreyas says FEBRUARY 20. Sampada says FEBRUARY 11. 2016 AT 12:28 AM Can u pls send me the program in c language my email I’d is [email protected] not available ice 8051 plz send program on that mail [email protected]’s my 1st project. can u plz send me the code Reply rajlaxmi says FEBRUARY 27.com Reply Anusha says FEBRUARY 23.. 2016 AT 3:38 AM Code is uploaded in the article. 2016 AT 6:22 AM m interested in dng the project.com Reply . Reply poovarasi says FEBRUARY 26. 2016 AT 2:15 PM Plz send the code.. Reply Admin says FEBRUARY 29.Please download the code from article. 2016 AT 2:13 AM Download code from the article Reply shanu says MARCH 3. . Reply ajay says MARCH 8.Relay is used to provide isolation here.It is written in C Reply jabbar rahim says NOVEMBER 27.. 2016 AT 5:36 AM sir tell me the specification of dc motor that used in password door lock system. 2016 AT 1:27 AM Why that relay is required in the project we can rotate the stepper motor without relay also? Reply Anusha says MARCH 8. 2016 AT 1:11 AM Download code from the post. Admin says MARCH 3. 2016 AT 3:28 PM Can I get this ic at89c59 with this program burnt on it for password protection door locking system? Reply . Reply shanu says MARCH 9. 2016 AT 2:24 AM In real time we may use AC motor. 2016 AT 3:27 PM i am trying to make this project’ but iam facing the problem while creating hex file can you provide me hex file or help me in creating it with keil i’ll be very thankfull to u Reply ebuka says MARCH 23. this is my final year project Reply Anusha says MARCH 28. 2016 AT 11:01 AM Can you send me .com Reply prasad says MARCH 18.asm) please. Reply Saukhya says MARCH 21.. 2016 AT 7:45 AM please admin.Can u pls mail it to me??or pls re-post the link here again. how do i combine the codes in the compiler. 2016 AT 11:44 AM i need codes of this project in assembly (. 2016 AT 12:38 AM I want assemblylanguage code for this project..SCH file at myeole1995@gmail. 2016 AT 8:53 AM Please be clear with your question. Reply sen says MARCH 21.And I m not able to find asm file only C file is there n no asm file. . mukesh says MARCH 17.. 2016 AT 5:10 AM how do we connect the preset to LCD? Reply . E:g Multisim . 2016 AT 11:51 AM I also need of code password based door lock system Reply Unknow says APRIL 3.. kindly answer bcs i cant find microcontroller at89c51 in multisim. Reply Abdul Muqeet says MAY 5. 2016 AT 12:04 PM Help ? Please Name the Simulator Software Use in This Video. 2016 AT 2:20 AM Which Software u used to implements the parts . Reply arsalanarain says MARCH 28. Reply almaz says MARCH 31. Thank u Reply Milouni Desai says APRIL 7. 2016 AT 4:13 AM where is the code ? i can’t see it anywhere in the article if it’s really in the article then please upload the link. waseem akram says APRIL 19. 2016 AT 8:31 AM can i get programming of it ???? plzzz Reply m. Reply sahana says JULY 30. 2016 AT 8:49 AM where i can find the hex file or the programe to commond the microcontroller???? Reply umair malik says MAY 26. 2016 AT 11:03 AM I am working on this project based on this article but i have a problem with hardware. 2016 AT 8:29 AM I thinkthis is really interesting to doo i like it to be implemented Reply . Milouni Desai says APRIL 7. 2016 AT 5:13 AM please help me with the connections of preset with LCD Reply akhil says APRIL 9. In Proteus project works good but when implement on hardware its not working … please guide me admin. com Reply Anusha says JULY 7. 2017 AT 4:29 PM sir i am enggineering student ……i have been given this project (PASSWORD BASED LOCK DOOR SYSTEM) send me the code of this project i will be very grateful to you my email address: aftab40000@gmail. BASHIR ADAM says FEBRUARY 21. 2017 AT 11:46 PM Programme for. Required fields are marked * Comment . 2017 AT 9:10 AM PLEASE I NEED THE CODE FOR MICROCONTROLLER BASED LOCK USING COLOUR SECURITY CODE IF ANY Reply rushikesh says MARCH 20. 8051 Reply AFTAB ALI says MAY 10. 2017 AT 4:49 AM Please go through this course for code and complete information Reply Leave a Reply Your email address will not be published. please check your internet connection and reload. Why is this happening to me? POST COMMENT Search this website … . 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