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[attachment=1695]
TITLE : DIGITAL CODE LOCK
INTRODUCTION
Here is a project called ˜Digital Code Lock using AT89C2051'. LCD is used for display and a keyboard is used to input the keys. This project source code is written in C.This a simple project with efficient hacking prevention from Brute Force etc. The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple.The input is taken from a 4×3 Keypad (please see the schematic for more information) and Display the user input on a 2×16 LCD. A pin is assigned as output for activating and deactivating the lock. For demonstration an LED is connected to that pin.The user has two options either he/she can use its own 5 digit code or use the default 5 digit code. If user has to do setup his own code, then he has to enter 12345 and press ˜#™. After this.. controller will ask for 10 Digit master password which is preprogrammed in the controller. Entering master lock, user can enter the new 5 digit code for the lock and press ˜#™ to save it.Keypad has 12 keys (4×3) starting from 1,2,3,4,5,6,7,8,9,*,0,# (please see the schematic for layout). Numeric keys are used for entering numbers. ˜*™ is used as the Cancel key and ˜#™ is used as the Enter key.
Submitted By:
Neha Sadavarte-25
Prerna Sarda-30
Radhika Gupta-32
PROJECT GUIDED BY:
Prof.M. Korde
CIRCUIT DIAGRAM
PIN DIAGRAM
WORKING
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Niceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
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Thank you, great to hear that you liked this report. For even more reports and projects visit this site. Please telll yor friends too.
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[attachment=3464]
WIRELESS DIGITAL CODE LOCK WITH A STATUS DISPLAY
INDIVIDUAL PROJECT
Presented BY
R.KARTHIKMANOJ
31106106037
DONE AT K A INSPIRE SOFTWARE SOLUTIONS
PROJECT DESCRIPTION
In my project Wireless Digital Code Lock with a Status Display is used to protect the efficient hacking prevent from brute force etc.
The basic user lock is of 4 Digits and Master lock is of 1 digit so itâ„¢s not easy for an intruder to break the lock unless you keep the code simple.
The input is taken from a 4x3 Keypad
The user input is displayed on a 2x16 LCD
A pin is assigned as output for activating and deactivating the lock.
For demonstration i have connected an LED to that pin.
HARDWARE REQUIREMENTS
MICROCONTROLLER(AT89S51) UNIT
POWER SUPPLY
KEYPAD UNIT
BUZZER UNIT
SOFTWARE REQUIREMENTS
EMBEDDED C
KEIL COMPILER
SOFTWARE IMPLEMENTATION
The software used for this project is KEIL, FLASH Programmer, OrCAD and Visual Basic6.0.
Keil is used to develop the program for AT89S51 microcontroller.
Flash programmer is used to download the program into the AT89S51 microcontroller.
OrCAD software is used to design the PCB layout.
BLOCK DIAGRAM:
TRANSMITTER SECTION
BLOCK DIAGRAM:
RECIEVER SECTION
CIRCUIT DIAGRAM
MICROCONTROLLER
The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory.
POWER SUPPLY
Power supply is a reference to a source of electrical power. A device or system that supplies electrical or other types of energy to an output load or group of loads is called a power supply unit or PSU.
STEP DOWN TRANSFORMER
The transformer is transferring the electrical voltage or current from one circuit into another circuit without changing the frequency. When (0-220V) AC is applied at the primary winding, it will step down the power supply voltage and given as(0-6V) AC in the secondary winding as an output.
ENCODER (HT12E)
The 212 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12_N data bits.
DECODER (HT12D)
The 212 decoders are a series of CMOS LSIs for remote control system applications. They are paired with Holtek_s 212 series of encoders.
The decoders receive serial addresses and data from a programmed 212 series of encoders that are transmitted by a carrier using an RF or an IR transmission medium.
TRANSMITTER MODULE (STT433)
The transmitter operates from a 1.5-12V supply, making it ideal for battery-powered applications. The transmitter employs a SAW-stabilized oscillator, ensuring accurate frequency control for best range performance.
RECEIVER MODULE (STR433)
The STR-433 is ideal for short-range remote control applications where cost is a primary concern. The receiver module requires no external RF components except for the antenna.
LCD DISPLAY (16x2)
LCD module have 8-bit data interface and control pins. One can send data as 8-bit or in pair of two 4-bit nibbles.To display any character on LCD micro controller has to send its ASCII value to the data bus of LCD. LCD display used here is having 16x2 size. It means 2 lines each with 16 character.
KEYPAD SWITCHES
The key board here we are interfacing is a matrix keyboard. This key board is designed with a particular rows and columns. These rows and columns are connected to the microcontroller through its ports of the micro controller 8051. We normally use 8*8 matrix key board.
BUZZER
Buzzer is an electromagnet that automatically connects and disconnects many times per minute. This will cause the vibration of the armature and creation of a buzzing sound.
APPLICATIONS
Itâ„¢s used to prevent from hacking.
It can be used in any device.
It protects any device and is very secured.
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thats not a full report at all
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We posted all the information we got . We will try to make it complete by adding more information.
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hey plzz forward this project to me. i need it.
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01-10-2010, 09:52 AM
[attachment=4694]
INTRODUCTION
This a simple project with efficient hacking prevention from Brute Force etc. The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple.
The input is taken from a 4×3 Keypad (please see the schematic for more information) and Display the user input on a 2×16 LCD. A pin is assigned as output for activating and deactivating the lock. For demonstration i have connected an LED to that pin.
FROM USER SIDE:
The user has two options either he/she can use its own 5 digit code or use the default 5 digit code. If user has to do setup his own code, then he has to enter “12345″ and press ‘#’. After this.. controller will ask for 10 Digit master password which is preprogrammed in the controller. Entering master lock, user can enter the new 5 digit code for the lock and press ‘#’ to save it.
USING THE KEYPAD:
Keypad has 12 keys (4×3) starting from 1,2,3,4,5,6,7,8,9,*,0,# (please see the schematic for layout). Numeric keys are used for entering numbers. ‘*’ is used as the Cancel key and ‘#’ is used as the Enter key.
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I have a free report on Password Protected Electronic Code Lock. Download this pdf file for FREE!
Click below page link to download
How to make a password protected electronic code lock
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[attachment=6033]
Wireless electronic code locking system
Wireless electronic code locking system for industrial applications
Security is a prime concern in our day-today life. Everyone wants to be as much secure as possible. An access control over devices forms a vital page link in a security chain. The project deals with a design of a simple microcontroller based system as digital lock for Devices. This system can be a control system that allows only authorized persons to access switching; the system is fully controlled by the 8 bit microcontroller AT89C51 which has internal ROM for the program memory. The pre-defined password is stored in the microcontroller.
Existing System:
Current system consists of wired device control, and it’s an unsafe procedure where any foreign body can tamper the wire physically, existing process is still far away from flaw.
Proposed System:
We are making use of RF signal for secure processing in use for safety purpose so it will be free of physical errors and it will lead us to proper communication. The keypad is provided so that the password can be entered through it. Once the key is pressed, the microcontroller at the transmitter part detects that and transmits that through the RF signal. The receiver waits for transmitter to transmit the key press signal four times. Then according to the received data it process upon it and if it finds correct password then device is unlocks else alarm go on. This will lead to a significant development in the wireless device locking technology.
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sir please send digital code lock full report
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can you send me its working and pin diagram with details.
Please send it to my mail dhiraj.pathania90[at]gmail.com
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previous pages are containing diagram and full report on digital code lock. please check it out.
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please send me a full report on digital code lock
please send me digital code lock working and pin diagram with details basedon AT89c2051
Please send it to my mail mohan123.sharma[at]gmail.com
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hey can any of u plzz give me complete report on digital code lock....
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hey, can u mail me the details (report) of this project tomorrow?...
thanks...
my email ad: leyn_sy25[at]yahoo.com
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[attachment=15575]
This a simple project with efficient hacking prevention from Brute Force etc. The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple.
The input is taken from a 4×3 Keypad (please see the schematic for more information) and Display the user input on a 2×16 LCD. A pin is assigned as output for activating and deactivating the lock. For demonstration i have connected an LED to that pin.
Posts: 2,051
Threads: 1,405
Joined: Jun 2011
[attachment=15580]
Security is a prime concern in our day-today life. Everyone wants to be as much secure as possible. An access control for doors forms a vital page link in a security chain. The microcontroller based digital lock for Doors is an access control system that allows only authorized persons to access a restricted area. The system is fully controlled by the 8 bit microcontroller AT89C2051 which has a 2Kbytes of ROM for the program memory. The password is stored in the EPROM so that we can change it at any time. The system has a Keypad by which the password can be entered through it. When the entered password equals with the password stored in the memory then the relay gets on and so that the door is opened. If we entered a wrong password for more than three times then the Alarm is switched on.
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I am in need of full document for digital code lock using AT89C2051
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digital code lock
[attachment=16830]
.LCD:-
LCD is finding wide spread use replacing LEDs (seven segment LEDs or other multi segment LEDs)
A model described here is for its low price and great possibilities most frequently used in practice. It is based on the microcontroller and can display messages in two lines with 16 characters each
Features
Diffused Junction
Low Forward Voltage Drop A
High Current Capability
High Reliability
High Surge Current Capability B
Ideal for Printed Circuit Boards
voltage regulator
The MC78XX series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications.
4 Matrix Keyboard
4*4 matrix keyboard is used to enter password and to control devices, 4*4 matrix keyboard requires only 8 I/O lines, where as the line keyboard requires 16 I/O lines
digital code lock
[attachment=16830]
.LCD:-
LCD is finding wide spread use replacing LEDs (seven segment LEDs or other multi segment LEDs)
A model described here is for its low price and great possibilities most frequently used in practice. It is based on the microcontroller and can display messages in two lines with 16 characters each
Features
Diffused Junction
Low Forward Voltage Drop A
High Current Capability
High Reliability
High Surge Current Capability B
Ideal for Printed Circuit Boards
voltage regulator
The MC78XX series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications.
4 Matrix Keyboard
4*4 matrix keyboard is used to enter password and to control devices, 4*4 matrix keyboard requires only 8 I/O lines, where as the line keyboard requires 16 I/O lines
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26-02-2012, 11:18 AM
i want a ppt about this title "digital code lock full report"
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